PSU RT8462 LED CHAIN 0.4 amp boost regulator

This board offers a comprehensive solution for driving a LED chain.

Features:

1. Wide 5-36VDC input voltage range.
2. 2-60V LED chain drive.
3. Programmable switching frequency.
4. LED current resistor-programmed.
5. Dimensions: approx.45.5 x 33.5 x 10 mm (L x W x H).
6. Has over-voltage protection.
7. Easy dimming control via PWM, analog voltage or external potentiometer.
8. Smoothed drive…..so suitable for photographic/ robot vision application.
9. Convenient JST XH and PH connectors.
10. M3 mounting positions
11. Made in England.

PINOUTS:-

P1                        P2                        P3

1 +Vled                      1 conin                       1 +Vin

2 0V                            2 DCTL                      2 0V

3 +Vin                        3 0V

(P1,P2,P3  pin 1 is the square pad)

(R6, R5 potential divider set output overvoltage shutoff to 46.6 V)

CONIN ACTIVE RANGE=0.4 TO 2.4 V (MIN TO MAX BRIGHTNESS)

(Analog or PWM input to P2 pin1)

N.B. Led string max voltage for this board=45VDC

LED chain current(Max.)=0.19/R3

or R3=0.19/LED chain current(Max.)

so for….

LED chain current(Max.)     R3

20mA           9.5 ohms

30mA           6.4 ohms

150mA          1.27 ohms

380mA         0.5 ohms

A 4u7 16V.W. X7R 0805 capacitor is added to board underside between pins 2 , 3 of P2