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NCV51411 데이터시트(Datasheet) 4 Page - ON Semiconductor

부품명 NCV51411
상세내용  1.5 A, 260 kHz, Low Voltage Buck Regulator with Synchronization Capability
PDF  16 Pages
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제조사  ONSEMI [ON Semiconductor]
홈페이지  http://www.onsemi.com
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NCV51411
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (−40°C < TJ < 125°C, 4.5 V< VIN < 40 V; unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Oscillator
Operating Frequency
224
260
296
kHz
Frequency Line Regulation
0.05
0.15
%/V
Maximum Duty Cycle
85
90
95
%
VFB Frequency Foldback Threshold
0.29
0.32
0.36
V
PWM Comparator
Slope Compensation Voltage
Fix VFB, DVC/DTON
8.0
17
26
mV/ms
Minimum Output Pulse Width
VFB to VSW
150
300
ns
Power Switch
Current Limit
VFB > 0.36 V
1.6
2.3
3.0
A
Foldback Current
VFB < 0.29 V
0.9
1.5
2.1
A
Saturation Voltage
IOUT = 1.5 A, VBOOST = VIN + 2.5 V
0.4
0.7
1.0
V
Current Limit Delay
Note 4
120
160
ns
Error Amplifier
Internal Reference Voltage
1.244
1.270
1.296
V
Reference PSRR
Note 4
40
dB
FB Input Bias Current
0.02
0.1
mA
Output Source Current
VC = 1.270 V, VFB = 1.0 V
15
25
35
mA
Output Sink Current
VC = 1.270 V, VFB = 2.0 V
15
25
35
mA
Output High Voltage
VFB = 1.0 V
1.39
1.46
1.53
V
Output Low Voltage
VFB = 2.0 V
5.0
20
60
mV
Unity Gain Bandwidth
Note 4
500
kHz
Open Loop Amplifier Gain
Note 4
70
dB
Amplifier Transconductance
Note 4
6.4
mA/V
Sync
Sync Frequency Range
305
470
kHz
Sync Pin Bias Current
VSYNC = 0 V
VSYNC = 5.0 V
230
0.1
360
0.2
485
mA
mA
Sync Threshold Voltage
0.9
1.5
1.9
V
Shutdown
Shutdown Threshold Voltage
ICC = 2 mA
1.0
1.3
1.6
V
Shutdown Pin Bias Current
VSHDNB = 0 V
0.14
5.00
35
mA
Thermal Shutdown
Overtemperature Trip Point
Note 4
175
185
195
°C
Thermal Shutdown Hysteresis
Note 4
42
°C
4. Guaranteed by design, not 100% tested in production.




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