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參數(shù)資料
| 型號： | STK740-470 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 5V/5A Single Output Separate Excitation Chopper Regulator(5V/5A單輸出獨(dú)立激發(fā)斬波調(diào)整器) |
| 中文描述： | 5V/5A單輸出獨(dú)立的勵(lì)磁調(diào)節(jié)斬波（5V/5A單輸出獨(dú)立激發(fā)斬波調(diào)整器） |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 136K |
| 代理商： | STK740-470 |
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Thick Film Hybrid IC
STK740-470
5V/5A Single Output Separate Excitation
Chopper Regulator
Ordering number:EN*6107
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
63099RM (KT) No.6107–1/10
1
12
46.6
41.2
1
2
(6.63)
11
×
2.54=27.94
3.6
0.5
2.54
8.5
4
0.4
2.9
1
Package Dimensions
unit:mm
4170-SIP28
[STK740-470]
SANYO : SIP-28
Preliminary
Overview
The STK740-470 is a separate-excitation step-down
chopper regulator hybrid IC for the secondstage circuit.
This IC incorporates in the package all the necessary
circuits for a chopper regulator including power switch,
error amplifier, soft start, shutdown type output short
protection, low-voltage malfunction prevention, on/off,
and snubber circuits. Therefore, external components
required are input and output capacitors and a choke coil
only and this allows this IC to be used to construct a
large-current (5A) chopper regulator as if a 3-pin regula-
tor were used. DC8V to 18V input voltage can be
handled and up to 5A of output current is supported.
Applications
Local power supply for the equipment of which input
rating is DC9V to 15V.
Features
Adoption of Sanyo IMST ; Insulated Metal Substrate
Technology, allows the circuit to be operated without
using a heat sink (see “No Fin Output Current Derat-
ing” chart in the page 6).
Typical efficiency of 90% at DC 12V input, 2.5A
output.
Fine adjustment of output voltage enable.
50 kHz operating frequency.
Low-R
ON
resistance power MOSFET adopted.
Low-V
F
Schottky barrier diode adopted.
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