isl9105 Intersil Corporation, isl9105 Datasheet

isl9105

Manufacturer Part Number

isl9105

Description

600ma Low Quiescent Current 1.6mhz High Efficiency Synchronous Buck Regulator

Manufacturer

Intersil Corporation

Datasheet

1.ISL9105.pdf (11 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

isl9105IRZ-T

Manufacturer:

Intersil

Quantity:

291

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600mA Low Quiescent Current 1.6MHz

High Efficiency Synchronous Buck

Regulator

ISL9105 is a 600mA, 1.6MHz step-down regulator that is

ideal for powering low-voltage microprocessors in handheld

devices such as PDAs and cellular phones. 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 of a

single Li+ cell, three NiMH cells or a regulated 5V input. It

has a guaranteed minimum output current of 600mA.

1.6MHz pulse-width modulation (PWM) switching frequency

allows using small external components. It has flexible

operation mode selection of forced PWM mode and low IQ

mode with typical 25μA quiescent current for highest light

load efficiency to maximize battery life.

The ISL9105 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 600mA

output current.

The ISL9105 offers a typical 216ms Power-On-Reset (POR)

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

When shutdown, ISL9105 discharges the output capacitor.

Other features include internal digital soft-start, enable for

power sequence, overcurrent protection, and thermal

shutdown.

The ISL9105 is offered in a 2mmx3mm 8 Ld DFN package

with 1mm maximum height. The complete converter

occupies less than 1cm

Ordering Information(to be updated)

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100% matte

tin plate termination finish, which are RoHS compliant and compatible

with both SnPb and Pb-free soldering operations. Intersil Pb-free

products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

ISL9105IRZ-T

PART NUMBER

(NOTE)

MARKING

PART

05Z

area.

-40 to +85 8 Ld 2x3 DFN L8.2x3

RANGE

TEMP.

(°C)

Data Sheet

PACKAGE

(Pb-free)

1-888-INTERSIL or 1-888-468-3774

DWG. #

PKG.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• High Efficiency Synchronous Buck Regulator with up to

• Selectable Forced PWM Mode and SKIP Mode

• 25μA Quiescent Supply Current in SKIP Mode

• 2.7V to 5.5V Supply Voltage

• 216ms POR Timer

• 3% Output Accuracy Over Temperature/Line/Load

• 600mA Guaranteed Output Current

• Less Than 1μA Logic Controlled Shutdown Current

• 100% Maximum Duty Cycle for Lowest Dropout

• Discharge Output Capacitor when Shutdown

• Internal Loop Compensation

• Internal Digital Soft-Start

• Peak Current Limit Protection, Short Circuit Protection

• Over-Temperature Protection

• Enable

• Small 8 Ld 2x3mm DFN

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Single Li-Ion Battery-Powered Equipment

• DSP Core Power

• PDAs and Palmtops

Pinout

95% Efficiency

February 13, 2007

All other trademarks mentioned are the property of their respective owners.

Intersil (and design) is a registered trademark of Intersil Americas Inc.

MODE

POR

VIN

(8 LD DFN)

TOP VIEW

ISL9105

PHASE

GND

RSI

ISL9105

FN6415.1

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