NCP690, NCP691, NCP692,
NCV8690
1 A, IGND, Very Low Dropout
Voltage Regulator (VLDO),
with/without Enable
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The NCP690, NCP691, NCP692, NCV8690 CMOS LDO family
provides 1 A of output current with enhanced ESD in either fixed
voltage options or an adjustable output voltage from 5.0 V down to
1.25 V. This device is designed for space constrained and portable
battery powered applications and offer additional features such as high
PSRR, low Quiescent and Ground current consumption, low noise
operation, short circuit and thermal protection. The device is designed
to be used with low cost ceramic capacitors and is packaged in the 6
−Lead DFN3x3 package.
DFN6 3x3
MN SUFFIX
CASE 506AH
1
MARKING DIAGRAM
1 xxxxzz
AYWW
G
Features
• Output Voltage Options: Adjustable, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V
EN
GND
IN
OUT
IN
EN
IN
GND
NCP691, NCP692 −
DFN6
Fixed Version
(Bottom View)
N/C
GND
1
SNS
OUT
SNS
GND
NCP690, NCV8690 −
DFN6
Fixed Version
(Bottom View)
IN
1
ADJ
GND
IN
IN
GND
OUT
Laptops and PCI Cards
Modem Banks and Telecom Boards
DSP, FPGA, Microprocessor Boards
Portable, Battery−Power Applications
Hard Disk Drives
N/C
1
GND
Applications
•
•
•
•
•
GND
1
ADJ
•
= 690, 691, 692, V690
= 15, 18, 25, 33, 50, AD
= Assembly Location
= Year
= Work Week
= Pb−Free Package
PIN ASSIGNMENT
OUT
•
•
•
•
•
•
•
xxx
zz
A
Y
WW
G
IN
•
Pb−Free
IN
•
•
•
– Other Options Possible
Adjustable Output by External Resistors from 5.0 V down to 1.25 V
Guaranteed 1 A Output Current
±1.5% Output Voltage Tolerance over All Operating Conditions
(Adjustable)
±2% Output Voltage Tolerance over All Operating Conditions
(Fixed)
Typical Noise Voltage of 50 mVrms without a Bypass Capacitor
Typical Dropout Voltage of 190 mV at 1 A (Vout = 2.5 V, TJ = 25°C)
Active Output Discharge
Active Low Enable Pin (NCP691 Device)
Active High Enable Pin (NCP692 device)
Enhanced ESD: 4 kV and 200 V
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
NCP690, NCV8690 −
DFN6
NCP691, NCP692 −
DFN6
Adjustable Version
(Bottom View)
Adjustable Version
(Bottom View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
October, 2019 − Rev. 10
1
Publication Order Number:
NCP690/D
NCP690, NCP691, NCP692, NCV8690
VIN
1,6
IN
3
EN*
NCP692
GND
CIN
1 mF**
OUT
SNS
VOUT
4
5
COUT
1 mF**
2, EPAD
Note: * NCP692 device has EN active high
Note: ** Minimum value required for stability
Figure 1. NCP692 Typical Application Circuit for Fixed Version
(Output voltage versions: 1.5 V, 1.8 V, 2.5 V, 5.0 V)
VIN
1,6
3
IN
EN*
CIN
1 mF**
NCP691
GND
OUT
SNS
VOUT
4
5
COUT
1 mF**
2, EPAD
Note: * NCP691 device has EN active low
Note: ** Minimum value required for stability
Figure 2. NCP691 Typical Application Circuit for Fixed Version
(Output voltage versions: 1.5 V, 1.8 V, 2.5 V, 5.0 V)
VIN
1,6
3
CIN
1 mF*
IN
N/C
NCP690
NCV8690
GND
OUT
SNS
VOUT
4
5
COUT
1 mF*
2, EPAD
Note: * Minimum value required for stability
