LB1947_09

Ordering number : EN6192B Monolithic Digital IC LB1947 Overview PWM Current Control Type Bidirectional Motor Driver The LB1947 is a PWM current control type bidirectional motor driver IC. Features • PWM current control (fixed OFF time) • Selectable current decay pattern (FAST, SLOW, and MIX DECAY modes) • Simultaneous ON prevention function (feed-through current prevention) • Built-in thermal shutdown circuit • Built-in noise canceler Specifications Parameter Absolute Maximum Ratings at Ta = 25°C Symbol VBB max IO peak IO max VCC max VIN VE max VREF Pd max Topr Tstg tw ≤ 20µs Conditions Ratings 50 2.25 2.0 7.0 -0.3 to VCC 1.1 -0.3 to VCC 1.6 -20 to +85 -55 to +150 Unit V A A V V V V W °C °C Maximum motor supply voltage Output peak current Output continuous current Logic supply voltage Logic input voltage range Emitter output voltage Reference voltage Allowable power dissipation Operating temperature Storage temperature Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 22509 MS / 80699RM(KI) No.6192-1/9 LB1947 Allowable Operating Ranges at Ta = 25°C Parameter Motor supply voltage Logic supply voltage Reference voltage Symbol VBB VCC VREF Conditions Ratings 10 to 45 4.75 to 5.25 0 to VCC-2 Unit V V V Electrical Characteristics at Ta = 25°C, VCC = 5V Parameter Output Block Output stage supply current IBB ON IBB BR IBB OFF IBB wt Output saturation voltage VOsat1 VOsat2 VOsat3 VOsat4 Output leak current IO1(leak) IO2(leak) Output sustain voltage Logic Block Logic supply current ICC ON ICC BR ICC OFF ICC wt Input voltage VINH VINL Input current IINH IINL Sensing voltage Sensing voltage 25H Sensing voltage 25L Sensing voltage 15H Sensing voltage 15L Sensing voltage 05H Sensing voltage 05L Reference current CR pin current MD pin voltage VE VEH25 VEL25 VEH15 VEL15 VEH05 VEL05 Iref ICR VMDH VMDM VMDL MD input current IMDH IMDL Thermal shutdown temperature TSD MD = VCC-0.5V, CR = 1.0V MD = 0.4V, CR = 2.0V Design guarantee value* -1.0 -5.0 170 VI = High, VREF = 2.5V VI = Low, VREF = 2.5V VI = High, VREF = 1.5V VI = Low, VREF = 1.5V VI = High, VREF = 0.5V VI = Low, VREF = 0.5V VREF = 1.0V VIN = 5V VIN = 0.8V 60 6 0 0.970 0.483 0.385 0.190 0.190 0.092 -0.5 -1.56 VCC-0.3 0.3VCC VCC-1.0 .0.4 +1.0 -1.3 1.0 0.5 0.4 0.2 0.2 0.1 90 10 IN1: High, IN2: Low, ST: High IN1: Low, IN2: High, ST: High IN1: Low, IN2: Low, ST: High ST: Low 11 11 11 1.0 2 0.8 120 13 1.1 1.030 0.513 0.410 0.210 0.210 0.108 +0.5 -1.04 16 16 16 2 21 21 21 3.0 mA mA mA mA V V µA µA V V V V V V V µA mA V V V µA µA °C VSUS No-load state, Forward No-load state, Brake No-load state, Output off No-load state, Standby mode IO = +1.0A, Sink IO = +2.0A, Sink IO = -1.0A, Source IO = -2.0A, Source VO = VBB, Sink VO = 0V, Source L = 3.9mH, IO = 2.0A, Design guarantee value* -50 50 1.2 1.6 1.8 2.1 0.4 0.2 0.2 0.6 0.4 0.4 1.0 0.8 0.8 0.1 1.5 1.9 2.2 2.4 50 mA mA mA mA V V V V µA µA V Symbol Conditions min Ratings typ max Unit * Design guarantee value, Do not measurement. No.6192-2/9 LB1947 Package Dimensions unit : mm (typ) 3249 25.6 C0.7 3.4 (10.0) 2.4 3.0 MIN 3.5 ( 2.0) 12 (0.8) 2.0 0.5 1.15 13 2.0 MIN (13.9) 12.2 (12.8) 16.4 MAX 0.4 1.2 SANYO : SIP13HJ 2.0 Pd max -- Ta Allowable power dissipation, Pd max -- W 1.6 1.2 0.8 0.4 0 -20 0 20 40 60 80 85 100 Ambient temperature, Ta -- °C Pin Assignment LB1947 1 2 3 4 5 6 7 8 9 10 11 12 13 Top view OUTA E OUTA ST VBB VCC IN1 VI IN2 VREF CR MD GND No.6192-3/9 LB1947 Block Diagram OUTA 3 OUTA 1 VBB 6 MD 12 IN1 8 IN2 9 ST 5 VI 4 Control logic circuit 7 VCC VREF 10 Current select circuit One-shot multiblanking time Thermal shutdown circuit UVLO GND 13 11 CR 2 E Truth Table IN1 H H H H H H H H H H H H L L L L L L X IN2 L L L L L L H H H H H H H H H H H L X ST H H H H H H H H H H H H H H H H H H L or OPEN VI H H H L L L H H H L L L H H L L X X X MD L M H L M H L M H L M H L M L M H X X OUTA H H H H H H L L L L L L L L L L L OFF OFF OUTA L L L L L L H H H H H H L L L L L