Datasheet
NC2600 series
2A Low Quiescent Current PWM/PFM Step-down Switching Regulator
FEATURES
GENERAL DESCRIPTION
Input Voltage Range (Maximum Rating):
2.3 V to 5.5 V (6.5 V)
Operating Temperature Range:
−40 °C to 85 °C
Output Voltage Range:
Fixed Output Voltage Type:
0.6 V to 3.3 V
Adjustable Output Voltage Type: 0.6 V to 5.5 V
Output Voltage Accuracy:
±1.5% (VSET ≥ 1.2 V)
±18 mV (VSET < 1.2 V)
Feedback Voltage Accuracy:
±9 mV
Quiescent Current:
Typ. 17 µA
Switching Frequency:
Typ.4.0 MHz (VSET = 1.8 V)
UVLO Detection Voltage:
Typ.2.0 V
Soft-Start Time:
Typ. 0.15 ms When CSS is open.
Thermal Shutdown Function:
Detection Temperature Typ. 150 °C
Release Temperature Typ. 120 °C
Auto Discharge Function
Latch Protection Function
The NC2600 is a low quiescent current PWM / PFM
2A step-down switching regulator IC using CMOSbased.
The NC2600 is available in WLCSP-8-P11 and
DFN2020-8-GT, and it is suitable for use in wearable
and IoT devices that require miniaturization and longlifetime of battery.
WLCSP-8-P11
1.62 x 0.98 x 0.4 (mm)
APPLICATIONS
DFN2020-8-GT
2.0 x 2.0 x 0.6 (mm)
Portable Communication Devices: Mobile Phones /
Smartphones
Digital Cameras and Note-PCs
Li-ion Battery-used Equipment
TYPICAL APPLICATIONS
EFFICIENCY TYPICAL CHARACTERISTICS
L
1 μH
RPG
VPG
100 kΩ
VIN
SW
NC2600xxxxx
A/B/C/D
PG
CSS
VOUT
90
MODE
4.7 μF
EN
COUT
FB
10 μF
GND
Fixed Output Voltage Type
RPG
VPG
100 kΩ
CIN
4.7 μF
VIN
SW
NC2600xx000
A/B/C/D
PG
CSS
MODE
EN
FB
GND
1 μH
VOUT
R11
C1
R12
R0
220 kΩ
CSS
0.1 μF
70
60
50
40
MODE=High
MODE=Low
30
VVin=2.5V
IN = 2.5 [V]
VVin=3.6V
IN = 3.6 [V]
VVin=4.2V
IN = 4.2 [V]
VVin=5.0V
IN = 5.0 [V]
20
L
VIN
80
CSS
0.1 μF
CIN
100
Efficiency [%]
VIN
220 kΩ
10 pF
1 kΩ
R2
220 kΩ
COUT
10 μF
10
0
0.01
0.1
1
10
100
1000
10000
Output Current IOUT [mA]
NC2600ZA
VOUT = 1.8 [V]
Adjustable Output Voltage Type (VSET = 1.8V)
Ver.1.3
- 1 -
Datasheet
NC2600 series
PRODUCT NAME INFORMATION
NC2600 aa
bbb
c dd
e
Description of configuration
Composition
Item
Description
aa
Package Code
bbb
Output Voltage
c
Version
Indicates the package. Refer to the order information.
Set Output Voltage (VSET)
Adjustable Output Voltage Type (000)
The internal fixed output voltage type has a lineup of main voltages in the range of
0.6 V (060) to 3.3 V (330).
Indicates the selection of auto discharge function and latch protection function.
dd
Packing
Refer to the packing specifications.
e
Grade
Indicates the quality grade.
Version
c
Latch Protection Function
Auto Discharge Function
A
Yes
Yes
B
Yes
No
C
No
Yes
D
No
No
e
Applications
Operating Temperature Range
Test Temperature
S
Consumer
−40 °C to 85 °C
25 °C
Grade
ORDER INFORMATION
PRODUCT NAME
PACKAGE
RoHS
HALOGENFREE
PLATING
COMPOSITION
MARKING
WEIGH
T (mg)
Quantity per
Reel(pcs)
NC2600ZA bbbc E2S
WLCSP-8-P11
Yes
Yes
Sn3Ag0.5Cu
Reference
1.1
5000
NC2600GT bbbc E4S
DFN2020-8-GT
Yes
Yes
Sn
Reference
7.0
3000
Refer to the marking specifications for a detailed lineup of set output voltage and versions.
Ver.1.3
- 2 -
Datasheet
NC2600 series
PIN DESCRIPTIONS (NC2600ZA)
Top View
Bottom View
2
2
1
1
A
B
C
D
D
C
B
A
WLCSP-8-P11 Pin Configuration
NC2600ZA (WLCSP-8-P11) Pin Descriptions
Pin No.
Pin Name
I/O
Description
A1
VIN
Power
B1
SW
O
C1
EN
I
D1
PG
O
A2
GND
-
B2
CSS
I
C2
MODE
I
D2
FB
I
Power Supply Input Pin
Switching Output Pin
Internal MOSFET Drain
Connect the inductor between the VOUT node and the SW pin.
Enable Pin
Can set the active state with the "High" input and the shutdown state with the "Low"
input.
Power-good Output Pin
NMOS open drain output.
In normal operation, "High" (pull-up voltage) is output.
Ground Pin
Soft-Start Adjustment Pin
Soft-Start time can be adjusted by connecting a capacitor between the CSS pin and GND.
Mode Control Pin
High: Forced PWM Control, Low: PWM/PFM Auto Switching Control.
Feedback Pin
When using NC2600xx000x (adjustable output voltage type), connect an external resistor
as the feedback input pin for the error amplifier and set the output voltage.
When using the internal fixed output voltage type, connect it to the VOUT node as an
output voltage feedback pin.
For details, refer to " Typical Application Circuit " and " THEORY OF OPERATION ".
Ver.1.3
- 3 -
Datasheet
NC2600 series
PIN DESCRIPTIONS (NC2600GT)
8
7
6
5
5
6
7
8
*
1
2
3
4
4
3
2
1
DFN2020-8-GT Pin Configuration
The tab on the bottom of the package is the silicon substrate
level. It is recomended to connect to GND level on the board.
*
NC2600GT (DFN2020-8-GT) Pin Descriptions
Pin No.
Pin Name
I/O
Description
1
GND
-
2
CSS
I
3
MODE
I
Mode Control Pin
High: Forced PWM Control, Low: PWM/PFM Auto Switching Control.
Ground pin
Soft-Start Adjustment Pin
Soft-Start time can be adjusted by connecting a capacitor between the CSS pin and GND.
4
FB
I
Feedback Pin
When using NC2600xx000x (adjustable output voltage type), connect an external resistor
as the feedback input pin for the error amplifier and set the output voltage.
When using the internal fixed output voltage type, connect it to the VOUT node as an
output voltage feedback pin.
5
PG
O
Power-good Output Pin
NMOS open drain output.
In normal operation, "High" (pull-up voltage) is output.
6
EN
I
Enable Pin
Can set the active state with the "High" input and the shutdown state with the "Low" input.
7
SW
O
Switching Output Pin
Internal MOSFET Drain
Connect the inductor between the VOUT node and the SW pin.
8
VIN
Power
Power Supply Input Pin
For details, refer to " Typical Application Circuit " and " THEORY OF OPERATION ".
Ver.1.3
- 4 -
Datasheet
NC2600 series
ABSOLUTE MAXIMUM RATINGS
Symbol
Ratings
Unit
Input Voltage
Parameter
VIN
−0.3 to 6.5
V
SW pin voltage
VSW
−0.3 to VIN + 0.3
V
EN pin voltage
VEN
−0.3 to 6.5
V
CSS pin voltage
VCSS
−0.3 to 6.5
V
PG pin voltage
VPG
−0.3 to 6.5
V
MODE pin voltage
FB pin voltage
VMODE
−0.3 to 6.5
V
VFB
−0.3 to 6.5
V
Tj
−40 to 125
°C
Tstg
−55 to 125
°C
Junction Temperature Range *1
Storage Temperature Range
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause permanent damage and may
degrade the lifetime and safety for both device and system using the device in the field. The functional operation at or over
these absolute maximum ratings is not assured.
*1
Calculate the power consumption of the IC from the operating conditions, and calculate the junction temperature with the
thermal resistance.
Please refer to "THERMAL CHARACTERISTICS" for the thermal resistance under our measurement board conditions
THERMAL CHARACTERISTICS
Package
WLCSP-8-P11
DFN2020-8-GT
Parameter
Measurement Result
Thermal Resistance (θja)
131
Thermal Characterization Parameter (ψjt)
38
Thermal Resistance (θja)
71
Thermal Characterization Parameter (ψjt)
33
Unit
°C/W
θja：Junction-to-Ambient Thermal Resistance
ψjt：Junction-to-Top Thermal Characterization Parameter
The above values are reference data under measurement conditions based on JEDEC STD.51.
ELECTROSTATIC DISCHARGE RATINGS
Parameter
HBM
Conditions
C = 100 pF, R = 1.5 kΩ
Protection Voltage
±2000 V
±1000 V
CDM
ELECTROSTATIC DISCHARGE RATINGS
The electrostatic discharge test is done based on JESD47.
In the HBM method, ESD is applied using the power supply pin and GND pin as reference pins.
Ver.1.3
- 5 -
Datasheet
NC2600 series
RECOMMENDED OPERATING CONDITIONS
Symbol
Ratings
Unit
Input Voltage
Parameter
VIN
2.3 to 5.5
V
Operating Temperature Range
Ta
−40 to 85
°C
RECOMMENDED OPERATING CONDITIONS
All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended
operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions,
even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices
may receive serious damage when they continue to operate over the recommended operating conditions.
