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부품번호 | STK740-470 기능 |
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기능 | 5V/5A Single Output Separate Excitation Chopper Regulator | ||
제조업체 | Sanyo Semicon Device | ||
로고 | |||
Ordering number:EN*6107
Thick Film Hybrid IC
STK740-470
5V/5A Single Output Separate Excitation
Chopper Regulator
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.
Package Dimensions
unit:mm
4170-SIP28
[STK740-470]
46.6
41.2
3.6
(6.63)
1
2.54
12
0.5
11×2.54=27.94
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-RON resistance power MOSFET adopted.
• Low-VF Schottky barrier diode adopted.
8.5
0.4
2.9
SANYO : SIP-28
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.
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
Test Circuit
STK740-470
12 11 10 9 8 7 6 5 4 3 2 1
DC
INPUT
C1
L1
FB C2
ON/OFF
Vo adjust
OUTPUT
(5V)
GND
C1 : 47µF/25V (OS capacitor)
C2 : 1000µF/16V×2
L1 : 30µH
FB : Ferrite-bead core
GND
Overvoltage Protection Circuit
In a constant-voltage power supply circuit output voltage may generally exceed the stipulated rating (equivalent to input
voltage) when the circuit is broken down or the IC and the printed circuit board is wrongly soldered. Therefore overvoltage
protection circuit is recommended to use to minimize the damages caused by the overvoltage.
Sample the overvoltage protection circuit
DC
INPUT
FUSE
Regulator
OUTPUT
SCR
GND
CR
GND
No.6107–4/10
4페이지 70
60
50
40
30
20
10
0
0
4.0
3.0
2.0
STK740-470
No Fin ∆Tc vs.Output Current
VIN=15V
VIN=12V
VIN=9V
123 4 5
Output Current Io[A]
Power Dissipation vs Output Current
6
VIN=15V
VIN=12V
VIN=9V
1.0
0.0
01 2 3 4 5 6
Output Current Io[A]
No.6107–7/10
7페이지 | |||
구 성 | 총 10 페이지수 | ||
다운로드 | [ STK740-470.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
STK740-470 | 5V/5A Single Output Separate Excitation Chopper Regulator | Sanyo Semicon Device |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |