Datasheet

N/C
N/C
TRIP
EN
PGOOD N\C VBST N/C
32 31 30 29 28 27 26 25 24 23 22 21
LL LL LL LL LL LL LL LL
33
34
35
36
37
38
39
40
VFB
RF
MODE
VDD
1 2 3 4 5 6 7 8 9 10 11 12
20
19
18
17
16
15
14
13
TPS53315RGF
GND1
PGND
VREG
GND2
PGND PGND PGND PGND PGND PGND
VIN VIN
LL
LL
LL
LL
LL
VIN
VIN
VIN
TPS53315
SLUSAE6 –DECEMBER 2010 www.ti.com
PIN DESCRIPTION
PIN FUNCTIONS
PIN
I/O/P
(1)
DESCRIPTION
NAME NO.
EN 36 I Enable pin.
GND1 1 G GND for controller
GND2 4 G GND for half-bridge
16
17
18
19
20
21
LL 22 B Output of converted power. Connect this pin to the output Inductor.
23
24
25
26
27
28
Soft-start and skip/CCM selection. Connect a resistor to select soft-start time using Table 1. The soft-start
MODE 39 I
time is detected and stored into internal register during start-up.
29
31
N/C No connection
33
34
(1) I=Input, O=Output, B=Bidirectional, P=Supply, G=Ground
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Product Folder Link(s): TPS53315