Ver.1.3
- 6 -
Datasheet
NC2600 series
ELECTRICAL CHARACTERISTICS
NC2600xx060x to 330x （Internal Fixed Output Voltage Type）
VIN = 3.6V (VSET ≤ 2.6V) or VSET + 1 V (VSET > 2.6V) unless otherwise specified.
For parameter that do not describe the temperature condition, the MIN / MAX value under the condition of
−40 °C ≤ Ta ≤ 85 °C is described.
Parameter
Symbol
Conditions
Output Voltage
VOUT
Ta = 25 °C
Switching Frequency
fOSC
MIN
TYP
MAX
Unit
VSET ≥ 1.2 V
x 0.985
-
x 1.015
VSET < 1.2 V
−0.018
-
+0.018
V
-
4.0
-
MHz
-
17
25
µA
-
0
5
µA
Quiescent Current
IQ
Shutdown current
ISD
VMODE =3.6 V
VFB = VSET × 1.05,
VMODE = 0 V, no switching
VIN = 5.5 V, VEN = 0 V
EN "H" Input Current
IENH
VIN = VEN = 5.5 V
−1
0
1
µA
EN "L" Input Current
VIN = 5.5 V, VEN = 0 V
−1
0
1
µA
MODE "H" Input Current
IMODEH
VIN = VMODE = 5.5 V
−1
0
1
µA
MODE "L" Input Current
IMODEL
VIN = 5.5 V, VMODE = 0 V
−1
0
1
µA
IENL
VFB "H" Input Current
IFBH
VIN = VFB = 5.5 V, VEN = 0 V
−1
0
1
µA
VFB "L" Input Current
IFBL
VIN = 5.5 V, VEN = VFB = 0 V
−1
0
1
µA
-
60
-
Ω
On-resistance for Discharger
RONDIS
NC2600xxxxxA/C
EN pin "H" Input Voltage
VENH
VIN = 5.5 V
1.0
-
-
V
EN pin "L" Input Voltage
VENL
VIN = 2.3 V
-
-
0.4
V
MODE "H" Input Voltage
VMODEH
VIN = 5.5 V
1.0
-
-
V
MODE "L" Input Voltage
VMODEL
VIN = 2.3 V
On-resistance of High Side
MOSFET
RONH
ISW = 100 mA
On-resistance of Low Side
MOSFET
RONL
ISW = 100 mA
Soft-Start Time 1
tSTART1
CSS = OPEN
Soft-Start Time 2
tSTART2
CSS = 0.1 μF
SW Current Limit
ISWLIM
Protection Delay Time
UVLO Detection Voltage *1
UVLO Release
Voltage *1
-
0.4
V
-
0.13
-
Ω
NC2600GT
-
0.15
-
Ω
NC2600ZA
-
0.09
-
Ω
NC2600GT
-
0.12
-
Ω
-
150
300
µs
15
30
45
ms
2.3
-
4.7
A
10
20
40
µs
VUVLODET
VIN = Falling
1.85
2.00
2.20
V
VUVLOREL
VIN = Rising
1.90
2.05
2.25
V
VSET x
1.1
45
VSET x
1.2
VSET x
0.8
-
Ω
-
V
VSET x
0.9
V
tPROT
NC2600xxxxxA/B
NC2600ZA
On resistance at PG "L" Output
RONPG
VFB = 0 V
OV Detection Voltage
VOVD
VFB = Rising
UV Detection Voltage
VUVD
VFB = Falling
-
TSDDET
Tj = Rising
-
150
-
°C
TSDREL
Tj = Falling
-
120
-
°C
Thermal Shutdown Detection
Temperature
Thermal Shutdown Release
Temperature
All electrical characteristic parameters that specify the minimum and maximum specifications are tested under the condition of
Tj ≈ Ta = 25 °C
*1
Due to the circuit configuration, VUVLODET ≥ VUVLOREL does not hold. The hysteresis is Typ.0.05 V.
Ver.1.3
- 7 -
Datasheet
NC2600 series
NC2600xx000x （Adjustable Output Voltage Type）
VIN = 3.6V unless otherwise specified.
For parameter that do not describe the temperature condition, the MIN / MAX value under the condition of
−40 °C ≤ Ta ≤ 85 °C is described.
Parameter
Symbol
Conditions
MIN
TYP
MAX
Unit
0.591
0.600
0.609
V
Feedback voltage
VFB
Ta = 25 °C
Switching Frequency
fOSC
VMODE =3.6 V
-
4.0
-
MHz
-
17
25
µA
-
0
5
µA
Quiescent Current
IQ
VFB = 0.63 V, VMODE = 0 V, no switching
Shutdown current
ISD
VIN = 5.5 V, VEN = 0 V
EN "H" Input Current
IENH
VIN = VEN = 5.5 V
−1
0
1
µA
EN "L" Input Current
IENL
VIN = 5.5 V, VEN = 0 V
−1
0
1
µA
VIN = VMODE = 5.5 V
−1
0
1
µA
MODE "H" Input Current
IMODEH
MODE "L" Input Current
IMODEL
VIN = 5.5 V, VMODE = 0 V
−1
0
1
µA
FB "H" Input Current
IFBH
VIN = VFB = 5.5 V, VEN = 0 V
−1
0
1
µA
FB "L" Input Current
IFBL
VIN = 5.5 V, VEN = VFB = 0 V
−1
0
1
µA
-
60
-
Ω
EN pin "H" Input Voltage
VENH
VIN = 5.5 V
1.0
-
-
V
EN pin "L" Input Voltage
VENL
VIN = 2.3 V
-
-
0.4
V
MODE "H" Input Voltage
VMODEH
VIN = 5.5 V
1.0
-
-
V
MODE "L" Input Voltage
VMODEL
VIN = 2.3 V
-
-
0.4
V
NC2600ZA
-
0.13
-
Ω
NC2600GT
-
0.15
-
Ω
NC2600ZA
-
0.09
-
Ω
NC2600GT
-
0.12
-
Ω
On-resistance for Discharger
On-resistance of High Side
MOSFET
On-resistance of Low Side
MOSFET
RONDIS
RONH
NC2600xx000A/C
ISW = 100 mA
RONL
ISW = 100 mA
Soft-Start Time 1
tSTART1
CSS = OPEN
-
150
300
µs
Soft-Start Time 2
tSTART2
CSS = 0.1 μF
15
30
45
ms
SW Current Limit
ISWLIM
2.3
-
4.7
A
Protection Delay Time
UVLO Detection Voltage *1
UVLO Release
Voltage *1
10
20
40
µs
VUVLODET
VIN = Falling
1.85
2.00
2.20
V
VUVLOREL
VIN = Rising
1.90
2.05
2.25
V
tPROT
NC2600xx000A/B
On resistance at PG "L" Output
RONPG
VFB =0 V
-
45
-
Ω
OV Detection Voltage
VOVD
VFB = Rising
0.66
0.72
-
V
UV Detection Voltage
Thermal Shutdown Detection
Temperature
Thermal Shutdown Release
Temperature
VUVD
VFB = Falling
-
0.48
0.54
V
TSDDET
Tj = Rising
-
150
-
°C
TSDREL
Tj = Falling
-
120
-
°C
All electrical characteristic parameters that specify the minimum and maximum specifications are tested under the condition of
Tj ≈ Ta = 25 °C
*1
Due to the circuit configuration, VUVLODET ≥ VUVLOREL does not hold. The hysteresis is Typ.0.05 V.
Ver.1.3
- 8 -
Datasheet
NC2600 series
PRODUCT-SPECIFIC ELECTRICAL CHARACTERISTICS
PRODUCT NAME
VOUT (Ta = 25 °C)
TYP
0.6
NC2600xx060xxxx
MIN
0.582
MAX
0.618
NC2600xx070xxxx
0.682
0.7
0.718
NC2600xx080xxxx
0.782
0.8
0.818
NC2600xx090xxxx
0.882
0.9
0.918
NC2600xx100xxxx
0.982
1.0
1.018
NC2600xx110xxxx
1.082
1.1
1.118
NC2600xx120xxxx
1.182
1.2
1.218
NC2600xx130xxxx
1.280
1.3
1.320
NC2600xx140xxxx
1.379
1.4
1.421
NC2600xx150xxxx
1.477
1.5
1.523
NC2600xx160xxxx
1.576
1.6
1.624
NC2600xx170xxxx
1.674
1.7
1.726
NC2600xx180xxxx
1.773
1.8
1.827
NC2600xx190xxxx
1.871
1.9
1.929
NC2600xx200xxxx
1.970
2.0
2.030
NC2600xx210xxxx
2.068
2.1
2.132
NC2600xx220xxxx
2.167
2.2
2.233
NC2600xx230xxxx
2.265
2.3
2.335
NC2600xx240xxxx
2.364
2.4
2.436
NC2600xx250xxxx
2.462
2.5
2.538
NC2600xx260xxxx
2.561
2.6
2.639
NC2600xx270xxxx
2.659
2.7
2.741
NC2600xx280xxxx
2.758
2.8
2.842
NC2600xx290xxxx
2.856
2.9
2.944
NC2600xx300xxxx
2.955
3.0
3.045
NC2600xx310xxxx
3.053
3.1
3.147
NC2600xx320xxxx
3.152
3.2
3.248
NC2600xx330xxxx
3.250
3.3
3.350
Unit
V
Above parameters are all tested under the following conditions:
Tj ≈ Ta = 25 °C
Ver.1.3
- 9 -
Datasheet
NC2600 series
BLOCK DIAGRAMS
PG
PG
Over/Under
Voltage
Detector
Over/Under
Voltage
Detector
High Side
Current
Detector
OVD
UVD
MODE
Slope
Generator
FB
On Time
Control
Switching
Control
Comp.
