LED Driver Click Board

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LED Driver Click Board

Product Description

The LED Driver Click Board™  carries the MCP1662 high-voltage step-up voltage driver from Microchip. The LED Driver Click Board™ is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over PWM pin on the mikroBUS™ line.

MCP1662 MCU FEATURES

The MCP1662 device is a compact, space-efficient, fixed-frequency, non-synchronous step-up converter optimized to drive LED strings with a constant current from a two- or three-cell alkaline or lithium Energizer®, or NiMH/NiCd, or one-cell Lithium-Ion or Li-Polymer batteries.

The device integrates a 36V, 800 mW low-side switch, which is protected by the 1.3A cycle-by-cycle inductor peak current limit operation.

How Does The LED Driver Click Board™ Work?

The LED Driver Click Board™ has a power input and a PWM input, so the LED lights can be dimmed. It's a great choice for driving LED strips.

SPECIFICATIONS

PINOUT DIAGRAM

This table shows how the pinout on the LED Driver Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
NC	1	AN	PWM	16	PWM	PWM input
NC	2	RST	INT	15	NC
NC	3	CS	TX	14	NC
NC	4	SCK	RX	13	NC
NC	5	MISO	SCL	12	NC
NC	6	MOSI	SDA	11	NC
Power supply	+3.3V	7	3.3V	5V	10	+5V	Power supply
Ground	GND	8	GND	GND	9	GND	Ground

MAXIMUM RATINGS

Software Support

01 void systemInit()
02 {
03     TRISC = 0;                          // designate PORTC pins as output
04     LATC  = 0;                          // set PORTC to 0
05     PWM2_Init( 5000 );                  // Initialize PWM2 module at 5KHz
06 }
07 
08 void main()
09 {
10     systemInit();
11     currentDuty  = 0;
12     PWM2_Start();
13     PWM2_Set_Duty(currentDuty);
14 
15    while ( 1 )                         // Playing with Potentiometer P1 you can control current PWM duty cycle
16     {
17         currentDuty = ADC_Read(1) & 0x0000FFFF;         // Read 10 - bit ADC value and set newly acquired 8 - bit PWM duty
18         currentDuty = currentDuty / 4;
19         PWM2_Set_Duty(currentDuty );          // Set newly acquired duty
20     }
21 
22 }

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