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LB11999 데이터시트(PDF) 11 Page - Sanyo Semicon Device |
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LB11999 데이터시트(HTML) 11 Page - Sanyo Semicon Device |
11 / 12 page LB11999,11999H No. 6180-11/12 Continued from preceding page Control reference voltage applied pin. Determines control start voltage. Speed control voltage applied pin. V type control technique VC > VCREF : Forward VC < VCREF : Slowdown (Reverse-blocking circuit prevents reverse rotation.) W-phase output. Output transistor GND. V-phase output. Upper side output NPN transistor collector pin (common for all 3 phases). For current detection, connect resistor between VCC3 pin and RF pin. Constant current control and current limiter works by detecting this voltage. Short brake pin. BRAKE: High –> Brake Low/Open –> Drive U-phase output. VCREF VC WOUT VOUT UOUT 0V to VCC1 GND pin for all circuits except output. Control loop frequency compensator pin. Connecting a capacitor between this pin and GND prevents closed loop oscillation in current limiting circuitry. Pin number Pin name Pin voltage Equivalent circuit Pin function SIG GND FC PWR GND RF LMC BRAKE 18 (8) 20 (6) 21 (5) 22 (4) 23 (2) 24 (1) 1 (28) 2 (27) 5 (23) 19 (7) 16 (12) 1.3V to 2V 20 20k 5k 2k VCC1 (6) 51k 21 200 25 µ 25 µ VCC1 15 µ 15 200 µ 22 (4) (5) 5 3.9 3.9 VCC2 1 23 2 24 (23) (1) (2, 28, 27) VCC1 5k RF 7k 15k 19 (7) 100 µ VCC1 50k 75k 16 (12) Unit (Resistance: Ω, capacitance: F) |
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