Datasheet

Thermal
Sense
Driver
Current
Limit
UVLO
CS
Driver
Current
Limit
CS
Thermal
Sense
Power Switch
GND
EN1
IN1
EN2
OC1
OUT1
OUT2
OC2
Deglitch
Deglitch
Thermal
Sense
Driver
Current
Limit
UVLO
CS
Driver
Current
Limit
CS
Thermal
Sense
Charge
Pump
Power Switch
GND
EN3
IN2
EN4
OC3
OUT3
OUT4
OC4
Deglitch
Deglitch
VCC
Selector
Note A: Current sense
Note B: Active low (ENx
) for TPS2044B; Active high (ENx) for TPS2054B
(See Note A)
(See Note A)
(See Note A)
(See Note A)
(See Note B)
(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 3. Functional Block Diagram (TPS2044B and TPS2054B)
10 Copyright © 2010–2011, Texas Instruments Incorporated