LV8761V_10

Ordering number : ENA1172A LV8761V Overview Bi-CMOS LSI Forward/Reverse H-bridge Driver The LV8761V is an H-bridge driver that can control four operation modes (forward, reverse, brake, and standby) of a motor. The low on-resistance, zero standby current, highly efficnet IC is optimal for use in driving brushed DC motors for office equipment. Features • Forward/reverse H-bridge motor driver: 1 channel • Built-in current limiter circuit • Built-in thermal protection circuit • Built-in short-circuit protection function • Unusual condition warning output pin • Short-circuit protection circuit selectable from latch-type or auto reset-type Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Symbol VM max VCC max Output peak current Output continuous current Logic input voltage Allowable power dissipation Operating temperature Storage temperature IO peak IO max VIN Pd max Topr Tstg Mounted on a specified board. * tw ≤ 20ms, duty 5% Conditions Ratings 38 6 4 3 -0.3 to VCC+0.3 3.15 -20 to +85 -55 to +150 Unit V V A A V W °C °C * Specified circuit board : 90mm×90mm×1.6mm, glass epoxy 2-layer board (2S0P), with backside mounting. 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. 30310 SY 20100223-S00008 / 42308 MS PC 20080331-S00003 No.A1172-1/13 LV8761V Allowable Operating Ratings at Ta = 25°C Parameter Supply voltage range Symbol VM VCC VREF input voltage Logic input voltage VREF VIN Conditions Ratings 9 to 35 3 to 5.5 0 to VCC-1.8 0 to VCC Unit V V V V Electrical Characteristics at Ta = 25°C, VM = 24V, VCC = 5V, VREF = 1.5V Parameter General Standby mode current drain 1 Standby mode current drain 2 Operating mode current drain 1 Operating mode current drain 2 VREG output voltage VCC low-voltage cutoff voltage Low-voltage hysteresis voltage Thermal shutdown temperature Thermal hysteresis width Output block Output on resistance Ron1 Ron2 Output leakage current Rising time Falling time Input output delay time IOleak tr tf tpLH tpHL Charge pump block Step-up voltage Rising time Oscillation frequency Control system input block Logic pin input current 1 IINL IINH Logic pin input current 2 IINL IINH Logic pin input H-level voltage Logic pin input L-level voltage Current limiter block VREF input current Current limit comparator threshold voltage Short-circuit protection block SCP pin charge current Comparator threshold voltage EMO output saturation voltage Iscp Vthscp Vemo IO = 500μA SCP = 0V 3.5 0.8 5 1 0.3 6.5 1.2 0.4 μA V V IREF Vthlim VREF = 1.5V -0.5 0.285 0.3 0.315 μA V VINH VINL VIN = 0.8V adaptive pin : PS VIN = 5V adaptive pin : PS VIN = 0.8V adaptive pin : IN1, IN2, EMM VIN = 5V adaptive pin : IN1, IN2, EMM adaptive pin : PS, IN1, IN2, EMM adaptive pin : PS, IN1, IN2, EMM 5.6 56 5.6 35 2.0 0.8 8 80 8 50 10.4 104 10.4 65 μA μA μA μA V V VGH tONG Fcp VM = 24V VG = 0.1μF 115 28.0 28.7 250 140 29.8 500 165 V μs kHz IO = 3A, sink side IO = -3A, source side VO = 35V 10% to 90% 90% to 10% IN1 or IN2 to OUTA or OUTB (L → H) IN1 or IN2 to OUTA or OUTB (H → L) 200 200 550 550 0.2 0.32 0.25 0.40 50 500 500 700 700 Ω Ω μA ns ns ns ns IMst ICCst IM ICC VREG VthVCC VthHIS TSD ΔTSD Design guarantee * Design guarantee * PS = “L” PS = “L” PS = “H”, IN1 = “H”, with no load PS = “H”, IN1 = “H”, with no load IO = -1mA 4.75 2.5 120 155 1 3 5 2.7 150 170 40 1 1 1.3 4 5.25 2.9 180 185 μA μA mA mA V V mV °C °C Symbol Conditions min Ratings typ max Unit * Design guarantee value and no measurement is made. No.A1172-2/13 LV8761V Package Dimensions unit : mm (typ) 3361 TOP VIEW 15.0 36 SIDE VIEW BOTTOM VIEW (4.0) 5.6 7.6 12 0.8 (0.7) 0.3 0.2 0.1 (1.5) 1.7 MAX SIDE VIEW 0.5 SANYO : SSOP36J(275mil) Pin Assignment VCC 1 PGND 2 NC 3 NC 4 NC 5 OUTB 6 OUTB 7 RNF 8 RNF 9 VM 10 VM 11 OUTA 12 OUTA 13 NC 14 NC 15 NC 16 PS 17 GND 18 (3.5) 36 EMM 35 SCP 34 VREF 33 NC 32 NC 31 NC 30 IN2 29 IN1 28 NC 27 REG5 26 CP1 25 CP2 24 NC 23 GND 22 NC 21 VG 20 NC 19 EMOT LV8761V Top view No.A1172-3/13 LV8761V 3.5 Pd max – Ta *1 3.15 Allowable power dissipation, Pd max – W 3.0 2.5 *2 2.0 2.05 1.64 1.5 1.07 1.0 0.5 0 – 20 *1 With Exposed Die-Pad substrate *2 Without Exposed Die-Pad 0 20 40 60 80 100 Ambient temperature, Ta – °C Substrate Specifications (Substrate recommended for operation of LV8761T) Size : 90mm × 90mm × 1.6mm (two-layer substrate [2S0P]) Material : Glass epoxy Copper wiring density : L1 = 95% / L2 = 95% L1 : Copper wiring pattern diagram L2 : Copper wiring pattern diagram Cautions 1) The data for the case with the Exposed Die-Pad substrate mounted shows the values when 90% or more of the Exposed Die-Pad is wet. 2) For the set design, employ the derating design with sufficient margin. Stresses to be derated include the voltage, current, junction temperature, power loss, and mechanical stresses such as vibration, impact, and tension. Accordingly, the design must ensure these stresses to be as low or small as possible. The guideline for ordinary derating is shown below : (1)Maximum value 80% or less for the voltage rating (2)Maximum value 80% or less for the current rating (3)Maximum value 80% or less for the temperature rating 3) After the set design, be sure to verify the design with the actual product. Confirm the solder joint state and verify also the reliability of solder joint for the Exposed Die-Pad, etc. Any void or deterioration, if observed in the solder joint of these parts, causes deteriorated thermal conduction, possibly resulting in thermal destruction of IC. No.A1172-4/13 M +- Block Diagram CP1 CP2 VG VM OUTA OUTB RNF Charge pump PGND Output preamplifier stage Output preamplifier stage VREG Reference Voltage Circuit TSD LVS Output control logic Oscillation circuit + Short-circuit Protection Circuit Current Limiter Circuit + VREF LV8761V PS EMOT VCC +EMM SCP IN1 IN2 GND No.A1172-5/13 LV8761V Pin Functions Pin No. 29 30 36 Pin Name IN1 IN2 EMM Pin Functtion Output control signal input pin 1. Output control signal input pin 2. Short-circuit protection circuit mode switching pin. Equivalent Circuit VCC 10kΩ 100kΩ GND 17 PS Power save signal input pin. VCC 50kΩ 10kΩ 10kΩ 50kΩ GND 34 VREF Reference voltage input pin for output current limit setting. VCC 500Ω GND 35 SCP Short-circiut protection circuit, detection time setting capacitor connection pin. VCC 500Ω GND 1 VCC Power supply connection pin for control block. Continued on next page. No.A1172-6/13 LV8761V Continued from preceding page. Pin No. 10, 11 12, 13 8, 9 6, 7 2 Pin Name VM OUTA RNF OUTB PGND Pin Functtion Motor power-supply connection pin. OUTA output pin. Current sense resistor connection pin. OUTB output pin. Power ground. Equivalent Circuit 10 11 REG5 12 13 6 7 500Ω 500Ω 2 GND 26 25 21 CP1 CP2 VG Charge pump capacitor connection pin. Charge pump capacitor connection pin. Charge pump capacitor connection pin. 89 26 10 11 25 21 REG5 100Ω GND 27 REG5 Internal reference voltage output pin. VM 2kΩ 25kΩ GND 19 EMOT Unusual condition warning output pin. VCC 500Ω GND 18, 23 GND Ground. 74kΩ No.A1172-7/13 LV8761V DC Motor Driver 1.DCM output control logic Contol Input PS L H H H H IN1 * L H L H IN2 * L L H H OUTA OFF OFF H L L Output OUTB OFF OFF L H L Mode Standby Output OFF CW (forward) CCW (reverse) Brake 2.Current limit control timing chart Limit current Output current OUTA OUTB toff CHARGE SLOW Braking operation time in current limit mode can be set by connecting a capacitor between SCP and GND pins. This setting is the same as the time setting required to turn off the outputs when an output short-circuit occurs as explained in the section entitled "Output Short-circuit Protection Function." See "Output Short-circuit Protection Function," for the settinig procedure. 3.Setting the current limit value The current limit value of the DCM driver is determined by the VREF voltage and the resistance (RNF) connected across the RNF and GND pins using the following formula : Ilimit [A] = (VREF [V] /5) /RNF [Ω]) Assuming VREF = 1.5V, RNF = 0.2Ω, the current limit is : Ilimit = 1.5V/5/0.2Ω = 1.5A No.A1172-8/13 LV8761V Output short-circuit protection function The LV8761V incorporates an output short-circuit protection circuit that turns off the output to prevent the IC from fatal damage when the output is short-circuited due to short-to-power or short-to-ground fault. Either the “latch-type,” in which the output off state is latched when the short-circuit protection circuit is activated, or “auto reset-type,” in which the output on/off states are repeated when the short-circuit protection circuit is activated, can be selected. EMM Pin L H Short-circuit Protection Mode