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Technical content

Features

 Silent driver  Built-in lock protection and auto restart function  Low standby current (PWM=0), supply current less than 200uA  FG output  Built-in thermal protection circuit(RoHS Compliant)  Low duty start up

Applications

 Motor drivers for silent fan motors Pin Configuration MSOP-8 OUT2 VCC IN+ IN- GND OUT1 PWM FG Figure 1. Pin Configuration

1 OUT2 Motor output terminal 2

2 VCC Power supply terminal

3 IN+ Hall input terminal+

4 IN- Hall input terminal-

5 FG FG signal output terminal

6 PWM PWM signal input terminal

7 OUT1 Motor output terminal 1

8 GND GND terminal

Table 1. Pin Description

January, 2013 Rev. 1.0 2/8 ©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com Single-Phase Full-Wave Motor Driver SDC11557 Functional Block Diagram OSC Lock Protection TSD 10uA 90kΩ 10kΩ VCC VCC GND IN+ IN- FG OUT1 OUT2 PWM Controller Figure 2. Functional Block Diagram

Ordering Information

MSOP-8: M E1: Pb-free G1: Halogen-free TR: Tape Blank: Tube X X - X Package Temperature Range Part Number Marking ID Packing Type MSOP-8 -40°C~85°C Pb-free Halogen-free Pb-free Halogen-free SDC11557MTR-E1 SDC11557MTR-G1 1557 1557G Tape SDC11557M-E1 SDC11557M-G1 1557 1557G Tube

Table 2. Absolute Maximum Ratings Table 3. Recommended Operating Conditions

Table 4. Electrical Characteristics Table 5. Truth Table Figure 3. Power Dissipation Curve

Figure 6. Quick Start Waveform linear output architecture is used as output driver. this function can also reduce the temperature rise.

January, 2013 Rev. 1.0 7/8 ©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com Single-Phase Full-Wave Motor Driver SDC11557 Package Dimension MSOP-8 Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.820 1.100 0.032 0.043 A1 0.020 0.150 0.001 0.006 A2 0.750 0.950 0.030 0.037 b 0.250 0.380 0.010 0.015 c 0.090 0.230 0.004 0.009 D 2.900 3.100 0.114 0.122 e 0.650(BSC) 0.026(BSC) E1 4.750 5.050 0.187 0.199 E 2.900 3.100 0.114 0.122 L 0.400 0.800 0.016 0.031 θ 0° 6° 0° 6°

January, 2013 Rev. 1.0 8/8 ©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com Single-Phase Full-Wave Motor Driver SDC11557 Shaoxing Devechip Microelectronics Co., Ltd. UUUhttp://www.sdc-semi.com/UUU IMPORTANT NOTICE Information in this document is provided solely in connection with Shaoxing Devechip Microe lectronics Co., Ltd. (abbr. SDC) products. SDC reserves the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at anytime, without notice . SDC does not assume any responsibili ty for use of any its products for any particular purpose, nor does SDC assume any liability arising out of the application or use of any its products or circuits. SDC does not convey any license under its patent rights or other rights nor the rights of others. © 2013 Devechip Microelectronics - All rights reserved Contact us: Headquarters of Shaoxing Address: Tian Mu Road, No13, Shaoxing city, Zhejiang province, China Zip code: 312000 Tel: (86) 0575-8861 6750 Fax: (86) 0575-8862 2882 Shenzhen Branch Address: 22A, Shangbu building, Nan Yuan Road, No.68, Futian District, Shenzhen city, Guangdong province, China Zip code: 518031 Tel: (86) 0755-8366 1155 Fax: (86) 0755-8301 8528