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ISL6522BCB PDF预览

ISL6522BCB

更新时间: 2024-11-27 22:57:23
品牌 Logo 应用领域
英特矽尔 - INTERSIL 控制器
页数 文件大小 规格书
15页 451K
描述
Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

ISL6522BCB 数据手册

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ISL6522B  
®
Data Sheet  
April 4, 2005  
FN9150.1  
Buck and Synchronous Rectifier  
Features  
• Drives two N-Channel MOSFETs  
Pulse-Width Modulator (PWM) Controller  
The ISL6522B provides complete control and protection for a  
DC-DC converter optimized for high-performance  
microprocessor applications. It is designed to drive two  
N-Channel MOSFETs in a synchronous rectified buck topology.  
The ISL6522B integrates all of the control, output adjustment,  
monitoring and protection functions into a single package.  
• Operates from +5V or +12V input  
• Simple single-loop control design  
- Voltage-mode PWM control  
• Fast transient response  
- High-bandwidth error amplifier  
- Full 0–100% duty ratio  
The output voltage of the converter can be precisely  
regulated to as low as 0.8V, with a maximum tolerance of  
±1% over temperature and line voltage variations.  
• Excellent output voltage regulation  
- 0.8V internal reference  
The ISL6522B provides simple, single feedback loop, voltage-  
mode control with fast transient response. It includes a 200kHz  
free-running triangle-wave oscillator that is adjustable from  
below 50kHz to over 1MHz. The error amplifier features a  
15MHz gain-bandwidth product and 6V/µs slew rate which  
enables high converter bandwidth for fast transient perform-  
ance. The resulting PWM duty ratio ranges from 0-100%.  
- ±1% over line voltage and temperature  
• Overcurrent fault monitor  
- Does not require extra current sensing element  
- Uses MOSFETs r  
DS(ON)  
• Converter can source and sink current  
• Pre-Biased Load Start Up  
• Small converter size  
- Constant frequency operation  
- 200kHz free-running oscillator programmable from  
50kHz to over 1MHz  
The ISL6522B protects against overcurrent conditions by  
inhibiting PWM operation. The ISL6522B monitors the  
current by using the r  
of the upper MOSFET which  
DS(ON)  
eliminates the need for a current sensing resistor.  
• 14-lead SOIC package and 16-lead 5x5mm QFN Package  
• QFN Package  
Pinouts  
ISL6522B (SOIC)  
TOP VIEW  
- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat  
14  
13  
12  
11  
10  
9
RT  
OCSET  
SS  
1
2
3
4
5
6
7
VCC  
No Leads-Product Outline  
PVCC  
LGATE  
PGND  
BOOT  
UGATE  
PHASE  
- Near Chip-Scale Package Footprint; Improves PCB  
Efficiency and Thinner in Profile  
• Pb-Free Available (RoHS Compliant)  
COMP  
FB  
EN  
Applications  
• Power supply for Pentium , Pentium Pro, PowerPC and  
AlphaPC™ microprocessors  
8
GND  
®
®
ISL6522B (QFN)  
• FPGA Core DC/DC Converters  
TOP VIEW  
• Low-voltage distributed power supplies  
16 15 14 13  
SS  
COMP  
FB  
1
2
3
4
12 PVCC  
11 LGATE  
10 PGND  
EN  
9
BOOT  
5
6
7
8
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.  
1
Copyright © Intersil Americas Inc. 2004, 2005. All Rights Reserved. All other trademarks mentioned are the property of their respective owners.  
®
®
PowerPC is a trademark of IBM. AlphaPC™ is a trademark of Digital Equipment Corporation. Pentium is a registered trademark of Intel Corporation.  

ISL6522BCB 替代型号

型号 品牌 替代类型 描述 数据表
ISL6522BIBZ INTERSIL

完全替代

Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller
ISL6522BIBZ-T INTERSIL

完全替代

Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

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