| Part Number | TA8435H |
| Manufacturer | Toshiba |
| Title | PWM Chopper Type Bipolar Stepping Motor Driver |
| Description | MO NC VCC NC VMB φB PG−B NFB φB φA NFA PG−A φA VMA NC 4 2005-08-04 TA8435H/HQ OUTPUT CIRCUIT INPUT CIRCUIT z CK1, CK2, CW / CCW, M1, M2, REF ... |
| Features |
z Single-chip bipolar sinusoidal micro-step stepping motor driver z Output current up to 1.5 A (AVE.) and 2.5 A (PEAK) z PWM chopper-type z Structured by high voltage Bi-CMOS process technology z Forward and reverse rotation are available z 2-, 1-2-, W1-2-, and 2W1-2-phase modes, and one- or two-clo...
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| File Size | 559.70KB |
| Datasheet |
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TA8435HQ : MO NC VCC NC VMB φB PG−B NFB φB φA NFA PG−A φA VMA NC 4 2005-08-04 TA8435H/HQ OUTPUT CIRCUIT INPUT CIRCUIT z CK1, CK2, CW / CCW, M1, M2, REF IN: Terminals z RESET , ENABLE : Terminals z OSC: Terminal Equipped with 100 kΩ of pull-up resistance. 5 2005-08-04 TA8435H/HQ OSCILLATOR FREQUENCY CALCULATION The sawtooth oscillator (OSC) circuit consists of Q1 through Q4 and R1 through R4. Q2 is turned off when VOSC is less than the voltage of 2.5 V + VBE (Q2), a value that is approximately equal to 2.85 V. VOSC is increased by COSC charging through R1. Q3 and Q4 are turned on when VOSC becomes 2.85 V (High level.) The Low level of V (4) pin is equal to VBE(Q2) + V(SAT)(Q4), which is approxi.