DATA SHEET
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LDO Regulator - Low IGND,
CMOS with/without Enable,
Enhanced
DFN6
MN SUFFIX
CASE 506AX
500 mA
NCV8605, NCV8606
PIN CONNECTIONS
The NCV8605/NCV8606 provide in excess of 500 mA of output
current at fixed voltage options or an adjustable output voltage from
5.0 V down to 1.25 V. These devices are designed for space constrained
and portable battery powered applications and offer additional features
such as high PSRR, low noise operation, short circuit and thermal
protection. The devices are designed to be used with low cost ceramic
capacitors and are packaged in the DFN6 3x3.3. NCV8605 is designed
without enable pin, NCV8606 is designed with enable pin.
Vin
1
GND
2
NC
3
Vin
1
GND
2
EN
3
• Output Voltage Options:
•
•
•
•
•
•
Adjustable, 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V, 3.3 V, 5.0 V
Adjustable Output by External Resistors from 5.0 V down to 1.25 V
Current Limit 675 mA
Low IGND (Independent of Load)
$1.5% Output Voltage Tolerance Over All Operating Conditions
(Adjustable)
$2% Output Voltage Tolerance Over All Operating Conditions
(Fixed)
NCV8605 Fixed is Direct Replacement LP8345
Typical Noise Voltage of 50 mVrms without a Bypass Capacitor
Enhanced ESD Ratings: 4 kV Human Body Mode (HBM)
200 V Machine Model (MM)
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
These are Pb−Free Devices
Typical Applications
•
•
•
•
Vin
Cin
5
SENSE/ADJ
4
Vout
GND
6
Vin
5
SENSE/ADJ
4
Vout
NCV8606, DFN6 3x3.3mm
(Top View)
MARKING DIAGRAM
V860x
zzz
AYWWG
G
x
zzz
A
Y
WW
G
= 5 or 6
= ADJ, 150, 180, 250, 280,
300, 330, 500
= Assembly Location
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
Hard Disk Drivers
Notebook Computers
Battery Power Electronics
Portable Instrumentation
Vin
Vin
NCV8605, DFN6 3x3.3mm
(Top View)
Features
•
•
•
•
GND
6
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Vout
Vout
NCV8605
(Fixed)
SENSE
GND
Cout
Figure 1. NCV8605 Typical Application Circuit for Fixed
Version (1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V, 3.3 V, 5.0 V)
© Semiconductor Components Industries, LLC, 2013
May, 2022 − Rev. 3
1
Publication Order Number:
NCV8605/D
NCV8605, NCV8606
Vin
Vout
Vout
Vin
NCV8606
(Fixed)
Cin
EN
Cout
SENSE
GND
Figure 2. NCV8606 Typical Application Circuit for Fixed Version (1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V, 3.3 V, 5.0 V)
Vin
Vout
Vin
Vout
NCV8605
(Adjustable)
Cin
GND
ADJ
R1
Vin
Vout
NCV8606
(Adjustable)
Cin
Cout
EN
GND
ADJ
R2
NCV8605
(Adjustable)
Cin
GND
ADJ
Vin
Driver with
Current Limit
Thermal
Shutdown
+
−
NCV8606
(Adjustable)
EN
Vout
Vout
GND
ADJ
Cout
Figure 6. NCV8606 Typical Application Circuit for
Adjustable Version (Vout = 1.25 V)
Vout
Adjustable
Version Only
Vin
Cin
Cout
Figure 5. NCV8605 Typical Application Circuit for
