NCP4680DMX10TCG [ONSEMI]
150 mA, Low Noise Low Dropout Regulator; 150毫安，低噪声低压降稳压器
| 型号： | NCP4680DMX10TCG |
| 厂家： | 
ONSEMI |
| 描述： | 150 mA, Low Noise Low Dropout Regulator |
| 文件： | 总20页 (文件大小：392K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCP4680
150 mA, Low Noise Low
Dropout Regulator
The NCP4680 is a CMOS linear voltage regulator with 150 mA
output current capability. The device is available in a tiny 0.8x0.8 mm
XDFN, and has high output voltage accuracy, low supply current and
high ripple rejection. The NCP4680 is easy to use and includes output
current fold−back protection. A Chip Enable function is included to
save power by lowering supply current. The line and load transient
responses are very good, making this regulator ideal for use as a power
supply for communication equipment.
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MARKING
DIAGRAMS
XXX
XMM
Features
SC−70
• Operating Input Voltage Range: 1.40 V to 5.25 V
• Output Voltage Range: 0.8 V to 3.6 V (available in 0.1 V steps)
• Output Voltage Accuracy: 1.0%
• Supply Current: 50 mA typical
CASE 419A
• Dropout Voltage: 0.25 V (I
= 150 mA, V
= 2.5 V)
OUT
OUT
XX
M
• High PSRR: 75 dB (f = 1 kHz, V
• Line Regulation: 0.02%/V Typ.
= 2.5 V)
OUT
SOT−23−5
CASE 1212
• Stable with Ceramic Capacitors: 0.1 mF or more
• Current Fold Back Protection
XM
1
• Available in XDFN4 0.8 x 0.8 mm, SC−70, SOT23 Packages
• These are Pb−Free Devices
M
1
XDFN4
CASE 711AB
Typical Applications
• Battery−powered Equipment
• Networking and Communication Equipment
• Cameras, DVRs, STB and Camcorders
• Home Appliances
XX, XXX= Specific Device Code
M, MM = Date Code
A
Y
W
G
= Assembly Location
= Year
= Work Week
= Pb−Free Package
NCP4680x
VIN
VOUT
(Note: Microdot may be in either location)
VIN
CE
VOUT
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
C2
100n
C1
100n
GND
Figure 1. Typical Application Schematic
© Semiconductor Components Industries, LLC, 2011
1
Publication Order Number:
June, 2011 − Rev. 1
NCP4680/D
NCP4680
VIN
VIN
VOUT
VOUT
Vref
Vref
Current Limit
Current Limit
CE
CE
GND
GND
NCP4680Hxxxx
NCP4680Dxxxx
Figure 2. Simplified Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
XDFN4*
Pin No.
SC−70
Pin No.
SOT23
Pin Name
Description
1
2
3
4
−
4
3
1
5
2
5
2
3
1
4
V
Output pin
OUT
GND
CE
Ground
Chip enable pin (Active “H”)
Input pin
V
IN
NC
No connection
*Tab is GND level. (They are connected to the reverse side of this IC.
The tab is better to be connected to the GND, but leaving it open is also acceptable.
ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Voltage (Note 1)
V
6.0
V
V
IN
Output Voltage
V
OUT
−0.3 to VIN + 0.3
Chip Enable Input
V
6.0
180
V
CE
Output Current
I
mA
mW
OUT
Power Dissipation XDFN0808
Power Dissipation SC−70
Power Dissipation SOT23
Junction Temperature
286
380
P
D
420
TJ
−40 to 150
−55 to 125
2000
°C
°C
V
Storage Temperature
TSTG
ESD Capability, Human Body Model (Note 2)
ESD Capability, Machine Model (Note 2)
ESDHBM
ESDMM
200
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area.
2. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)
Latch−up Current Maximum Rating tested per JEDEC standard: JESD78.
