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8-bit Constant-Current LED Driver with Operating Voltage of 3.3 V

The TB62725 series is comprised of constant-current drivers designed for LEDs and LED displays. The output current value can be set using an external resistor.

As a result, all outputs will have virtually the same current levels.

This driver incorporates a 8-bit constant-current output, a 8-bit shift register, a 8-bit latch and a gate circuit.

These drivers have been designed using the Bi-CMOS process.

Features

? Output current capability and number of outputs: 90 mA × 8 outputs

? Constant current range: 2~80 mA

? Application output voltage:

0.7 V (output current 2~80 mA)

0.4 V (output current 2~40 mA)

? For anode-common LEDs

? Input signal voltage level: 3.3-V CMOS level (Schmitt trigger input)

? Maximum output terminal voltage: 17 V

? Serial data transfer rate: 20 MHz (max, cascade connection)

? Operating temperature range Topr = ?40~85°C

? Package:

Type P: DIP16-P-300-2.54A

Type F: SSOP16-P-225-1.00A

Type FN: SSOP16-P-225-0.65B

? Package and pin layout: Pin layout and functionality are similar to those of the TB62705. (Each characteristic value is different.)

? Constant-current error accuracy (all outputs on)