Latch type Auto reset type 1.Protection function operation (Latch method) The short-circuit protection circuit is activated when it detects the output short-circuit state. If the short-circuit state continues for the internally preset period (≈ 4μs), the protection circuit turns off the output from which the short-circuit state has been detected. Then it turns the output on again after a lapse of the timer latch time described later. If the short-circuit state is still detected, it changes all the outputs to the standby mode and retains the state. The latched state is released by setting the PS to L. Output ON H-bridge output state Output ON Output OFF Standby state Threshold voltage SCP voltage 4μs Short-circuit detection state Short- Release circuit Short-circuit Internal counter 1st counter start 1st counter 1st counter stop start 1st counter end 2nd counter start 2nd counter end 2.How to set the SCP pin constant (timer latch-up setting) The user can set the time at which the outputs are turned off when a short-circuit occurs by connecting a capacitor across the SCP and GND pins. The value of the capacitor can be determined by the following formula : Timer latch-up : Tocp Tocp ≈ C × V/I [s] V : Comparator threshold voltage (1V typical) I : SCP charge current (5μA typical) When a capacitor with a capacitance of 50pF is connected across the SCP and GND pins, for example, Tscp is calculated as follows : Tscp = 50pF × 1V/5μA = 10μs No.A1172-9/13 LV8761V 3.Auto Reset Type The sequences up to the detection of an output short-circuit state are identical to those which are explained in Section 1, "Protection Function Operation (Latch Type). After output is turned off on detection of an output short-circuit condition, the internal counter starts counting and repeats turning on and off the output as shown in the figure below. This state continues until the overcurrent state is eliminated. Exceeding the over-current detection current ON Output current OFF ON OFF ON SCP voltage Detection current sequences 2ms (TYP) 4.Unusual Condition Warning Output Pin (EMOT) The LV8761V is provided with the EMOT pin which notifies the CPU of an unusual condition if the protection circuit operates by detecting an abnormal condition of the IC. This pin is of the open-drain output type and requires a pull-up resistor when to be used. The EMOT pin is placed in the ON state when one of the following conditions occurs. 1. Shorting-to-power or shorting-to-ground occurs at the output pin and the output short-circuit protection circuit is activated. 2. The IC junction temperature rises and the thermal protection circuit is activated. The EMOT pin is set to the OFF state when the relevant protection operation is eliminated. No.A1172-10/13 LV8761V Application Circuit Example (When you use the current limit function) -+ 1 VCC 2 PGND 3 NC 4 NC 5 NC 6 OUTB 7 OUTB 8 RNF EMM 36 SCP 35 Control input 100pF VREF 34 NC 33 NC 32 NC 31 IN2 30 Control input IN1 29 LV8761V 9 RNF M 10 VM -+ 11 VM 12 OUTA 13 OUTA 14 NC 15 NC 16 NC Control input 17 PS 18 GND NC 28 REG5 27 CP1 26 CP2 25 NC 24 GND 23 NC 22 VG 21 NC 20 EMOT 19 Monitor Setting the current limit value When VCC = 5V, Vref = 1.5V Ilimit = Vref/5/RNF = 1.5V/5/0.22Ω = 1.36A Setting the current limit regeneration time and short-circuit detection time Tscp ≈ C × V/I = 100pF × 1V/5μA = 20μs No.A1172-11/13 LV8761V (When you do not use the current limit function) -+ 1 VCC 2 PGND 3 NC 4 NC 5 NC 6 OUTB 7 OUTB 8 RNF EMM 36 SCP 35 Control input 100pF VREF 34 NC 33 NC 32 NC 31 IN2 30 Control input IN1 29 LV8761V 9 RNF M 10 VM -+ 11 VM 12 OUTA 13 OUTA 14 NC 15 NC 16 NC Control input 17 PS 18 GND NC 28 REG5 27 CP1 26 CP2 25 NC 24 GND 23 NC 22 VG 21 NC 20 EMOT 19 Monitor Setting at short-circuit state detection time TSCP≒C·V/I =100pF·1V/5µA =20µs *Do the following processing when you do not use the current limit function. · It is short between RNF-GND. · The terminal VREF is hung on suitable potential of VCC or less. PS No.A1172-12/13 LV8761V 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. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. 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 March, 2010. Specifications and information herein are subject to change without notice. PS No.A1172-13/13