Datasheet

ISL8011
1.2A Integrated FETs, High Efficiency Synchronous Buck Regulator

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Key Features

High Efficiency Synchronous Buck Regulator with Up to 95% Efficiency
2.7V to 5.5V Supply Voltage
1.2A Output Current
100% Maximum Duty Cycle
Peak Current Limiting, Short Circuit Protection
200ms Power-On Reset
3% Output Accuracy Over-Temperature/Load/Line
Less than 1µA Logic Controlled Shutdown Current
Internal Loop Compensation
Internal Digital Soft-Start
Over-Temperature Protection
Enable
Small 10 Ld 3mmx3mm DFN
Pb-Free (RoHS Compliant)

Description

ISL8011 is an integrated FET, 1.2A synchronous buck regulator for general purpose point-of load applications. It is optimized for generating low output voltages down to 0.8V. The supply voltage range is from 2.7V to 5.5V allowing the use from common 3.3V or 5V supply rails and Lithium ion battery inputs. It has guaranteed minimum output current of 1.2A. 1.5MHz pulse-width modulation (PWM) switching frequency allowing the use of small external components.

The ISL8011 includes a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. 100% duty-cycle operation allows less than 200mV dropout voltage at 1.2A.

The ISL8011 offers a 200ms Power-On-Reset (POR) timer at power-up. When shutdown, the ISL8011 discharges the output capacitor. Other features include internal digital soft-start, enable for power sequence, overcurrent protection, and thermal shutdown.

The ISL8011 is offered in a 10 Ld 3mmx3mm DFN package with 1mm maximum height. The complete converter occupies less than 1cm² area.