Details

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BUY PCA9665D https://www.utsource.net/itm/p/9496441.html

Parameter	Symbol	Min	Typical	Max	Unit	Description
Supply Voltage	VCC	2.3	-	5.5	V	Operating supply voltage range
Output Current per Channel	IOUT	-	10	15	mA	Maximum output current per channel
PWM Resolution		-	12-bit	-	bits	Pulse Width Modulation resolution
PWM Frequency	Fpwm	-	1000	-	Hz	Programmable PWM frequency
Communication Interface		-	I2C	-		Supports standard and fast-mode I2C
Address Range	A0-A3	-	0x20 to 0x27	-	-	I2C address range
Operating Temperature	Toper	-40	-	85	掳C	Operating temperature range
Storage Temperature	Tstg	-65	-	150	掳C	Storage temperature range
Quiescent Current	IQ	-	50	-	渭A	Current consumption in standby mode
Output Type		-	Open-drain	-	-	Output configuration
Number of Channels	Nch	-	16	-	-	Number of PWM output channels

Instructions for Using PCA9665D

1. Power Supply:

   • Connect the VCC pin to a power supply within the range of 2.3V to 5.5V.
   • Connect the GND pin to the ground.

2. I2C Configuration:

   • Connect the SDA (Data) and SCL (Clock) pins to the I2C bus.
   • Set the I2C address using the A0, A1, A2, and A3 pins. The default address is 0x20 if all address pins are tied to GND.

3. Initialization:

   • Send a start condition followed by the I2C address and write command.
   • Write to the Mode register to configure the device (e.g., enable auto-increment for register writes).

4. PWM Configuration:

   • Write to the Prescaler register to set the PWM frequency.
   • Write to the LEDn registers to set the PWM duty cycle for each channel (n = 0 to 15).

5. Output Control:

   • The output channels are open-drain and can be connected to LEDs or other loads.
   • Ensure the load current does not exceed the maximum output current per channel (15mA).

6. Standby Mode:

   • To enter standby mode, write to the Mode register to disable the oscillator.
   • In standby mode, the quiescent current is reduced to approximately 50渭A.

7. Temperature Considerations:

   • Ensure the operating temperature is within the specified range (-40掳C to 85掳C).
   • For storage, keep the device within the storage temperature range (-65掳C to 150掳C).

8. Error Handling:

   • Monitor the I2C bus for any communication errors.
   • Check the status registers for any fault conditions or errors.

By following these instructions, you can effectively use the PCA9665D for controlling multiple PWM outputs in your application.

(For reference only)