ISL8014A

• Product Introduction

Key features:

High-efficiency synchronous step-down regulator with up to 97% efficiency Power Good (PG) outputs a 1ms latency Supply voltages from 2.8V to 5.5V 3% output accuracy of Over-Temperature/Load/Line 4A output current Pin compatible to ISL8013A Start the pre-biased output Internal Soft Start - 1ms Disabled during soft stop output discharge 35μA quiescent current in PFM mode Choice of forced PWM mode and PFM mode External synchronization up to 4MHz Logic-controlled shutdown current is less than 1μA 100% maximum duty cycle Internal current mode compensation Peak current limiting and hiccup mode short circuit protection Over-temperature protection Small 16 LD 4mmx4mm QFN Lead-free (RoHS compliant) description

ISL8014A is a high-efficiency, monolithic synchronous step-down DC/DC converter that provides up to 4A of continuous output current from 2.8V to 5.5V input supply. It features a high-frequency current control architecture to provide fast transient response and superior loop stability with very low duty cycle operation. ISL8014A integrates a pair of low-on-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize the number of external components. 100% duty cycle operation allows for a voltage drop of less than 400mV of 4A output current. Pulse width modulation (PWM) switching frequencies up to 1MHz allow multiple ICs to be phase-synchronized using small external components and SYNC inputs to reduce ripple and eliminate beat frequency ISL8014A can be configured to intermittent or force continuous operation light loading. Forced continuous operation reduces noise and RF interference, while intermittent mode provides high efficiency by reducing switching losses at light loads, fault protection provides internal hiccup mode current limitation under short circuit and overcurrent conditions, output overvoltage comparator and over-temperature monitoring circuitry. When the output is in the first power supply good output voltage monitor. ISL8014A available in a free package of space-saving 4x4 QFN lead-free low tropical exposed pad lead frames. ISL8014A power consumption timer that provides 1ms of power good (PG) action. When the power is turned off, the output capacitor of the ISL8014A is discharged. Other features include internal soft start, internal compensation, overcurrent protection, and thermal shutdown. ISL8014A is available in a QFN package with 1mm and a maximum height of 16 LD 4mmx4mm. The complete converter has a footprint of less than 0.4 inches2.