Tape & Reel
Tape & Reel
Connect the inductor and the Schottky diode to this pin.
This is the switch pin and is connected to the drain of the
internal power MOSFET.
This is the feedback pin of the device. Connect this pin to
the external voltage divider to program the desired output
This is the enable pin of the device. Pulling this pin to
ground forces the device into shutdown mode reducing
the supply current to less than 1µA. This pin should not
be left floating and needs to be terminated.
Supply voltage pin
Absolute Maximum Ratings
Over operating free-air temperature (unless otherwise noted) (Note 1)
Supply Voltage on VIN (Note 2)
Voltages on FB, EN (Note 2)
Switch Voltage on SW (Note 2)
Continuous Power Dissipation SOT23-5
at TA = 25°C
-0.3 to +7.0
-0.3 to VIN +0.3
TJ Operating Junction Temperature
-40 to +150
TSTG Storage Temperature Range
-65 to +150
Maximum Lead Temperature for Soldering 10
Note 1: Stresses beyond those listed under absolute maximum ratings may cause permanent
damage to the device. These are stress ratings only, and functional operation of the
device at these or any other conditions beyond those indicated under recommended
operating conditions is not implied. Exposure to absolute-maximum-rated conditions for
extended periods may affect device reliability.
Note 2: All voltage values are with respect to network ground terminal.
http://www.union-ic.com Rev.05 Feb.2014