G5126

Global Mixed-mode Technology G5126 High Efficiency, Constant Current, Boost DC/DC White-LEDs Drive Features „ Operating Voltage：2.7V to 5.5V „ High Operating Frequency：1MHz „ High Output Voltage：28V „ Shutdown Current：<1µA „ Over-Voltage Protection „ Digital Dimming Control „ Built-in Cycle-by-Cycle Current-Limiting „ Soft-Start Function „ 0.2V Low Reference Voltage „ SOT-23-6 & TDFN2X2-8 Package Applications „ LED Module „ Compact Back Light Module „ Constant Current Source General Description The G5126 boost converter contains a 0.7Ω internal switch. The IC operates at constant frequency 1MHz, allowing the use of tiny, low cost and low height inductors and capacitors. The IC operates from a 2.7V to 5.5V supply voltage. High inrush current at start-up is eliminated using the soft-start function. Constant frequency current mode PWM architecture results in low, predictable output noise. The G5126 includes cycle-by-cycle 850mA current limiting to maximum inductor current and over-temperature protection circuit. The over-voltage protection will be enabled when VOUT exceeds 28V. The current of LED is set by a resistor connected between FB and GND. The G5126 is available in SOT-23-6 & TDFN2X2-8 package. Ordering Information ORDER NUMBER G5126TB1U G5126RC1U Note: TB: SOT-23-6 RC: TDFN2X2-8 1 : Bonding Code U: Tape & Reel MARKING 5126x 5126 TEMP. RANGE -40°C to 85°C -40°C to 85°C PACKAGE (Green) SOT-23-6 TDFN2X2-8 Pin Configuration Typical Application Circuit LX 1 G512...