Datasheet > ISL8501IRZ

ISL8501IRZ

更新时间： 2024-11-15 11:12:55

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
19页	841K
描述
Triple Output Controller with 1A Standard Buck PWM and Dual LDOs

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ISL8501IRZ 数据手册

ISL8501

Data Sheet

July 12, 2007

FN6500.1

Triple Output Controller with 1A Standard

Buck PWM and Dual LDOs

Features

• Standard Buck Controller with Integrated Switching Power

MOSFET and Dual LDOs

The ISL8501 is a high-performance, triple output controller

that provides a single, high frequency power solution for a

variety of point of load applications. The ISL8501 integrates

a 1A standard buck PWM controller and switching MOSFET

with two 500mA LDOs.

• Integrated Boot Diode

• Input Voltage Range

- Fixed 5V ±10%

- Variable 6V to 25V

• PWM Output Voltage Adjustable from 0.6V to 20V with

Continuous Output Current up to 1A

The PWM controller in the ISL8501 drives an internal

switching N-Channel power MOSFET and requires an

external Schottky diode to generate an output voltage from

0.6V to 20V. The integrated power switch is optimized for

excellent thermal performance up to 1A of output current.

The standard buck input voltage range supports a fixed 5V

or variable 6V to 25V range. The PWM regulator switches at

a fixed frequency of 500kHz and utilizes simple voltage

mode control with input voltage feed forward to provide

flexibility in component selection and minimize solution size.

Protection features include overcurrent, undervoltage, and

thermal overload protection integrated into the IC. The

ISL8501 power good signal output indicates loss of

regulation on the PWM output.

• Voltage Mode Control with Voltage Feed Forward

• Fixed 500kHz Switching Frequency

• Externally Adjustable Soft-Start Time

• Output Undervoltage Protection

• Dual LDO Adjustable Options

- LDO1, 0.6V to 4.2V . . . . . . . . . . . . . . . . . . . . . . 500mA

- LDO2, 0.6V to 4.2V . . . . . . . . . . . . . . . . . . . . . . 500mA

• Individual Enable Inputs

• Two PGOOD Outputs (PWM and both LDOs)

• Overcurrent Protection

• Thermal Overload Protection

The ISL8501 features two adjustable LDO regulators using

internal PMOS transistors as pass devices. Separate enable

pins (EN_LDO1, EN_LDO2) control each LDO output. A

single power good signal output indicates loss of regulation

on either of the two LDO outputs. Independent overcurrent

and thermal fault shutdown monitors are integrated into the

LDO section.

• Internal 5V LDO regulator

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• General Purpose

• WLAN Cards-PCMCIA, Cardbus32, MiniPCI Cards-

Compact Flash Cards

ISL8501 is available in a small 4mmx4mm Quad Flat No-

Lead (QFN) package.

• Hand-Held Instruments

Pinout

ISL8501

Ordering Information

PART

(24 LD QFN)

TOP VIEW

NUMBER

(Note)

PART

TEMP.

PACKAGE

(Pb-free)

PKG.

DWG. #

MARKING RANGE (°C)

ISL8501IRZ* 85 01IRZ

-40 to +85 24 Ld 4x4 QFN L24.4x4D

*Add “-T” suffix for tape and reel

24 23 22 21 20 19

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.

FB_LDO1

VOUT1

VIN

VIN_LDO1

PHASE

BOOT

PVCC

GND

VIN_LDO2

VOUT2

FB_LDO2

10 11 12

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

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

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

12 3 4 5 6 7...19

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ISL8501IRZ 替代型号

型号	品牌	替代类型	描述	数据表
ISL8501IRZ-T	RENESAS	功能相似	1A SWITCHING CONTROLLER, 550kHz SWITCHING FREQ-MAX, PQCC24, 4 X 4 MM, ROHS COMPLIANT, PLAS

与ISL8501IRZ相关器件

型号	品牌	获取价格	描述	数据表
ISL8501IRZ-T	RENESAS	获取价格	1A SWITCHING CONTROLLER, 550kHz SWITCHING FREQ-MAX, PQCC24, 4 X 4 MM, ROHS COMPLIANT, PLAS
ISL8502	INTERSIL	获取价格	2.5A Synchronous Buck Regulator with Integrated MOSFETs
ISL8502A	INTERSIL	获取价格	2A Synchronous Buck Regulator with Integrated MOSFETs
ISL8502AEVAL1Z	INTERSIL	获取价格	2A Synchronous Buck Regulator with Integrated MOSFETs
ISL8502AIRZ	INTERSIL	获取价格	2A Synchronous Buck Regulator with Integrated MOSFETs
ISL8502AIRZ-T	RENESAS	获取价格	2A Synchronous Buck Regulator with Integrated MOSFETs; QFN24; Temp Range: -40° to
ISL8502IRZ	RENESAS	获取价格	2A Synchronous Buck Regulator with Integrated MOSFETs; QFN24; Temp Range: -40° to
ISL8502IRZ	INTERSIL	获取价格	2.5A Synchronous Buck Regulator with Integrated MOSFETs
ISL8502IRZ-T	RENESAS	获取价格	2A Synchronous Buck Regulator with Integrated MOSFETs; QFN24; Temp Range: -40° to
ISL85033	INTERSIL	获取价格	Wide VIN Dual Standard Buck Regulator With 3A/3A Coutinuous Output Current

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