Figure 3. NCP690, NCV8690 Typical Application Circuit for Fixed Version
(Output voltage versions: 1.5 V, 1.8 V, 2.5 V, 5.0 V)
VIN 3.3 V
VEN
CIN
1 mF**
VOUT 2.5 V
1,6
5
OUT
IN
NCP691−ADJ/
NCP692−ADJ
3
4
EN*
ADJ
GND
2, EPAD
R1
9.1 k
R2
9.1 k
COUT
1 mF**
Note: * NCP691−ADJ device has EN active low and
Note: * NCP692−ADJ device has EN active high
Note: ** Minimum value required for stability
Figure 4. NCP692 Typical Application Circuit for Adjustable Version
(Adjustable version for 1.25 V < VOUT ≤ 5.0 V)
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2
NCP690, NCP691, NCP692, NCV8690
OUT
IN
R2
SNS
MOSFET
DRIVER WITH
CURRENT LIMIT
THERMAL
SHUTDOWN
N/C
R1
ENABLE
LOGIC
BANDGAP
REFERENCE
ACTIVE
DISCHARGE
GND
Figure 5. NCP690, NCV8690 Block Diagram (Fixed Version)
IN
OUT
R2
SNS
MOSFET
DRIVER WITH
CURRENT LIMIT
R1
THERMAL
SHUTDOWN
EN
BANDGAP
REFERENCE
ENABLE
LOGIC
ACTIVE
DISCHARGE
GND
Figure 6. NCP691 Block Diagram (Fixed Version)
IN
OUT
R2
SNS
MOSFET
DRIVER WITH
CURRENT LIMIT
R1
THERMAL
SHUTDOWN
EN
BANDGAP
REFERENCE
ENABLE
LOGIC
ACTIVE
DISCHARGE
GND
Figure 7. NCP692 Block Diagram (Fixed Version)
Table 1. PIN FUNCTION DESCRIPTION FOR FIXED VERSION
Pin No.
Pin Name
Description
1, 6
IN
2
GND
Power supply ground of the regulator. Connected to the die through the lead frame. Soldered to the
copper plane allows for effective heat removal.
3
EN
For NCP691 and NCP692 this pin functions as Enable Active Low and Enable Active High respectively. For NCP690/NCV8690 this pin has no special meaning and should be left disconnected.
4
OUT
Regulated output voltage
5
SNS
Sense input. This pin should be connected directly to OUT pin.
Voltage inputs which supplies the current to the regulator. Both of these pins should be connected
together for full output current capability
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3
NCP690, NCP691, NCP692, NCV8690
IN
OUT
ADJ
MOSFET
DRIVER WITH
CURRENT LIMIT
THERMAL
SHUTDOWN
N/C
ENABLE
LOGIC
BANDGAP
REFERENCE
ACTIVE
DISCHARGE
GND
Figure 8. NCP690, NCV8690 Block Diagram (Adjustable Version)
IN
OUT
ADJ
MOSFET
DRIVER WITH
CURRENT LIMIT
THERMAL
SHUTDOWN
EN
BANDGAP
REFERENCE
ENABLE
LOGIC
ACTIVE
DISCHARGE
GND
Figure 9. NCP691 Block Diagram (Adjustable Version)
IN
OUT
ADJ
MOSFET
DRIVER WITH
CURRENT LIMIT
THERMAL
SHUTDOWN
EN
BANDGAP
REFERENCE
ENABLE
LOGIC
ACTIVE
DISCHARGE
GND
Figure 10. NCP692 Block Diagram (Adjustable Version)
Table 2. PIN FUNCTION DESCRIPTION FOR ADJUSTABLE VERSION
Pin No.
Pin Name
Description
1, 6
IN
2
GND
Power supply ground of the regulator. Connected to the die through the lead frame. Soldered to the
copper plane allows for effective heat removal.
3
EN
For NCP691 and NCP692 this pin functions as Enable Active Low and Enable Active High respectively. For NCP690/NCV8690 this pin has no special meaning and should be left disconnected.
4
ADJ
Feedback input. Connect to middle point of resistor divider for Adjustable version.