Soft
Start
Vref
Slope
Generator
Switching
Control
Soft
Start
CSS
Vref
NC2600xxxxxA/C Block Diagram
GND
Low Side
Current
Detector
Thermal
Protection
Under
Voltage
Lock Out
SW
Amp.
GND
Low Side
Current
Detector
On Time
Control
Comp.
FB
Enable
Control
EN
VIN
Mode
Control
SW
Amp.
CSS
UVD
VIN
Mode
Control
MODE
High Side
Current
Detector
OVD
Thermal
Protection
EN
Enable
Control
Under
Voltage
Lock Out
NC2600xxxxxB/D Block Diagram
THEORY OF OPERATION
Enable Function
Forcing above designated "High" voltage to EN pin, the NC2600 becomes active. Forcing below designated "Low" voltage
to EN pin shuts down the NC2600. In shutdown condition, all functions are disabled except auto discharge function. With
auto discharge option, the MOSFET to discharge the output capacitor turns on and the output is pulled down to GND.
Without auto discharge option, the output becomes "Hi-Z". EN pin can accept input range voltage regardless of the input of
VIN pin.
Do not open the EN pin because it is not pulled up or down inside the IC.
If Enable function is not necessary, tie EN pin to VIN pin or other designated "High" voltage node at start-up.
Auto Discharge Function
When turned off, the Vout voltage drops rapidly to near 0V by discharging the charge stored in the output capacitor through
the MOSFET connected between the SW pin and GND pins. The auto discharge function is enabled when the EN pin =
"low" ,UVLO detection or the thermal shutdown detection. On-resistance of MOSFET is Typ.60 Ω.
Ver.1.3
- 10 -
Datasheet
NC2600 series
Soft-Start
When the input voltage (VIN) exceeds the UVLO release voltage (VUVLOREL) and the EN pin is input with a voltage higher than
the EN "High" input voltage (VENH), the Soft-Start circuit starts operation. After the Soft-Start circuit starts operating and the
delay time (tSTARTUP_delay) Typ.45μsec, the IC internal reference voltage (VREF) starts rising, and after the Soft-Start time
(tSTART)* 1, the VREF reaches the specified value.
The output of the PG pin (VPG) confirms that the output voltage (VOUT) is between the UV detection voltage (VUVD) and the
OV detection voltage (VOVD), and becomes "High" after the PG delay time (tPG_delay=Typ.10µsec).
VENH
Soft-Start Time (tSTART)
EN Pin Input Voltage
(VEN)
tSTARTUP_delay
IC Internal Reference Voltage
(VREF)
Soft-Start Circuit
Operation Starts
SW Voltage
(VSW)
Output Voltage
(VOUT)
PG Delay Time (tPG_delay)
PG Voltage
(VPG)
Timing Chart when Starting-up with EN pin
Input Voltage
(VIN)
VUVLOREL
Soft-Start Time (tSTART)
tSTARTUP_delay
IC Internal Reference
Voltage (VREF)
Soft-Start Circuit
Operation Starts
SW Voltage
(VSW)
VSET
Output Voltage
(VOUT)
PG Delay Time (tPG_delay)
PG Voltage
(VPG)
Timing Chart when Starting-up with VIN = EN
The current limiting function, latch type protection function (NC2600xxxxxA/B), UVLO function, and thermal shutdown
function are effective even during the Soft-Start time. When the thermal shutdown is released, the Soft-Start function is
effective.
When starting with a large load current or when a large capacitance is used in the COUT, the above protection functions may
be activated. In such a case, adjust the CSS and increase the Soft-Start time in order to avoid such an abnormal situation.
*1 Soft-Start time (tSTART) indicates the duration until the reference voltage (VREF) reaches the specified voltage after Soft-Start
circuit’s activation.
Ver.1.3
- 11 -
Datasheet
NC2600 series
Soft-Start Time Adjustment
Soft-Start time tSTART can be adjusted as shown in the figure below by connecting a capacitor CSS to the CSS pin. When
CSS is 0.1 μF, the Soft-Start time is Typ.30 ms. If you do not need to adjust the Soft-Start time, open the CSS pin to start up
with the built-in Soft-Start time (Typ.0.15 ms). Soft-Start time can be calculated using the following equation.
There is no limit to the capacitance value of the CSS.
CSS [μF] = tSTART [ms] x 0.0033
tSTART
30ms
15ms
3ms
0.15ms
0
470pF
0.01uF
0.047uF
0.1uF
CSS
CSS vs. tSTART (Typ)
Under Voltage Lockout (UVLO) Circuit
When VIN becomes lower than VSET, the step-down switching regulator stops its switching operation and ON duty becomes
100%, then VOUT gradually falls according to VIN.
When the VIN drops below the UVLO detection voltage (VUVLODET), the UVLO operates, VREF stops, and high side MOSFET
and low side MOSFET turn “OFF”.
As a result, the output voltage decreases according to the capacitance value of COUT, load current, and discharge FET onresistance (NC2600xxxxxA/C).
To restart the operation, VIN needs to exceed VUVLOREL. The timing chart below shows the VOUT voltage waveforms when the
VIN value is changed Falling edge (detecting) and rising edge (releasing) waveforms of VOUT could be affected by the initial
voltage of COUT and the output current of VOUT.
Input Voltage VSET
(VIN)
VUVLOREL
VUVLODET
IC Internal Reference
Soft-Start Time (tSTART)
Voltage
(VREF)
SW Voltage
(VSW)
Output Voltage
(VOUT)
tSTARTUP_delay
Timing Chart with Variations in Input Voltage (VIN)
Ver.1.3
- 12 -
Datasheet
NC2600 series
Thermal Shutdown
When the junction temperature exceeds the thermal shutdown detection temperature (Typ.150°C), switching stops and
self-heating is suppressed.
This IC will restart when the junction temperature drops below the thermal shutdown release temperature (Typ.120°C).
Then, the Soft-Start function is activated.
Tj
150°C
120°C
Soft-Start Time (tSTART)
Reference Voltage
(VREF)
SW Voltage
(VSW)
Output Voltage
(VOUT)
tSTARTUP_delay
Current Limit Circuit、Latch Type Protection Circuit
Current limit circuit supervises the peak current flowing through the inductor in each switching cycle. If the current exceeds
the SW current limit (Typ.3.4 A), High Side MOSFET is turned off and the upper limit of the inductor peak current is imposed.
The latch-type protection circuit latches the built-in driver off and shuts down the switching regulator if this overcurrent
condition lasts for the protection delay time (tPROT). To release the latch type protection state, restart the device by inputting
"Low" signal to the EN pin or making the Input Voltage lower than UVLO detection voltage (VUVLODET).
Over Current Protection
SW Current limit
(ISWLIM)
Inductor Current
SW Voltage
(VSW)
Over-Current Protection Operation
Ver.1.3
- 13 -
Datasheet
NC2600 series
Forced PWM Mode and PWM / PFM Auto Switching Mode
Output voltage controlling method is selectable between a forced PWM mode type and PWM/PFM Auto Switching mode.
The operation mode can be set by the MODE pin. The forced PWM mode operates with fixed switching frequency to reduce
noise in low output current. The PWM/PFM Auto Switching mode automatically enters PFM control to achieve high efficiency
at light load current.
The above control types operate differently depending on the relationship between the load current (IOUT) and the current
ripple (ΔIL) calculated by the following equation.
∆IL = (VIN − VOUT) × tON / L
tON：ON time of high side MOSFET
Do not open the MODE pin because it is not pulled up or down inside the IC.
MODE = "High" (Forced PWM Mode)
When a "High" signal is input to the MODE pin, the device enters a forced PWM mode in which the high side MOSFET and
low side MOSFET are turned on alternately. During this operation, it operates with fixed switching frequency regardless of
the load current. This reduces output voltage ripple and responds quickly to load current transitions.
If IOUT 0 A.
Refer to the figure below.
In this way, when the MODE pin is fixed to "Low", PWM operation and PFM operation are automatically switched according
to the load current.
IL
ILLOW
ILHIGH
ILLOW
ΔIL
ILLOW
0
t
tOFF tOFF-OFF
tON
tPERIOD = 1/fOSC
IOUT < ΔIL/2
tON
tOFF
tPERIOD = 1/fOSC
IOUT = ΔIL/2
tON
tOFF
tPERIOD = 1/fOSC
IOUT > ΔIL/2
PWM/PFM Auto Switching Mode
Ver.1.3
- 15 -
Datasheet
NC2600 series
Switching Frequency
The minimum on-time / the minimum off-time for this product is determined by the circuit. If the on-time / the off-time
calculated under the input/output voltage conditions at 4 MHz are less than the minimum on-time / minimum off-time
determined by the circuit, the switching frequency falls below 4 MHz.
The on-time under no load is calculated by the following equation according to the input / output voltage conditions.
tON = 250 ns x VOUT / VIN
Example 1: Switching frequency with minimum on-time (60 ns) under the following input / output conditions.
condition1: VIN = 3.6 V, VOUT = 1.2 V
1/4 MHz × 1.2 V/3.6 V = 83 ns > minimum on-time (60 ns)
Operates with 4 MHz.
condition2: VIN = 5.5 V, VOUT = 1.0 V
1/4 MHz × 1.0 V/5.5 V = 55 ns < minimum on-time (60 ns)
Switching frequency falls below 4 MHz.
Example 2: Switching frequency with minimum off-time (50 ns) under the following input / output conditions.
condition1: VIN = 5.0 V, VOUT = 3.3 V
1/4 MHz × (1 - 3.3 V/5.0 V) = 77 ns > minimum off-time (50 ns)
Operates with 4 MHz.
condition2: VIN = 4.0 V, VOUT = 3.3 V
1/4 MHz × (1 - 3.3 V/4.0 V) = 44 ns < minimum off-time (50 ns)
Switching frequency falls below 4 MHz.
