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FAN6520BIMX 데이터시트(PDF) 1 Page - Fairchild Semiconductor

부품명 FAN6520BIMX
상세설명  Single Synchronous Buck PWM Controller
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제조업체  FAIRCHILD [Fairchild Semiconductor]
홈페이지  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

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©2006 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
February 2006
FAN6520B Rev. 1.0.3
FAN6520B
Single Synchronous Buck PWM Controller
Features
Accepts 1.5V to 5V for VIN
Output Range 0.8V to VIN
– 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
Small Converter Size
– 300kHz Fixed Frequency Oscillator
– Internal Soft-Start
– 8-Lead SOIC
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
ACPI Power Control
5V Input DC-DC Regulator
Description
The FAN6520B 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 synchro-
nous buck topology, the FAN6520B integrates the con-
trol, output adjustment, and monitoring functions into a
single 8-lead package.
The FAN6520B is easy to use, employs a single feed-
back 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 fre-
quency oscillator reduces design complexity, while bal-
ancing 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 FAN6520B is rated for operation from 0° to +70°C
with the FAN6520BI rated from –40° to +85°C.
Ordering Information
Part Number
Temperature Range
Package
Packing
FAN6520BM
0°C to 70°C
SOIC-8
Rails
FAN6520BMX
0°C to 70°C
SOIC-8
Tape and Reel
FAN6520BIM
–40°C to 85°C
SOIC-8
Rails
FAN6520BIMX
–40°C to 85°C
SOIC-8
Tape and Reel


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