5
OUT
Regulated output voltage
Voltage inputs which supplies the current to the regulator. Both of these pins should be connected
together for full output current capability
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NCP690, NCP691, NCP692, NCV8690
Table 3. ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Voltage (Note 1)
VIN
−0.3 to 6.5
V
Chip Enable Voltage
VEN
−0.3 to 6.5
V
Output Voltage
VOUT
−0.3 to 6.5
V
VSNS
−0.3 to 6.5
V
ESD
4000
V
Output Voltage / Sense Input, (SNS pin)
Electrostatic Discharge
Human Body Model
Machine Model
200
Maximum Junction Temperature
Storage Temperature Range
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 HBM tested per JEDEC standard: JESD22−A114
ESD MM tested per JEDEC standard: JESD22−A115
Latch–up Current Maximum Rating: ≤ 150 mA per JEDEC standard: JESD78
Table 4. PACKAGE THERMAL CHARACTERISTICS
Rating
Thermal Resistance,
Junction−to−Ambient (Note 2)
Condition
Symbol
Value
Unit
DFN6 3x3, 1 oz Cu
64 mm2 Cu
645 mm2 Cu
RqJA
169
70
°C/W
DFN6 3x3, 2 oz Cu
64 mm2 Cu
645 mm2 Cu
RqJA
151
62
°C/W
RqJL
15
°C/W
Thermal Resistance, Junction−to−Pin
Table 5. OPERATING RANGES
Rating
Symbol
Value
Unit
Operating Input Voltage (Notes 3 and 4)
VIN
1.5 to 6.0
V
Operating Junction Temperature Range
TJ
−40 to 125
°C
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
1. Minimum VIN = (VOUT + VDO) or 1.5 V, whichever is higher.
2. Soldered on FR4 copper area, please refer to Applications Section for Safe Operating Area.
3. Minimum VIN = (VOUT + VDO) or 1.5 V, whichever is higher.
4. Refer to Electrical Characteristics and Application Information for Safe Operating Area.
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NCP690, NCP691, NCP692, NCV8690
Table 6. ELECTRICAL CHARACTERISTICS VIN = (VOUT + 1 V), VEN = VIN, IOUT = 1 mA, CIN = 10 mF, COUT = 10 mF, for typical
values TJ = 25°C, for Min/Max values TJ = −40°C to 125°C; unless otherwise noted. (Note 5)
Test Conditions
Parameter
Output voltage
(Adjustable Version)
VIN = 1.75 V to 6.0 V
IOUT = 100 mA to 1 A
Output voltage (Fixed Version)
VIN = (VOUT + 1 V) to 6.0 V
IOUT = 100 mA to 1 A
Line regulation
VIN = (VOUT + 1 V) to 6.0 V
Symbol
Min
Typ
Max
Unit
VOUT
1.231
(−1.5%)
1.250
1.269
(+1.5%)
V
VOUT = 1.5 V
VOUT = 1.8 V
VOUT = 2.5 V
VOUT = 3.3 V
VOUT = 5.0 V
VOUT
1.470
1.764
2.450
3.234
4.900
(−2%)
1.5
1.8
2.5
3.3
5.0
1.530
1.836
2.550
3.366
5.100
(+2%)
V
RegLINE
−
3.2
8
mV
VOUT = 1.5 V
VOUT = 1.8 V
VOUT = 2.5 V
VOUT = 3.3 V
VOUT = 5.0 V
RegLOAD
−
−
−
−
−
10
10
10
10
10
30
30
35
35
40
mV
VDO
−
450
470
mV
Load regulation
IOUT = 100 mA to 1 A
Dropout voltage
(Adjustable Version, Note 6)
VDO = VIN − VOUT
VOUT = 1.25 V
IOUT = 1 A
Dropout voltage
(Fixed Version, Note 9)
IOUT = 1 A
VOUT = 1.5 V
VOUT = 1.8 V
VOUT = 2.5 V
