参数资料
| 型号： | NCP5425DB |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 20TSSOP |
| 产品变化通告： | Product Obsolescence 14/Apr/2010 |
| 标准包装： | 75 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 938kHz |
| 占空比： | 100% |
| 电源电压： | 4.75 V ~ 13.2 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 125°C |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 管件 |
NCP5425
PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Symbol
GATE(H)1
GATE(L)1
GND
BST
NC
NC
IS+1
IS?1
V FB1
COMP1
COMP2
V FB2
V REF2
IS+2
IS?2
MODE
R OSC
V CC
GATE(L)2
GATE(H)2
Description
High Side Switch FET driver pin for the channel 1 FET.
Low Side Synchronous FET driver pin for the channel 1 FET.
Ground. All circuits are referenced to this pin. IC substrate connection.
Power input for GATE(H)1 and GATE(H)2 pins.
No connection.
No connection.
Positive input for channel 1 overcurrent comparator.
Negative input for channel 1 overcurrent comparator.
Error amplifier inverting input for channel 1.
Channel 1 Error Amp output. PWM comparator reference input. A capacitor to GND provides Error
Amp compensation. The same capacitor provides soft?start timing for channel 1. This pin also disables
the channel 1 output when pulled below 0.2 V.
Channel 2 Error Amp output. PWM comparator reference input. A capacitor to GND provides Error
Amp compensation and soft?start timing for channel 2. Channel 2 output is disabled when this pin is
pulled below 0.2 V.
Error amplifier inverting input for channel 2.
Error amplifier noninverting input for channel 2.
Positive input for channel 2 overcurrent comparator.
Negative input for channel 2 overcurrent comparator.
Input pin used to inform internal circuitry of dual output or single output operation. Ground this pin for
dual output operation, leave open for single output operation.
A resistor from this pin to ground sets switching frequency.
Input Power supply pin. Power input for GATE(L)1 and GATE(L)2 pins.
Low Side Synchronous FET driver pin for the channel 2 FET.
High Side Switch FET driver pin for the channel 2 FET.
http://onsemi.com
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