OFF OFF Operating mode Forward, 2/5 times, FAST Forward, 2/5 times, MIX Forward, 2/5 times, SLOW Forward, 1/5 times, FAST Forward, 1/5 times, MIX Forward, 1/5 times, SLOW Reverse, 2/5 times, FAST Reverse, 2/5 times, MIX Reverse, 2/5 times, SLOW Reverse, 1/5 times, FAST Reverse, 1/5 times, MIX Reverse, 1/5 times, SLOW Brake, 2/5 times, FAST Brake, 2/5 times, MIX Brake, 1/5 times, FAST Brake, 1/5 times, MIX Brake, no current limiting Output OFF Standby mode (circuit OFF) Except for MD pin, Low at input OPEN. MD M: determined by external voltage. No.6192-4/9 LB1947 Pin Function Pin No. 1 3 2 4 Pin name OUTA OUTA E VI Sense voltage control pin. High: sense voltage is 2/5 of VREF Low: sense voltage is 1/5 of VREF 5 ST High: circuit operation ON Low: standby mode 8 IN1 High: rotation mode Low: brake mode 9 IN2 High: reverse mode Low: forward mode 6 7 10 VBB VCC VREF Motor power supply voltage. Logic power supply voltage. Output current setting reference pin. Setting range: 0 to (VCC−2V) VCC 5µA 50kΩ VCC 100µA Function Output pin. Equivalent circuit 4 VI 40kΩ 3s 1s 40kΩ 10 VREF 11 12 CR MD Oscillator with self-excitation. Current attenuation switching pin. Low : FAST DECAY High: SLOW DECAY M : MIX DECAY M is set by external power supply voltage. Range : 1.1 to 4.0V 13 GND Ground pin No.6192-5/9 LB1947 Sample Application Circuits 1. Forward/reverse motor with current limiter 24V M *Schottky barrier type for external diodes. OUTA 3 MD IN1 IN2 ST VI 1 VBB 6 VCC OUTA 12 8 9 5 4 Control logic circuit 7 5V VREF 10 Current select circuit One-shot multiblanking time Thermal shutdown circuit UVLO GND 13 11 CR 2 E RE Limiter current setting method IN1 H H L L − IN2 L H H L − ST H H H H L OUTA H L L OFF OFF I = VREF/ (5 × RE) OUTA L H L OFF OFF Mode Forward Reverse Brake Output OFF Standby mode No.6192-6/9 LB1947 2. Forward/reverse motor 24V M *Schottky barrier type for external diodes. OUTA 3 MD IN1 IN2 ST VI 1 VBB 6 VCC OUTA 12 8 9 5 4 Control logic circuit 7 5V VREF 10 Current select circuit One-shot multiblanking time Thermal shutdown circuit UVLO GND 13 11 CR 2 E IN1 H H L L − IN2 L H H L − ST H H H H L OUTA H L L OFF OFF OUTA L H L OFF OFF Mode Forward Reverse Brake Output OFF Standby mode No.6192-7/9 LB1947 3. PWM current control forward/reverse motor (MIX DECAY) 24V M *Schottky barrier type for external diodes. OUTA 3 MD IN1 IN2 ST VI 1 VBB 6 VCC OUTA 12 8 9 5 4 Control logic circuit 7 5V VREF 10 Current select circuit One-shot multiblanking time Thermal shutdown circuit UVLO GND 13 11 CR 2 E RE No.6192-8/9 LB1947 Notes on Usage 1. VREF pin Because the VREF pin serves for input of the set current reference voltage, precautions against noise must be taken. 2. GND pin The ground circuit for this IC must be designed so as to allow for high-current switching. Blocks where high current flows must use low-impedance patterns and must be removed from small-signal lines. Especially the ground connection for the sensing resistor RE at pin E, and the ground connection for the Schottky barrier diodes should be in close proximity to the IC ground. The capacitors between VCC and ground, and VBB and ground should be placed close to the VCC and VBB pins, respectively. 3. CR pin setting (Switching off time, Noise cancel time) The noise cancel time (Tn) and the switching off time (Toff) are set by the following expressions: Noise cancel time: Tn ≈ C × R × ln {(1.0 − RI) / (4.0 − RI) [sec] CR charge current: 1.3mA Switching off time: Toff ≈ −C × R × ln (1.0 / 4.8) [sec] Internal configuration at CR pin VCC line One-shot multi-blanking time circuit E1 C:1000pF R:5.1kΩ CR constant range: R = 4.7k to 100kΩ C = 330pF to 2200pF SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. 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SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of February, 2009. Specifications and information herein are subject to change without notice. PS No.6192-9/9