TB6674PG/FG/FAG TOSHIBA BiCD Integrated Circuit Silicon Monolithic TB6674PG, TB6674FG, TB6674FAG Stepping Motor Driver IC TB6674PG, TB6674FG, and TB6674FAG are stepping motor TB6674PG 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. TB6674FG One-chip two-phase bipolar stepping motor driver (including two bridge drivers) Power saving operation is available. Standby operation is available. Current consumption 20 A (typ.) Built-in punch-through current restriction circuit for system reliability and noise suppression. TTL-compatible inputs INA, INB, PS, and Vs2B terminals ON resistance PS = L : 2.9 (Typ.) TB6674FAG PS = H: 7.9 (Typ.) High driving ability. <TB6674PG/FG> : I 350 mA (MAX.) : V ENABLE O (START) S1 : I 100 mA (MAX.) : V ENABLE O (HOLD) S2 <TB6674FAG> : I 100 mA (MAX.) : V ENABLE O (START) S1 : I 50 mA (MAX.) : V ENABLE O (HOLD) S2 Weight Typical PKG DIP16 pin, HSOP16 pin, SSOP16 pin DIP16-P-300-2.54A: 1.11 g (typ.) GND terminal = HEAT SINK HSOP16-P-300-1.00: 0.50 g (typ.) Process :BiCD0.6 (30 V) SSOP16-P-225-1.00A: 0.14 g (typ.) Over current shutdown circuit (ISD). Thermal shutdown circuit (TSD). Undervoltage lockout circuit (UVLO). Pull-down resistance for input terminal (250 k). The following conditions apply to solderability: About solderability, following conditions were confirmed (1)Use of Sn-37Pb solder Bath (2)Use of Sn-3.0Ag-0.5Cu solder Bath solder bath temperature: 230 solder bath temperature: 245 dipping time: 5 seconds dipping time: 5 seconds the number of times: once the number of times: once use of R-Type flux use of R-type flux Ver.3 2010-07-07 1 TB6674PG/FG/FAG Block Diagram Bridge Bridge driver driver TB6674PG/FAG TB6674FG / Note: TB6674FG: Terminals 2, 7, 12, and 13 are NC. TB6674FG: The heat fin is connected to GND. Pin Description Pin No. Symbol Functional Description 1 / (1) V Low-voltage power supply terminal S2 A 2 / (3) V Power voltage supply terminal for control CC A-ch forward rotation / reverse rotation signal input 3 / (4) IN A terminal, Truth Table 1 4 / (F) GND GND terminal 5 / (F) GND GND terminal B-ch forward rotation / reverse rotation signal input 6 / (5) IN B terminal, Truth Table 1 7 / (6) PS Power saving signal input terminal 8 / (8) V Standby signal input terminal, Truth Table 2 S2 B 9 / (9) V High-voltage power supply terminal S1 B 10 / (10) B Output B 11 / (11) B Output B 12 / (F) GND GND terminal 13 / (F) GND GND terminal 14 / (14) Output A 15 / (15) A Output A 16 / (16) V High-voltage power supply terminal. S1 A Pin No. of ( ) :TB6674FG Ver.3 2010-07-07 2