Ver.1.3
- 16 -
Datasheet
NC2600 series
Power Good Function
This product has a power good (PG) function, and the output type is NMOS FET open drain. When EN = "Low" is
detected, the NMOS FET turns on and sets the power good output to "Low".
Figure: Refer to PG Output When EN = "Low".
Also, when the IC detects Over Voltage (OV) or Under Voltage (UV), the power good output is set to "Low" as well.
Figure: Refer to PG Output When OV or UV is Detected.
When the IC is released from these conditions, the NMOS FET is turned off and the power good output is set to "High".
The pull-up resistor (RPG) of the PG pin should be between 10 kΩ and 100 kΩ. The PG pin must be open or connected to
GND if the power good function is not used.
EN Pin
Input Voltage
(V EN)
EN= ”Low”
Input Voltage
(V ENL)
OV Detection
Voltage(V OVD)
Output Voltage
(VOUT)
UV Detection
Voltage (V UVD)
PG Pin
Output Voltage
(V PG)
PG Output When EN = "Low"
OV Detection
Voltage (V OVD)
Output Voltage
(VOUT)
UV Detection
Voltage (VUVD)
PG Pin
Output Voltage
(VPG )
PG Output When OV or UV is Detected
Pass-Through Mode
This product enters pass-through mode when the input / output voltage difference drops. In this operating state, the high
side MOSFET is always on and the low side MOSFET is always off. This function helps to hold output voltage and to lengthen
operation time of application longest even when battery voltage drops. In this operating state, the output voltage is calculated
by the following equation using the on-resistance of the high side MOSFET(RONP) and the DC resistance of the inductor (RL).
VOUT = VIN – (RONP + RL) × IOUT
Ver.1.3
- 17 -
Datasheet
NC2600 series
THERMAL CHARACTERISTICS (WLCSP-8-P11)
Thermal characteristics depend on the mounting conditions.
The following measurement conditions are based on JEDEC STD. 51.
Measurement Conditions
Parameter
Measurement Conditions
Measurement status
Mounting on Board (Wind Velocity = 0 m/s)
Board material
Glass Cloth Epoxy Plastic (Four-Layer Board)
Board size
101.5 mm × 114.5 mm × 1.6 mm
Outer Layers (First and Fourth Layers): 60%
Inner Layers (Second and Third Layers): 100%
Copper Ratio
Measurement Result
Parameter
Thermal Resistance
(θja)
Thermal Characterization
Parameter (ψjt)
Unit
Measurement Result
131
°C/W
38
θja：Junction-to-Ambient Thermal Resistance
ψjt：Junction-to-Top Thermal Characterization Parameter
Measurement Board Pattern (WLCSP-8-P11)
CALCULATION METHOD OF JUNCTION TEMPERATURE
The junction temperature (Tj) can be calculated from the following equation.
Tj = Ta + θja × P
Tj = Tc (top) + ψjt × P
Ta : Ambient temperature
Tc (top) : Package mark side center temperature
P : Power consumption under user’s conditions
P=
Ver.1.3
(100 / η – 1) × (VOUT × IOUT) – DCR × IOUT 2
η : Efficiency under user’s conditions [%]
VOUT : Output Voltage [V]
IOUT : Output Current [A]
DCR : DC resistance of external inductor [Ω]
- 18 -
Datasheet
NC2600 series
THERMAL CHARACTERISTICS (DFN2020-8-GT)
Thermal characteristics depend on the mounting conditions.
The following measurement conditions are based on JEDEC STD. 51.
Measurement Conditions
Parameter
Measurement Conditions
Measurement status
Board material
Mounting on Board (Wind Velocity = 0 m/s)
Glass Cloth Epoxy Plastic (Four-Layer Board)
Board size
76.2 mm × 114.3 mm × 0.8 mm
Outer Layer (First Layer):
Less than 95% of 50 mm Square
Inner Layers (Second and Third Layers):
Approx. 100% of 50 mm Square
Outer Layer (Fourth Layer):
Approx. 100% of 50 mm Square
φ 0.3 mm × 23 pcs.
Copper Ratio
Through hole
Measurement Result
Parameter
Measurement Result
Thermal Resistance
(θja)
Thermal Characterization
Parameter (ψjt)
Unit
71
°C/W
33
θja：Junction-to-Ambient Thermal Resistance
ψjt：Junction-to-Top Thermal Characterization Parameter
Measurement Board Pattern (DFN2020-8-GT)
CALCULATION METHOD OF JUNCTION TEMPERATURE
The junction temperature (Tj) can be calculated from the following equation.
Tj = Ta + θja × P
Tj = Tc (top) + ψjt × P
Ta : Ambient temperature
Tc (top) : Package mark side center temperature
P : Power consumption under user’s conditions
P=
Ver.1.3
(100 / η – 1) × (VOUT × IOUT) – DCR × IOUT 2
η : Efficiency under user’s conditions [%]
VOUT : Output Voltage [V]
IOUT : Output Current [A]
DCR : DC resistance of external inductor [Ω]
- 19 -
Datasheet
NC2600 series
MARKING SPECIFICATION （NC2600ZA）
: Product Code
: Lot No. … Alphanumerical Serial Number
①②③④
WLCSP-8-P11 Marking
NOTICE
There can be variation in the marking when different AOI (Automated Optical Inspection) equipment is
used. In the case of recognizing the marking characteristic with AOI, please contact our sales or
distributor before attempting to use AOI.
Ver.1.3
- 20 -
Datasheet
NC2600 series
NC2600ZA Marking List
Ver.1.3
Product Code
Product Code
Product Code
NC2600ZA000A
A
A
NC2600ZA150B
E
P
NC2600ZA250C
H
F
NC2600ZA060A
A
C
NC2600ZA160B
E
R
NC2600ZA260C
H
G
NC2600ZA070A
A
E
NC2600ZA170B
E
T
NC2600ZA270C
H
H
NC2600ZA080A
A
F
NC2600ZA180B
E
U
NC2600ZA280C
H
J
NC2600ZA090A
A
G
NC2600ZA190B
E
V
NC2600ZA290C
H
K
NC2600ZA100A
A
H
NC2600ZA200B
E
X
NC2600ZA300C
H
L
NC2600ZA110A
A
J
NC2600ZA210B
E
Y
NC2600ZA310C
H
N
NC2600ZA120A
A
K
NC2600ZA220B
F
A
NC2600ZA320C
H
P
NC2600ZA130A
A
L
NC2600ZA230B
F
C
NC2600ZA330C
H
R
NC2600ZA140A
A
N
NC2600ZA240B
F
E
NC2600ZA000D
J
A
NC2600ZA150A
A
P
NC2600ZA250B
F
F
NC2600ZA060D
J
C
NC2600ZA160A
A
R
NC2600ZA260B
F
G
NC2600ZA070D
J
E
NC2600ZA170A
A
T
NC2600ZA270B
F
H
NC2600ZA080D
J
F
NC2600ZA180A
A
U
NC2600ZA280B
F
J
NC2600ZA090D
J
G
NC2600ZA190A
A
V
NC2600ZA290B
F
K
NC2600ZA100D
J
H
NC2600ZA200A
A
X
NC2600ZA300B
F
L
NC2600ZA110D
J
J
NC2600ZA210A
A
Y
NC2600ZA310B
F
N
NC2600ZA120D
J
K
NC2600ZA220A
C
A
NC2600ZA320B
F
P
NC2600ZA130D
J
L
NC2600ZA230A
C
C
NC2600ZA330B
F
R
NC2600ZA140D
J
N
NC2600ZA240A
C
E
NC2600ZA000C
G
A
NC2600ZA150D
J
P
NC2600ZA250A
C
F
NC2600ZA060C
G
C
NC2600ZA160D
J
R
NC2600ZA260A
C
G
NC2600ZA070C
G
E
NC2600ZA170D
J
T
NC2600ZA270A
C
H
NC2600ZA080C
G
F
NC2600ZA180D
J
U
NC2600ZA280A
C
J
NC2600ZA090C
G
G
NC2600ZA190D
J
V
NC2600ZA290A
C
K
NC2600ZA100C
G
H
NC2600ZA200D
J
X
NC2600ZA300A
C
L
NC2600ZA110C
G
J
NC2600ZA210D
J
Y
NC2600ZA310A
C
N
NC2600ZA120C
G
K
NC2600ZA220D
K
A
NC2600ZA320A
C
P
NC2600ZA130C
G
L
NC2600ZA230D
K
C
NC2600ZA330A
C
R
NC2600ZA140C
G
N
NC2600ZA240D
K
E
NC2600ZA000B
E
A
NC2600ZA150C
G
P
NC2600ZA250D
K
F
NC2600ZA060B
E
C
NC2600ZA160C
G
R
NC2600ZA260D
K
G
NC2600ZA070B
E
E
NC2600ZA170C
G
T
NC2600ZA270D
K
H
NC2600ZA080B
E
F
NC2600ZA180C
G
U
NC2600ZA280D
K
J
NC2600ZA090B
E
G
NC2600ZA190C
G
V
NC2600ZA290D
K
K
NC2600ZA100B
E
H
NC2600ZA200C
G
X
NC2600ZA300D
K
L
NC2600ZA110B
E
J
NC2600ZA210C
G
Y
NC2600ZA310D
K
N
NC2600ZA120B
E
K
NC2600ZA220C
H
A
NC2600ZA320D
K
P
NC2600ZA330D
K
R
NC2600ZA130B
E
L
NC2600ZA230C
H
C
NC2600ZA140B
E
N
NC2600ZA240C
H
E
- 21 -
Datasheet
NC2600 series
MARKING SPECIFICATION （NC2600GT）
: Product Code
: Lot No. … Alphanumerical Serial Number
①②③
④⑤⑥
DFN2020-8-GT Part Markings
NOTICE
There can be variation in the marking when different AOI (Automated Optical Inspection) equipment is used. In
the case of recognizing the marking characteristic with AOI, please contact our sales or our distributor before
attempting to use AOI.
