PT8A2767x DC Motor Controller

Transcription

1 Features Operation Range:.6~5.5V 0µA Maximum Standby Supply Current Thermal and Short-Circuit Protection Less than 00mΩ High-side MOSFET Filter for key input.5a current driver Protection for over temperature Protection for over current Battery under-voltage indicate Battery over discharge protect Lock function Low cost 8-pin SOIC and 5-pin SOT package Description The PT8A767x is a mixed signal CMOS LSI chip designed as a simple power switch circuit for shaver, toothbrush and other electrical devices. It can drive motor directly and detect battery lacking. ON/OFF button control work status, and LED, LED indicates work status. It has lock function. Applications Shaver Toothbrush Pin Configuration PT8A767A/B/C/D/E/F/G/H PT8A767I/J Pin Description PT8A767A/B/C/D/E/F/G/H Pin Name Pin No. Type Descriptions OUT O Output to drive motor ENB I Enable input, active low. LED O LED indicator output. LED 4 O LED indicator output. VCC 5 Power Power supply. OCP 6 I Over current protection input ON/OFF 7 I Key input, active low; this pin can also adjust the protection voltage of battery discharge. GND 8 Power Ground. PT8A767I/J Pin Name Pin No. Type Descriptions ENB I Enable input, active low. ON/OFF I Key input, active low; this pin can also adjust the protection voltage of battery discharge. OUT O Output to drive motor GND 4 Power Ground. VCC 5 Power Power supply.

2 Block Diagram Maximum Ratings Storage Temperature o C to +5 o C Supply Voltage to Ground Potential (Input & V CC Only) V to + 5.5V Supply Voltage to Ground Potential (Outputs Only) V to + 5.5V DC Input Voltage V to + 5.5V DC Output Current... 5A Power Dissipation...W Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Recommended operation conditions Symbol Parameter Min Typ Max Unit V CC Operating Voltage V V IH H Input Voltage 0.7V CC - - V V IL L Input Voltage V CC V T A Operating temperature C

3 Electrical Characteristics (T A = 0 ~ 85ºC, unless otherwise noted) Symbol Parameter V CC Test Conditions Conditions Min Typ Max Unit I CCQ Standby current.4v Floating µa I OUT OUT output current.4v Taul=50mS A.4V V OUT =0.5V A VT Battery lacking - No pull low resistor in Pin: ON/OFF... V VT Battery over discharge - No pull low resistor in Pin: ON/OFF. Auto off V VT Over Current Protect.4V Pin: OCP..5.8 V VT4 ON/OFF Trigger Voltage Pin: ON/OFF V T Short click button - Pin: ON/OFF ms T Long click button - Pin: ON/OFF S T Over current protection - V OCP <VT S T4 Over temperature protection C Rth(j-a) Junction to ambient (DC) SOIC-8 package C/ SOT-5 package W

4 Functional Description ON/OFF Button The button will be toggled ON or OFF state by pushing it less than seconds, and toggling lock or unlock state by pushing it over seconds. Description is as below: LED Indicator LED, LED work status is as below: On Lock Work Status Mode Mode LED LED LED LED Off Off Off Off Off Normal On Off On Off Under voltage Off On Flash* Off Normal Flash* Off Off Flash* Under voltage Off Flash* Off Flash* Note:. Flash: LED flashes by.5hz;. Flash: LED flashes by.5hz, but only 5 times. Reset After power on, the chip will be reset by internal POR circuit. LED and LED pin will output low level and OUT pin will output high-impedance state. Over Current Protect When Output current from pin OUT is over spec, the IC will turn to OFF state. Over Temperature Protect When IC junction temperature is over spec, pin OUT will turn to high-impedance state and the system is still in ON State. Battery Over Discharge Protect During on state, the IC will auto off when the battery voltage is under spec (VT). If the process repeats three times continuously, the IC will be always in off state and ON/OFF button will be locked unless reset pin ENB. Under Voltage Protection During on state, the IC will turn to under voltage mode when the battery voltage is under spec (VT). 4

5 Application Circuit PT8A767A/B/C/D/E/F/G/H AC L AC N R 0K/W AC0V D C 0n400v T : 6.57 C E B Q C 0n N555 R 00K R6 D N448 D N448 R 5.6K 5.6K LED C4 0.u BT.4V R R9 MOTOR C5 0.u LED + A - D4 N448 R5.K R4.K LED C 0.u 4 U OUT ENB LED LED R0 0K GND ON/OFF OCP C6 0.u VCC K R NC R7 NC N4007 GND PT8A767I/J D MOTOR AC L R 0K/W AC0V C 0n400V T : 6.57 C B C 0n Q 00K R R6 5.6K N448 D N448 R 5.6K LED C4 0.u.4V BT R8 NC C5 0.u + A - R7 NC D4 C 0.u N448 U K OUT ON/OFF ENB VCC GND 5 4 AC N D E N555 N4007 GND 5

6 Mechanical Information WE (SOIC-8) Note: ) Controlling dimensions in millimeters. ) Ref: JEDEC MS-0E/AA Symbol Dimensions In Millimeters Min Max A A A b c D E E e L BSC.70 θ 0 8 6

7 TAE (SOT-5L) Note: ) Controlling dimensions in millimeters. ) Ref: JEDEC MO-78C/AA PKG. DIMENSIONS(MM) SYMBOL MIN MAX A.05.5 A A.05.5 b c D.8.0 E E e 0.95BSC e L

8 Ordering Information Part No. Package Code Package PT8A767xWE W Lead free and Green 8-Pin SOIC PT8A767ITAE* TA Lead free and Green 5-Pin SOT PT8A767JTAE* TA Lead free and Green 5-Pin SOT Note: x shows A~H with different function. See Function Comparison Table. E = Pb-free and Green Adding X Suffix= Tape/Reel *Contact Pericom for availability Function Comparison Table Part No Disable when charging Key lock LED flash for battery low LED Mode Package PT8A767A* Y N N SOIC-8 PT8A767B* Y N Y SOIC-8 PT8A767C* Y Y N SOIC-8 PT8A767D* Y Y Y SOIC-8 PT8A767E* N N N SOIC-8 PT8A767F N N Y SOIC-8 PT8A767G* N Y N SOIC-8 PT8A767H* N Y Y SOIC-8 PT8A767I* Y N N SOT-5 PT8A767J* N N N SOT-5 Note: * Contact Pericom for availability. Pericom Semiconductor Corporation Pericom reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom. 8