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| Camera Motor Driver (1.5 Channel) Features * * * * HT6751A/B Operating voltage: 2.0V~6.0V Operating current < 2mA at 3.0V, No load Standby current IVDD< 2mA, no load Separate logic power supply and motor power supply * * * * * Built-in thermal shutdown circuit Built-in H bridge control circuit Built-in spark killer diode Provides strong ESD (min. of 4KV) per pin 8-pin SOP package Applications * Camera motor driver * Toy motor driver General Description The IC can control H Bridge circuit for motor driving. It provides Spark Killer Diode/Thermal Shutdown function/Forward function/Reverse function/Brake function/Stop function for motor driver application. It is designed by LSI high technology with low power process. Block Diagram VDD VSS IN 1 IN 2 IN 3 T h e rm a l S h u td o w n C ir c u it RC O s c illa to r C h a rg e Pum p H B r id g e M o to r D r iv e C ir c u it VM OUT1 OUT2 In p u t C o n tro l Pin Assignment VM 1 8 2 7 3 6 4 5 OUT1 IN 3 VSS OUT2 IN 2 VDD IN 1 H T 6 7 5 1 A /B 8SOP 1 August 7, 2000 HT6751A/B Pin Description Pin No. 1 2 3 4 5 6 7 8 Pin Name VM OUT1 IN3 VSS IN1 VDD IN2 OUT2 I/O P O I 3/4 I 3/4 I O Description Power of motor driving circuit Connect to motor terminal Input signal Negative power supply, ground Input signal Positive power supply Input signal Connect to motor terminal Absolute Maximum Ratings Supply Voltage .......................VDD-0.3V to 7.0V Voltage to Input Terminal .....-0.3V to VDD+0.3 Junction Temperature ..............................150C Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Storage Temperature.................-40C to 125C Operating Temperature ..............-20C to 85C Electrical Characteristics Symbol VDD VM IVM IOPR IVDD IIL VIL VIH RON Parameter Operating Voltage 1 Operating Voltage 2 VM Current Operating Current Standby Current Input Leakage Current Input Low Voltage Input High Voltage H Bridge On Resistance Test Conditions VDD 3/4 3/4 5V 5V 5V 5V 5V 5V 3V Conditions 3/4 Motor loading Standby mode with internal pump No load @ VDD=5V Standby mode 0 0.3VDD VDD+0.3 0.4 2 August 7, 2000 HT6751A/B Symbol tCP_ON tCP_OFF tH_ON tH_OFF Parameter Charge Pump Turn On Time Charge Pump Turn Off Time H Bridge Turn On Time H Bridge Turn Off Time Test Conditions VDD 5V 5V 5V 5V Conditions VDD=VM=5V, Ivm=0.5A VDD=VM=5V, Ivm=0.5A VDD=VM=5V, Ivm=0.5A VDD=VM=5V, Ivm=0.5A Min. 3/4 3/4 3/4 3/4 Typ. 3/4 3/4 3/4 3/4 Max. 2 1 10 5 Unit ms ms ms ms Functional Description * In HT6751A function IN1 0 1 0 1 0 1 0 IN2 1 0 0 1 1 0 0 IN3 1 1 1 1 0 0 0 Function Motor1 forward Motor1 reverse Motor1 brake Standby mode Motor2 forward Motor2 reverse Motor2 brake MOS On P1/N2 P2/N1 N1/N2 3/4 P2/(N3) N2/(P3) N2/(N3) MOS Off P2/N1 P1/N2 P1/P2 P1/P2/N1/N2 N2/(P3) P2/(N3) P2/(P3) * In HT6751B function IN1 1 0 1 0 1 0 1 IN2 0 1 1 0 0 1 1 IN3 0 0 0 0 1 1 1 Function Motor1 forward Motor1 reverse Motor1 brake Standby mode Motor2 forward Motor2 reverse Motor2 brake MOS On P1/N2 P2/N1 N1/N2 3/4 P2/(N3) N2/(P3) N2/(N3) Mos Off P2/N1 P1/N2 P1/P2 P1/P2/N1/N2 N2/(P3) P2/(N3) P2/(P3) 3 August 7, 2000 HT6751A/B In normal state and standby mode - Charge pump circuit is in off state - Oscillator circuit is in off state - Standby current is below 2mA - For HT6751A, the oscillator circuit and charge pump circuit is on until IN1 or IN2 or IN3 is low input - For HT6751B, the oscillator circuit and charge pump circuit is on until IN1 or IN2 or IN3 is high input The system enters thermal shutdown mode (current is limited below 500mA) when the temperature of the internal sensor is greater than Junction Temperature and then release this mode until the temperature of the internal sensor below (Junction Temperatue >150C). The system can accept IN1/IN2/IN3 signal when in thermal shutdown mode. Application Circuits V V DD DD V M V M VDD 1 C hannel fo r m C /A S IC V IN 1 IN 2 DD VM OUT1 M1 OUT2 VSS B ra k e F o rw a rd R e v e rs e V VDD IN 1 IN 2 DD VM OUT1 OUT2 VSS M IN 3 IN 3 HT6751A V V DD HT6751A DD V M V M VDD 1 C hannel fo r m C /A S IC IN 1 IN 2 IN 3 VM OUT1 M1 OUT2 VSS B ra k e F o rw a rd R e v e rs e VDD IN 1 IN 2 IN 3 VM OUT1 OUT2 VSS M HT6751B V V M HT6751B DD P3 VDD 1 .5 C h a n n e l fo r m C /A S IC IN 1 IN 2 IN 3 VM OUT1 M1 OUT2 VSS OUT3 M2 N3 E x te rn a l H T 6 7 5 1 A /B 4 August 7, 2000 HT6751A/B Holtek Semiconductor Inc. (Headquarters) No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright a 2000 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. 5 August 7, 2000 |
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