Adjustable Version (Vout = 1.25 V)
Vin
Cout
Figure 4. NCV8606 Typical Application Circuit for
Adjustable Version (1.25 V < Vout v 5.0 V)
Vout
Vout
Vin
R1
R2
Figure 3. NCV8605 Typical Application Circuit for
Adjustable Version (1.25 V < Vout v 5.0 V)
Vin
Vout
Vin
Vin
Vout
Adjustable
Version Only
SENSE/ADJ
Driver with
Current Limit
Thermal
Shutdown
Vref
+
−
Vref
EN
GND
GND
Fixed Version Only
Fixed Version Only
Figure 7. NCV8605 Simplified Block
Diagram
Figure 8. NCV8606 Simplified Block
Diagram
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SENSE/ADJ
NCV8605, NCV8606
PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
1
Vin
2
GND
3
NC/EN
4
Vout
5
SENSE/ADJ
6
Vin
EPAD
GND
Description
Positive Power Supply Input*
Power Supply Ground
NCV8605: This Pin is Not Connected
NCV8606: This Pin is Enable Input, Active HIGH
Regulated Output Voltage
Output Voltage Sense Input
Fixed Version: Connect Directly to Output Capacitor
Adjustable Version: Connect to Middle Point of External Resistor Divider
Positive Power Supply Input*
Exposed Pad is Connected to Ground
*Pins 1 and 6 must be connected together externally for output current full range operation
ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Voltage Range (Note 1)
Vin
−0.3 to 6.5
V
Chip Enable Voltage Range (NCV8606 only)
VEN
−0.3 to 6.5
V
Output Voltage Range
Vout
−0.3 to 6.5
V
Output Voltage/Sense Input Range, SENSE/ADJ
VADJ
−0.3 to 6.5
V
ESD Capability
Human Body Model
Machine Model
ESD
Maximum Junction Temperature
Storage Temperature Range
4000
200
V
TJ(MAX)
150
°C
TSTG
−65 to 150
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
NOTE: This device series contains ESD Protection and exceeds the following tests:
ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD Machine Model tested per AEC− 150 mA per JEDEC standard: JESD78Q100−003 (EIA/JESD22−A115)
Latchup Current Maximum Rating: v 150 mA per JEDEC standard: JESD78.
1. Minimum Vin = (Vout + VDO) or 1.5 V, whichever is higher.
THERMAL CHARACTERISTICS
Rating
Symbol
Value
Unit
Thermal Resistance, Junction−to−Ambient (Note 2)
RqJA
75
°C/W
Thermal Resistance, Junction−to−Case
RYJC
18
°C/W
2. Soldered on 645
Operating Area.
mm2,
1 oz copper area, FR4. Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe
OPERATING RANGES (Note 3)
Rating
3.
4.
5.
6.
Symbol
Value
Unit
Input Voltage (Note 4)
Vin
1.5 to 6.0
V
Output Current (Notes 5 and 6)
Iout
0 to 675
mA
Junction Temperature
TJ
−40 to 150
°C
Ambient Temperature
TA
−40 to 125
°C
Refer to Electrical Characteristics and Application Information for Safe Operating Area.
Minimum Vin = (Vout + VDO) or 1.5 V, whichever is higher.
Minimum limit valid for fixed versions only. For more details refer to Application Information Section.
Maximum limit for Vout = Vout(nom) − 10%.
