SC1214TSTR View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC1214TSTR' PDF : 8 Pages View PDF
POWER MANAGEMENT
Pin Configurations
Top View
DRN1
TG1
BST1
CO1
NC
VPN2
VIN2
VREG2
BG2
PGND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
(20-Pin TSSOP)
PGND
BG1
VREG1
VIN1
VPN1
NC
CO2
BST2
TG2
DRN2
SC1214
Ordering Information
Device
SC1214TSTR(1)
SC1214TSTRT(1)(2)
Package
TSSOP-20
TSSOP-20
Temp. Range( Tj)
0 - 125°C
0 - 125°C
Note:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
(2) Lead free product. This product is fully WEEE and RoHS
compliant.
Pin Descriptions
Pin#
2,12
1,11
3, 13
18,8
4,14
16,6
10, 20
19,9
17,7
Pin Name
Pin Function
TG1, TG2
Output gate drive for the switching (top) MOSFET.
DRN1, DRN2
The power phase node (or switching node) of the synchronous buck converter. This pin can be
subjected to a negative spike up to -VREG relative to PGND without affecting operation.
BST1, BST2
Bootstrap pin. A capacitor is connected between BST and DRN pins to develop the floating
bootstrap voltage for the high-side MOSFET. The capacitor value is typically 1µF (ceramic).
VREG1,VREG2 LDO output. Decouple with 1µF to 4.7µF (ceramic) with lead length no more than 0.2" (5mm).
CO1, CO2
Logic level PWM input signal to the SC1214 supplied by external controller. An internal
50kohm resistor is connected from this pin to PGND.
VPN1, VPN2
Virtual Phase Node. Connect an RC between this pin and the output sense point to Enable
Combi-Sense TM operation. See the Typical Application Circuit.
PGND
Ground. Keep these pins close to the synchronous MOSFETs source.
BG1, BG2
Output gate drive for the synchronous (bottom) MOSFET.
VIN1,VIN2
Supply power for low gate drive, LDO and the internal Combi-Sense TM circuitry. Connect to
input power rail of the converter.
2005 Semtech Corp.
6
www.semtech.com
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