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2
NCP4680
THERMAL CHARACTERISTICS
Rating
Symbol
Value
Unit
Thermal Characteristics, XDFN 0.8 x 0.8 mm
R
350
°C/W
q
JA
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SOT23
R
238
263
°C/W
°C/W
q
JA
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SC−70
R
q
JA
Thermal Resistance, Junction−to−Air
ELECTRICAL CHARACTERISTICS
−40°C ≤ T ≤ 85°C; V = V
+ 1 V or 2.5 V, whichever is greater; I
= 1 mA, C = C
= 0.1 mF, unless otherwise noted.
A
IN
OUT(NOM)
OUT
IN
OUT
Typical values are at T = +25°C.
A
Parameter
Operating Input Voltage
Output Voltage
Test Conditions
Symbol
Min
1.40
Typ
Max
5.25
x1.01
18
Unit
V
V
IN
T = +25 °C
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
≥ 1.8 V
< 1.8 V
≥ 1.8 V
< 1.8 V
≥ 1.8 V
< 1.8 V
V
OUT
x0.99
−18
V
A
mV
V
−40°C ≤ T ≤ 85°C
x0.985
−50
x1.015
50
A
mV
ppm/°C
Output Voltage Temp. Coefficient
−40°C ≤ T ≤ 85°C
DV /DT
OUT A
30
100
0.02
5
A
Line Regulation
Load Regulation
Dropout Voltage
V
+ 0.5 V ≤ V ≤ 5.25 V, V ≥ 1.4 V
Line
0.10
30
%/V
mV
V
OUT(NOM)
IN
IN
Reg
IOUT = 1 mA to 150 mA
Load
Reg
I
= 150 mA
V
OUT
V
OUT
= 0.8 V
= 0.9 V
V
DO
0.70
0.62
0.56
0.47
0.39
0.33
0.28
0.25
0.23
1.00
0.91
0.82
0.67
0.54
0.48
0.40
0.35
0.32
OUT
1.0 V ≤ V
1.2 V ≤ V
1.4 V ≤ V
1.8 V ≤ V
2.1 V ≤ V
2.5 V ≤ V
3.0 V ≤ V
< 1.2 V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
< 1.4 V
< 1.8 V
< 2.1 V
< 2.5 V
< 3.0 V
< 3.6 V
Output Current
I
I
150
1.0
mA
mA
mA
mA
V
OUT
Short Current Limit
Quiescent Current
Standby Current
V
= 0 V
I
40
50
OUT
SC
I
Q
70
V
CE
= 0 V, T = 25°C
0.1
1.0
A
STB
CE Pin Threshold Voltage
CE Input Voltage “H”
CE Input Voltage “L”
V
CEH
V
0.4
CEL
CE Pull Down Current
I
0.3
75
mA
CEPD
Power Supply Rejection Ratio
V
IN
= V
+ 1 V, DV = 0.2 V
,
PSRR
dB
OUT
OUT
IN
pk−pk
I
= 30 mA, f = 1 kHz
Output Noise Voltage
f = 10 Hz to 100 kHz,
= 30 mA
V
≥ 1.8 V
V
N
20 x
OUT
mV
rms
OUT
OUT
I
V
OUT
V
< 1.8 V
40 x
V
OUT
Low Output N−channel Tr. On Res-
V
= 4 V, V = 0 V
R
60
W
W
IN
CE
LOW
istance
Minimum Start−up Equivalent Res-
istance
V
OUT
≤ 1.8 V (Note 3)
