ams AS3689 Lighting Management Unit

Discontinued
×
Discontinued

Description

The AS3689 is a highly-integrated CMOS power and lighting management unit to supply power to LCD and camera modules in mobile telephones, and other 1-cell Li+ or 3-cell NiMH powered devices. The device incorporates one low-power, low-dropout regulator (LDO), one DC-DC step-up converter for white backlight LEDs, one high-power charge pump for camera flash LEDs, support for up to 11 current sinks, a two-wire serial interface, and control logic all onto a single device.

Details

Features

  • High-efficiency DC-DC step-up converter
  • High-efficiency high-power charge pump
  • Supports up to 15 current sinks
  • PWM generation and LED pattern generator

Benefits

  • Up to 25V/50mA for white LEDs
  • CP output current up to 400mA
  • 3 high voltage current sinks
  • Autonomous logarithmic up/down dimming

Parameters

Flash (max. l) [mA]
400
# of Current Sinks (HV)
3
# of Current Sinks (LV)
12
Package [mA]
150
DC-DC (max. l)
WL-CSP36 (3x3)-0.5
Dimming [V]
Controller
Dimming
Yes
LED Test
Yes
DC-DC (max. l)
Yes
# of LDOs [mA]
Controller
CP (max. l)
1
RGB Pattern
Yes

Downloads

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Datasheets

AS3689 DS000253

Datasheet

Lifecycle documents

Images