Datasheet

10
13
PGND
SW
TPS51216
OC
ZC
XCON
15
VBST
12 V5IN
PWM
9
REFIN
TRIP
Delay
20 PGOOD
Control Logic
UDG-10135
10 mA
+
+
V
REFIN
+20%
+
+
8
VDDQSNS
+
+
18
14 DRVH
11 DRVL
t
ON
One-
Shot
UV
OV
V
REFIN
–32%
16S5
Soft-Start
+
NOC
+
8 R
6VREF Reference
R
7GND
17S3
5VTTREF
1VTTSNS
4 VTTGND
3 VTT
+
+
+
+
2 VLDOIN
7 R
R
VTT Discharge
VTTREF Discharge
On-Time
Discharge Type
Selection
15 mA
19 MODE
V
REFIN
+8/16 %
V
REFIN
–8/16 %
+
+
VDDQ
Discharge
V5OK
+
4.4 V/3.9 V
UVP
OVP
TPS51216
SLUSAB9A –NOVEMBER 2010–REVISED APRIL 2013 www.ti.com
FUNCTIONAL BLOCK DIAGRAM
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