L5101 Datasheet PDF | Unisonic Technologies

Unisonic Technologies L5101

L5101 is a fixed frequency step-up PWM DC/DC converter and designed for white LEDS driving with a constant current to provide backlight in handheld devices. The device switches at a high frequency 1.2MHz by an internal N-channel MOSFET switch to be capable of minimum external components using. The UTC L5101 can drive up to 5 LEDs in series by a Li-Ion cell.

Part No.	L5101
Datasheet	L5101 Download
Manufacturer	Unisonic Technologies
Description	WHITE LED STEP-UP CONVERTER
Buy	Stock & Price

DESCRIPTION

The UTC Series connection of LEDS provides identical LED currents resulting in uniform brightness without ballast resistors. The low 95mV feedback voltage minimizes power loss in the current setting resistor can have better efficiency. LINEAR INTEGRATED CIRCUIT 6 5 4 1 2 3 SOT-26 *Pb-free plating product number: L5101L

FEATURES

* Built-In Open Circuit Protection * Built-In Over Voltage Protection * High Efficiency(Up to 84% at VIN=4.2V, 3 LEDs, ILED =20mA) * 1.2MHz fixed switching frequency * Low supply current: 70µA * Matches LED current * Requires tiny inductor and capacitors ORDERING INFORMATION Order Number Normal Lead Free Plating L5101-AG6-R L5101L-AG6-R Package SOT-26 Packing Tape Reel Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 9 QW-R103-026,A L5101 PIN CONFIGURATION LINEAR INTEGRATED CIRCUIT OVP 6 VIN 5 SW 4 1 SHDN PIN DESCRIPTIONS PIN NO. 1 2 3 4 5 6 2 GND 3 FB SYMBOL

DESCRIPTION

SHDN Tie to higher than 1.5V to enable device, 0.3V or less to disable device.