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ISL6520ACBZA-T PDF预览

ISL6520ACBZA-T

更新时间: 2024-11-27 22:57:23
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英特矽尔 - INTERSIL 控制器
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11页 378K
描述
Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

ISL6520ACBZA-T 数据手册

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ISL6520A  
®
Data Sheet  
December 28, 2004  
FN9016.3  
Single Synchronous Buck Pulse-Width  
Modulation (PWM) Controller  
Features  
• Operates from +5V Input  
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.  
• 0.8V to V Output Range  
IN  
- 0.8V Internal Reference  
- ±1.5% Over Line Voltage and Temperature  
• Drives N-Channel MOSFETs  
• Simple Single-Loop Control Design  
- Voltage-Mode PWM Control  
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.  
• Fast Transient Response  
- High-Bandwidth Error Amplifier  
- Full 0% to 100% Duty Cycle  
• Lossless, Programmable Overcurrent Protection  
- Uses Upper MOSFET’s r  
DS(ON)  
The error amplifier features a 15MHz gain-bandwidth  
product and 8V/µs slew rate which enables high converter  
bandwidth for fast transient performance. The resulting PWM  
duty cycles range from 0% to 100%.  
• Small Converter Size  
- 300kHz Fixed Frequency Oscillator  
- Internal Soft Start  
- 8 Ld SOIC or 16Ld 4x4mm QFN  
Protection from overcurrent conditions is provided by  
• QFN Package:  
monitoring the r  
of the upper MOSFET to inhibit PWM  
DS(ON)  
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat  
No Leads - Package Outline  
operation appropriately. This approach simplifies the  
implementation and improves efficiency by eliminating the  
need for a current sense resistor.  
- Near Chip Scale Package footprint, which improves  
PCB efficiency and has a thinner profile  
Pb-Free Available (RoHS Compliant)  
Ordering Information  
TEMP.  
RANGE (°C)  
PKG.  
DWG. #  
Applications  
PART NUMBER  
ISL6520ACB  
PACKAGE  
8 Ld SOIC  
• Power Supplies for Microprocessors  
- PCs  
0 to 70  
0 to 70  
M8.15  
ISL6520ACBZ  
(Note 1)  
8 Ld SOIC (Pb-free) M8.15  
- Embedded Controllers  
• Subsystem Power Supplies  
- PCI/AGP/GTL+ Buses  
ISL6520ACBZA-T  
(Note 1)  
0 to 70  
8 LdSOICTapeand M8.15  
Reel (Pb-free)  
- ACPI Power Control  
ISL6520AIB  
-40 to 85 8 Ld SOIC  
M8.15  
- SSTL-2 and DDR SDRAM Bus Termination Supply  
ISL6520AIBZ (Note 1)  
ISL6520ACR  
-40 to 85 8 Ld SOIC (Pb-free) M8.15  
• Cable Modems, Set Top Boxes, and DSL Modems  
• DSP and Core Communications Processor Supplies  
• Memory Supplies  
0 to 70  
0 to 70  
16 Ld 4x4mm QFN L16.4x4  
ISL6520ACRZ (Note 1)  
16 Ld 4x4mm QFN L16.4x4  
(Pb-free)  
ISL6520AIR  
-40 to 85 16 Ld 4x4mm QFN L16.4x4  
• Personal Computer Peripherals  
ISL6520AIRZ (Note 1)  
-40 to 85 16 Ld 4x4mm QFN L16.4x4  
(Pb-free)  
• Industrial Power Supplies  
• 5V-Input DC-DC Regulators  
ISL6520EVAL1  
NOTE:  
Evaluation Board  
• Low-Voltage Distributed Power Supplies  
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.  
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  
1
All other trademarks mentioned are the property of their respective owners.  

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