R
13 *
SUMIN
V
OUT
V
OUT
> 1.8 V
6.7 *
OUT
V
3. See Current Limit paragraph in application part for explanation.
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NCP4680
TYPICAL CHARACTERISTICS
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
2.0
1.8
2.8 V
4.8 V
V
IN
= 1.4 V
1.5 V
1.6 V
V
= 2.2 V
IN
1.6
1.4
2.8 V
3.8 V
1.8 V
1.2
1.0
0.8
0.6
0.4
0.2
0.0
5.25 V
4.8 V
3.8 V
0
0
0
50
100
150
200
(mA)
250
300
350
350
150
0
50
100 150 200 250 300 350 400
(mA)
I
I
OUT
OUT
Figure 3. Output Voltage vs. Output Current
Figure 4. Output Voltage vs. Output Current
0.8 V Version (TJ = 255C)
1.8 V Version (TJ = 255C)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
5.25 V
4.5 V
5.25 V
V
IN
= 3.5 V
V
= 3 V
IN
4.5 V
3.2 V
3.6 V
3.5 V
50
100
150
200
(mA)
250
300
0
50
100
150
OUT
200
(mA)
250
300
350
I
I
OUT
Figure 5. Output Voltage vs. Output Current
Figure 6. Output Voltage vs. Output Current
2.8 V Version (TJ = 255C)
3.3 V Version (TJ = 255C)
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
T = 85°C
J
T = 85°C
J
25°C
−40°C
25°C
−40°C
25
50
75
(mA)
100
125
0
25
50
75
(mA)
100
125
150
I
I
OUT
OUT
Figure 7. Dropout Voltage vs. Output Current
0.8 V Version
Figure 8. Dropout Voltage vs. Output Current
1.8 V Version
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NCP4680
TYPICAL CHARACTERISTICS
0.30
0.25
0.20
0.15
0.10
0.05
0
0.30
0.25
0.20
0.15
0.10
0.05
0
T = 85°C
J
T = 85°C
J
25°C
−40°C
25°C
−40°C
0
25
50
75
(mA)
100
125
150
0
25
50
75
100
125
150
I
I
(mA)
OUT
OUT
Figure 9. Dropout Voltage vs. Output Current
2.8 V Version
Figure 10. Dropout Voltage vs. Output Current
3.3 V Version
0.85
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
0.75
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1.75
V
IN
= 1.8 V
V
IN
= 2.8 V
−40
−20
0
20
40
60
80
−40
−20
0
20
40
60
80
T , JUNCTION TEMPERATURE (°C)
J
T , JUNCTION TEMPERATURE (°C)
J
Figure 11. Output Voltage vs. Temperature,
0.8 V Version
Figure 12. Output Voltage vs. Temperature,
1.8 V Version
2.85
3.35
V
IN
= 3.8 V
V
IN
= 4.3 V
2.84
2.83
2.82
2.81
2.80
2.79
2.78
2.77
2.76
2.75
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
3.25
−40
−20
0
20
40
60
80
−40
−20
0
20
40
60
80
T , JUNCTION TEMPERATURE (°C)
J
T , JUNCTION TEMPERATURE (°C)
J
Figure 13. Output Voltage vs. Temperature,
2.8 V Version
Figure 14. Output Voltage vs. Temperature,
3.3 V Version
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NCP4680
TYPICAL CHARACTERISTICS
140
120
100
80
120
100
80
60
40
20
0
60
40
20
0
0
1
2
3
4
5
0
1
2
3
4
5
V
IN
, INPUT VOLTAGE (V)
V , INPUT VOLTAGE (V)
IN
Figure 15. Supply Current vs. Input Voltage,
0.8 V Version
Figure 16. Supply Current vs. Input Voltage,
1.8 V Version
140
120
100
80
140
120
100
80
60
60
40
40
20
20
0
0
0
1
2
3
4
5
0
1
2
3
4
5
V
IN
, INPUT VOLTAGE (V)
V , INPUT VOLTAGE (V)
IN
Figure 17. Supply Current vs. Input Voltage,
2.8 V Version
Figure 18. Supply Current vs. Input Voltage,
3.3 V Version
60
55
50
45
40
60
55
50
45
40
−40
−20
0
20
40
60
80
−40
−20
0
20
40
60
80
T , JUNCTION TEMPERATURE (°C)
J
T , JUNCTION TEMPERATURE (°C)
J
Figure 19. Supply Current vs. Temperature,
0.8 V Version
Figure 20. Supply Current vs. Temperature,
1.8 V Version