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NCV8605, NCV8606
ELECTRICAL CHARACTERISTICS
(Vin = (Vout + 0.5 V) or 1.5 V, whichever is higher, Cin = 1 mF, Cout = 1 mF, for typical values TA = 25°C, for min/max values TA = −40°C to
85°C; unless otherwise noted.) (Notes 9 and 10)
Parameter
Test Conditions
Output voltage (Adjustable Version)
Output voltage (Fixed Versions)
Vin = 1.75 V to 6 V
Iout = 1 mA to 500 mA
1.5 V Vin = (Vout + 0.5 V) to 6 V
1.8 V Iout = 1 mA to 500 mA
2.5 V
2.8 V
3.0 V
3.3 V
5.0 V
Symbol
Min
Typ
Max
Unit
Vout
1.231
(−1.5%)
1.250
1.269
(+1.5%)
V
Vout
1.470
1.764
2.450
2.744
2.940
3.234
4.900
(−2%)
1.5
1.8
2.5
2.8
3.0
3.3
5.0
1.530
1.836
2.550
2.856
3.060
3.366
5.100
(+2%)
V
Line regulation
Vin = (Vout + 0.5 V) to 6 V, Iout = 1 mA
Regline
−
4
10
mV
Load regulation
Iout = 1 mA to 500 mA
Regload
−
10
30
mV
Dropout voltage (Adjustable Version)
VDO = Vin − Vout
Vout = 1.25 V
Iout = 500 mA
−
450
−
−
−
−
−
−
−
−
290
250
200
190
180
170
150
360
300
250
240
230
220
200
Dropout voltage (Fixed Version)
VDO
VDO = Vin − (Vout − 0.1 V)
1.5 V Iout = 500 mA
1.8 V Vout = 0 V to 90% Vout(nom)
2.5 V
2.8 V
3.0 V
3.3 V
5.0 V
VDO
mV
mV
Disable Current (NCV8606 Only) (Note 9)
VEN = 0 V
IDIS
−
0.1
1
mA
Ground Current
Iout = 1 mA to 500 mA
IGND
−
145
180
mA
Current Limit (Note 10)
Vout = Vout(nom) − 10 %
ILIM
675
−
−
mA
Output Short Circuit Current
Vout = 0 V
ISC
700
1000
1350
mA
Enable Input Threshold Voltage
(NCV8606 Only)
Voltage Increasing, Logic High
Voltage Decreasing, Logic Low
Turn−on Time (Note 10)
Vth(EN)
High
Low
Vin = 0 V to (Vout + 0.5 V) or 1.75 V,
1.25 V whichever is higher
1.5 V Vout = 0 V to 90% of Vout(nom)
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
5.0 V
Enable Time (NCV8606 Only) (Note 10)
VEN = From 0 V to Vin
1.25 V
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
5.0 V
ton
tEN
V
0.9
−
−
−
−
0.4
−
−
−
−
−
−
−
−
6
6
7
8
10
12
15
30
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
12
12
13
16
18
19
20
30
−
−
−
−
−
−
−
−
ms
ms
7. Refer to ABSOLUTE MAXIMUM RATINGS and APPLICATION INFORMATION for Safe Operating Area.
8. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at TJ = TA = 25°C. Low
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
9. Refer to application information section.
10. Values based on design and/or characterization.
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NCV8605, NCV8606
ELECTRICAL CHARACTERISTICS (continued)
(Vin = (Vout + 0.5 V) or 1.5 V, whichever is higher, Cin = 1 mF, Cout = 1 mF, for typical values TA = 25°C, for min/max values TA = −40°C to
85°C; unless otherwise noted.) (Notes 9 and 10)
Parameter
Power Supply Ripple Rejection (Note 10)
Output Noise Voltage (Note 10)
Test Conditions
Iout = 500 mA
Vout = 1.25 V
Vin − Vout = 1 V
f = 120 Hz, 0.5 VPP
f = 1 kHz, 0.5 VPP
f = 10 kHz, 0.5 VPP
Symbol
Min
Typ
Max
PSRR
dB
−
−
−
f = 10 Hz to 100 kHz, Vout = 1.25 V
Unit
62
55
40
−
−
−
Vn
−
50
−
mVrms
Thermal Shutdown Temperature (Note 10)
TSD
−
175
−
°C
Thermal Shutdown Hysteresis (Note 10)
