Datasheet

Charge
Pump
Driver
Current
Limit
Thermal
Sense
UVLO
8-ms
Deglitch
IN
EN
EN
OUT
ILIM_SEL
ILIM0
ILIM1
FAULT
GND
Current
Sense
(TPS2555)
(TPS2554)
2/3
5
5
8/9
4
7
6
10
1
R
DIS
Charge
Pump
Driver
Current
Limit
Thermal
Sense
UVLO
8-ms
Deglitch
IN
EN
EN
OUT
ILIM_SEL
ILIM0
ILIM1
FAULT
GND
Current
Sense
(TPS2555)
(TPS2554)
2/3
5
5
8/9
4
7
6
10
1
R
DIS
TPS2554
TPS2555
SLVSAM0 – JUNE 2011 www.ti.com
DEVICE INFORMATION
Pin Functions
PIN
I/O DESCRIPTION
NAME TPS2554 TPS2555
EN 5 - I Enable input, logic high turns on power switch (TPS2554).
EN - 5 I Enable input, logic low turns on power switch (TPS2555).
GND 1 1 Ground connection; connect externally to PowerPAD™.
2, 3 2, 3 I Input voltage; connect a 100-nF, or greater, ceramic capacitor
IN
from IN to GND as close to the device as possible.
10 19 O Active-low, open-drain output, asserted during overcurrent or
FAULT
over-temperature conditions.
OUT 8, 9 8, 9 O Power-switch output
7 7 I External resistor used to set current-limit threshold when
ILIM0
ILIM_SEL = LO
6 6 I External resistor used to set current-limit threshold when
ILIM1
ILIM_SEL = HI
4 4 I Logic-level input that selects between ILIM0 and ILIM1
ILIM_SEL
current-limit threshold setting
Internally connected to GND; used to heat-sink the device to the
PowerPAD™ – –
circuit board traces. Connect PowerPAD™ to GND pin externally.
TPS2554/TPS2555 Functional Block Diagram
6 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s): TPS2554 TPS2555