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NCP4680
TYPICAL CHARACTERISTICS
60
55
50
45
40
60
55
50
45
40
−40
−20
0
20
40
60
80
−40
−20
0
20
40
60
80
T , JUNCTION TEMPERATURE (°C)
J
T , JUNCTION TEMPERATURE (°C)
J
Figure 21. Supply Current vs. Temperature,
2.8 V Version
Figure 22. Supply Current vs. Temperature,
3.3 V Version
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1 mA
1 mA
30 mA
30 mA
I
= 50 mA
OUT
I
= 50 mA
OUT
0
1
2
3
4
5
0
1
2
3
4
5
V
IN
, INPUT VOLTAGE (V)
V
IN
, INPUT VOLTAGE (V)
Figure 23. Output Voltage vs. Input Voltage,
0.8 V Version
Figure 24. Output Voltage vs. Input Voltage,
1.8 V Version
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.5
2.0
1.5
1.0
0.5
0
30 mA
1 mA
1 mA
30 mA
I
= 50 mA
OUT
I
= 50 mA
OUT
0
1
2
3
4
5
0
1
2
3
4
5
V
IN
, INPUT VOLTAGE (V)
V
IN
, INPUT VOLTAGE (V)
Figure 25. Output Voltage vs. Input Voltage,
2.8 V Version
Figure 26. Output Voltage vs. Input Voltage,
3.3 V Version
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NCP4680
TYPICAL CHARACTERISTICS
120
100
80
60
40
20
0
120
100
80
60
40
20
0
I = 1 mA
OUT
I
= 1 mA
OUT
30 mA
30 mA
150 mA
150 mA
0.1
1
10
FREQUENCY (kHz)
100
1000
1000
1000
0.1
1
10
FREQUENCY (kHz)
100
1000
1000
1000
Figure 27. PSRR, 0.8 V Version, VIN = 1.8 V
Figure 28. PSRR, 1.8 V Version, VIN = 2.8 V
120
100
80
60
40
20
0
120
100
80
60
40
20
0
I
= 1 mA
OUT
I
= 1 mA
OUT
30 mA
30 mA
150 mA
150 mA
0.1
1
10
FREQUENCY (kHz)
Figure 29. PSRR, 2.8 V Version, VIN = 3.8 V
100
0.1
1
10
FREQUENCY (kHz)
Figure 30. PSRR, 3.3 V Version, VIN = 4.3 V
100
2.5
2.0
1.5
1.0
0.5
0
2.5
2.0
1.5
1.0
0.5
0.1
0.01
0.1
1
10
100
0.01
0.1
1
10
100
FREQUENCY (kHz)
FREQUENCY (kHz)
Figure 31. Output Voltage Noise, 0.8 V Version,
IN = 1.8 V
Figure 32. Output Voltage Noise, 1.8 V Version,
IN = 2.8 V
V
V
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NCP4680
TYPICAL CHARACTERISTICS
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.01
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
FREQUENCY (kHz)
Figure 33. Output Voltage Noise, 2.8 V Version,
Figure 34. Output Voltage Noise, 3.3 V Version,
IN = 4.3 V
V
IN = 3.8 V
V
3.3
2.8
2.3
1.8
1.3
0.801
0.800
0.799
0.798
0.797
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 35. Line Transients, 0.8 V Version,
tR = tF = 5 ms, IOUT = 30 mA
4.3
3.8
3.3
2.8
2.3
1.801
1.800
1.799
1.798
1.797
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 36. Line Transients, 1.8 V Version,
tR = tF = 5 ms, IOUT = 30 mA
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NCP4680
TYPICAL CHARACTERISTICS
5.3
4.8
4.3
3.8
3.3
2.801
2.800
2.799
2.798
2.797
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 37. Line Transients, 2.8 V Version,
tR = tF = 5 ms, IOUT = 30 mA
5.8
5.3
4.8
4.3
3.8
3.302
3.301
3.300
3.299
3.298
3.297
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 38. Line Transients, 3.3 V Version,
tR = tF = 5 ms, IOUT = 30 mA
150
100
50
0
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 39. Load Transients, 0.8 V Version,
OUT = 50 − 100 mA, tR = tF = 0.5 ms, VIN = 1.8 V
I
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NCP4680
TYPICAL CHARACTERISTICS
150
100
50
0
1.83
1.82
1.81
1.80
1.79
1.78
1.77
