Details

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BUY TLC5947RHBR https://www.utsource.net/itm/p/5909795.html
24-Channel, 12-Bit PWM LED Driver with

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	Operating	3.15	-	5.5	V
Output Current per Channel	IOUT	Per channel	-	120	-	mA
Maximum Output Voltage	VOUT	High level output	-	VCC-0.4	-	V
PWM Frequency	fPWM	Typical	-	625	-	kHz
Data Input Frequency	fDMC	Maximum	-	-	30	MHz
Power Dissipation	PD	Continuous	-	-	700	mW
Operating Temperature	Toper	Range	-40	-	85	掳C
Storage Temperature	Tstg	Range	-65	-	150	掳C

Instructions for TLC5947RHBR

1. Power Supply Connection:

   • Connect the VCC pin to a stable power supply within the range of 3.15V to 5.5V.
   • Ensure that adequate decoupling capacitors are placed close to the power pins to minimize noise and transient effects.

2. Data Input (DMCIN, DMCCLK, DMCBLANK):

   • Use the DMCIN pin for serial data input.
   • DMCCLK should be driven with a clock signal up to 30MHz for shifting data into the device.
   • The DMCBLANK pin is used to enable or disable all outputs simultaneously.

3. PWM Control:

   • The device supports a PWM frequency of up to 625kHz.
   • Configure the PWM settings according to the application requirements for precise control over LED brightness or other loads.

4. Output Configuration:

   • Each output can source up to 120mA of current.
   • Outputs are configured as constant current sources; ensure external components like LEDs are rated appropriately.

5. Thermal Considerations:

   • Ensure the operating temperature remains between -40掳C and 85掳C.
   • For applications where high power dissipation is expected, consider heat sinking or additional cooling methods.

6. Storage and Handling:

   • Store the device in environments where temperatures do not exceed the storage temperature range (-65掳C to 150掳C).
   • Follow ESD handling guidelines to prevent damage during installation and use.

(For reference only)