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

AS3648 LED-flash driver

2A dual LED-flash driver

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The AS3648 is an inductive high efficient DCDC step up converter with two current sinks for dual LED flash applications and it supports dual tone flash. The DCDC step up converter operates at a fixed frequency of 4MHz and includes soft startup to allow easy integration into noise sensitive RF systems. The two current sinks can operate in flash / torch / assist (=video) light modes. The AS3648 includes flash timeout, overvoltage, overtemperature, undervoltage and LED short circuit protection functions.

Key Features

  • Supports two tone flash
  • 4MHz fixed frequency DCDC
  • Small chip-scale package
  • Overvoltage, overtemperature, undervoltage, flash timeout and LED short circuit protection functions

Key Benefits

  • Adjustment of LED flash color temperature
  • Tiny external coils
  • Small system size
  • High system safety

Product Facts

Topology Inductive
DC-DC frequ. [MHz] 4
Performance [ILed max] 2000mA
- [Vout max] 5.5
LED channels [Curr. sinks] 2
- [Curr. source] low side
- [Flash LEDs] 1 or 2
- [Indicator LED] Flash LED
Interfaces [I²C]
- [Enable]
Safety features [TimeOut]
- [TXMask]
Package WL-CSP-13 (2.25x1.5)-0.5p

Additional Information


Dual LED flash solution for mobile phones and tablets