Datasheet

LXDC3EP series
Micro DC-DC converter
3
Dec 2014
4-2 Pin function
Pin Symbol I/O Function
1 EN Input
This is the ON/OFF control pin of the device. The device is in shutdown
mode when the voltage to this pin is below 0.4V. Pulling this pin above 1.2V
turns on the device with a soft start. This pin should not be left floating.
EN=H: Device ON, EN=L: Device OFF
2,3,5,6,9 GND
－
Ground pin
4 Vout Output
Regulated voltage output pin.
Apply output load between this pin and GND.
7 MODE Input
This is the operation mode select pin. This pin must not be left floating and
must be terminated.
Mode=H: Forced PWM mode
Mode=L: Power-Save mode
8 Vin Input
The Vin pin supplies current to the LXDC3EP internal regulator.
4-3 Functional Block Diagram
Gate
Driver
EA
Switching
Controller
Soft Start
Clock
UVLO
Thermal
Shutdown
GND
Cout
Cin
Embedded L
EN
Mode
Vin
Vout
Control IC
LXDC3EP
Current
Sense
OCP