APU3048

Technology Licensed from International Rectifier APU3048 DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER PRELIMINARY DATA SHEET FEATURES Dual Synchronous Controller in 16-Pin Package with 1808 out-of-phase operation LDO Controller with 40mA drive Configured as 2-Independent PWM Controller Flexible, Same or Separate Supply Operation Operation from 4V to 25V Input www.DataSheet4U.com Internal 200KHz Oscillator Soft-Start controls all outputs Fixed Frequency Voltage Mode 500mA Peak Output Drive Capability Programmable Outputs RoHS Compliant DESCRIPTION The APU3048 IC combines a Dual synchronous Buck controller and a linear regulator controller, providing a cost-effective, high performance and flexible solution for multi-output applications. The Dual synchronous controller is configured as 2-independent PWM controller. APU3048 provides a separate adjustable output by driving a switch as a linear regulator. This device features an internal 200KHz oscillator, under-voltage lockout for all input supplies, an external programmable soft start function as well as output under-voltage detection that latches off the device when an output short is detected. APPLICATIONS DDR Memory Source Sink Vtt Application Graphic Card Hard Disk Drive Power supplies requiring multiple outputs TYPICAL APPLICATION 12V 5V VcH1 Vcc Q1 C1 R1 V OUT3 C2 R2 C3 R3 Comp1 R4 Comp2 Fb3 VOUT3 VcH2 HDrv1 1N4148 Q2 L1 VOUT1 3.3V LDrv1 Q3 C6 U1 APU3048 PGnd R5 Fb1 Fb2 HDrv2 1N4148 R6 Q4 L2 ...