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 40. Load Transients, 1.8 V Version,
OUT = 50 − 100 mA, tR = tF = 0.5 ms, VIN = 2.8 V
I
150
100
50
0
2.83
2.82
2.81
2.80
2.79
2.78
2.77
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 41. Load Transients, 2.8 V Version,
IOUT = 50 − 100 mA, tR = tF = 0.5 ms, VIN = 3.8 V
150
100
50
0
2.83
2.82
2.81
2.80
2.79
2.78
2.77
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 42. Load Transients, 3.3 V Version,
IOUT = 50 − 100 mA, tR = tF = 0.5 ms, VIN = 4.3 V
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NCP4680
TYPICAL CHARACTERISTICS
225
150
75
0
0.90
0.85
0.80
0.75
0.70
0.65
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 43. Load Transients, 0.8 V Version,
I
I
I
OUT = 1 − 150 mA, tR = tF = 0.5 ms, VIN = 1.8 V
225
150
75
0
1.90
1.85
1.80
1.75
1.70
1.65
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 44. Load Transients, 1.8 V Version,
OUT = 1 − 150 mA, tR = tF = 0.5 ms, VIN = 2.8 V
225
150
75
0
2.90
2.85
2.80
2.75
2.70
2.65
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 45. Load Transients, 2.8 V Version,
OUT = 1 − 150 mA, tR = tF = 0.5 ms, VIN = 3.8 V
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NCP4680
TYPICAL CHARACTERISTICS
225
150
75
0
3.40
3.35
3.30
3.25
3.20
3.15
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 46. Load Transients, 3.3 V Version,
IOUT = 1 − 150 mA, tR = tF = 0.5 ms, VIN = 4.3 V
2.0
Chip Enable
1.5
1.0
0.5
0
0.8
0.6
0.4
0.2
0
I
= 1 mA
OUT
I
= 100 mA
OUT
−0.2
0
5
10 15 20 25 30 35 40 45 50
t (ms)
Figure 47. Start−up, 0.8 V Version, VIN = 1.8 V
4
3
2
1
0
Chip Enable
2.0
1.5
1.0
0.5
0
I
= 1 mA
OUT
I
= 150 mA
OUT
−0.5
0
5
10 15 20 25 30 35 40 45 50
t (ms)
Figure 48. Start−up, 1.8 V Version, VIN = 2.8 V
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NCP4680
TYPICAL CHARACTERISTICS
4.5
3.0
1.5
0
Chip Enable
3.0
2.5
2.0
1.5
1.0
0.5
0
I
= 1 mA
OUT
I
= 150 mA
OUT
−0.5
0
5
10 15 20 25 30 35 40 45 50
t (ms)
Figure 49. Start−up, 2.8 V Version, VIN = 3.8 V
6.0
4.5
3.0
1.5
0
Chip Enable
4
3
I
= 1 mA
OUT
2
1
I
= 150 mA
OUT
0
−1
0
5
10 15 20 25 30 35 40 45 50
t (ms)
Figure 50. Start−up, 3.3 V Version, VIN = 4.3 V
2.0
1.5
1.0
0.5
0
Chip Enable
0.8
0.6
0.4
0.2
0
I
= 1 mA
OUT
I
= 30 mA
OUT
I
= 100 mA
OUT
−0.2
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 51. Shutdown, 0.8 V Version D,
V
IN = 1.8 V
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14
NCP4680
TYPICAL CHARACTERISTICS
4
3
2
1
0
Chip Enable
2.0
1.5
1.0
0.5
0
I
= 1 mA
OUT
I
= 30 mA
OUT
I
= 150 mA
OUT
−0.5
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 52. Shutdown, 1.8 V Version D,
V
IN = 2.8 V
4.5
3.0
1.5
0
3.0
2.5
2.0
1.5
1.0
0.5
0
Chip Enable
I
= 1 mA
OUT
I
= 30 mA
OUT
I
= 150 mA
OUT
−0.5
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 53. Shutdown, 2.8 V Version D,
V
IN = 3.8 V
6.0
4.5
3.0
1.5
0
Chip Enable
4
3
I
= 1 mA
OUT
2
I
= 30 mA
OUT
1
I
= 150 mA
OUT
0
−1
0
10 20 30 40 50 60 70 80 90 100
t (ms)
Figure 54. Shutdown, 3.3 V Version D,
VIN = 4.3 V
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15
NCP4680
APPLICATION INFORMATION
A typical application circuit for NCP4680 series is shown
in Figure 55.
start−up into at least double the minimum equivalent load.