TSH
−
10
−
°C
7. Refer to ABSOLUTE MAXIMUM RATINGS and APPLICATION INFORMATION for Safe Operating Area.
8. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at TJ = TA = 25°C. Low
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
9. Refer to application information section.
10. Values based on design and/or characterization.
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NCV8605, NCV8606
1.267
1.264
1.261
2.55
Vout = 1.25 V
Iout = 1 mA
1.258
1.255
Vin = Vout + 0.5 V = 1.75 V
1.252
1.249
1.246
Vin = 6.0 V
1.243
1.240
1.237
1.234
1.231
−40
−20
0
Vout = 2.5 V
Iout = 1 mA
2.54
Vout, OUTPUT VOLTAGE (V)
Vout, OUTPUT VOLTAGE (V)
TYPICAL CHARACTERISTICS
20
40
60
80
100
120
2.53
2.52
2.51
Vin = Vout + 0.5 V = 3.0 V
2.50
2.49
Vin = 6.0 V
2.48
2.47
2.46
2.45
−40
140
−20
TA, AMBIENT TEMPERATURE (°C)
Figure 9. Output Voltage vs. Temperature
(Vout = 1.25 V)
Vin = Vout + 0.5 V = 5.5 V
5.04
5.02
Vin = 6.0 V
5.00
4.98
4.96
4.94
4.92
4.90
−40
−20
0
20
40
60
80
100
120
270
100
120 140
Iout = 500 mA
210
180
Iout = 300 mA
150
120
Iout = 150 mA
90
60
30
0
−40
140
−20
0
20
40
60
80
100
120 140
TA, AMBIENT TEMPERATURE (°C)
Figure 12. Dropout Voltage vs. Temperature
(Vout = 2.5 V)
200
180
Vout = 5.0 V
IGND, GROUND CURRENT (mA)
VDO, DROPOUT VOLTAGE (mV)
80
240
TA, AMBIENT TEMPERATURE (°C)
160
140
Iout = 500 mA
120
100
Iout = 300 mA
80
Iout = 150 mA
60
40
20
0
−40
60
Vout = 2.5 V
Figure 11. Output Voltage vs. Temperature
(Vout = 5.0 V)
180
40
300
Vout = 5.0 V
Iout = 1 mA
VDO, DROPOUT VOLTAGE (mV)
Vout, OUTPUT VOLTAGE (V)
5.06
20
Figure 10. Output Voltage vs. Temperature
(Vout = 2.5 V)
5.10
5.08
0
TA, AMBIENT TEMPERATURE (°C)
−20
0
20
40
60
80
100
120
140
170
160
Vin = Vout + 0.5 V
Iout = 500 mA
150
Vout = 5.0 V
140
130
Vout = 2.5 V
120
110
Vout = 1.25 V
100
90
80
−40
TA, AMBIENT TEMPERATURE (°C)
−20
0
20
40
60
80
100
120
TA, AMBIENT TEMPERATURE (°C)
Figure 13. Dropout Voltage vs. Temperature
(Vout = 5.0 V)
Figure 14. Ground Current vs. Temperature
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140
NCV8605, NCV8606
80
1600
1400
Vout = 1.25 V
70
60
Vin = 6.0 V
1200
PSRR (dB)
ISC, SHORT CIRCUIT CURRENT LIMIT (mA)
TYPICAL CHARACTERISTICS
1000
Vin = 1.75 V
800
50
Iout = 500 mA
30
Vout = 1.25 V
20 Vin = 2.25 V
Cout = 1.0 mF
10 T = 25°C
A
600
400
200
−40
−20
0
20
40
60
80
100
120
0
10
140
100
TA, AMBIENT TEMPERATURE (°C)
70
1400
Vn, NOISE DENSITY (nV/√/HZ)
1600
PSRR (dB)
40
20
10
Vn = 47 mVrms
1200
60
Iout = 500 mA
100
1000
10000
100000
Vin = Vout + 0.5 V = 1.75 V
Cin = Cout = 1.0 mF
Iout = 500 mA
TA = 25°C
1000
Iout = 1mA
Vout = 2.5 V
Vin = 3.5 V
Cout = 1.0 mF
TA = 25°C
0
10
10000
Figure 16. PSRR vs. Frequency (Vout = 1.25 V)
80
50
1000
f, FREQUENCY (Hz)
Figure 15. Short Circuit Current Limit vs.
Temperature (Vout = 1.25 V)
30
Iout = 1mA
40
100000
800
600
400
200
0
10
f, FREQUENCY (Hz)
100
1000
10000
100000
f, FREQUENCY (Hz)
Figure 17. PSRR vs. Frequency (Vout = 2.5 V)
Figure 18. Noise Density vs. Frequency
(Vout = 1.25 V)
Vn, NOISE DENSITY (nV/√/HZ)
2500
Vn = 70 mVrms
2000
Vin = Vout + 0.5 V = 3.0 V
Cin = Cout = 1.0 mF
Iout = 500 mA
TA = 25°C
Vout
200 mV/div
Vin = 3.0 V
Vout = 2.5 V
Cout = 10 mF
trise = tfall = 1 ms
TA = 25°C
1500
1000
Iout
500 mA/div
500
0
10
100
1000
10000
100000
f, FREQUENCY (Hz)
TIME (40 ms/div)
Figure 19. Noise Density vs. Frequency
(Vout = 2.5 V)
Figure 20. Load Transient (Vout = 2.5 V)
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NCV8605, NCV8606
TYPICAL CHARACTERISTICS
Vout
100 mV/div
Vout
1 V/div
4.0 V
Vin
500 mV/div
Vout = 2.5 V
Iout = 0 mA
Cout = 10 mF
Vin = 2.5 V
Iout = 500 mA
Cout = 10 mF
trise = tfall = 1 ms
TA = 25°C
Vin = 3.0 V
trise = 1 ms
TA = 25°C
Vin
1 V/div
3.0 V
TIME (20 ms/div)
TIME (10 ms/div)
Figure 21. Line Transient (Vout = 2.5 V)
Figure 22. Startup Transient (Vout = 2.5 V)
DEFINITIONS
General
Short Circuit Current Limit is output current value
measured with output of the regulator shorted to ground.
All measurements are performed using short pulse low
duty cycle techniques to maintain junction temperature as
close as possible to ambient temperature.
PSRR
Power Supply Rejection Ratio is defined as ratio of output
voltage and input voltage ripple. It is measured in decibels
(dB).
Line Regulation
The change in output voltage for a change in input voltage.
The measurement is made under conditions of low
dissipation or by using pulse techniques such that the
average junction temperature is not significantly affected.
Output Noise Voltage
This is the integrated value of the output noise over a
specified frequency range. Input voltage and output load
current are kept constant during the measurement. Results
are expressed in mVrms or nV / √Hz.
Load Regulation
The change in output voltage for a change in output load
current at a constant temperature.
Turn−on and Turn−off Times
Dropout Voltage
Turn−on Time is time difference measured during
power−up of the device from the moment when input
voltage reaches 90% of its operating value to the moment
when output voltage reaches 90% of its nominal value at
specific output current or resistive load.
Turn−off Time is time difference measured during
power−down of the device from the moment when input
voltage drops to 10% of its operating value to the moment
when output voltage drops to 10% of its nominal value at
specific output current or resistive load.
The input to output differential at which the regulator
output no longer maintains regulation against further
reductions in input voltage. Measured when the output drops
100 mV below its nominal value. The junction temperature,
load current, and minimum input supply requirements affect
the dropout level.
Ground and Disable Currents
Ground Current is the current that flows through the
ground pin when the regulator operates without a load on its
output (IGND). This consists of internal IC operation, bias,
etc. It is actually the difference between the input current
(measured through the LDO input pin) and the output load
current. If the regulator has an input pin that reduces its
internal bias and shuts off the output (enable/disable
function), this term is called the disable current (IDIS).
Enable and Disable Times
Enable Time is time difference measured during
power−up of the device from the moment when enable
voltage reaches 90% of input voltage operating value to the
moment when output voltage reaches 90% of its nominal
value at specific output current or resistive load.
Disable Time is time difference measured during
power−down of the device from the moment when enable
voltage drops to 10% of input voltage operating value to the
Current Limit and Short Circuit Current Limit
Current Limit is value of output current by which output
voltage drops by 10% with respect to its nominal value.
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NCV8605, NCV8606
Thermal Protection
moment when output voltage drops to 10% of its nominal
value at specific output current or resistive load.
Typical output voltage overshoot and undershoot response
when the input voltage is excited with a given slope.
