Rev. P05

13

VPN12AD02-FU

VOUT Voltage Setting in Constant Voltage Mode:

VOUT =

(

.

VOUT

GND

FBL

FBH

FIG.29 VOUT Voltage Setting in Constant Voltage Mode

Input Voltage UVLO and Current Limitation:

Input under voltage shutdown levels EN/INUVLO can both be defined through an external

resistor divider. The two inputs (IIN1, IIN2) can be used to limit the Input current. IINmax. If the

input current limitation is not used, it needs to short IIN1 and IIN2 to VIN and short RIN.

Following are the equations and figure for these protections. 10kΩ is suggested for R2.

UVth =

R1

R2

(

+

1

.

IINmax =

FIG.30 Input Voltage/Current Protection