UH477

UNISONIC TECHNOLOGIES CO., LTD UH477 LINEAR INTEGRATED CIRCUIT SINGLE PHASE DC MOTOR DRIVE IC  DESCRIPTION The UTC UH477 is particularly designed for a single phase DC motor driver circuit. It includes hall sensor and output coil drivers. The range of the operating voltage and the operation current is typically 0.3A. The UTC UH477 is a well performance integrated IC with less required external components. The high sensitivity of Hall effect sensor is suitable for motors from mini-type CPU coolers to blowers and DC fans.  FEATURES * Operating Voltage Ranges Widely from 3.0V to 20V * 1 Chip Hall Sensor/Drivers * Output Thermal Shutdown Protect Circuit * Output Sink Current up to 300mA  ORDERING INFORMATION Ordering Number Lead Free Halogen Free UH477L-G04-K UH477G-G04-K Package SIP-4 Packing Bulk  MARKING www.unisonic.com.tw Copyright © 2017 Unisonic Technologies Co., Ltd 1 of 6 QW-R109-028.F UH477 LINEAR INTEGRATED CIRCUIT  PIN DESCRIPTION PIN NO. 1 2 3 4 PIN NAME DESCRIPTION VCC IC Power Supply NO Coil driver output is low state during the N magnetic field. SO Coil driver output is low state during the S magnetic field. GND IC Ground  BLOCK DIAGRAM 1 Voltage Regulator Hall Element Temperature Compensated Current Amplifier Latch Circuit Hysteresis Control Sensitivity Control Pre-Driver Thermal Shutdown 4 2 3  SENSOR LOCATIONS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R109-028.F UH477 LINEAR INTEGRATED CIRCUIT  ...