ISL8009A 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

比赛名单

ISL8009A

1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator

Renesas Electronics 

DATASHEET

ISL8009A

1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator

FN6656

Rev 3.00

February 28, 2013

The ISL8009A is a high efficiency, monolithic, synchronous

step-down DC/DC regulator that can deliver up to 1.5A

continuous output current. It is optimized for generating low

output voltages down to 0.8V. The supply voltage range of 2.7V

to 5.5V allows for the use of single Li+cell, three NiMH cells or

a regulated 5V input. The ISL8009A uses current mode control

architecture to deliver very low duty cycle operation at high

frequency with fast transient response and excellent loop

stability. It has flexible operation mode selection of forced

PWM mode and automatic PFM/PWM with as low as 17µA

quiescent current, achieving high power conversion efficiency

under light load condition, hence maximizing battery life. High

1.6MHz pulse-width modulation (PWM) switching frequency

allows the use of small external components.

The ISL8009A integrates a pair of low ON-resistance

P-Channel and N-Channel internal MOSFETs to maximize

efficiency and minimize external component count. The 100%

duty-cycle operation allows less than 400mV dropout voltage

at 1.5A output current.

The ISL8009A offers a 2ms Power-On-Reset (POR) timer at

power-up. The timer output can be reset by RSI. When

shutdown, ISL8009A discharges the output capacitor through

a 100resistor. Other features include internal digital soft-

start, enable for power sequence, overcurrent protection, and

thermal shutdown.

The ISL8009A is offered in a 2mmx3mm 8 Ld DFN package

with 1mm maximum height. The complete converter occupies

less than 1cm2 area.

Features

• High Efficiency Synchronous Buck Regulator with up to 95%

Efficiency

• 2ms Reset Timer

• 2.7V to 5.5V Supply Voltage

• 3% Output Accuracy Over-Temperature/Load/Line

• 1.5A Guaranteed Output Current

• 17µA Quiescent Supply Current in PFM Mode

• Selectable Forced PWM Mode and PFM Mode

• Less Than 1µA Logic Controlled Shutdown Current

• 90% Maximum Duty Cycle for Lowest Dropout at 1.5A

• Internal Current Mode Compensation

• Internal Digital Soft-Start

• Peak Current Limiting, Short Circuit Protection

• Over-Temperature Protection

• Enable

• Soft Discharge Disable

• Small 8 Ld 2mmx3mm DFN

• Pb-Free (RoHS Compliant)

Applications

• DC/DC POL Modules

• µC/µP, FPGA and DSP Power

• Plug-in DC/DC Modules for Routers and Switchers

• Portable Instruments

• Test and Measurement Systems

Pin Configuration

ISL8009A

(8 LD DFN)

TOP VIEW

VIN 1

EN 2

POR 3

SKIP 4

8 LX

7 GND

6 VFB

5 RSI

*EXPOSED PAD MUST BE CONNECTED

TO THE GND PIN*

FN6656 Rev 3.00

February 28, 2013

Page 1 of 13

Share Link: