參數(shù)資料
型號： ISL6520A
廠商： Intersil Corporation
英文描述： Adjustable Precision Shunt Regulator 3-SOT-23 -40 to 125
中文描述： 單同步降壓脈寬調(diào)制（PWM）控制器
文件頁數(shù)： 1/11頁
文件大?。?/td> 380K
代理商： ISL6520A
1
FN9016.3
ISL6520A
Single Synchronous Buck Pulse-Width
Modulation (PWM) Controller
The ISL6520A makes simple work out of implementing a
complete control and protection scheme for a DC-DC
stepdown converter. Designed to drive N-channel MOSFETs
in a synchronous buck topology, the ISL6520A integrates the
control, output adjustment, monitoring and protection
functions into a single 8-Lead package.
The ISL6520A provides simple, single feedback loop,
voltage-mode control with fast transient response. The
output voltage can be precisely regulated to as low as 0.8V,
with a maximum tolerance of
±
1.5% over temperature and
line voltage variations. A fixed frequency oscillator reduces
design complexity, while balancing typical application cost
and efficiency.
The error amplifier features a 15MHz gain-bandwidth
product and 8V/
μ
s slew rate which enables high converter
bandwidth for fast transient performance. The resulting PWM
duty cycles range from 0% to 100%.
Protection from overcurrent conditions is provided by
monitoring the r
DS(ON)
of the upper MOSFET to inhibit PWM
operation appropriately. This approach simplifies the
implementation and improves efficiency by eliminating the
need for a current sense resistor.
Features
Operates from +5V Input
0.8V to V
IN
Output Range
- 0.8V Internal Reference
- ±1.5% Over Line Voltage and Temperature
Drives N-Channel MOSFETs
Simple Single-Loop Control Design
- Voltage-Mode PWM Control
Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Cycle
Lossless, Programmable Overcurrent Protection
- Uses Upper MOSFET’s r
DS(ON)
Small Converter Size
- 300kHz Fixed Frequency Oscillator
- Internal Soft Start
- 8 Ld SOIC or 16Ld 4x4mm QFN
QFN Package:
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat
No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
Pb-Free Available (RoHS Compliant)
Applications
Power Supplies for Microprocessors
- PCs
- Embedded Controllers
Subsystem Power Supplies
- PCI/AGP/GTL+ Buses
- ACPI Power Control
- SSTL-2 and DDR SDRAM Bus Termination Supply
Cable Modems, Set Top Boxes, and DSL Modems
DSP and Core Communications Processor Supplies
Memory Supplies
Personal Computer Peripherals
Industrial Power Supplies
5V-Input DC-DC Regulators
Low-Voltage Distributed Power Supplies
Ordering Information
PART NUMBER
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL6520ACB
0 to 70
8 Ld SOIC
M8.15
ISL6520ACBZ
(Note 1)
0 to 70
8 Ld SOIC (Pb-free) M8.15
ISL6520ACBZA-T
(Note 1)
0 to 70
8 Ld SOIC Tape and
Reel (Pb-free)
M8.15
ISL6520AIB
-40 to 85
8 Ld SOIC
M8.15
ISL6520AIBZ (Note 1)
-40 to 85
8 Ld SOIC (Pb-free) M8.15
ISL6520ACR
0 to 70
16 Ld 4x4mm QFN
L16.4x4
ISL6520ACRZ (Note 1)
0 to 70
16 Ld 4x4mm QFN
(Pb-free)
L16.4x4
ISL6520AIR
-40 to 85
16 Ld 4x4mm QFN
L16.4x4
ISL6520AIRZ (Note 1)
-40 to 85
16 Ld 4x4mm QFN
(Pb-free)
L16.4x4
ISL6520EVAL1
Evaluation Board
NOTE:
1. 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.
Data Sheet
December 28, 2004
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
相關(guān)PDF資料
PDF描述
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ISL6526ACRZ Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6526AIBZ Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL6520ACB 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
ISL6520ACBR5148 制造商:Rochester Electronics LLC 功能描述:- Bulk
ISL6520ACB-T 功能描述:電壓模式 PWM 控制器 Single Synch Buck RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
ISL6520ACBZ 功能描述:電壓模式 PWM 控制器 VER OF ISL6520ACB RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
ISL6520ACBZA 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR)
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