Internal thermal shutdown circuitry is provided to protect
the integrated circuit in the event that the maximum junction
temperature is exceeded. When activated at typically 175°C,
the regulator turns off. This feature is provided to prevent
failures from accidental overheating.
Load Transient Response
Maximum Package Power Dissipation
Line Transient Response
Typical output voltage overshoot and undershoot
response when the output current is excited with a given
slope between no−load and full−load conditions.
The power dissipation level at which the junction
temperature reaches its maximum operating value.
APPLICATIONS INFORMATION
guaranteeing that the clamp circuit is active whenever
leakage current is present.
When the NCV8606 adjustable regulator is disabled, the
overshoot clamp circuit becomes inactive and the pass
transistor leakage will charge any capacitance on Vout. If no
load is present, the output can charge up to within a few
millivolts of Vin. In most applications, the load will present
some impedance to Vout such that the output voltage will be
inherently clamped at a safe level. A minimum load of
10 mA is recommended.
Unlike LP8345, for NCV8605/606 fixed voltage versions
there is no limitation for minimum load current.
The NCV8605/NCV8606 regulator is self−protected with
internal thermal shutdown and internal current limit. Typical
application circuits are shown in Figures 1 to 4.
Input Decoupling (Cin)
A ceramic or tantalum 1.0 mF capacitor is recommended
and should be connected close to the NCV8605/NCV8606
package. Higher capacitance and lower ESR will improve
the overall line transient response.
Output Decoupling (Cout)
The NCV8605/NCV8606 is a stable component and does
not require a minimum Equivalent Series Resistance (ESR)
for the output capacitor. The minimum output decoupling
value is 1.0 mF and can be augmented to fulfill stringent load
transient requirements. The regulator works with ceramic
chip capacitors as well as tantalum devices. Larger values
improve noise rejection and load regulation transient
response. Typical characteristics were measured with
Murata ceramic capacitors. GRM219R71E105K (1 mF,
25 V, X7R, 0805) and GRM21BR71A106K (10 mF, 10 V,
X7R, 0805).
Noise Decoupling
The NCV8605/NCV8606 is a low noise regulator and
needs no external noise reduction capacitor. Unlike other
low noise regulators which require an external capacitor and
have slow startup times, the NCV8605/NCV8606 operates
without a noise reduction capacitor, has a typical 8 ms
turn−on time and achieves a 50 mVrms overall noise level
between 10 Hz and 100 kHz.
Enable Operation (NCV8606 Only)
No−Load Regulation Considerations
The enable pin will turn the regulator on or off. The
threshold limits are covered in the electrical characteristics
table in this data sheet. The turn−on/turn−off transient
voltage being supplied to the enable pin should exceed a
slew rate of 10 mV/ms to ensure correct operation. If the
enable function is not to be used then the pin should be
connected to Vin.
The NCV8605/NCV8606 adjustable regulator will
operate properly under conditions where the only load
current is through the resistor divider that sets the output
voltage. However, in the case where the
NCV8605/NCV8606 is configured to provide a 1.250 V
output, there is no resistor divider. If the part is enabled
under no−load conditions, leakage current through the pass
transistor at junction temperatures above 85°C can approach
several microamps, especially as junction temperature
approaches 150°C. If this leakage current is not directed into
a load, the output voltage will rise up to a level
approximately 20 mV above nominal.
The NCV8605/ NCV8606 contains an overshoot clamp
circuit to improve transient response during a load current
step release. When output voltage exceeds the nominal by
approximately 20 mV, this circuit becomes active and
clamps the output from further voltage increase. Tying the
ENABLE pin to Vin (NCV8606 only) will ensure that the
part is active whenever the supply voltage is present, thus
Output Voltage Adjust
The output voltage can be adjusted from 1 times (Figure
4) to 4 times (Figure 3) the typical 1.250 V regulation
voltage via the use of resistors between the output and the
ADJ input. The output voltage and resistors are chosen using
Equation 1 and Equation 2.
