Features 

„ Operating Voltage：4.5V to 7.5V „ High Operating Frequency：1MHz „ High Output Voltage：40V „ Shutdown Current：<1µA „ Over-Voltage Protection „ Digital Dimming Control „ Built-in Cycle-by-Cycle Current-Limiting „ Soft-Start Function „ 0.3V Low Reference Voltage „ Tiny SOT-23-6 and MSOP-8 Package

General Description

The ZCC9293 boost converter contains a 0.7 Ω 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 4.5V to 7.5V 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 IC includes cycle-by-cycle 600mA current limiting to maximum inductor current and over-temperature protection circuit. The over-voltage protection will be enabled when VOUT exceeds 40V. The current of LED is set by a resistor connected between FB and GND. The ZCC9293 is available in SOT-23-6 package.