AA18375AP

Agamem Microelectronics Inc. www.DataSheet4U.com AA18375AP Switching Regulator Controller PRELIMINARY OVERVIEW The AA18375AP is a two-channel PWM DC-DC converter control IC that features low-voltage operation. This IC can obtain the step-up, step-down and inverting voltages with a small number of external components. Because the IC is compactly packaged, it is best suited for use as a power supply in portable equipment. FEATURES Wide supply voltage range: 3.6 V to 15 V Low current consumption: 1.3 mA typical Control in a wide output frequency range is possible (1 kHz to 500 kHz). Timer latch, short-circuit protection circuit is built in. Circuit to prevent malfunction during low input voltage is built in. Built-in reference voltage (1.28V) output pin. Dead time period is adjustable over the whole range of duty ratio. Synchronization operation is possible. PIN Configuration (TOP VIEW) CT 1 RT 2 +IN1 3 -IN1 4 FB1 5 D.T.C.1 6 OUT1 7 GND 8 16 VREF 15 SCP 14 +IN2 13 -IN2 12 FB2 11 D.T.C.2 10 OUT2 9 VCC APPLICATIONS LCD Displays PDAs Digital Still Cameras Hand-held and portable instruments ©Copyright Agamem Microelectronics Inc. 1 www.agamem.com.tw 2006/6/27 Agamem Microelectronics Inc. www.DataSheet4U.com AA18375AP Switching Regulator Controller I/O I O I O I I — O Description IC power supply pin Output2 block push-pull type output pin PWM2 block dead-time setting pin Output pin of error amplifier 2 block Error amplifier 2 block inverting input...