SC1189 查看數據表（PDF） - Semtech Corporation
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SC1189 Datasheet PDF : 16 Pages
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SC1189
POWER MANAGEMENT
Pin Configuration
TOP VIEW
AGND
1
24
GATE1
2
23
LDOS1
3
22
LDOS2
4
21
VCC
5
20
PWRGD
6
19
LDOEN
7
18
CS-
8
17
CS+
9
16
PGNDH
10
15
DH
11
14
PGNDL
12
13
GATE2
LDOV
VID25MV
VID0
VID1
VID2
VID3
VOSENSE
EN
BSTH
BSTL
DL
(24 Pin SOIC)
Ordering Information
Device (1)
Package
Linear
Voltage
Temp
Range (TJ)
SC1189SWTR
SC1189SWTRT(2)
SO-24
1.25V/2.5V 0° to 125°C
Notes:
(1) Only available in tape and reel packaging. A reel
contains 1000 devices.
(2) Lead free product. This product is fully WEEE and
RoHS compliant.
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Pin Name
AGND
GATE1
LDOS1
LDOS2
VCC
PWRGD
LDOEN
CS-
CS+
PGNDH
DH
PGNDL
DL
BSTL
BSTH
EN (1)
VOSENSE
VID3 (1)
VID2 (1)
VID1 (1)
VID0 (1)
VID25MV (1)
LDOV
GATE2
Pin Function
Small Signal Analog and Digital Ground
Gate Drive Output LDO1
Sense Input for LDO1
Sense Input for LDO2
Input Voltage
Power Good Output, pulls low if VCC_CORE is outside valid range
LDO Supply Monitor.
Current Sense Input (negative)
Current Sense Input (positive)
Power Ground for High Side Switch
High Side Driver Output
Power Ground for Low Side Switch
Low Side Driver Output
Supply for Low Side Driver
Supply for High Side Driver
Logic low shuts down the converter, High or open for normal operation
Top end of internal feedback chain.
Programming Input (MSB)
Programming Input
Programming Input
Programming Input
Programming Input (LSB)
+12V for LDO section
Gate Drive Output LDO2
Note:
(1) All logic level inputs and outputs are open collector TTL compatible.
2007 Semtech Corp.
4
www.semtech.com
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