www.ti.com
TPS2220A, TPS2223A
TPS2224A, TPS2226A
SLVS428B 鈥?MAY 2002 鈥?REVISED SEPTEMBER 2004
FUNCTIONAL BLOCK DIAGRAM OF TPS2223A, TPS2224A and TPS2226A (see Note A)
Power
Inputs
3.3V
Power
Inputs
5V
3.3 V
3.3 V
13
14
S2
CS
S5
S3
S6
CS
See Note B
S4
17
18
See Note B
S1
9
10
AVCC
AVCC
1
5V
2
5V
24
5V
BVCC
BVCC
Power Outputs
See Note C
12 V
Power
Inputs
12V
See Note D
7
S8
S9
See Note B
CS
S7
8
AVPP
S10
12 V 20
See Note C
S12
S13
See Note B
CS
S11
Discharge
Element
19
BVPP
S14
Control Logic
21
12
3
4
5
SHDN
RESET
DATA
CLOCK
LATCH
GND
See Note C
Current Limit
Thermal Limit
11
15
UVLO
OC
POR
NOTES: A.
B.
C.
D.
Diagram shown for 24-pin DB package.
Current sense
The two 12-V pins must be externally connected.
No connections for TPS2223A.
7