SLVS514J – APRIL 2004 – REVISED DECEMBER 2008
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Terminal Functions (TPS2042B and TPS2052B)
TERMINAL
D, DGN, and DRB PACKAGES
NAME
EN1
EN2
EN1
EN2
GND
IN
OC1
OC2
OUT1
OUT2
PowerPAD™
TPS2042B
3
4
-
-
1
2
8
5
7
6
-
TPS2052B
-
-
3
4
1
2
8
5
7
6
-
I
O
O
O
O
I
I
I
I
Enable input, logic low turns on power switch IN-OUT1
Enable input, logic low turns on power switch IN-OUT2
Enable input, logic high turns on power switch IN-OUT1
Enable input, logic high turns on power switch IN-OUT2
Ground
Input voltage
Overcurrent, open-drain output, active low, IN-OUT1
Overcurrent, open-drain output, active low, IN-OUT2
Power-switch output, IN-OUT1
Power-switch output, IN-OUT2
Internally connected to GND; used to heat-sink the part to the circuit board
traces. Should be connected to GND pin.
I/O
DESCRIPTION
Functional Block Diagram (TPS2042B and TPS2052B)
OC1
GND
EN1
(See Note B)
Driver
Charge
Pump
(See Note A)
CS
UVLO
OUT1
Current
Limit
Thermal
Sense
Deglitch
(See Note A)
IN
Charge
Pump
Driver
EN2
(See Note B)
Thermal
Sense
Note A: Current sense
Note B: Active low (ENx) for TPS2042B; Active high (ENx) for TPS2052B
Deglitch
CS
OUT2
Current
Limit
OC2
6
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