Datasheet

Charge
Pump
Driver
UVLO
Current
Limit
Thermal
Sense
IN
GND
EN
ILIM
OUT
FAULT
CS
Reverse
Voltage
Comparator
-
+
Current
Sense
Note A: TPS255xpartsenterconstantcurrentmode
duringcurrentlimitcondition; TPS255x-1 partslatchoff
(Note A)
4-ms
Deglitch
8-msDeglitch
TPS2552, TPS2553
TPS2552-1, TPS2553-1
SLVS841E –NOVEMBER 2008– REVISED FEBRUARY 2012 www.ti.com
DEVICE INFORMATION
Pin Functions
PIN
I/O DESCRIPTION
NAME TPS2552DBV TPS2553DBV TPS2552DRV TPS2553DRV
EN 3 – 4 – I Enable input, logic low turns on power switch
EN – 3 – 4 I Enable input, logic high turns on power switch
GND 2 2 5 5 Ground connection; connect externally to
PowerPAD
Input voltage; connect a 0.1 μF or greater
IN 1 1 6 6 I ceramic capacitor from IN to GND as close to the
IC as possible.
Active-low open-drain output, asserted during
FAULT 4 4 3 3 O overcurrent, overtemperature, or reverse-voltage
conditions.
OUT 6 6 1 1 O Power-switch output
External resistor used to set current-limit
ILIM 5 5 2 2 O threshold; recommended 15 kΩ ≤ R
ILIM
≤ 232
kΩ.
Internally connected to GND; used to heat-sink
PowerPAD
– – PAD PAD the part to the circuit board traces. Connect
™
PowerPAD to GND pin externally.
Add -1 for Latch-Off version
FUNCTIONAL BLOCK DIAGRAM
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Product Folder Link(s): TPS2552 TPS2553 TPS2552-1 TPS2553-1