产品概览
LT1170IQ#PBF from ADI is a 5A offline/flyback switching regulator with 3-60V input. 100kHz fixed frequency. Current mode control. TO-220-5. IQ suffix = industrial temp -40C to +125C.
工作原理
Current mode PWM controller with integrated 5A NPN power switch. 3-60V input range. 100kHz switching. Error amplifier drives PWM comparator against slope-compensated current sense. Flyback, boost, SEPIC, and forward topologies supported.
Pin Description
| 针脚 | 名称 | 功能 |
|---|---|---|
| 1 | 接地 | 地面 |
| 2 | FB | Feedback (1.244V ref) |
| 3 | VC | Error amp output/comp |
| 4 | VIN | 3-60V input |
| 5 | SW | 5A switch output |
应用
- Isolated flyback converters
- Boost regulators
- Battery chargers
- SEPIC converters
Alternative Models
| 制造商 | 部件编号 | 说明 |
|---|---|---|
| ADI | LT1171IQ#PBF | 2.5A version |
| ADI | LT1172IQ#PBF | 1.5A version |