Document
Switch Hall IC
Datasheet
SDC477
General Description
Features
The SDC477, is an integrated Hall sensor with H-bridged
Toutput driver designed for brushless DC motor
applications. The high sensitivity of Hall-effect sensor is
Nsuitable for motors from mini-type CPU coolers to Eblowers and DC fans. Typical operation current is 250mA OCUMand operating voltage range is wide.
One-chip hall sensor Wide operating voltage range: 3.8V~20V Output sink current up to 250mA Output thermal shutdown protection Package : TO-94
Applications
Brushless DC motor Brushless DC fan Revolution counting Speed measurement
FIDENTIAL DTO-94 CON Figure 1. Package Type
SDC
December, 2013 Rev. 1. 2 ©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/8 www.sdc-semi.com
Switch Hall IC
Datasheet
SDC477
Pin Configuration
Package: TO-94
1.VDD
T2.DO
3.DOB
N4.GND
OCUMEPin Number 1 D2 L3 IA4
NTFunctional Block Diagram
123 4
Figure 2. Pin Configuration Pin Name VCC DO DOB .