(Hong Kong)
Product Summary
The hef4752vp is a circuit for a.c. motor speed control utilizing LOCMOS technology. The circuit synthesizes three 120° out of phase signals, of which the average voltage varies sinusoidally with time in the frequency range 0 to 200 Hz. The method employed is based upon the pulse width modulation principle, in order to achieve a sufficient accuracy of the output voltages over the whole frequency range. A pure digital waveform generation is used. All outputs are of the push-pull type. Inputs and outputs are protected against electrostatic effects in a wide variety of device-handling situations. However, to be totally safe, hef4752vp is desirable to take handling precautions into account.
Parametrics
hef4752vp absolute maximum ratings:(1)Input leakage current: 0.3μA at 25℃, 1μA at 85 ℃;(2)Input voltage increasing: 8.0V; (3)Input voltage decreasing: 7.0V; (4)Output voltage LOW: 0.05V; (4) Input voltage LOW: 1.5V at Vdd=5, 3.0V at Vdd=10; (5) Quiescent device current: 50μA at Vdd=5 T=-40℃ /25℃, 375 μA at T=85 ℃, 100μA at Vdd=10, 750μA at T=85℃.
Features
hef4752vp features: (1)Quiescent device current IDD: 375 µA; (2)Output voltage HIGH VOH: 9.95 V; (3)Output voltage LOW VOL: 0.05 V.
Diagrams