ǒ
V out + 1.250 1 )
R2 ^
Ǔ
R1
R2
9
R 1Ǔ
(eq. 1)
R1
V
out
1.25
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) ǒI ADJ
*1
(eq. 2)
NCV8605, NCV8606
250
Input bias current IADJ is typically less than 150 nA.
Choose R1 arbitrarily to minimize errors due to the bias
current and to minimize noise contribution to the output
voltage. Use Equation 2 to find the required value for R2.
RqJA, (°C/W)
200
Thermal
As power in the NCV8605/NCV8606 increases, it might
become necessary to provide some thermal relief. The
maximum power dissipation supported by the device is
dependent upon board design and layout. Mounting pad
configuration on the PCB, the board material, and the
ambient temperature affect the rate of junction temperature
rise for the part. When the NCV8605/NCV8606 has good
thermal conductivity through the PCB, the junction
temperature will be relatively low with high power
applications.
The
maximum
dissipation
the
NCV8605/NCV8606 can handle is given by:
P D(MAX) +
ƪTJ(MAX) * TAƫ
FR4 = 2.0 oz
0
I out ) I GND
400
600
800
Hints
(eq. 3)
I outǓ
200
Figure 23. Thermal Resistance vs. Copper Area
Vin and GND printed circuit board traces should be as
wide as possible. When the impedance of these traces is
high, there is a chance to pick up noise or cause the regulator
to malfunction. Place external components, especially the
output capacitor, as close as possible to the
NCV8605/NCV8606, and make traces as short as possible.
(eq. 4)
or
P D(MAX) ) ǒV out
0
COPPER AREA (mm2)
Since TJ is not recommended to exceed 125°C (TJ(MAX)),
then the NCV8605/NCV8606 soldered on 645 mm2, 1 oz
copper area, FR4 can dissipate up to 1.3 W when the ambient
temperature (TA) is 25°C. See Figure 23 for RqJA versus
PCB area.
The power dissipated by the NCV8605/NCV8606 can be
calculated from the following equations:
V in(MAX) [
FR4 = 1.0 oz
100
50
R QJA
P D [ V inǒI GND@I OUTǓ ) I outǒV in * V outǓ
150
(eq. 5)
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10
NCV8605, NCV8606
ORDERING INFORMATION
Device*
Nominal Output Voltage (V)
NCV8605MNADJT2G
Marking
Package
Shipping†
ADJ
V8605
ADJ
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8605MN15T2G
1.5
V8605
150
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8605MN18T2G
1.8
V8605
180
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8605MN25T2G
2.5
V8605
250
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8605MN28T2G
2.8
V8605
280
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8605MN30T2G
3.0
V8605
300
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8605MN33T2G
3.3
V8605
330
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8605MN50T2G
5.0
V8605
500
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MNADJT2G
ADJ
V8606
ADJ
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MN15T2G
1.5
V8606
150
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MN18T2G
1.8
V8606
180
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MN25T2G
2.5
V8606
250
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MN28T2G
2.8
V8606
280
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MN30T2G
3.0
V8606
300
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MN33T2G
3.3
V8606
330
DFN6
(Pb−Free)
3000 / Tape & Reel
NCV8606MN50T2G
5.0
V8606
500
DFN6
(Pb−Free)
3000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP
Capable
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11
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
DFN6 3.0x3.3, 0.95P
CASE 506AX
ISSUE A
DATE 22 SEP 2020
GENERIC
MARKING DIAGRAM*
XXXXX
XXXXX
AYWWG
G
DOCUMENT NUMBER:
DESCRIPTION:
XXXX = Specific Device Code
A
= Assembly Location
Y
= Year
WW = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
98AON21930D
DFN6 3.0X3.3, 0.95P
*This information is generic. Please refer to
device data sheet for actual part marking.
Pb−Free indicator, “G” or microdot “G”, may
or may not be present. Some products may
not follow the Generic Marking.
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
PAGE 1 OF 1
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