Ver.1.3
- 22 -
Datasheet
NC2600 series
NC2600GT Marking List
Ver.1.3
Product Code
NC2600GT000A
1 A 0 0
Product Code
NC2600GT000B
1 B 0 0
NC2600GT060A
1 A 0 1
NC2600GT060B
1 B 0 1
NC2600GT070A
1 A 0 2
NC2600GT070B
1 B 0 2
NC2600GT080A
1 A 0 3
NC2600GT080B
1 B 0 3
NC2600GT090A
1 A 0 4
NC2600GT090B
1 B 0 4
NC2600GT100A
1 A 0 5
NC2600GT100B
1 B 0 5
NC2600GT110A
1 A 0 6
NC2600GT110B
1 B 0 6
NC2600GT120A
1 A 0 7
NC2600GT120B
1 B 0 7
NC2600GT130A
1 A 0 8
NC2600GT130B
1 B 0 8
NC2600GT140A
1 A 0 9
NC2600GT140B
1 B 0 9
NC2600GT150A
1 A 1 0
NC2600GT150B
1 B 1 0
NC2600GT160A
1 A 1 1
NC2600GT160B
1 B 1 1
NC2600GT170A
1 A 1 2
NC2600GT170B
1 B 1 2
NC2600GT180A
1 A 1 3
NC2600GT180B
1 B 1 3
NC2600GT190A
1 A 1 4
NC2600GT190B
1 B 1 4
NC2600GT200A
1 A 1 5
NC2600GT200B
1 B 1 5
NC2600GT210A
1 A 1 6
NC2600GT210B
1 B 1 6
NC2600GT220A
1 A 1 7
NC2600GT220B
1 B 1 7
NC2600GT230A
1 A 1 8
NC2600GT230B
1 B 1 8
NC2600GT240A
1 A 1 9
NC2600GT240B
1 B 1 9
NC2600GT250A
1 A 2 0
NC2600GT250B
1 B 2 0
NC2600GT260A
1 A 2 1
NC2600GT260B
1 B 2 1
NC2600GT270A
1 A 2 2
NC2600GT270B
1 B 2 2
NC2600GT280A
1 A 2 3
NC2600GT280B
1 B 2 3
NC2600GT290A
1 A 2 4
NC2600GT290B
1 B 2 4
NC2600GT300A
1 A 2 5
NC2600GT300B
1 B 2 5
NC2600GT310A
1 A 2 6
NC2600GT310B
1 B 2 6
NC2600GT320A
1 A 2 7
NC2600GT320B
1 B 2 7
NC2600GT330A
1 A 2 8
NC2600GT330B
1 B 2 8
- 23 -
Datasheet
NC2600 series
NC2600GT Marking List
Ver.1.3
Product Code
NC2600GT000C
1 C 0 0
Product Code
NC2600GT000D
1 D 0 0
NC2600GT060C
1 C 0 1
NC2600GT060D
1 D 0 1
NC2600GT070C
1 C 0 2
NC2600GT070D
1 D 0 2
NC2600GT080C
1 C 0 3
NC2600GT080D
1 D 0 3
NC2600GT090C
1 C 0 4
NC2600GT090D
1 D 0 4
NC2600GT100C
1 C 0 5
NC2600GT100D
1 D 0 5
NC2600GT110C
1 C 0 6
NC2600GT110D
1 D 0 6
NC2600GT120C
1 C 0 7
NC2600GT120D
1 D 0 7
NC2600GT130C
NC2600GT140C
1 C 0 8
1 C 0 9
NC2600GT130D
NC2600GT140D
1 D 0 8
1 D 0 9
NC2600GT150C
NC2600GT160C
NC2600GT170C
NC2600GT180C
1
1
1
1
0
1
2
3
NC2600GT150D
NC2600GT160D
NC2600GT170D
NC2600GT180D
1
1
1
1
NC2600GT190C
1 C 1 4
NC2600GT190D
1 D 1 4
NC2600GT200C
1 C 1 5
NC2600GT200D
1 D 1 5
NC2600GT210C
1 C 1 6
NC2600GT210D
1 D 1 6
NC2600GT220C
NC2600GT230C
1 C 1 7
1 C 1 8
NC2600GT220D
NC2600GT230D
1 D 1 7
1 D 1 8
NC2600GT240C
1 C 1 9
NC2600GT240D
1 D 1 9
NC2600GT250C
1 C 2 0
NC2600GT250D
1 D 2 0
NC2600GT260C
1 C 2 1
NC2600GT260D
1 D 2 1
NC2600GT270C
1 C 2 2
NC2600GT270D
1 D 2 2
NC2600GT280C
1 C 2 3
NC2600GT280D
1 D 2 3
NC2600GT290C
1 C 2 4
NC2600GT290D
1 D 2 4
NC2600GT300C
1 C 2 5
NC2600GT300D
1 D 2 5
NC2600GT310C
1 C 2 6
NC2600GT310D
1 D 2 6
NC2600GT320C
1 C 2 7
NC2600GT320D
1 D 2 7
NC2600GT330C
1 C 2 8
NC2600GT330D
1 D 2 8
C
C
C
C
1
1
1
1
D
D
D
D
1
1
1
1
0
1
2
3
- 24 -
Datasheet
NC2600 series
APPLICATION NOTES
Operation of Step-down Switching Regulator and Output Current
The operation of the step-down switching regulator is explained.
Step1. The high side MOSFET turns on and the inductor current IL = i1 flows, storing energy in the inductor and at the same
time charging to the COUT. Then, the inductor current IL = i1 increases from ILLOW in proportion to the time when the
high side MOSFET turns on and reaches ILHIGH.
Step2. When the high side MOSFET turns off and the low side MOSFET turns on, the inductor operates to hold the inductor
current IL = ILHIGH. At this time, the inductor uses the energy stored in Step 1 to flow the inductor current IL = i2.
Step3. i2 gradually decreases until the low side MOSFET is turned off. When the next cycle, it returns to Step 1 again and the
high side MOSFET turns on.
By performing Step 1 to 3 above cyclically, an arbitrary output voltage is obtained according to the ratio of on time for one cycle.
i1
L
IOUT
IL
High Side
MOSFET
VIN
Low Side
MOSFET
ILHIGH
ILLOW
i2
COUT
ΔIL
VOUT
0
tON
tOFF
t
tPERIOD = 1/fOSC
Basic Circuit of Step-down Switching Regulator
Current Through Inductor
When the maximum current of the inductor is ILHIGH and the minimum value is ILLOW, the difference between ILHIGH and ILLOW
ΔIL is called the current ripple, ΔIL = ILHIGH - ILLOW. The current ripple ΔIL during Step 1 is shown by using tON (on-time), VIN,
VOUT, and L (inductor value) as follows.
∆IL = (VIN − VOUT) × tON / L ············································································································ (2)
On the other hand, during Step2, it is represented by the following equation using tOFF (off-time).
∆IL = VOUT × tOFF / L ···················································································································· (3)
Since In the static state, the values of equations (2) and (3) are the same,
(VIN − VOUT) × tON / L = VOUT × tOFF / L ····························································································· (4)
Therefore, tON / tPERIOD is shown by following equation.
tON / tPERIOD = VOUT / VIN ··············································································································· (5)
Where tPERIOD is the period and is shown by the following equation.
tPERIOD = tON + tOFF = 1 / fOSC ········································································································· (6)
fOSC is the switching frequency.
Duty is the ratio of the time that the high side MOSFET is on during one cycle and can be calculated by the following equation.
Duty (%) = tON / tPERIOD × 100 = VOUT / VIN × 100 ··············································································· (7)
Ver.1.3
- 25 -
Datasheet
NC2600 series
Calculation Conditions of SW Pin Maximum Output Current (ISWMAX)
The following equations explain the calculation to determine ISWMAX at the ideal operation of the ICs in continuous conduction
mode.
The p-p value of the ripple current is IRP, the on-resistance of the high side MOSFET and low side MOSFETs is RONP and
RONN, respectively, and the DC resistance of the inductor is RL.
First, define tON be the time when the high side MOSFET is on.
VIN = VOUT + (RONP + RL) × IOUT + L × IRP / tON ··········································································································································· (8)
Next, define tOFF be the time when the high side MOSFET is off (low side MOSFET is on).
L × IRP / tOFF = RONN × IOUT + VOUT + RL × IOUT ··········································································································································· (9)
Put Equation (9) into Equation (8) to solve DON = tON / (tOFF + tON) that is on-duty of high side MOSFET.
DON = (VOUT + RONN × IOUT + RL × IOUT) / (VIN + RONN × IOUT − RONP × IOUT) ··········································································· (10)
Ripple Current (IRP) is as follows.
IRP = (VIN − VOUT − RONP × IOUT − RL × IOUT) × DON / fOSC / L ············································································································(11)
The peak current flowing through the inductor and high side MOSFET can be calculated by the following equation.
