Datasheet

LXDC3EP series
Micro DC-DC converter
10
Dec 2014
10. Measurement Data
Micro DC-DC Converter evaluation board (P2LX0457B)
Measurement setup
The enable switch has three positions.
1. When it is toggled “ON”, the device starts operation.
2. When it is toggled “OFF”, the device stops operation and shuts down.
3. When it is set to the middle of “ON” and “OFF”, the EN pin becomes floating and can have an external voltage
applied through the EN terminal pin on the EVB. If you don’t apply an external voltage to the EN pin, the
enable switch should not to be set to the middle position.
The mode switch has three states (PWM, PFM/PWM and Open).
1. When it is shorted to “PWM” side, the device operates PWM forced mode.
2. When it is shorted to “PFM/PWM” side, the device operates PFM/PWM automatic mode.
3. When it is set to open, the mode pin becomes floated and can be applied an external voltage through the
Mode terminal pin on the EVB. If you don’t apply external voltage to Mode pin, the mode switch should not to
be set to the middle position.
Enable SW
VIN
VIN_S
GND
VOUT_S
A
VOUT
GND_S
V
GND_S
Load
V
GND
A
Mode SW