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參數(shù)資料
| 型號： | FAN6520A |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Single Synchronous Buck PWM Controller |
| 中文描述： | 單同步降壓PWM控制器 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 580K |
| 代理商： | FAN6520A |
www.fairchildsemi.com
REV. 1.0.2 8/26/04
Features
Output Range 0.8V to V
– 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 Over-current Protection
– Uses Upper MOSFET’s R
Small Converter Size
– 300kHz Fixed Frequency Oscillator
– Internal Soft-Start
– 8-Lead SOIC
IN
DS(ON)
Applications
Power Supplies for PC Subsystems and Peripherals
MCH, GTL, and AGP Supplies
Cable Modems, Set Top Boxes, and DSL Modems
DSP, Memory
Low-Voltage Distributed Power Supplies
General Description
The FAN6520A 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 FAN6520A integrates the control, output
adjustment, monitoring and protection functions into a single
8-lead package.
The FAN6520A is easy to use, employs a single feedback
loop, and 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. The error amplifier features a 15MHz gain-
bandwidth product and an 8V/μs slew rate which enables
high converter bandwidth for fast transient performance.
The resulting PWM duty cycles range from 0% to 100%.
The IC monitors the drop across the upper MOSFET and
inhibits PWM operation appropriately to protect against
over-current conditions. This approach simplifies the
implementation and improves efficiency by eliminating
the need for a current sense resistor.
The FAN6520A is rated for operation from 0° to +70°C with
the FAN6520AI rated from –40° to +85°C.
FAN6520A
Single Synchronous Buck PWM Controller
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FAN6520AIM | Single Synchronous Buck PWM Controller |
| FAN6520AIMX | Single Synchronous Buck PWM Controller |
| FAN6520AM | Single Synchronous Buck PWM Controller |
| FAN6520AMX | Single Synchronous Buck PWM Controller |
| FAN6550M | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN6520A WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN6520A_06 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Single Synchronous Buck PWM Controller |
| FAN6520AIM | 功能描述:電壓模式 PWM 控制器 ANG FG SynchBuck Regulator- 8ld RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(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 |
| FAN6520AIMX | 功能描述:電壓模式 PWM 控制器 ANG FG SynchBuck Regulator- 8ld RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(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 |
| FAN6520AM | 功能描述:電壓模式 PWM 控制器 Single Synchronous Buck PWM Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(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 |
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