ADP3031

www.DataSheet4U.com PRELIMINARY TECHNICAL DATA a Preliminary Technical Data FEATURES Up to 2 MHz PWM Frequency Fully Integrated 1.5 A Power Switch 3% Output Regulation Accuracy Adjustable Output Voltage from 3 V to 12 V Simple Compensation Small Inductor and MLC Capacitors 90% Efficiency Under-voltage Lockout Shutdown APPLICATIONS TFT LCD Bias Supplies Portable Electronic Instruments Industrial/Instrumentation Equipment REF FB 2 gm 2 MHz PWM Boost Switching Regulator ADP3031 Functional Block Diagram COMP ERROR AMP 1 IN 6 ADP3031 BIAS F/F RAMP GEN COMPARATOR RT 7 OSC R Q S DRIVER 5 SW SD 3 GENERAL DESCRIPTION CURRENT SENSE AMPLIFIER 8 GND 4 PGND The ADP3031 is a high frequency, step-up DC-DC switching regulator capable of 12 V boosted output voltage in a space saving MSOP-8 package. It provides high efficiency, low-noise operation, and is easy to use. Capable of operating up to 2 MHz, the high switching frequency and PWM current mode architecture allow for excellent transient response, ease of noise filtering, and also small, costsaving external inductive and capacitive components. The current limit and the power switch are integrated completely on chip. Capable of operating from 2.5 V to 5.5 V input, the ADP3031 is ideal for Thin-Film Transistor (TFT) Liquid Crystal Display (LCD) module applications, where local point-of-use power regulation is required. Featuring an adjustable output that supports voltages down to 3 V, the ADP3031 is ideal to generate today’s low vo...