The minimum equivalent resistance can be computed by
formula 1:
NCP4680x
VOUT
VOUT(NOM)
VIN
VOUT
(eq. 1)
REQMIN
+
VIN
CE
IOUTMAX
This leads us to the result that the minimum equivalent
start up resistance for V < 1.8 V is:
C2
100n
C1
GND
OUT(NOM)
100n
RSUMIN + 2 @ REQMIN
(eq. 2)
Enable Operation
The enable pin CE may be used for turning the regulator
on and off. The IC is switched on when a high level voltage
is applied to the CE pin. The enable pin has an internal pull
down current source. If the enable function is not needed
connect CE pin to VIN.
Figure 55. Typical Application Schematic
Input Decoupling Capacitor (C1)
A 0.1 mF ceramic input decoupling capacitor should be
connected as close as possible to the input and ground pin of
the NCP4680. Higher values and lower ESR improves line
transient response.
Output Discharger
The D version includes a transistor between VOUT and
GND that is used for faster discharging of the output
capacitor. This function is activated when the IC goes into
disable mode.
Output Decoupling Capacitor (C2)
A 0.1 mF ceramic output decoupling capacitor is enough
to achieve stable operation of the IC. If a tantalum capacitor
is used, and its ESR is high, loop oscillation may result. The
capacitors should be connected as close as possible to the
output and ground pins. Larger values and lower ESR
improves dynamic parameters.
Thermal
As power across the IC increase, 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 also the ambient
temperature affect the rate of temperature increase for the
part. When the device has good thermal conductivity
through the PCB the junction temperature will be relatively
low in high power dissipation applications.
Current Limit
The NCP4680 includes fold−back type current limit
protection. Its typical characteristic for 0.8 V version is
shown in Figure 3. The advantage of this protection is that
power loss at the regulator is minimized at over current or
short circuit conditions. When the over current or short
circuit event disappears, the regulator reverts from fold back
to regulation. This kind of current limit may cause issues at
start−up for voltage versions below 1.8 V and some load
types: for these lower voltage options it is recommended to
PCB layout
Make the VIN and GND line as large as practical. If their
impedance is high, noise pickup or unstable operation may
result. Connect capacitors C1 and C2 as close as possible to
the IC, and make wiring as short as possible.
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16
NCP4680
ORDERING INFORMATION
Nominal Output
†
Voltage
Device
Description
Marking
Package
Shipping
NCP4680DMX10TCG
1.0 V
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
Auto discharge
A (fixed)*
XDFN4
10000 / Tape & Reel
10000 / Tape & Reel
10000 / Tape & Reel
10000 / Tape & Reel
10000 / Tape & Reel
10000 / Tape & Reel
10000 / Tape & Reel
10000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
(Pb−Free)
NCP4680DMX12TCG
NCP4680DMX15TCG
NCP4680DMX18TCG
NCP4680DMX23TCG
NCP4680DMX28TCG
NCP4680DMX30TCG
NCP4680DMX33TCG
NCP4680DSQ08T1G
NCP4680DSQ09T1G
NCP4680DSQ12T1G
NCP4680DSQ15T1G
NCP4680DSQ18T1G
NCP4680DSQ25T1G
NCP4680DSQ28T1G
NCP4680DSQ30T1G
NCP4680DSQ33T1G
1.2 V
1.5 V
1.8 V
2.3 V
2.8 V
3.0 V
3.3 V
0.8 V
0.9 V
1.2 V
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
A (fixed)*
A (fixed)*
A (fixed)*
A (fixed)*
A (fixed)*
A (fixed)*
A (fixed)*
AF08
XDFN4
(Pb−Free)
XDFN4
(Pb−Free)
XDFN4
(Pb−Free)
XDFN4
(Pb−Free)
XDFN4
(Pb−Free)
XDFN4
(Pb−Free)
XDFN4
(Pb−Free)
SC−70
(Pb−Free)
AF09
SC−70
(Pb−Free)
AF12
SC−70
(Pb−Free)
AF15
SC−70
(Pb−Free)
AF18
SC−70
(Pb−Free)
AF25
SC−70
(Pb−Free)
AF28
SC−70
(Pb−Free)
AF30
SC−70
(Pb−Free)
AF33
SC−70
(Pb−Free)
†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.
