NJM2625

NJM2625 PWM TYPE 3-PHASE DC BRUSHLESS MOTOR CONTOROL IC ♦GENERAL DESCRIPTION The NJM2625 is a 3-phase DC brush-less motor control IC with PWM control. It incorporates hall amplifiers, PWM control circuits, totem-pole pre drivers for external power MOS transistors, current limit and frequency generator circuit. The NJM2625 easily implements speed control and rotation direction control for DC motor application. ♦PACKAGE OUTLINE NJM2625D ♦FEATURES Operating Voltage Pre-Driver Circuit Current Limit Sense Voltage Internal Oscillator Forward or Reverse Direction FG Signal Output Internal Soft Start Internal ON/OFF Circuit Bipolar Technology Package Outline (V+=8V to 18V) (Iout=+50mA/-150mA MAX.) (Current limit=0.5V±10%) (Frequency control for external capacitor) (Output frequency to hall frequency) (External capacitor to Verr pin. (No-output is Verr pin to GND.) DIP20, DMP20 NJM2625M ♦PIN CONFIGRATION 1 2 3 4 5 6 7 8 9 10 NJM2625D NJM2625M 20 19 18 17 16 15 14 13 12 11 PIN FUNCTION 1.FG 11.GND 2.Vref 12.ILIMIT 3.H1+ 13.WL 4.H1- 14.VL 5.H2+ 15.UL 6.H2- 16.WH 7.H3+ 17.VH 8.H39.Verr 18.UH 19.V+ 10.OSC 20.F/R Ver 1.0 - 1 - NJM2625 ♦BLOCK DIAGRAM 20.F/R 3.H1+ 4.H15.H2+ 6.H27.H3+ 8.H3- 19.V+ 2.Vref Rotor Position Decode r V+ Vref UVLO 10.OSC 9.Verr Saw Oscillator PWM COMP Logic 1.FG 11.GND FG V+ 16.WH 17.VH 18.UH 13.WL 14.VL 15.UL 12.ILIMIT -2- NJM2625 ♦ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER Maximum Supply Voltage Power Dissipat...