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SC1172CSW bảng dữ liệu(PDF) 3 Page - Semtech Corporation

tên linh kiện SC1172CSW
Giải thích chi tiết về linh kiện  PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER WITH LOW DROPOUT REGULATOR CONTROLLER
PDF  12 Pages
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nhà sản xuất  SEMTECH [Semtech Corporation]
Trang chủ  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

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PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER WITH LOW DROPOUT
REGULATOR CONTROLLER
SC1172/3
© 1999 SEMTECH CORP.
October 25, 1999
652 MITCHELL ROAD NEWBURY PARK CA 91320
3
Note:
(1) All logic level inputs and outputs are open
collector TTL compatible.
PIN DESCRIPTION
Pin
Pin Name
Pin Function
1
AGND
Small Signal Analog and Digital Ground
2
NC
No connection
3
NC
No Connection
4
LDOS
Sense Input for LDO
5
VCC
Input Voltage
6
OVP
High Signal out if V
O>setpoint +20%
7
PWRGOOD
(1)
Open collector logic output, high if V
O
within 10% of setpoint
8
CS-
Current Sense Input (negative)
9
CS+
Current Sense Input (positive)
10
PGNDH
Power Ground for High Side Switch
11
DH
High Side Driver Output
12
PGNDL
Power Ground for Low Side Switch
13
DL
Low Side Driver Output
14
BSTL
Supply for Low Side Driver
15
BSTH
Supply for High Side Driver
16
EN
(1)
Logic low shuts down the converter;
High or open for normal operation.
17
VOSENSE
Top end of internal feedback chain
18
VID4
(1)
Programming Input (MSB)
19
VID3
(1)
Programming Input
20
VID2
(1)
Programming Input
21
VID1
(1)
Programming Input
22
VID0
(1)
Programming Input (LSB)
23
LDOV
+12V for LDO section
24
GATE
Gate Drive Output LDO
Top View
(24 Pin SOIC)
NC
AGND
OVP
NC
VCC
LDOS
CS-
PWRGOOD
PGNDL
CS+
DH
PGNDH
LDOV
GATE
VID3
VID0
VID2
VID1
VOSENSE
DL
EN
BSTL
BSTH
VID4
2
1
6
3
5
4
8
7
12
9
11
10
23
24
19
22
20
21
17
13
16
14
15
18



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