ISWMAX = IOUT + IRP / 2 ··························································································································································································· (12)
Ver.1.3
- 26 -
Datasheet
NC2600 series
Typical Application Circuit
L
VIN
RPG
VPG
VIN
SW
NC2600xxxxx
A/B/C/D
CSS
PG
MODE
CIN
EN
VOUT
CSS
COUT
FB
GND
NC2600xxxxx (Fixed Output Voltage Type)
L
VIN
RPG
VPG
CIN
VIN
SW
NC2600xx000
A/B/C/D
CSS
PG
MODE
EN
CSS
FB
VOUT
R11
C1
R12
R0
COUT
R2
GND
NC2600xx000 (Adjustable Output Voltage Type)
Recommended external parts
Ver.1.3
Symbol
Capacitance
Tolerance
Protection Voltage
Temperature characteristics
CIN
4.7 µF
±20%
6.3 V
X5R
COUT
10 µF
±20%
6.3 V
X5R
CSS
-
±20%
6.3 V
X5R
Symbol
Inductance
Tolerance
Rated Current
L
1.0 µH
±20%
2.0A
- 27 -
Datasheet
NC2600 series
External Resistor for Setting Output Voltage (NC2600xx000x)
The output voltage can be set by the external resistors (R1, R2) connected to the FB pin as shown in the following equation.
VSET = VFB × (R1 + R2) / R2
R1 = R11 + R12
The reference voltage (VFB) of this IC is set 0.6 V. The VFB accuracy and output voltage setting range are as follows.
: 0.6 V ± 9 mV
VFB Accuracy
Output Voltage Setting Range : 0.6 V ≤ VSET ≤ 5.5 V
Recommended values for R1, R2, and C1 are shown below.
Set Output Voltage (VSET) vs. R1,R2,C1 (Adjustable Output Voltage Type)
VSET [V]
R1 [kΩ]
R2 [kΩ]
0.6
0
220
0 . 6 < VSET ≤ 2 . 1
220
2 . 1 < VSET ≤ 4 . 0
R1 = (VSET / VFB -1) x R2
47
4 . 0 < VSET ≤ 5 . 5
33
C1 [pF]
Open
10
6.8
3.3
When using R2 other than the above table, adjust C1 according to the table below and check that there is no problem with
the actual application.
Set Output Voltage (VSET) vs. R2/C1 (Adjustable Output Voltage Type)
VSET [V]
C1 [pF]
0.6
Open
0 . 6 < VSET ≤ 2 . 1
2200 / R2 [kΩ]
2 . 1 < VSET ≤ 4 . 0
319.6 / R2 [kΩ]
4 . 0 < VSET ≤ 5 . 5
108.9 / R2 [kΩ]
R0 prevents against the effects of noise. Noise varies depending on the board layout. R0 is not required for optimized boards, but
if you are concerned about spikes, use about 1 kΩ.
Ver.1.3
- 28 -
Datasheet
NC2600 series
Cautions for Selecting External Components
•
Choose a low ESR ceramic capacitor. The input capacitor (CIN) between VIN and GND should be more than 4.7 µF, and the
output capacitor (COUT) should be used of 10 µF. Also, choose the capacitor with consideration for bias characteristics and
input/output voltages.
Even when using a capacitor other than a ceramic capacitor such as aluminum electrolytic, connect a ceramic capacitor with
shortest-distance wiring.
•
The phase compensation of this device is designed according to the COUT and L values. The inductance value of an inductor
should be 1.0 µH to gain stability.
•
Choose an inductor that has small DC resistance, has enough permissible current and is hard to cause magnetic saturation. If
the inductance value of the inductor becomes extremely small under the load conditions, the peak current of inductor may increase
along with the load current. As a result, the current limit circuit may start to operate before the peak current of inductor reaches to
load current range. Therefore, choose an inductor with consideration for the value of ISWMAX.
Refer to the data sheet "Calculation Conditions of SW Pin Maximum Output Current (ISWMAX)".
Ver.1.3
- 29 -
Datasheet
NC2600 series
Evaluation Board / PCB Layout
NC2600ZA [WLCSP-8-P11]
Ver.1.3
Layer 1
Layer 2
Layer 3
Layer 4
- 30 -
Datasheet
NC2600 series
NC2600GT [DFN2020-8-GT]
Ver.1.3
Layer 1
Layer 2
Layer 3
Layer 4
- 31 -
Datasheet
NC2600 series
TECHNICAL NOTES
The performance of a power source circuit using this device is highly dependent on a peripheral circuit. A peripheral component
or the device mounted on PCB should not exceed a rated voltage, a rated current or a rated power. When designing a
peripheral circuit, please be fully aware of the following points.
•
•
External components must be connected as close as possible to the ICs and make wiring as short as possible and on the
same side of the IC. Especially, the capacitor connected in between VIN pin and GND pin must be wiring the shortest.
The VIN line, the GND line, and SW pin should make special considerations for the large switching current flows. If their
impedance is high, internal voltage of the IC may shift by the switching current, and the operating may be unstable. Make
the power supply and GND lines as wide and short as possible. The wiring from the SW pin to the inductor becomes a
noise source, so ensure that the current capacity is secured and that the wiring is not wider or longer than necessary so
that the noise does not increase.
•
Connect COUT to the wiring between the FB pin and the inductor(L), or between the output voltage setting resistor (R1) and
L. Also, keep them as far away as possible from noise sources such as inductors to prevent noise from being mixed in.
•
The thermal shutdown function prevents the IC from fuming and ignition but does not ensure the IC’s reliability or keep the
IC below the absolute maximum ratings. The thermal shutdown function does not operate on the heat generated by other
than the normal IC operation such as latch-up and overvoltage application. The thermal shutdown function operates in a
state over the absolute maximum ratings, therefore the thermal shutdown function should not be used for a system design.
•
The tab on the bottom side of the DFN-Package is recommended to be connected to GND. It will work even if it is open,
but please note that the heat dissipation and mounting strength will decrease.
Ver.1.3
- 32 -
Datasheet
NC2600 series
TYPICAL CHARACTERISTICS
Typical characteristics are intended to be used as reference data, they are not guaranteed.
1)Efficiency vs Output Current
100
100
90
90
80
80
70
70
Efficiency [%]
NC2600ZA
VOUT = 1.8 [V]
Efficiency [%]
NC2600ZA
VOUT = 1.2 [V]
60
50
MODE=High
MODE=Low
40
30
VVin=2.5V
IN = 2.5 [V]
VVin=3.6V
IN = 3.6 [V]
VVin=4.2V
IN = 4.2 [V]
VVin=5.0V
IN = 5.0 [V]
20
10
0
0.01
0.1
1
10
100
1000
60
50
40
30
VVin=2.5V
IN = 2.5 [V]
VVin=3.6V
IN = 3.6 [V]
VVin=4.2V
IN = 4.2 [V]
VVin=5.0V
IN = 5.0 [V]
20
10
0
0.01
10000
0.1
Output Current IOUT [mA]
100
90
90
80
80
70
70
50
Efficiency [%]
100
Efficiency [%]
NC2600GT
VOUT = 1.2 [V]
MODE=High
MODE=Low
40
30
20
0
0.01
0.1
1
10
100
1000
50
40
0
0.01
10000
0.1
80
70
70
60
MODE=High
Vin=2.5V
V
IN = 2.5 [V]
V
Vin=3.6V
IN = 3.6 [V]
V
Vin=4.2V
IN = 4.2 [V]
V
Vin=5.0V
IN = 5.0 [V]
10
0
0.01
0.1
1
10
100
Output Current IOUT [mA]
Ver.1.3
1000
10000
Efficiency [%]
90
80
Efficiency [%]
100
90
20
1
10
100
1000
10000
Output Current IOUT [mA]
100
30
10000
Vin=2.5V
VIN = 2.5 [V]
Vin=3.6V
VIN = 3.6 [V]
Vin=4.2V
VIN = 4.2 [V]
VIN = 5.0 [V]
Vin=5.0V
10
NC2600GT
VOUT = 3.3 [V]
40
1000
MODE=High
MODE=Low
30
NC2600GT
VOUT = 1.8 [V]
MODE=Low
100
60
Output Current IOUT [mA]
50
10
20
VIN = 4.2 [V]
Vin=4.2V
VIN = 5.0 [V]
Vin=5.0V
10
1
Output Current IOUT [mA]
NC2600ZA
VOUT = 3.3 [V]
60
MODE=High
MODE=Low
60
50
MODE=High
MODE=Low
40
30
20
Vin=4.2V
VIN = 4.2 [V]
VIN = 5.0 [V]
Vin=5.0V
10
0
0.01
0.1
1
10
100
1000
10000
Output Current IOUT [mA]
- 33 -
Datasheet
NC2600 series
2)Output Voltage vs Output Current
NC2600ZA
VOUT = 1.8 [V]
MODE = Low
2
1.818
1
1.800
0
1.782
-1
1.764
-2
0
500
1000
1.836
1.800
0
1.782
-1
1.764
-2
0
500
1.818
1
1.800
0
1.782
-1
1.764
-2
0
500
1000
1.836
1
1.800
0
1.782
-1
1.764
-2
0
500
Maximum Output Current IOUT [mA]
Maximum Output Current IOUT [mA]
2000
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
3.0
3.5
4.0
1000
-3
2000
1500
VOUT = 1.2 [V]
2200
2.5
2
Output Current IOUT [mA]
3)Maximum Output Current vs VIN
MODE = High
NC2600ZA
VOUT = 0.6 [V]
1200
Vin=3.6V
V
IN = 3.6 [V]
V
Vin=5.0V
IN = 5.0 [V]
1.818
1.746
-3
2000
1500
3
V
Vin=2.5V
IN = 2.5 [V]
V
Vin=4.2V
IN = 4.2 [V]
Output Voltage VOUT [%]
2
Output Voltage VOUT [V]
1.836
Vin=3.6V
VIN = 3.6 [V]
VIN = 5.0 [V]
Vin=5.0V
Output Voltage VOUT [%]
Output Voltage VOUT [V]
1.854
3
Vin=2.5V
VIN = 2.5 [V]
VIN = 4.2 [V]
Vin=4.2V
Output Current IOUT [mA]
4.5
Input Voltage VIN [V]
Ver.1.3
-3
2000
1500
MODE = High
1.854
2.0
1000
Output Current IOUT [mA]
NC2600GT
VOUT = 1.8 [V]
MODE = Low
1000
2
1
Output Current IOUT [mA]
1.746
3
1.818
1.746
-3
2000
1500
VIN = 3.6 [V]
Vin=3.6V
VIN = 5.0 [V]
Vin=5.0V
Vin=2.5V
VIN = 2.5 [V]
VIN = 4.2 [V]
Vin=4.2V
Output Voltage VOUT [%]
Vin=3.6V
VIN = 3.6 [V]
VIN = 5.0 [V]
Vin=5.0V
Output Voltage VOUT [V]
1.836
1.746
1.854
3
Vin=2.5V
VIN = 2.5 [V]
VIN = 4.2 [V]
Vin=4.2V
Output Voltage VOUT [%]
Output Voltage VOUT [V]
1.854
MODE = High
5.0
5.5
2200
2000
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
1200
1000
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage VIN [V]
- 34 -
Datasheet
NC2600 series
VOUT = 3.3 [V]
2200
Maximum Output Current IOUT [mA]
Maximum Output Current IOUT [mA]
VOUT = 1.8 [V]
2000
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
1200
1000
2.0
2.5
3.0
3.5
4.0
4.5
5.0
2200
2000
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
1200
1000
5.5
2.0
2.5
2200
2000
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
1200
1000
2.5
3.0
3.5
4.0
4.5
5.0
5.0
5.5
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
1200
1000
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage VIN [V]
VOUT = 3.3 [V]
2200
Maximum Output Current IOUT [mA]
Maximum Output Current IOUT [mA]
4.5
2000
5.5
VOUT = 1.8 [V]
2000
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
1200
1000
2.5
3.0
3.5
4.0
4.5
Input Voltage VIN [V]
Ver.1.3
4.0
2200
Input Voltage VIN [V]
2.0
3.5
VOUT = 1.2 [V]
Maximum Output Current IOUT [mA]
Maximum Output Current IOUT [mA]
NC2600GT
VOUT = 0.6 [V]
2.0
3.0
Input Voltage VIN [V]
Input Voltage VIN [V]
5.0
5.5
2200
2000
1800
1600
1400
Ta=－40°C
Ta= 25°C
Ta= 85°C
1200
1000
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage VIN [V]
- 35 -
Datasheet
NC2600 series
4)Switching Frequency vs Input Voltage
IOUT = 1 [mA]
MODE = Low
IOUT = 1 [mA]
MODE = High
5000
35
Vout=1.2V
VOUT = 1.2 [V]
VOUT = 1.8 [V]
Vout=1.8V
VOUT = 3.3 [V]
Vout=3.3V
25
4500
Frequency [kHz]
Frequency [kHz]
30
20
15
10
3500
3000
2500
2000
Vout=1.2V
VOUT = 1.2 [V]
VOUT = 1.8 [V]
Vout=1.8V
VOUT = 3.3 [V]
Vout=3.3V
1500
5
0
4000
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1000
5.5
2.0
2.5
Input Voltage VIN [V]
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage VIN [V]
IOUT = 1000 [mA]
MODE = Low
5000
Frequency [kHz]
4500
4000
3500
3000
2500
2000
V
Vout=1.2V
OUT = 1.2 [V]
V
Vout=1.8V
OUT = 1.8 [V]
V
OUT = 3.3 [V]
Vout=3.3V
1500
1000
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage VIN [V]
5)Load Transient Response
VIN = VEN = 3.6 [V] , VOUT = 1.8 [V]
MODE = Low
IOUT = 1 [mA] -> 500 [mA]
IOUT = 500 [mA] -> 1 [mA]
0
2.0
1.9
VOUT
1.8
1.7
1.6
-50
0
50
100
Time [µs]
Ver.1.3
150
200
250
IOUT
1000
500
0
2.0
VOUT
1.9
1.8
1.7
1.6
-200
0
200
400
600
800
Output Current IOUT [mA]
500
Output Voltage VOUT [V]
1000
IOUT
1500
Output Current IOUT [mA]
Output Voltage VOUT [V]
1500
1000
Time [µs]
- 36 -
Datasheet
NC2600 series
IOUT = 1 [mA] -> 1000 [mA]
IOUT = 1000 [mA] -> 1 [mA]
500
0
2.0
1.9
VOUT
1.8
1.7
100
200
300
2.0
VOUT
1.9
1.8
1.7
1.6
-500
400
0
500
1000
500
1.9
VOUT
1.8
1.7
50
100
Output Voltage VOUT [V]
1000
Output Current IOUT [mA]
Output Voltage VOUT [V]
1500
2.0
IOUT
1.9
VOUT
1.8
1.6
-50
0
0
2.0
1.9
VOUT
1.8
100
150
1500
Output Voltage VOUT [V]
1000
Output Current IOUT [mA]
Output Voltage VOUT [V]
150
1500
1.7
Ver.1.3
100
IOUT = 1000 [mA] -> 1 [mA]
500
Time [µs]
50
Time [µs]
IOUT
50
0
1.7
150
IOUT = 1 [mA] -> 1000 [mA]
0
500
2.0
Time [µs]
-50
2000
1500
0
1.6
1500
IOUT = 500 [mA] -> 1 [mA]
IOUT
0
1000
Time [µs]
MODE = High
IOUT = 1 [mA] -> 500 [mA]
-50
500
0
Time [µs]
1.6
1000
Output Current IOUT [mA]
0
IOUT
1000
IOUT
500
0
2.0
VOUT
1.9
1.8
1.7
1.6
-50
0
50
100
Output Current IOUT [mA]
1.6
-100
Output Voltage VOUT [V]
1000
Output Current IOUT [mA]
Output Voltage VOUT [V]
IOUT
Output Current IOUT [mA]
1500
1500
150
Time [µs]
- 37 -
Datasheet
NC2600 series
6)Output Voltage Waveform
VIN = VEN = 3.6 [V] , VOUT = 1.8 [V]
IOUT = 1 [mA]
MODE = Low
MODE = High
200
0
1.84
VOUT
1.82
1.80
1.78
0
200
400
600
800
200
0
1.84
VOUT
1.82
1.80
1.78
1.76
1000 1200
0.0
0.5
Time [µs]
1400
1000
800
1.84
VOUT
1.82
1.80
1.78
0.5
1.0
1.5
Output Voltage VOUT [V]
1200
Time [µs]
1200
1000
800
1.84
VOUT
1.82
1.80
1.78
1.76
2.0
1400
ISW
Inductor Current ISW [mA]
Output Voltage VOUT [V]
2.0
1.5
MODE = High
ISW
0.0
1.0
Time [µs]
IOUT = 1000 [mA]
MODE = Low
1.76
400
0.0
0.5
1.0
1.5
Inductor Current ISW [mA]
1.76
Output Voltage VOUT [V]
400
600
ISW
Inductor Current ISW [mA]
600
Inductor Current ISW [mA]
Output Voltage VOUT [V]
ISW
2.0
Time [µs]
7)Output Voltage vs Temperature
VIN = VEN = 3.6 [V] , VOUT = 1.8 [V]
IOUT = 0 [mA]
MODE = High
1.90
Output Voltage VOUT [V]
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
-50
-25
0
25
50
75
100
Temperature Ta [°C]
Ver.1.3
- 38 -
Datasheet
NC2600 series
8)Soft-Start Waveform
VOUT = 1.8 [V], MODE = High, CSS = open, IOUT = 0 [mA]
VIN = 3.6 [V], VEN = 0 -> 3.6 [V]
8
VEN
2V/DIV
6
4
VOUT
1V/DIV
2
2.0
0
VPG
1.0
2V/DIV
0.0
0
200
400
600
800
Time [us]
9)Input Current vs Input Voltage
MODE = Low
VOUT = 2.1 [V]
VOUT = 3.3 [V]
8
7
-40℃
7
-40℃
6
25℃
6
25℃
5
85℃
5
85℃
Input Current IIN [mA]
Input Current IIN [mA]
8
4
3
2
1
0
2.1
2.2
2.3
2.4
4
3
2
1
0
2.5
2.6
3.3
3.4
3.5
3.6
3.7
3.8
Input Voltage VIN [V]
Input Voltage [V]
VOUT = 5.0 [V]
Input Current IIN [mA]
8
7
-40℃
6
25℃
5
85℃
4
3
2
1
0
5.0
5.1
5.2
5.3
5.4
5.5
Input Voltage VIN [V]
*Note that if the voltage difference between VIN and VOUT decreases, switching current increases regardless of IOUT.
Ver.1.3
- 39 -
Datasheet
NC2600 series
TEST CIRCUIT
L
VIN
RPG
VPG
VIN
SW
NC2600xxxxx
A/B/C/D
CSS
PG
MODE
CIN
EN
VOUT
CSS
COUT
FB
GND
NC2600xxxxx (Fixed Output Voltage Type) Test Circuit
【Components List for Our Evaluation】
Ver.1.3
Symbol
Specification
Parts Number
CIN
4.7 µF
GRM035R60J475ME
COUT
10 µF
GRM155R60J106ME44
L
1.0 µH
TFM201610ALM-1R0MTAA
- 40 -
Package Information
WLCSP-8-P11
PI-WLCSP-8-P11-E-C
■ PACKAGE DIMENSIONS
UNIT: mm
1.62 ±0.05
0.40
(0.21)
0.05
S
S
0. 40
1
D
C
B
A
φ0.245 ±0.03
φ0.05 M
S AB
0.08 ± 0.02
0.3 6 ±0.0 4
INDEX MARK
2
(0.29)
B
0.98 ± 0.05
A
■ EXAMPLE OF SOLDER PADS DIMENSIONS
8 × φ0.245
0.4
0.4
Recommended Land Pattern
NSMD Pad Definition
Solder Mask
Copper Pad
Substrate
NSMD
Pad definition
NSMD
(Non-Solder Mask defined)
Copper Pad
Solder Mask Opening
0.245mm
MIN. 0.345mm
*) Pad Layout and size can modify by customers material, equipment and
method.
