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參數(shù)資料
| 型號(hào)： | NCV8842PWR2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A, 170 kHz, Buck Regulator with Synchronization Capability |
| 中文描述： | 3 A SWITCHING REGULATOR, 187 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | LEAD FREE, SOP-16 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大?。?/td> | 186K |
| 代理商： | NCV8842PWR2G |
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NCV8842
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(40
°
C < T
J
< 125
°
C, 4.5 V< V
IN
< 40
V; unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Oscillator
Operating Frequency
153
170
187
kHz
Frequency Line Regulation
0.05
0.15
%/V
Maximum Duty Cycle
85
90
95
%
V
FB
Frequency Foldback Threshold
0.29
0.32
0.36
V
PWM Comparator
Slope Compensation Voltage
Fix V
FB,
V
C
/ T
ON
5.0
9.0
17
mV/ s
Minimum Output Pulse Width
V
FB
to V
SW
100
200
ns
Power Switch
Current Limit
V
FB
> 0.36 V
1.6
2.3
3.0
A
Foldback Current
V
FB
< 0.29 V
0.9
1.5
2.1
A
Saturation Voltage
I
OUT
= 1.5 A, V
BOOST
= V
IN
+ 2.5 V
0.4
0.7
1.0
V
Current Limit Delay
Note 3
120
160
ns
Error Amplifier
Internal Reference Voltage
1.244
1.270
1.296
V
Reference PSRR
Note 3
40
dB
FB Input Bias Current
0.02
0.1
A
Output Source Current
V
C
= 1.270 V, V
FB
= 1.0 V
15
25
35
A
Output Sink Current
V
C
= 1.270 V, V
FB
= 2.0 V
15
25
35
A
Output High Voltage
V
FB
= 1.0 V
1.39
1.46
1.53
V
Output Low Voltage
V
FB
= 2.0 V
5.0
20
60
mV
Unity Gain Bandwidth
Note 3
500
kHz
Open Loop Amplifier Gain
Note 3
70
dB
Amplifier Transconductance
Note 3
6.4
mA/V
Sync
Sync Frequency Range
190
355
kHz
Sync Pin Bias Current
V
SYNC
= 5.0 V
360
485
A
Sync Threshold Voltage
0.9
1.5
1.9
V
Shutdown
Shutdown Threshold Voltage
1.0
1.3
1.6
V
Shutdown Pin Bias Current
V
SHDNB
= 0 V
0.14
5.00
35
A
Thermal Shutdown
Overtemperature Trip Point
Note 3
175
185
195
°
C
Thermal Shutdown Hysteresis
Note 3
42
°
C
3. Guaranteed by design, not 100% tested in production.
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