ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

AS3645A LED-flash Driver

800mA single-LED, 1A dual-LED-flash driver

Buy Now Order Sample

The AS3645A inductive LED flash driver drives up to 1000mA and can be used for single LED flash or double LED flash applications. The AS3645A auto detects whether to employ single or dual LED mode, and enables direct one-button flashlight mode. A number of safety features protect against circuit damage, including programmable current limiting, LED open/short detection, overvoltage and undervoltage, overtemperature, and automatic flash timeout timer for thermal LED protection during flash.


Key Features

  • Single or dual LED flash
  • Small chip-scale package
  • Overvoltage, overtemperature, undervoltage and LED open/short circuit protection functions.

Key Benefits

  • Tiny external coils
  • Small system size
  • High system safety

Product Facts

Topology Inductive
DC-DC frequ. [MHz] 2
Performance [ILed max] 800/500mA (2/1 LED)
- [Vout max] 10
LED channels [Curr. sinks] 1
- [Curr. source] high side
- [Flash LEDs] 1 or 2
- [Indicator LED] 1
Interfaces [I²C]
- [Enable]
Safety features [TimeOut]
- [TXMask]
Package WL-CSP-12 (1.5x2)-0.5p

Additional Information


Small size LED flash solution for mobile phones