Datasheet Details
| Part number | A8425 |
|---|---|
| Manufacturer | Allegro MicroSystems |
| File Size | 439.72 KB |
| Description | High Current Photoflash Capacitor Charger |
| Datasheet |
 A8425 Datasheet
|
|
|
General Description
The A8425 charges photoflash capacitors for digital cameras, camcorders, and DSC combos.
An integrated 55 V DMOS switch drives the transformer in a flyback topology optimized for 2-cell Li+ battery input.
Key Features
- Wide battery voltage range: 1.5 to 11 V.
- Integrated 55 V DMOS switch in very thin profile 3 mm × 3 mm, 0.75 mm nominal height package.
- Peak current limit continuously adjustable from 1.0 to 3.2 A.
- Output voltage sensing on primary side: no resistor divider required.
- >75% efficiency.
- Fast charge time.
- Charge Complete indication.
- Flexible, high current IGBT drive.
- Independent IGBT driver supply.
- Separate sink and source pins with 6 Ω pull-up and 2.