VOUT = 3.3 V
VOUT = 5.0 V
VDO
−
−
−
−
−
290
240
190
180
120
410
380
300
250
210
mV
Ground current
VIN = VOUT + 1 V,
VOUT = 1.5 V, 1.8 V,
2.5 V, 3.3 V
IOUT = 1 A
IOUT = 10 mA
IOUT = 100 mA
IGND
−
−
−
145
145
145
200
200
200
mA
VIN = VOUT + 1 V,
VOUT = 5.0 V
IOUT = 1 A
IOUT = 10 mA
IOUT = 100 mA
−
−
−
145
145
145
240
240
240
mA
Disable current (NCP692 only,
Notes 5 and 7)
VEN < 0.4 V
IDIS
−
0.1
1
mA
Output Current Limit
VIN = VOUT + 1 V, VOUT = 85% VOUT_NOM
ILIM
1.1
1.6
2.4
A
Short Circuit Current
VOUT = 0 V
Enable High Level Threshold
Enable Low Level Threshold
(NCP691 and NCP692)
VEN increasing from low to high logic level
VEN decreasing from high to low logic level
Enable Input Current
(Enable Active Low)
(NCP691 only, Note 8)
ISC
1.2
−
−
A
VEN_ HI
VEN_ LO
0.9
−
−
−
−
0.4
V
VEN = 0.9 V to VIN
IEN_HI
−
0.01
250
nA
Enable Input Current
(NCP692 only, Note 8)
VEN = 0 V
IEN_LO
−
0.01
100
nA
Feedback Current
VFB = 1.25 (Adjustable version only)
IIFB
−
210
320
nA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
5. 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.
6. Maximum dropout voltage is limited by minimum input voltage. VIN = 1.7 V recommended for guaranteed operation at maximum output
current.
7. Refer to the Applications Information Section.
8. Values based on design and/or characterization.
9. Dropout voltage is defined as the differential voltage between VOUT and VIN, when VOUT drops 100 mV below its nominal value.
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NCP690, NCP691, NCP692, NCV8690
Table 6. ELECTRICAL CHARACTERISTICS VIN = (VOUT + 1 V), VEN = VIN, IOUT = 1 mA, CIN = 10 mF, COUT = 10 mF, for typical
values TJ = 25°C, for Min/Max values TJ = −40°C to 125°C; unless otherwise noted. (Note 5) (continued)
Parameter
Test Conditions
Symbol
Min
Typ
Max
Unit
tON
−
50
−
ms
PSRR
−
−
−
62
55
40
−
−
−
dB
VN
−
50
−
mVrms
Thermal Shutdown Temperature
(Note 8)
TSD
−
175
−
°C
Thermal Shutdown Hysteresis
(Note 8)
TSH
−
10
−
°C
Turn−on Time (Note 8)
VIN = 0 V to (VOUT +1 V) or 1.75 V
VOUT = 0 V to 90% VOUT_NOM
Power supply ripple rejection
(Note 8)
VOUT = 1.25 V
VIN = VOUT + 1 V, with
VPP = 0.5 V, COUT = 1 mF
Output noise voltage (Note 8)
BW = 200 Hz to 100 kHz, CIN = 1 mF,
COUT = 10 mF, TA = 25°C
f = 120 Hz
f = 1 kHz
f = 10 kHz
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
5. 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.
6. Maximum dropout voltage is limited by minimum input voltage. VIN = 1.7 V recommended for guaranteed operation at maximum output
current.
7. Refer to the Applications Information Section.
8. Values based on design and/or characterization.
9. Dropout voltage is defined as the differential voltage between VOUT and VIN, when VOUT drops 100 mV below its nominal value.
