Datasheet > ISL9105

ISL9105

更新时间： 2024-11-06 14:56:15

品牌	Logo	应用领域
瑞萨 - RENESAS		/
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描述
600mA Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator

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ISL9105 数据手册

DATASHEET

ISL9105

FN6415

Rev 2.00

March 28, 2008

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

Features

• High Efficiency Synchronous Buck Regulator with up to

95% Efficiency

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 for 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 for use of 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.

• 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

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.

• Internal Digital Soft-Start

• Peak Current Limit Protection, Short Circuit Protection

• Over-Temperature Protection

• Enable

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

with 1mm maximum height. The complete converter

occupies less than 1cm area.

• Small 8 Ld 2mmx3mm DFN

• Pb-free (RoHS Compliant)

Applications

Ordering Information

TEMP.

RANGE

(°C)

• Single Li-Ion Battery-Powered Equipment

• DSP Core Power

PART NUMBER

(NOTE)

PART

MARKING

PACKAGE

(Pb-free)

PKG.

DWG. #

• PDAs and Palmtops

ISL9105IRZ-T*

05Z

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

*Please refer to TB347 for details on reel specifications.

Pinout

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets; molding compounds/die attach materials

and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which

is 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.

ISL9105

(8 LD DFN)

TOP VIEW

VIN

PHASE

POR

GND

MODE

RSI

FN6415 Rev 2.00

March 28, 2008

Page 1 of 11

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与ISL9105相关器件

型号	品牌	获取价格	描述	数据表
ISL9105IRZ-T	INTERSIL	获取价格	600mA Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator
ISL9106	INTERSIL	获取价格	1.2A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9106	RENESAS	获取价格	1.2A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9106IRZ	INTERSIL	获取价格	1.2A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9106IRZ-T	INTERSIL	获取价格	1.2A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9107	INTERSIL	获取价格	1.5A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9107	RENESAS	获取价格	1.5A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9107IRZ-T	INTERSIL	获取价格	1.5A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9108	INTERSIL	获取价格	1.5A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator
ISL9108	RENESAS	获取价格	1.5A 1.6MHz Low Quiescent Current High Efficiency Synchronous Buck Regulator

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