High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Computers

The ISL62381, ISL62382, ISL62383, ISL62381C, ISL62382C and ISL62383C family of controllers generate supply voltages for battery-powered systems. These controllers include two pulse-width modulation (PWM) controllers, adjustable from 0.6V to 5.5V, and two linear regulators, LDO5 and LDO3, that generate a fixed 5V and an adjustable output respectively, and each can deliver up to 100mA.

Features

• High Performance R3 Technology

• Fast Transient Response

• ±1 Output Voltage Accuracy: -10°C to +100°C

• Two Fully Programmable Switch-Mode Power Supplies with Independent Operation

• Programmable Switching Frequency

• Integrated MOSFET Drivers and Bootstrap Diode

• Adjustable (+1.2V to +5V) LDO Output

• Fixed +5V LDO Output with Automatic Switchover to SMPS2

• Internal Soft-Start and Soft-Stop Output Discharge

• Wide Input Voltage Range: +5.5V to +25V

• Full and Ultrasonic Pulse-Skipping Mode

• Power-Good Indicator

• Overvoltage, Undervoltage and Overcurrent Protection

• Fault Identification by PGOOD Pull-Down Resistance

• Thermal Monitor and Protection

• Pb-Free (RoHS Compliant)

Applications

• Notebook and Sub-Notebook Computers

• PDAs and Mobile Communication Devices

• 3-Cell and 4-Cell Li+ Battery-Powered Devices

• General Purpose Switching Buck Regulators