TYPICAL CHARACTERISTICS
1.27
1.55
VIN = VOUT_NOM + 1 V = 1.75 V,
CIN = COUT = 10 mF
VOUT, OUTPUT VOLTAGE (V)
VOUT, OUTPUT VOLTAGE (V)
1.28
1.26
IOUT = 100 mA
1.25
1.24
IOUT = 1 A
1.23
1.22
−40
−15
10
35
60
85
110
1.54
1.52
1.51
IOUT = 100 mA
1.50
IOUT = 1 A
1.49
1.48
1.47
1.46
−40
135
VIN = VOUT_NOM + 1 V = 2.5 V,
CIN = COUT = 10 mF
1.53
−15
10
35
60
85
110
TA, AMBIENT TEMPERATURE (°C)
TA, AMBIENT TEMPERATURE (°C)
Figure 11. Output Voltage vs. Temperature
(Vout = 1.25 V)
Figure 12. Output Voltage vs. Temperature
(Vout = 1.5 V)
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135
NCP690, NCP691, NCP692, NCV8690
3.35
2.54
VIN = VOUT_NOM + 1 V = 3.5 V,
CIN = COUT = 10 mF
2.53
VOUT, OUTPUT VOLTAGE (V)
VOUT, OUTPUT VOLTAGE (V)
2.55
2.52
IOUT = 100 mA
2.51
2.50
IOUT = 1 A
2.49
2.48
2.47
2.46
−40
−15
10
35
60
85
110
3.33
3.31
IOUT = 100 mA
3.29
IOUT = 1 A
3.27
3.25
−40
135
VIN = VOUT_NOM + 1 V = 4.3 V,
CIN = COUT = 10 mF
−15
10
35
60
85
110
TA, AMBIENT TEMPERATURE (°C)
TA, AMBIENT TEMPERATURE (°C)
Figure 13. Output Voltage vs. Temperature
(Vout = 2.5 V)
Figure 14. Output Voltage vs. Temperature
(Vout = 3.3 V)
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135
NCP690, NCP691, NCP692, NCV8690
TYPICAL CHARACTERISTICS
500
5.04
VDO, DROPOUT VOLTAGE (mV)
VOUT, OUTPUT VOLTAGE (V)
5.05
VIN = VOUT_NOM + 1 V = 6.0 V,
CIN = COUT = 10 mF
5.03
5.02
5.01
IOUT = 100 mA
5.00
4.99
4.98
IOUT = 1 A
4.97
4.96
−40
−15
10
35
60
85
110
350
300
VOUT = 2.5 V
250
200
VOUT = 3.3 V
150
VOUT = 5.0 V
−15
10
35
60
110
TA, AMBIENT TEMPERATURE (°C)
Figure 15. Output Voltage vs. Temperature
(Vout = 5.0 V)
Figure 16. Dropout Voltage vs. Temperature
(Vout = 1.25 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V)
VOUT = 5.0 V
IOUT = 1.0 A,
VIN = VOUT + 1 V
240
85
TA, AMBIENT TEMPERATURE (°C)
IGND, GROUND CURRENT (mA)
IGND, GROUND CURRENT (mA)
VOUT = 1.5 V
VOUT = 1.8 V
270
210
3.3 V
180
150
2.5 V
120
1.5 V
90
−40
1.25 V
−15
10
35
60
85
110
135
VOUT = 5.0 V
IOUT = 100 mA,
VIN = VOUT + 1 V
240
210
3.3 V
180
150
2.5 V
120
1.5 V
1.25 V
90
60
−40
135
−15
10
35
60
85
110
TA, AMBIENT TEMPERATURE (°C)
TA, AMBIENT TEMPERATURE (°C)
Figure 17. Ground Current vs. Temperature
(Vout = 1.25 V, 1.5 V, 2.5 V, 3.3 V, 5.0 V)
Figure 18. Ground Current vs. Temperature
(Vout = 1.25 V, 1.5 V, 2.5 V, 3.3 V, 5.0 V)
1.4
135
3.0
VIN = 2.5 V,
VOUT = 1.5 V,
CIN = COUT = 1 mF,
IOUT = 10 mA,
TA = 25°C
1.2
VN = 19 mVRMS
1.0
0.8
VN, NOISE DENSITY (mVrms/rtHz)
VN, NOISE DENSITY (mVrms/rtHz)
VOUT = 1.25 V
400
100
−40
135
270
0.6
0.4
0.2
0
IOUT = 1.0 A,
CIN = COUT = 10 mF
450
10
100
1000
10,000
100,000
VIN = 3.5 V,
VOUT = 2.5 V,
CIN = COUT = 1 mF,
IOUT = 10 mA,
TA = 25°C
2.5
VN = 35 mVRMS
2.0
