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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. The ISL62383 and ISL62383C have the same outputs as the ISL62381, ISL62382, ISL62381C and ISL62382C but without LDO3 linear regulator. The channel 2 switching regulator will automatically take over the LDO5 load when programmed to 5V output. This provides a large power savings and boosts efficiency. These controllers include onboard power-up sequencing, two power-good (PGOOD) outputs, digital soft-start, and internal soft-stop output discharge that prevent negative voltages on shutdown.

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