*Marking codes for XDFN0808 packages are unified.
**To order other package and voltage variants, please contact your ON Semiconductor sales representative.
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17
NCP4680
PACKAGE DIMENSIONS
SC−88A (SC−70−5/SOT−353)
CASE 419A−02
ISSUE K
A
NOTES:
1. DIMENSIONING AND TOLERANCING
PER ANSI Y14.5M, 1982.
G
2. CONTROLLING DIMENSION: INCH.
3. 419A−01 OBSOLETE. NEW STANDARD
419A−02.
4. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS.
5
4
3
−B−
S
INCHES
DIM MIN MAX
MILLIMETERS
MIN
1.80
1.15
0.80
0.10
MAX
2.20
1.35
1.10
0.30
1
2
A
B
C
D
G
H
J
0.071
0.045
0.031
0.004
0.087
0.053
0.043
0.012
0.026 BSC
0.65 BSC
M
M
B
D 5 PL
0.2 (0.008)
---
0.004
0.004
0.004
0.010
0.012
---
0.10
0.10
0.10
0.25
0.30
K
N
S
N
0.008 REF
0.20 REF
0.079
0.087
2.00
2.20
J
C
K
H
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18
NCP4680
PACKAGE DIMENSIONS
SOT−23 5−LEAD
CASE 1212−01
ISSUE A
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSIONS: MILLIMETERS.
3. DATUM C IS THE SEATING PLANE.
A
A2
B
A
D
S
A1
0.05
MILLIMETERS
5
1
4
DIM MIN
MAX
1.45
0.10
1.30
0.50
0.25
3.10
3.10
1.80
E
L
A
A1
A2
b
---
0.00
1.00
0.30
0.10
2.70
2.50
1.50
2
3
E1
5X b
L1
C
c
M
S
S
A
D
0.10
C B
e
C
E
E1
e
0.95 BSC
L
0.20
0.45
---
0.75
L1
RECOMMENDED
SOLDERING FOOTPRINT*
5X
0.85
3.30
5X
0.56
0.95
PITCH
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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19
NCP4680
PACKAGE DIMENSIONS
XDFN4 0.8x0.8, 0.48P
CASE 711AB−01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINALS.
4X
L3
A
B
D
L2
0.06
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
PIN ONE
REFERENCE
E
REF
MILLIMETERS
2X
0.05
C
DETAIL A
0.37
DIM MIN
−−−
A1 0.00
MAX
0.40
0.05
A
0.05
C
2X
A3
b
D
0.10 REF
TOP VIEW
0.17
0.27
0.07
0.80 BSC
0.30
0.80 BSC
0.48 BSC
(A3)
D2 0.20
4X
0.17
0.05
0.05
C
E
e
L
A
0.23
0.33
0.27
0.11
L2 0.17
L3 0.01
C
SEATING
PLANE
NOTE 4
A1
DETAIL B
C
SIDE VIEW
RECOMMENDED
MOUNTING FOOTPRINT*
e
e/2
4X
0.27
D2
455
3X
0.44
DETAIL A
1
2
0.32
PACKAGE
OUTLINE
3
4
1.00
3X L
4X b
DETAIL B
M
0.05
C A B
0.48
NOTE 3
PITCH
BOTTOM VIEW
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5773−3850
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
NCP4680/D
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