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PDF ( 数据手册 , 数据表 ) SI-8008HD

零件编号 SI-8008HD
描述 DC-to-DC Step-Down Converter
制造商 Sanken
LOGO Sanken LOGO 


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SI-8008HD 数据手册, 描述, 功能
SI-8008HD
DC-to-DC Step-Down Converter
Features and Benefits
5.5 A output current supplied in a small, surface mount
power package
High efficiency: 83% at VIN= 15 V, IO= 3.0 A,VO= 5 V
Requires only seven external components (optional soft
start requires an additional capacitor)
Oscillation circuit built-in (frequency 150 kHz typical)
Constant-current mode overcurrent protection circuit and
overtemperature protection circuit built-in
Soft start function built-in (can be implemented as an
on/off function; output-off state at low level)
Low current consumption during output-off state
Package: TO263-5
Description
The SI-8008HD DC voltage regulator is a DC-to-DC buck
convertor that attains an oscillation frequency of 150 kHz,
and has an integrated miniaturized choke coil, allowing it to
serve as a small, high efficiency power supply in a compact
TO-263 package.
The internal switching regulator function provides high
efficiency switching regulation without any need for adjustment.
The device requires only six external support components. The
optional soft start function requires an additional capacitor.
Optional on/off control can be performed using a transistor.
The SI-8008HD includes overcurrent and overtemperature
protection circuits.
Applications include:
DVD recorder
FPD TV
Telecommunications equipment
Office automation equipment, such as printers
On-board local power supply
Output voltage regulator for second stage of SMPS
(switched mode power supply)
Not to scale
27469.059
Functional Block Diagram
VIN 1 IN
C1 C4
PReg
Overcurrent
Protection
SW 2
L1
Di
FMB-G16L
(Sanken)
VOU
C2
5 SS On/Off
Soft Start
C3
Reset
Osc
Comparator
Error
Amplifier
Latch and
Driver
Overtemperature
Protection
ADJ 4
R1
R2
GND
3
Reference
Voltage







SI-8008HD pdf, 数据表
SI-8008HD
DC-to-DC Step-Down Converter
TAPE AND REEL SPECIFICATION
Ø1.5
+0.1
–0.0
4.0 ±0.10
2.0 ±0.10
B
0.4 ±0.05
AA
16.0
10.6
Ø1.5 MIN
B
3.9
4.9
View A-A
View B-B
Material: conductive polysterene
MCPoaacmtekbreieat rli:n<Cne1ornmwdCPmuiodactcmothikvvsbeeeemtrpri1eno<0anly0se1surmtmrewemrmdeidnl0teoeh.n3vsgemtmrhm1eo0afa0stbauloperveenedgft0lho.o3orfmotafmpcaeavbitoyve floor of pocket
Pocket position relative to sprocket hole measured to true position of pocket
10 sprocket hole pitch cumulative ±0.2 mm
Pocket center and pocket hole center ±0.3 mm
Surface resistivity < 107 Ω / cm2
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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