TPS2220A, TPS2223A
TPS2224A, TPS2226A
SLVS428B 鈥?MAY 2002 鈥?REVISED SEPTEMBER 2004
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FUNCTIONAL BLOCK DIAGRAM OF TPS2220A
S2
3.3 V
See Note A
CS
S1
S3
5V
S4
S5
5V
12 V
See Note B
S7
See Note A
CS
AVPP
AVCC
AVCC
S6
12 V
See Note B
Control Logic
SHDN
RESET
DATA
CLOCK
LATCH
GND
Thermal Limit
Current Limit
UVLO
OC
POR
NOTES: A. Current sense
B. The two 12-V pins must be externally connected.
PIN ASSIGNMENTS
TPS2226A
DB PACKAGE
(TOP VIEW)
5V
5V
DATA
CLOCK
LATCH
NC
12V
AVPP
AVCC
AVCC
AVCC
GND
NC
RESET
3.3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
5V
NC
NC
NC
NC
SHDN
12V
BVPP
BVCC
BVCC
BVCC
NC
OC
3.3V
3.3V
5V
5V
DATA
CLOCK
LATCH
NC
12V
AVPP
AVCC
AVCC
GND
RESET
TPS2220A
DB OR PWP PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
NC
NC
NC
SHDN
12V
NC
NC
NC
NC
OC
NC
3.3V
NC - No internal connection
8