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SP6123ACN. PDF预览

SP6123ACN.

更新时间： 2024-11-21 20:03:35
品牌 Logo 应用领域
西伯斯 - SIPEX /
页数 文件大小 规格书
16页 120K
描述
Analog Circuit,

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中文翻译

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SP6123ACN. 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
Reach Compliance Code：unknown风险等级：5.64
Base Number Matches：1

SP6123ACN. 数据手册

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®
SP6123  
Low Voltage, 8 Pin, Synchronous Buck Controller  
Ideal for 2A to 10A, Small Footprint, DC-DC Power Converters  
■ Optimized for Single Supply, 3V - 7V Applications  
■ High Efficiency: Greater Than 95% Possible  
1
2
3
4
8
7
6
5
BST  
GH  
GL  
SP6123  
■ Accurate Fixed 300kHz (SP6123) or 500kHz  
VCC  
(SP6123A) Frequency Operation  
SWN  
VFB  
GND  
8 Pin SOIC  
■ Fast Transient Response  
COMP  
■ Internal, 3ms, Soft Start Circuit  
■ Accurate 0.8V Reference Allows Low Output  
Voltages  
APPLICATIONS  
■ Resistor Programmable Output Voltage  
■ DSP  
■ Loss-less Current Limit with High Side RDS(ON)  
■ Microprocessor Core  
■ I/O & Logic  
Sensing  
■ Hiccup Mode Current Limit Protection  
■ Dual N-Channel MOSFET Synchronous Driver  
■ Quiescent Current: 500µA, 30µA in Shutdown  
■ 8-Pin Surface Mount Package  
■ Industrial Control  
■ Distributed Power  
■ Low Voltage Power  
DESCRIPTION  
The SP6123 is a fixed frequency, voltage mode, synchronous PWM controller designed to  
work from a single 5V or 3.3V input supply, providing excellent AC and DC regulation for high  
efficiency power conversion. Requiring only few external components, the SP6123 pack-  
aged in an 8-pin SOIC, is especially suited for low voltage applications where cost, small size  
and high efficiency are critical. The operating frequency is internally set to 300kHz (SP6123)  
or 500kHz (SP6123A), allowing small inductor values and minimizing PC board space. The  
SP6123 drives an all N-channel synchronous power MOSFET stage for improved efficiency  
and includes an accurate 0.8V reference for low output voltage applications.  
APPLICATION SCHEMATIC  
3V to 7V  
IN  
MBR0530  
C
IN  
680µF  
V
CBST  
1µF  
IN  
BST  
GH  
GL  
0.8V to 5.0V  
2A to 10A  
CB  
2.2µF  
V
FDS6890A  
L1  
CC  
(1.6V, 4A shown)  
SP6123A  
SWN  
GND  
V
OUT  
1.5µH  
V
COMP  
FB  
R1  
10k  
RZ  
15k  
C
C
C
OUT3  
1µF  
OUT1  
470µF  
OUT2  
470µF  
CP  
56pF  
CC  
4.7nF  
R2  
10k  
FDS6890A  
STPS2125U  
Rev. 1/15/02  
SP6123 Low Voltage, 8 Pin, Synchronous Buck Controller  
© Copyright 2002 Sipex Corporation  
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SP6123EN-L/TR SIPEX

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