1.5
1.0
0.5
0
10
100
1000
10,000
100,000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 19. Noise Density vs. Frequency
(Vout = 1.5 V)
Figure 20. Noise Density vs. Frequency
(Vout = 2.5 V)
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NCP690, NCP691, NCP692, NCV8690
TYPICAL CHARACTERISTICS
2.0
VOUT, OUTPUT VOLTAGE (V)
VIN = 6.0 V,
VOUT = 5.0 V,
CIN = COUT = 1 mF,
IOUT = 10 mA,
TA = 25°C
2.5
1.75
VIN = 3.5 V,
CIN = COUT = 10 mF,
DIOUT/Dt = 0.5 A/1 ms
1.50
VOUT
1.0
1.25
1.5
1.0
0.5
10
1000
10,000
0.5
0
100,000
FREQUENCY (Hz)
TIME (100 ms/DIV)
Figure 21. Noise Density vs. Frequency
(Vout = 5.0 V)
Figure 22. Load Transient
(Vout = 1.5 V)
2.5
VOUT
2.3
IOUT
1.0
0.5
VIN = 6.0 V,
CIN = COUT = 10 mF,
DIOUT/Dt = 0.5 A/1 ms
5.25
5.00
VOUT
4.75
IOUT
1.0
0.5
0
CIN = COUT = 10 mF,
trise = 10 ms
4
VIN
3
VOUT
1.45
VOUT, OUTPUT VOLTAGE (V)
1.50
TIME (50 ms/DIV)
Figure 24. Load Transient
(Vout = 5.0 V)
5
VIN
2.55
VOUT
2.50
2.45
CIN = COUT = 10 mF,
trise = 10 ms
TIME (50 ms/DIV)
TIME (50 ms/DIV)
Figure 25. Line Transient
(Vout = 1.5 V)
Figure 26. Line Transient
(Vout = 2.5 V)
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4
VIN, INPUT VOLTAGE (V)
1.55
TIME (50 ms/DIV)
Figure 23. Load Transient
(Vout = 2.5 V)
VIN, INPUT VOLTAGE (V)
VOUT, OUTPUT VOLTAGE (V)
0
IOUT, OUTPUT CURRENT (A)
VIN = 3.5 V,
CIN = COUT = 10 mF,
DIOUT/Dt = 0.5 A/1 ms
IOUT, OUTPUT CURRENT (A)
2.7
100
IOUT
VOUT, OUTPUT VOLTAGE (V)
0
VOUT, OUTPUT VOLTAGE (V)
VN = 64 mVRMS
3.0
IOUT, OUTPUT CURRENT (A)
VN, NOISE DENSITY (mVrms/rtHz)
3.5
NCP690, NCP691, NCP692, NCV8690
5
5.05
VOUT
5.00
CIN = COUT = 10 mF,
trise = 10 ms
2.0
VOUT
1.5
1.0
VIN = 2.5 V,
CIN = COUT = 10 mF,
IOUT = 1 A,
trise_EN = 10 ms
0.5
TIME (50 ms/DIV)
TIME (50 ms/DIV)
Figure 27. Line Transient
(Vout = 5.0 V)
Figure 28. Start−Up Transient
(Vout = 1.5 V)
VEN
VEN
6
3.0
2.5
2.0
0
VOUT
1.5
VIN = 3.5 V,
CIN = COUT = 10 mF,
IOUT = 1 A,
trise_EN = 10 ms
1.0
0.5
0
VEN, VOUT VOLTAGE (V)
4.95
VEN
2.5
VEN, VOUT VOLTAGE (V)
VIN
3.5
5
VOUT
4
3
2
VIN = 6.0 V,
CIN = COUT = 10 mF,
IOUT = 1 A,
trise_EN = 10 ms
1
0
TIME (50 ms/DIV)
TIME (50 ms/DIV)
Figure 29. Start−Up Transient
(Vout = 2.5 V)
Figure 30. Start−Up Transient
(Vout = 5.0 V)
70
60
50
PSRR (dB)
VEN, VOUT VOLTAGE (V)
6
VIN, INPUT VOLTAGE (V)
VOUT, OUTPUT VOLTAGE (V)
TYPICAL CHARACTERISTICS
40
VIN = 2.5 V,
VOUT = 1.5 V,
VPP = 0.5 V,
COUT = 1 mF
30
20
10
0
10
100
1000
10,000
FREQUENCY (Hz)
Figure 31. PSRR vs. Frequency
(Vout = 1.5 V)
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11
100,000
NCP690, NCP691, NCP692, NCV8690
DEFINITIONS
Load Regulation
Line Regulation
The change in output voltage for a change in output load
current at a constant temperature.
