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16x16 Constant Current LED Driver HT16D33B 28SSOP

US$0.81

Out of stock

Product ID

HT16D33B-28SSOP

Description

The HT16D33A and HT16D33B are high accuracy constant current and memory mapping LED display controller/drivers. The maximum display capacity is 256 patterns composed of 16 rows and 16 commons. Using software controlled PWM circuitry, the devices can generate a 256-step Gray Scale (PWM data) and 256 LED illumination levels.

The devices provide constant current output control using software-controlled for each row output terminal. A serial interface is provided to allow the devices to receive instructions for its command mode and data mode. Only three lines are required for device interfacing to a host controller. The display capacity can be easily extended by cascading the devices thus expanding its application possibilities. The devices are compatible with most microcontrollers offering easy interfacing via their two serial interfaces, an I²C interface (HT16D33B) or an SPI 3-wire serial interface (HT16D33A).

NOTE

The product image is for showing the product appearance, the pin count shown may not match the product pin count.

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Select	Quantity	Discount	Unit price
	1-9	-	US$0.81
	10-99	15%	US$0.69
	100-499	25%	US$0.61
	500-999	35%	US$0.53
	1000-4999	40%	US$0.49
	5000+	42%	US$0.47

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16x16 Constant Current LED Driver HT16D33B 28SSOP

Features

Logic Operating Voltage: 2.7V - 5.5V
LED Driver Operating Voltage: 4.5V - 5.5V
LED Display: 20 combinations of output pins (CA0 - CA19), can plan three matrix display mode

Matrix Type1: two groups of 9 rows and 10 commons LED Matrix. (Pins of the corresponding range: (CA0~CA9) + (CA10~CA19))
Matrix Type2: 12 rows and 12 commons. (Pins of the corresponding range: CA1~CA15)
Matrix Type3: 16 rows and 16 commons. (Pins of the corresponding range: CA1~CA19)

LED Data RAM1(Max.): 16 × 16 × 8 × (2) bits = (512) × 8 bits for Gray mode
LED Data RAM2(Max.): 16 × 16 × 4 × (2) bits = (256) × 8 bits for Fade mode
LED Data RAM3(Max.): 16 × 2 × 8 × (2) bits = (64) × 8 bits for LED On/Off Control
Integrated 2.4MHz RC oscillator
2 frame memory for animations
256-level global brightness scale
Binary scale mode or Gray scale mode
Global blinking or fade function
Automatic scroll function: left/right
Internal Current Reference Control
Support max. 48mA Sink Constant Current
16-level Maximum current setup selection
Current matching to ±3%
Over temperature protection circuit
Open/short protection circuit for each dot
Interface : I²C (HT16D33B) or SPI 3-wire (HT16D33A)
Cascade function for extend applications

Resources

IC: Holtek HT16D33A/HT16D33B, 16×16 Constant Current LED Driver, including datasheet, package dimensions, etc.)
Application Note: AN0568EN, HT16D33A/B and HT16D31A/B LED Driver Application Guidelines