Datasheet

Thermal
Sense
Driver
Current
Limit
UVLO
CS
Driver
Current
Limit
CS
Thermal
Sense
GND
EN1
IN1
EN2
OC1
OUT1
OUT2
OC2
Deglitch
Deglitch
Driver
Current
Limit
CS
Thermal
Sense
Charge
Pump
GND
IN2
EN3
OUT3
OC3
Deglitch
VCC
Selector
UVLO
(See Note A)
Note A: Current sense
Note B: Active low (ENx
) for TPS2043B; Active high (ENx) for TPS2053B
(See Note A)
(See Note A)
(See Note B)
(See Note B)
(See Note B)
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
SLVS514L –JUNE 2010–REVISED JUNE 2011 www.ti.com
Figure 2. Functional Block Diagram (TPS2043B and TPS2053B)
8 Copyright © 2010–2011, Texas Instruments Incorporated