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.
Dropout Voltage
The input/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.
Line Transient Response
Typical output voltage overshoot and undershoot
response when the input voltage is excited with a given
slope.
Load 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.
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.
Thermal Protection
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.
Ground Current
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.)
Maximum Package Power Dissipation
The power dissipation level at which the junction
temperature reaches its maximum operating value.
APPLICATIONS INFORMATION
approximately 20 mV, this circuit becomes active and
clamps the output from further voltage increase. Tying the
ENABLE pin to VIN will ensure that the part is active
whenever the supply voltage is present,
The NCP690 regulator is self−protected with internal
thermal shutdown and internal current limit. Typical
application circuit is shown in Figure 1.
Input Decoupling (CIN)
A ceramic 10 mF capacitor is recommended and should be
connected close to the NCP690 package. Higher
capacitance and lower ESR will improve the overall line
transient response.
Noise Decoupling
The NCP690 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 NCP690 operates without a noise
reduction capacitor, has a typical 50 ms turn−on time and
achieves a 50 mVrms overall noise level between 10 Hz and
100 kHz.
Output Decoupling (COUT)
The NCP690 does not require a minimum Equivalent
Series Resistance (ESR) for the output capacitor. The
minimum output decoupling capacitor required for stability
is 1 mF. In order to improve the load transient response and
start up performance 10 mF capacitor is recommended. The
regulator is stable with ceramic chip as well as tantalum
capacitors. Larger values improve noise rejection and load
transient response.
Enable Operation
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.
No−Load Regulation Considerations
The required minimum 100 mA load current is assured by
the internal resistor divider network.
The NCP690 contain an overshoot clamp circuit to
improve transient response during a load current step
release. When output voltage exceeds the nominal by
Adjustable Operation
The output voltage can be adjusted from 1 to 4 times the
typical 1.250 V regulation voltage by the use of resistor
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12
NCP690, NCP691, NCP692, NCV8690
The power dissipated by the NCP690 can be calculated
from the following equations:
divider network as shown on Figure 4. The output voltage
and resistors should be chosen using Equations 1 and 2.
ǒ
V OUT + 1.250 1 )
R2 ^ R1
Ǔ
R1
) (I ADJ @ R 1)
R2
1
P D [ V IN(I GND@I OUT) ) I OUT(V IN * V OUT)
(eq. 1)
or
(eq. 2)
VOUT
*1
1.25
V IN(MAX) [
Input bias current IADJ is typically less than 210 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. If
an output voltage of 1.25 V is desired, the adjustable pin
should be connected directly to the output pin.