*) Please adjust pad layout according to your conditions.
*) Recommended Stencil Aperture Size: 0.245mm
Package Information
WLCSP-8-P11
PI-WLCSP-8-P11-E-C
■ PACKING SPEC
UNIT: mm
2.0 ±0.05
1.55 ±0.05
4.0 ±0.1
3. 5 ± 0.05
1. 79 ± 0.04
(E2)
4.0 ±0.1
1.15 ±0.04
0.5 ±0.05
0.2 ±0.05
8.0
Insert direction
+0.3
-0.1
Carrier tape material: PS
Cover tape material: PE
1 .75 ± 0.1
(1) Taping dimensions / Insert direction
0.48 ±0.03
(2) Taping state
Feed direction
Sealing with covering tape
Trailer part
Devices
Leader part
more than 160mm
5000pcs/reel
more than 550mm
Package Information
WLCSP-8-P11
PI-WLCSP-8-P11-E-C
(3) Reel dimensions
11.4 ±1.0
13 ±0.2
21 ±0.8
Reel material: PS
9
+1.0
-0.3
(4) Peeling strength
Peeling strength of cover tape
・Peeling angle
165 to 180°degrees to the taped surface.
・Peeling speed
300mm/min
・Peeling strength
0.1 to 1.0N
Cover tape
165 to 180 °
Direction to pull
Feed direction
Carrier tape
180 -30
60 +10
2 ±0.5
Package Information
WLCSP-8-P11
PI-WLCSP-8-P11-E-C
(5) Packing state
Prodcut name, Quantity, Lot No, Mark
1reel
Box size：185×185×20
MAX: 5reel
Box size：185×185×80
Package Surface Temperature(℃)
■ HEAT-RESISTANCE PROFILES
3℃/s MAX.
255℃
260℃
30s MAX.
200℃
6℃/s MAX.
217℃
150℃
60-150s
60-120s
Time(s)
Reflow profile
Package Information
DFN2020-8-GT
PI-DFN2020-8-GT-E-A
■ PACKAGE DIMENSIONS
1.7 ±0.1
2.0 ±0.1
(0.2MIN)
0.5
A
5
8
0.3 ± 0.05
UNIT: mm
2.0 ±0.1
0.9 ± 0.1
B
C0
.3
1
4
INDEX
0.05
S
S
0.152TYP
0.6MAX
0.2 ±0.05
■ EXAMPLE OF SOLDER PADS DIMENSIONS
0.5
0.5
0.2
2.4
0.9
1.7
0.05 M
S
AB
Package Information
DFN2020-8-GT
PI-DFN2020-8-GT-E-A
■ PACKING SPEC
UNIT: mm
1.5
*Carrier tape material: PS
*Cover tape material: PE
+0.1
0
4.0 ±0.1
2.2
1.0 ±0.1
0.25 ±0.1
8 .0 ±0.3
4.0 ± 0.1
3 .5 ±0.05
2.0 ± 0.05
2.2
Insert direction
(E4)
1.75 ± 0.1
(1) Taping dimensions / Insert direction
0.75 ±0.1
(2) Taping state
Feed direction
Sealing with covering tape
Trailer part
more than 160mm
Devices
Leader part
3000pcs/reel
more than 400mm
Package Information
DFN2020-8-GT
PI-DFN2020-8-GT-E-A
(3) Reel dimensions
11.4 ±1.0
13 ±0.2
21 ±0.8
Reel material: PS
9
+1.0
-0.3
(4) Peeling strength
Peeling strength of cover tape
・Peeling angle
165 to 180°degrees to the taped surface.
・Peeling speed
300mm/min
・Peeling strength
0.1 to 1.0N
Cover tape
165 to 180 °
Direction to pull
Feed direction
Carrier tape
180 -30
60 +10
2 ±0.5
Package Information
DFN2020-8-GT
PI-DFN2020-8-GT-E-A
(5) Packing state
Prodcut name, Quantity, Lot No, Mark
1 reel
Box size：185×185×20
MAX: 5reel
Box size：185×185×80
Package Surface Temperature(℃)
■ HEAT-RESISTANCE PROFILES
3℃/s MAX.
255℃
260℃
30s MAX.
200℃
6℃/s MAX.
217℃
150℃
60-150s
60-120s
Time(s)
Reflow profile
Datasheet
NC2600 series
Revision History
Date
Version
August 26.2022
1.0
October 18.2022
1.1
February 22.2023
1.2
March 24, 2023
1.3
Ver.1.3
Contents of Changes
Initial release
・Corrected the size thickness of DFN2020-8-GT to 0.6 (mm).
・Added page for marking specification.
・In NC2600GT lineup added.
・In NC2600ZA, the mark specification was corrected (addition of NC2600ZA100B,
correction of mark numbering) and the format was changed.
・In NC2600GT lineup added.
・In NC2600ZA, the mark specification was corrected (addition of NC2600ZA100B,
correction of mark numbering) and the format was changed.
- 41 -
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
The products and the product specifications described in this document are subject to change or discontinuation of production without
notice for reasons such as improvement. Therefore, before deciding to use the products, please refer to our sales representatives for the
latest information thereon.
The materials in this document may not be copied or otherwise reproduced in whole or in part without the prior written consent of us.
This product and any technical information relating thereto are subject to complementary export controls (so-called KNOW controls)
under the Foreign Exchange and Foreign Trade Law, and related politics ministerial ordinance of the law. (Note that the complementary
export controls are inapplicable to any application-specific products, except rockets and pilotless aircraft, that are insusceptible to design
or program changes.) Accordingly, when exporting or carrying abroad this product, follow the Foreign Exchange and Foreign Trade
Control Law and its related regulations with respect to the complementary export controls.
The technical information described in this document shows typical characteristics and example application circuits for the products. The
release of such information is not to be construed as a warranty of or a grant of license under our or any third party's intellectual property
rights or any other rights.
The products listed in this document are intended and designed for use as general electronic components in standard applications (office
equipment, telecommunication equipment, measuring instruments, consumer electronic products, amusement equipment etc.). Those
customers intending to use a product in an application requiring extreme quality and reliability, for example, in a highly specific application
where the failure or misoperation of the product could result in human injury or death should first contact us.
• Aerospace Equipment
• Equipment Used in the Deep Sea
• Power Generator Control Equipment (nuclear, steam, hydraulic, etc.)
• Life Maintenance Medical Equipment
• Fire Alarms / Intruder Detectors
• Vehicle Control Equipment (automotive, airplane, railroad, ship, etc.)
• Various Safety Devices
• Traffic control system
• Combustion equipment
In case your company desires to use this product for any applications other than general electronic equipment mentioned above, make
sure to contact our company in advance. Note that the important requirements mentioned in this section are not applicable to cases
where operation requirements such as application conditions are confirmed by our company in writing after consultation with your
company.
We are making our continuous effort to improve the quality and reliability of our products, but semiconductor products are likely to fail
with certain probability. In order to prevent any injury to persons or damages to property resulting from such failure, customers should be
careful enough to incorporate safety measures in their design, such as redundancy feature, fire containment feature and fail-safe feature.
We do not assume any liability or responsibility for any loss or damage arising from misuse or inappropriate use of the products.
The products have been designed and tested to function within controlled environmental conditions. Do not use products under conditions
that deviate from methods or applications specified in this datasheet. Failure to employ the products in the proper applications can lead
to deterioration, destruction or failure of the products. We shall not be responsible for any bodily injury, fires or accident, property damage
or any consequential damages resulting from misuse or misapplication of the products.
Quality Warranty
8-1. Quality Warranty Period
In the case of a product purchased through an authorized distributor or directly from us, the warranty period for this product shall be
one (1) year after delivery to your company. For defective products that occurred during this period, we will take the quality warranty
measures described in section 8-2. However, if there is an agreement on the warranty period in the basic transaction agreement,
quality assurance agreement, delivery specifications, etc., it shall be followed.
8-2. Quality Warranty Remedies
When it has been proved defective due to manufacturing factors as a result of defect analysis by us, we will either deliver a substitute
for the defective product or refund the purchase price of the defective product.
Note that such delivery or refund is sole and exclusive remedies to your company for the defective product.
8-3. Remedies after Quality Warranty Period
With respect to any defect of this product found after the quality warranty period, the defect will be analyzed by us. On the basis of
the defect analysis results, the scope and amounts of damage shall be determined by mutual agreement of both parties. Then we
will deal with upper limit in Section 8-2. This provision is not intended to limit any legal rights of your company.
Anti-radiation design is not implemented in the products described in this document.
The X-ray exposure can influence functions and characteristics of the products. Confirm the product functions and characteristics in the
evaluation stage.
WLCSP products should be used in light shielded environments. The light exposure can influence functions and characteristics of the
products under operation or storage.
Warning for handling Gallium and Arsenic (GaAs) products (Applying to GaAs MMIC, Photo Reflector). These products use Gallium (Ga)
and Arsenic (As) which are specified as poisonous chemicals by law. For the prevention of a hazard, do not burn, destroy, or process
chemically to make them as gas or power. When the product is disposed of, please follow the related regulation and do not mix this with
general industrial waste or household waste.
Please contact our sales representatives should you have any questions or comments concerning the products or the technical
information.
Official website
https://www.nisshinbo-microdevices.co.jp/en/
Purchase information
https://www.nisshinbo-microdevices.co.jp/en/buy/
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