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參數(shù)資料
| 型號(hào)： | ISL6232 |
| 廠商： | Intersil Corporation |
| 英文描述： | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC -40 to 85 |
| 中文描述： | 高效率系統(tǒng)電源控制器，用于筆記本電腦 |
| 文件頁(yè)數(shù)： | 1/25頁(yè) |
| 文件大?。?/td> | 746K |
| 代理商： | ISL6232 |
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ISL6232
High Efficiency System Power Supply
Controller for Notebook Computers
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.
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.
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.
Features
Supply Voltage Range: 5.5V to 25V
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
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
5
μ
A 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
Dual Output Supplies for DSP, Memory, Logic and
Microprocessor
Telecom Systems, Network servers, and Storage
Ordering Information
PART
NUMBER*
TEMP.
RANGE (°C)
PACKAGE
PKG.
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.
Data Sheet
April 18, 2005
FN9116.0
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.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL6232CAZA-T | High Efficiency System Power Supply Controller for Notebook Computers |
| ISL6232CAZA | High Efficiency System Power Supply Controller for Notebook Computers |
| ISL6235 | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC -40 to 85 |
| ISL6235CA | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC -40 to 85 |
| ISL6244CR | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6232CA | 制造商:Intersil Corporation 功能描述:HI EFFICIENCY SYSTEM PWR SUPPLY CONTR. FOR NOTEBOOK COMPUTER - Rail/Tube |
| ISL6232CA-T | 制造商:Intersil Corporation 功能描述:HI EFFICIENCY SYSTEM PWR SUPPLY CONTR. FOR NOTEBOOK COMPUTER - Tape and Reel |
| ISL6232CAZ | 制造商:Intersil Corporation 功能描述:LEAD-FREE HI EFFICIENCY SYSTEM PWR SUPPLY CONTR FOR NOTEBOOK - Rail/Tube |
| ISL6232CAZA | 功能描述:熱插拔功率分布 W/ANEAL HI EFF SYSTM PWR SUPPLY CONTR RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| ISL6232CAZA-T | 功能描述:熱插拔功率分布 W/ANEAL HI EFF SYSTM PWR SUPPLY CONTR RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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