Datasheet
VIN
GND
VOUT
SW
ENFB
1
2
3
6
5
4
2x2SON6pinout
DRVPACKAGE
(TOP VIEW)
EXPOSED
THERMAL PAD
VIN
GND
VOUT
SW
EN
FB
1
2
3
8
7
6
4 5
SGND
PG
SOT-238pinout
DCNPACKAGE
(TOP VIEW)
TPS62120
TPS62122
www.ti.com
SLVSAD5 –JULY 2010
DEVICE INFORMATION
PIN ASSIGNMENTS
PIN FUNCTIONS
PIN
I/O DESCRIPTION
NAME DRV NO. DCN NO.
VIN 5 1 PWR V
IN
power supply pin.
GND 6 2 PWR GND supply pin.
EN 4 3 IN Pulling this pin to high activates the device. Low level shuts it down. This pin must be terminated.
SW 1 7 OUT This is the switch pin and is connected to the internal MOSFET switches. Connect the inductor to
this terminal. Do not tie this pin to VIN, VOUT or GND.
FB 3 5 IN This is the feedback pin for the regulator. Connect external resistor divider to this pin.
SGND – 4 IN This pin is available in TPS62120 only.
Open drain output which is turned on during shutdown mode (EN = 0) or VIN is below the UVLO
threshold. It connects the SGND pin to GND via an internal MOSFET with typical 370Ω R
DS(ON)
.
When the device is enabled (EN = 1), this output is high impedance. To discharge the output
capacitor during shutdown mode, connect this pin to VOUT (output capacitor) or leave it open.
VOUT 2 8 IN This pin must be connected to the output capacitor.
PG – 6 OUT This pin is available in TPS62120 only.
Open drain power good output. Connect this terminal via a pull up resistor to a voltage rail up to
5.5V or leave it open. This pin can sink 500µA.
Exposed - Exposed Thermal Pad available only in DRV package option. This pad must be connected to
Thermal GND.
PAD
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