HT6751A/B Camera Motor Driver (1.5 Channel) Features · · · · 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 · Toy motor driver Applications · Camera motor driver General Description The IC can control H Bridge circuit for motor driving. It provides Spark Killer Diode/Thermal Shutdown function/Forward function/Re- verse function/Brake function/Stop function for motor driver application. It is designed by LSI high technology with low power process. Block Diagram R C O s c illa to r V D D C h a rg e P u m p V S S IN 1 T h e rm a l S h u td o w n C ir c u it In p u t C o n tro l IN 2 IN 3 H B r id g e M o to r D r iv e C ir c u it V M O U T 1 O U T 2 Pin Assignment V M 1 8 O U T 1 2 7 O U T 2 IN 2 IN 3 3 6 V D D V S S 4 5 IN 1 H T 6 7 5 1 A /B 8 S O P 1 August 7, 2000 HT6751A/B Pin Description Pin No. Pin Name I/O Description 1 VM P Power of motor driving circuit 2 OUT1 O Connect to motor terminal 3 IN3 I Input signal 4 VSS ¾ Negative power supply, ground 5 IN1 I Input signal 6 VDD ¾ Positive power supply 7 IN2 I Input signal 8 OUT2 O Connect to motor terminal Absolute Maximum Ratings Supply Voltage .......................VDD-0.3V to 7.0V Storage Temperature.................-40°C to 125°C Voltage to Input Terminal .....-0.3V to VDD+0.3 Operating Temperature ..............-20°C to 85°C Junction Temperature ..............................150°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² 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. Electrical Characteristics Symbol Parameter Ta=25°C Test Conditions VDD Conditions ¾ Min. Typ. Max. Unit 2.0 ¾ 6.0 V VDD Operating Voltage 1 ¾ VM Operating Voltage 2 ¾ Motor loading 1.8 ¾ 6.0 V IVM VM Current 5V Standby mode with internal pump ¾ ¾ 10 mA IOPR Operating Current 5V No load @ VDD=5V ¾ ¾ 2 mA IVDD Standby Current 5V Standby mode ¾ 1 2 mA IIL Input Leakage Current 5V 0<Vin<VDD -1.0 ¾ 1.0 mA VIL Input Low Voltage 5V ¾ -0.3 0.3VDD V VIH Input High Voltage 5V ¾ 0.6VDD ¾ VDD+0.3 V RON H Bridge On Resistance 3V (up_NMOS+down_ NMOS) at 3V ¾ ¾ 0.4 W 2 August 7, 2000 HT6751A/B Symbol Test Conditions Parameter Conditions VDD Min. Typ. Max. Unit tCP_ON Charge Pump Turn On Time 5V VDD=VM=5V, Ivm=0.5A ¾ ¾ 2 ms tCP_OFF Charge Pump Turn Off Time 5V VDD=VM=5V, Ivm=0.5A ¾ ¾ 1 ms tH_ON H Bridge Turn On Time 5V VDD=VM=5V, Ivm=0.5A ¾ ¾ 10 ms tH_OFF H Bridge Turn Off Time 5V VDD=VM=5V, Ivm=0.5A ¾ ¾ 5 ms Functional Description · In HT6751A function IN1 IN2 IN3 0 1 1 1 0 0 Function MOS On MOS Off Motor1 forward P1/N2 P2/N1 1 Motor1 reverse P2/N1 P1/N2 0 1 Motor1 brake N1/N2 P1/P2 1 1 1 Standby mode ¾ P1/P2/N1/N2 0 1 0 Motor2 forward P2/(N3) N2/(P3) 1 0 0 Motor2 reverse N2/(P3) P2/(N3) 0 0 0 Motor2 brake N2/(N3) P2/(P3) Function MOS On Mos Off · In HT6751B function IN1 IN2 IN3 1 0 0 Motor1 forward P1/N2 P2/N1 0 1 0 Motor1 reverse P2/N1 P1/N2 1 1 0 Motor1 brake N1/N2 P1/P2 0 0 0 Standby mode ¾ P1/P2/N1/N2 1 0 1 Motor2 forward P2/(N3) N2/(P3) 0 1 1 Motor2 reverse N2/(P3) P2/(N3) 1 1 1 Motor2 brake N2/(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 >150°C). The system can accept IN1/IN2/IN3 signal when in thermal shutdown mode. Application Circuits V V V D D 1 C h a n n e l fo r m C /A S IC V D D IN 1 V M D D V D D F o rw a rd O U T 1 M 1 V IN 2 O U T 2 IN 3 V S S B ra k e R e v e rs e V D D V D D 1 C h a n n e l fo r m C /A S IC V IN 2 O U T 2 IN 3 V S S V M F o rw a rd IN 2 O U T 2 IN 3 V S S M 1 B ra k e 1 .5 C h a n n e l fo r m C /A S IC IN 1 V M V R e v e rs e V D D V M IN 1 O U T 1 IN 2 O U T 2 IN 3 V S S M H T 6 7 5 1 B H T 6 7 5 1 B V D D D D M O U T 1 D D M H T 6 7 5 1 A IN 1 V V M O U T 1 V D D M IN 1 H T 6 7 5 1 A V V D D M M P 3 V M O U T 3 O U T 1 M 1 IN 2 O U T 2 IN 3 V S S M 2 E x te rn a l N 3 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 ã 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