MP3336A 2.7-5.5V, 2A, 4MHz Flash LED Driver WLCSP-20

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MP3336A 2.7-5.5V, 2A, 4MHz Flash LED Driver WLCSP-20

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MPS WLCSP-20 LED Drivers LED Power Management

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MP3336A 2.7-5.5V, 2A, 4MHz Flash LED Driver WLCSP-20

The MPS MP3336A is a Flash LED Driver. It operates from a 2.7 V to 5.5 V input, is rated for 2 A and switches at 4 MHz. It is supplied in a WLCSP-20 package.

The MP3336A is a compact, dual-channel, high- power, flash LED driver that can drive up to 2A in flash mode for each LED.

Key Specifications

Part Number	MP3336A
Function	Flash LED Driver
Input Voltage	2.7 V to 5.5 V
Current Rating	2 A
Switching Frequency	4 MHz
Interface	I²C
Package	WLCSP-20
Ordering Codes	MP3336A

Features

2.7V~5.5V Input Voltage
1/2/3/4MHz Selectable Max Fsw
Fsw Fold-Back Function
400kHz I2C Compatible Interface
Standby/Flash/Assist/Indicator/5V DC Modes Flash Mode
Up to 2A/Ch Programmable Current with ±7% Accuracy for Each LED, 7.84mA/Step Assist Mode
Up to 319mA/Ch Programmable Current with ±7% Accuracy for Each LED, 1.25mA/Step Indicator Mode
Works in 31.5kHz PWM Dimming Mode with 2/16, 3/16, 4/16, 5/16 Duty Cycles
Used for Blinking and 128/256/512ms Selectable Blinking Time 5V DC Mode
Output Constant 5V DC Voltage

Typical Application Circuit

Applications

Smartphone Flash LED Application
Cameras for Tablets

Design Notes

Channel-to-channel current matching sets backlight uniformity; check the matching spec at the current you will actually run.
In boost topologies the OVP threshold must clear the worst-case forward voltage of the longest string, including temperature and binning spread.
Keep PWM dimming above 200 Hz to stay clear of visible flicker, and away from the audio band if the product has a speaker.
Size the inductor and output capacitor for the string current ripple, not the total LED current.