R qJA
I OUT)
I OUT ) I GND
(eq. 5)
RqJA (°C/W)
200
150
As power dissipated in the NCP690 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 NCP690 has good thermal
conductivity through the PCB, the junction temperature will
be relatively low with high power applications. The
maximum dissipation the NCP690 can handle is given by:
P D(MAX) +
P D(MAX) ) (V OUT
250
Thermal Characteristics
[T J(MAX) * T A]
(eq. 4)
FR4 − 1.0 oz
100
FR4 − 2.0 oz
50
0
0
200
400
COPPER AREA (mm2)
600
800
Figure 32. Thermal Resistance vs. Copper Area
Hints
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 NCP690, and
make traces as short as possible.
(eq. 3)
Since TJ is not recommended to exceed 125°C (TJ(MAX)),
then the NCP690 can dissipate up to 1 W when the ambient
temperature (TA) is 25°C.
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13
NCP690, NCP691, NCP692, NCV8690
DEVICE ORDERING INFORMATION
Nominal
Output Voltage
Marking
Package
Shipping†
NCP690MN15T2G
1.5 V
69015
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP690MN18T2G
1.8 V
69018
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP690MN25T2G
2.5 V
69025
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP690MN33T2G
3.3 V
69033
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP690MN50T2G
5.0 V
69050
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP690MNADJT2G
ADJ
690AD
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP691MN15T2G
1.5 V
69115
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP691MN18T2G
1.8 V
69118
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP691MN25T2G
2.5 V
69125
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP691MN33T2G
3.3 V
69133
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP691MN50T2G
5.0 V
69150
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP691MNADJT2G
ADJ
691AD
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP692MN15T2G
1.5 V
69215
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP692MN18T2G
1.8 V
69218
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP692MN25T2G
2.5 V
69225
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP692MN33T2G
3.3 V
69233
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP692MN50T2G
5.0 V
69250
DFN6
(Pb-Free)
3000 / Tape & Reel
NCP692MNADJT2G
ADJ
692AD
DFN6
(Pb-Free)
3000 / Tape & Reel
NCV8690MN33T2G*
3.3 V
V69033
DFN6
(Pb-Free)
3000 / Tape & Reel
Device
†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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14
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
DFN6 3*3 MM, 0.95 PITCH
CASE 506AH−01
ISSUE O
1
SCALE 2:1
PIN 1
REFERENCE
2X
0.15 C
2X
0.15 C
NOTES:
1. DIMENSIONS AND TOLERANCING PER ASME
Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMESNION b APPLIES TO PLATED TERMINAL
AND IS MEASURED BETWEEN 0.25 AND 0.30
MM FROM TERMINAL.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
A
D
B
ÇÇÇ
ÇÇÇ
ÇÇÇ
E
DIM
A
A1
A3
b
D
D2
E
E2
e
K
L
TOP VIEW
0.10 C
A
6X
0.08 C
(A3)
SIDE VIEW
6X
C
A1
SEATING
PLANE
e
4X
3
1
E2
K
MILLIMETERS
MIN
NOM MAX
0.80
0.90
1.00
0.00
0.03
0.05
0.20 REF
0.35
0.40
0.45
3.00 BSC
2.40
2.50
2.60
3.00 BSC
1.50
1.60
1.70
0.95 BSC
0.21
−−−
−−−
0.30
0.40
0.50
GENERIC
MARKING DIAGRAM*
D2
L
1
6X
DATE 17 NOV 2004
xxxxx
xxxxx
AYWW
Standard
6
4
6X
b
xxxxx
A
Y
WW
G
(NOTE 3)
0.10 C A B
BOTTOM VIEW
0.05 C
SOLDERING FOOTPRINT*
0.450
0.0177
0.63
0.025
1.700
0.685
DOCUMENT NUMBER:
DESCRIPTION:
2.60
0.1023
SCALE 10:1
98AON19891D
xxxxx
AYWW
G
Pb−Free
= Specific Device Code
= Assembly Location
= Year
= Work Week
= Pb−Free Package
*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.
0.950
0.0374
3.31
0.130
1
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
mm Ǔ
ǒinches
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
DFN6 3*3 MM, 0.95 PITCH, SINGLE FLAG
PAGE 1 OF 1
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