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參數資料
| 型號： | SC1545 |
| 廠商： | Semtech Corporation |
| 英文描述： | 500mA SmartLDOTM With Power Up Signal Sequencing |
| 中文描述： | SmartLDOTM具有高達500mA的信號電時序 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 83K |
| 代理商： | SC1545 |
2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
500mA SmartLDO
Signal Sequencing
TM
With Power Up
SC1545
PRELIMINARY - January 17, 2000
1
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1545 was designed for instantly available moth-
erboard applications. As part of the Semtech family of
SmartLDO’s it provides additional control functions not
available in a standard LDO.
The device provides the capability to control three sep-
arate supplies. There is an on-board 500mA, 2.5V
LDO with current limit protection, and drive pins for an
N-channel MOSFET and a P-channel MOSFET. Inter-
nal logic circuitry ensures that the system starts up in a
controlled manner, and that the correct outputs are en-
abled during specific sequences of BF_CUT and SLP.
The LDO draws its power from the 5V standby supply,
and the N-channel MOSFET drive is derived from the
12V supply.
The SC1545 is available in the surface mount SO-8
package.
FEATURES
500mA LDO with Over Current Protection (OCP)
±2.5% LDO regulation over line, load and
temperature
Power sequencing for three supplies
APPLICATIONS
Instantly available motherboards
Embedded systems
Desktop computers
ORDERING INFORMATION
Part Number
(1)
Package
SC1545CS
SO-8
Note:
(1) Add suffix ‘TR’ for tape and reel packaging.
TYPICAL APPLICATION CIRCUIT
2.5V OUT
5V STANDBY
12V IN
BF_CUT
SLP
2.5V IN
2.5V OUT
3.3V IN
3.3V OUT
U1
SC1545
1
2
3
4
5
6
7
8
VO
GND
PDR
NDR
SLP
BF_CUT
12VIN
5VSTBY
C5
10uF
C6
1uF
C7
0.1uF
C1
2 x 100uF
Q1
Si4410
Q2
IRLMS6802
C2
100uF
C3
2 x 100uF
C4
100uF
相關PDF資料 |
PDF描述 |
|---|---|
| SC1545CS | 500mA SmartLDOTM With Power Up Signal Sequencing |
| SC1548CSKTRT | Linear FET Controller |
| SC1548CSK-X.XTR | Linear FET Controller |
| SC1548 | Linear Fet Controller |
| SC1548CSK-1.5TR | Linear Fet Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC-15-45 | 制造商:Altas 功能描述: |
| SC1545CS | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:500mA SmartLDOTM With Power Up Signal Sequencing |
| SC1545CS.TR | 制造商:Semtech Corporation 功能描述:LDO Regulator Pos 2.525V 0.5A T/R |
| SC1545CS-1.8TR | 制造商:Semtech Corporation 功能描述:LDO Regulator Pos 1.8V 0.5A 8-Pin SOIC T/R |
| SC1545CS-1.8TRT | 制造商:Semtech Corporation 功能描述:LDO Regulator Pos 1.8V 0.5A 8-Pin SOIC T/R |
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