TB6674PG, TB6674FG, and TB6674FAG are stepping motor driver ICs with MOS output transistors.

The ICs can control two-phase stepping motor forward and reverse by bipolar driving. They have a power-saving circuit and a standby circuit.

Features

They are similar substituting products of TA7774PG, TA7774FG, and TA7774FAG. Both products have same packages and same pin assignments.

One-chip two-phase bipolar stepping motor driver (including two bridge drivers)

Power saving operation is available.

Standby operation is available. Current consumption ≤20 μA (typ.)

Built-in punch-through current restriction circuit for system ability and noise suppression.

TTL-compatible inputs INA, INB, PS, and Vs2B terminals

ON resistance PS = L : 2.9 Ω(Typ.)

PS = H: 7.9 Ω(Typ.)

High driving ability.

: IO (START)350 mA (MAX.) : VS1 ENABLE

: IO (HOLD)100 mA (MAX.) : VS2 ENABLE

: IO (START)100 mA (MAX.) : VS1 ENABLE

: IO (HOLD)50 mA (MAX.) : VS2 ENABLE

Typical PKG DIP16 pin, HSOP16 pin, SSOP16 pin

GND terminal = HEAT SINK

Process :BiCD0.6 (30 V)

Over current shutdown circuit (ISD).

Thermal shutdown circuit (TSD).

Undervoltage lockout circuit (UVLO).

Pull-down resistance for input terminal (250 kΩ).