This board offers a 2 amp buck (step-down) point-of-load switch-mode regulator.
Features:
- Wide 3.6 to 18VDC input voltage range
- Output adjustable from 2.5 to 15VDC
- 380KHz switching freq.
- 2 amp output capability (with adequate heatsinking)
- Dimensions: approx. 43 x 15 x 15 mm (L x W x H).
- Ideal for use with solderless breadboard mounting.
- Shipped with snap-off pins unfitted…need soldering.
- Made in England.
PINOUTS:-
- +Vin 16 +Vin
- EN 15 0V
- 0V 14 0V
- 0V 13 0V
- 0V 12 0V
- 0V 11 0V
- No connect 10 FB
- +Vout 9 +Vout
(the FB pin can be used to connect an external voltage feedback circuit)
TO CALCULATE R2 VALUES FOR OTHER DESIRED VOUT
VOLTAGES….
R2 (K) =((Vout/0.8) -1) x 10 E.G for….
15V R2=178K
12V R2=140K
9V R2=102K5
5V R2=52K5
3V3 R2=31K3
( use nearest preferred value 0.1% resistor or compromise on accuracy)
INPUT VOLTAGE RANGE=3.6 to 18VDC
OUTPUT VOLTAGE RANGE=0.8 to 16VDC
N.B. UNIT IS NORMALLY SUPPLIED WITH VR1 FITTED (R2 NOT FITTED)
FOR FIXED VOLTAGE, REMOVE VR1 AND FIT R2 PER DATASHEET
OR REMOVE VR1 AND FIT EXTERNAL RESISTOR OR PRESET BETWEEN
PINS 9 AND 10