DESCRIPTION

The µPD16835A is a monolithic quad H bridge driver IC that employs a CMOS control circuit and a MOS FET output circuit. Because it uses MOS FETs in its output stage, this driver IC consumes less power than conventional driver ICs that use bipolar transistors.

FEATURES

• Four H bridge circuits employing power MOS FETs

• Current-controlled 64-step micro step driving

• Motor control by serial data (8 bytes x 8 bits) (original oscillation: 4-MHz input)

Data is input with the LSB first.

EVR reference setting voltage: 100 to 250 mV (@VREF = 250 mV) ... 4-bit data input (10-mV step)

Chopping frequency: 32 to 124 kHz ... 5-bit data input (4-kHz step)

Original oscillation division or internal oscillation selectable

Number of pulses in 1 VD: 0 to 252 pulses ... 6 bits + 2-bit data input (4 pulses/step)

Step cycle: 0.25 to 8191.75 µs ... 15-bit data input (0.25- µs step)

• 3-V power supply. Minimum operating voltage: 2.7 V (MIN.)

• Low current consumption IDD: 3.0 mA (MAX.), IDD (RESET): 100 µA (MAX.), IMO(RESET): 1.0 µA (MAX.)

• 38-pin plastic shrink SOP (7.62 mm (300))