MP3302 1.3A, 1.3MHz Single-cell Step-up White LED Driver TSOT23

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MP3302 1.3A, 1.3MHz Single-cell Step-up White LED Driver TSOT23

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MPS TSOT23 LED Drivers LED Power Management Step-Up

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MP3302 1.3A, 1.3MHz Single-cell Step-up White LED Driver TSOT23

The MPS MP3302 is a Single-cell Step-up White LED Driver. It is rated for 1.3 A, handles 1s battery stacks and switches at 1.3 MHz. It is supplied in a TSOT23 package.

The MP3302 is a step-up converter designed for driving arrays of WLEDS from a single cell Lithium Ion battery.

Key Specifications

Part Number	MP3302
Function	Single-cell Step-up White LED Driver
Current Rating	1.3 A
Battery Cells	1s
Switching Frequency	1.3 MHz
Peak Efficiency	87%
Package	TSOT23
Ordering Codes	MP3302

Features

Internal Power MOSFET
Drives up to 10 Series White LEDs
Up to 87% Efficiency
Single Wire Dimming Control
1.3MHz Fixed Switching Frequency
Open Load Shutdown
Low 200mV Feedback Voltage
UVLO, Thermal Shutdown
Internal 1.3A Current Limit
Available in TSOT23-5 and 2mm x 3mm QFN8 Packages

Typical Application Circuit

Applications

5" ~ 7" LCD Panels
Handheld Computers and PDAs
Digital Still Cameras
Small LCD Displays "Monolithic Power Systems", "MPS", and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc.

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.