Datasheet > ISL6237IRZ-T

ISL6237IRZ-T

更新时间： 2024-09-24 04:58:39

品牌	Logo	应用领域
英特矽尔 - INTERSIL		电脑控制器
页数	文件大小	规格书
34页	2973K
描述
High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

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ISL6237IRZ-T 数据手册

ISL6237

Data Sheet

March 16, 2007

FN6418.1

High-Efficiency, Quad-Output, Main Power

Supply Controllers for Notebook

Computers

Features

• Wide Input Voltage Range 5.5V to 25V

• Dual Fixed 1.05V/3.3V and 1.5V/5.0V Outputs or

Adjustable 0.7V to 5.5V (SMPS1) and 0.5V to 2.5V

(SMPS2), ±1.5% Accuracy

The ISL6237 dual step-down, switch-mode power-supply

(SMPS) controller generates logic-supply voltages in

battery-powered systems. The ISL6237 includes two

pulse-width modulation (PWM) controllers, 5V/3.3V and

1.5V/1.05V. The output of SMPS1 can also be adjusted from

0.7V to 5.5V. The SMPS2 output can be adjusted from 0.5V to

2.5V by setting REFIN2 voltage. This device features a linear

regulator providing 3.3V/5V, or adjustable from 0.7V to 4.5V

output via LDOREFIN. The linear regulator provides up to

100mA output current with automatic linear-regulator

bootstrapping to the BYP input. When in switchover, the LDO

output can source up to 200mA. The ISL6237 includes

on-board power-up sequencing, power-good (POK_) outputs,

digital soft-start, and internal soft-stop output discharge that

prevents negative voltages on shutdown.

• 1.7ms Digital Soft-Start and Independent Shutdown

• Fixed 3.3V/5.0V, or Adjustable Output 0.7V to 4.5V,

±1.5% (LDO): 200mA

• 2.0V Reference Voltage

• Constant ON-TIME Control with 100ns Load-Step

Response

• Selectable Switching Frequency

• r

Current Sensing

DS(ON)

• Programmable Current Limit with Foldback Capability

• Selectable PWM, Skip or Ultrasonic Mode

• BOOT Voltage Monitor with Automatic Refresh

• Independent POK1 and POK2 Comparators

• Soft-Start with Pre-Biased Output and Soft-Stop

• Independent ENABLE

Constant on-time PWM control scheme operates without

sense resistors and provides 100ns response to load

transients while maintaining a relatively constant switching

frequency. The unique ultrasonic pulse-skipping mode

maintains the switching frequency above 25kHz, which

eliminates noise in audio applications. Other features include

pulse skipping, which maximizes efficiency in light-load

applications, and fixed-frequency PWM mode, which reduces

RF interference in sensitive applications.

• High Efficiency - Up to 97%

• Very High Light Load Efficiency (Skip Mode)

• 5mW Quiescent Power Dissipation

Ordering Information

• Thermal Shutdown

TEMP.

• Extremely Low Components Count

PART

NUMBER

PART

MARKING

RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

• Pb-Free Plus Anneal Available (RoHS Compliant)

ISL6237IRZ

(Note)

ISL6237 IRZ -40 to +100 32 Ld 5x5 QFN L32.5x5B

Applications

ISL6237IRZ-T ISL6237 IRZ -40 to +100 32 Ld 5x5 QFN L32.5x5B

(Note) Tape and Reel

• Notebook and Sub-Notebook Computers

• PDAs and Mobile Communication Devices

• 3-Cell and 4-Cell Li+ Battery-Powered Devices

• DDR1, DDR2, and DDR3 Power Supplies

• Graphic Cards

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.

• Game Consoles

• Telecommunication

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.

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ISL6237IRZ-T 替代型号

型号	品牌	替代类型	描述	数据表
ISL6237IRZ	INTERSIL	完全替代	High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

与ISL6237IRZ-T相关器件

型号	品牌	获取价格	描述	数据表
ISL62381	INTERSIL	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62381	RENESAS	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62381_11	INTERSIL	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62381C	RENESAS	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62381C	INTERSIL	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62381CHRTZ	RENESAS	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62381CHRTZ	INTERSIL	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62381HRTZ	INTERSIL	获取价格	3MHz, BiMOS Microprocessor Operational Amplifiers with MOSFET Input/CMOS Output
ISL62381HRTZ	RENESAS	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute
ISL62382	INTERSIL	获取价格	High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Compute

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