Datasheet > ISL6232CAZA

ISL6232CAZA

更新时间： 2024-09-23 22:28:23

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
25页	743K
描述
High Efficiency System Power Supply Controller for Notebook Computers

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ISL6232CAZA 数据手册

ISL6232

Data Sheet

April 18, 2005

FN9116.0

High Efficiency System Power Supply

Controller for Notebook Computers

Features

• Supply Voltage Range: 5.5V to 25V

The ISL6232 is a high efficiency, quad output controller

optimized for converting battery, wall adapter or network DC

input voltage into system supply voltages required for

portable applications. The ISL6232 includes two PWM

controllers generating 0.8V to 5.5V, or fixed 5V and 3.3V

outputs. It also features 5V and 3.3V always linear regulators

with up to 100mA output current.

• 3.3V and 5V Fixed or Adjustable Outputs from 0.8V to

5.5V

• 5V, 3.3V/100mA Always Linear Regulators

• Out of Phase Operation Reduces the ESR Requirement of

the Input Capacitors

• ±1.5% Output Voltage Accuracy over Temperature

• Fixed 300kHz Current Mode Control Architecture

• Accurate Current Sensing or DCR Current Sensing

• Internal Soft-Start and Soft-Stop Output Discharge

• Selectable Power-up Sequence

ISL6232 uses constant frequency current mode PWM

control with out of phase operation for reducing the input

ripple current and the ESR requirement of the input

capacitors. Over 95% efficiency is achieved through

synchronous rectification and dual PWM/Skip mode

architecture. High light load efficiency with skip mode

extends the battery life in system standby or shutdown

mode. The 5V and 3.3V always linear regulators take their

inputs from battery or ac adapter; and, to further improve

efficiency, their outputs are switched to the 5V or 3.3V

outputs from switching regulators when 5V or 3.3V is

available. Ultrasonic pulse skipping mode maintains

switching frequency above 25kHz to eliminate the audio

noise for high light load efficiency, and fixed frequency PWM

operation mode reduces the RF interference in sensitive

applications. External loop compensation is used to optimize

the transient response with optimized external components.

An accurate current sensing resistor in series with an output

inductor, or DC resistance of the inductor is used to sense

the output current of the current ramp signal, and

overcurrent protection. A peak current detecting scheme is

used for overcurrent protection and to prevent the inductor

from saturation.

• Selectable Forced PWM, Pulse Skipping, and Ultrasonic

Pulse Skipping Mode (25kHz min)

• Peak Overcurrent Limit Prevents Inductor Saturation

• Overvoltage Protection, Undervoltage Shutdown

• Power Good Output

• Thermal shutdown

• 5µA Shutdown Current

• Integrated Bootstrap Schottky Diodes

• 3.5mW Quiescent Power Dissipation

• Pb-Free Available (RoHS Compliant)

Applications

• Notebook, Sub-notebook, and Tablet Computers

• 2-4 cell Li-Ion Battery-Powered Devices

The ISL6232 has internal soft-start to control the inrush

current. The soft-stop feature avoids negative output voltage

for undervoltage protection, overcurrent protection, and

shutdown by discharging output through an internal switch,

and by damping the inductor current. The ISL6232 also

features overvoltage protection, power-up sequences, power

good output, and thermal shutdown. It has quiescent power

dissipation as low as 3.5mW.

• Dual Output Supplies for DSP, Memory, Logic and

Microprocessor

• Telecom Systems, Network servers, and Storage

Ordering Information

PART

TEMP.

PKG.

NUMBER*

RANGE (°C)

PACKAGE

DWG. #

ISL6232CAZA

(Note 1)

-10° to 100°

28 Ld QSOP

(Pb-free)

M28.15

NOTE: Intersil Pb-free 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.

*Add “-T” for Tape and Reel.

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

1-888-INTERSIL or 1-888-352-6832 | 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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与ISL6232CAZA相关器件

型号	品牌	获取价格	描述	数据表
ISL6232CAZA-T	INTERSIL	获取价格	High Efficiency System Power Supply Controller for Notebook Computers
ISL6235	INTERSIL	获取价格	Advanced Triple PWM Only Mode and Dual Linear Power Controller for Portable Applications
ISL6235CA	INTERSIL	获取价格	Advanced Triple PWM Only Mode and Dual Linear Power Controller for Portable Applications
ISL6235CA	ROCHESTER	获取价格	SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO24, PLASTIC, SSOP-24
ISL6235CA-T	ROCHESTER	获取价格	SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO24, PLASTIC, SSOP-24
ISL6235CA-T	RENESAS	获取价格	SWITCHING CONTROLLER, 345kHz SWITCHING FREQ-MAX, PDSO24, PLASTIC, SSOP-24
ISL6236	INTERSIL	获取价格	High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers
ISL6236	RENESAS	获取价格	High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers
ISL6236A	INTERSIL	获取价格	High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers
ISL6236A	RENESAS	获取价格	High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

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