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ISL6520BCR PDF预览

ISL6520BCR

更新时间: 2024-11-27 22:57:23
品牌 Logo 应用领域
英特矽尔 - INTERSIL 开关控制器
页数 文件大小 规格书
10页 352K
描述
Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

ISL6520BCR 数据手册

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ISL6520B  
®
Data Sheet  
January 20, 2005  
FN9083.2  
Single Synchronous Buck Pulse-Width  
Modulation (PWM) Controller  
Features  
• Operates from +5V Input  
The ISL6520B makes simple work out of implementing a  
complete control scheme for a DC-DC stepdown converter.  
Designed to drive N-channel MOSFETs in a synchronous  
buck topology, the ISL6520B integrates the control, output  
adjustment and monitoring 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 ISL6520B 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  
• Small Converter Size  
- 300kHz Fixed Frequency Oscillator  
- Internal Soft Start  
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%.  
- 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  
Pinouts  
ISL6520B (8 LD SOIC)  
TOP VIEW  
• Pb-Free Available (RoHS Compliant)  
8
7
6
5
PHASE  
COMP/SD  
FB  
BOOT 1  
Applications  
UGATE  
GND  
2
3
• Power Supplies for Microprocessors  
- PCs  
LGATE 4  
VCC  
- Embedded Controllers  
• Subsystem Power Supplies  
ISL6520B (16 LD QFN)  
TOP VIEW  
- PCI/AGP/GTL+ Buses  
- ACPI Power Control  
- SSTL-2 and DDR SDRAM Bus Termination Supply  
• Cable Modems, Set Top Boxes, and DSL Modems  
16 15 14 13  
• DSP and Core Communications Processor Supplies  
• Memory Supplies  
BOOT  
UGATE  
GND  
NC  
1
2
3
4
12  
COMP/SD  
NC  
11  
10  
9
• Personal Computer Peripherals  
• Industrial Power Supplies  
FB  
NC  
• 5V-Input DC-DC Regulators  
5
6
7
8
• Low-Voltage Distributed Power Supplies  
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. 2003, 2005. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  

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SWITCHING CONTROLLER, 340kHz SWITCHING FREQ-MAX, PDSO8, PLASTIC, MS-012AA, SOIC-8