Ordering number : ENA1563 Bi-CMOS LSI LV8746V PWM Constant-Current Control Stepping Motor Driver Overview The LV8746V is a stepping motor driver corresponding to the W1-2 aspect excitation drive that the selection of CLK-IN input and a parallel input is possible. It is ideally suited for driving brushed DC motors and stepping motors used in office equipment and amusement applications. Features • PWM current control stepping motor driver incorporated. • BiCDMOS process IC • Low on resistance (upper side : 0.84Ω ; lower side : 0.7Ω ; total of upper and lower : 1.54Ω ; Ta = 25°C, IO = 1A) • Excitation mode can be set to 2-phase, 1-2 phase Full torque, 1-2 phase, or W1-2 phase • CLK-IN input and a parallel input can be selected. • Motor current selectable in four steps • Output short-circuit protection circuit (selectable from latch-type or auto-reset-type) incorporated • Unusual condition warning output pins • No control power supply required Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VM max Output peak current IO peak Output current IO max Logic input voltage VIN EMO input voltage Vemo -0.3 to +6 V tw ≤ 10ms, duty 20% 38 V 1.2 A 1 A -0.3 to +6 V Continued on next page. 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. O1609 SY 200900911-S00004 No.A1563-1/24 LV8746V Continued from preceding page. Parameter Symbol Allowable power dissipation Pd max Operating temperature Storage temperature Conditions Ratings Ta ≤ 85°C * Unit 3.1 W Topr -20 to +85 °C Tstg -55 to +150 °C * Specified circuit board : 90.0mm×90.0mm×1.6mm, glass epoxy 2-layer board, with backside mounting. Allowable Operating Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage range VM 9 to 35 V Logic input voltage VIN 0 to 5.5 V VREF input voltage range VREF 0 to 3 V Electrical Characteristics at Ta = 25°C, VM = 24V, VREF = 1.5V Parameter Symbol Conditions Ratings min typ Unit max Standby mode current drain IMst ST = “L” 190 300 μA Current drain IM ST = “H”, OE = “L”, with no load 3.3 5 mA VREG5 output voltage Vreg5 IO = -1mA 4.5 5 5.5 V Thermal shutdown temperature TSD Design guarantee 150 180 210 °C Thermal hysteresis width ΔTSD Design guarantee °C 40 Motor driver Output on resistance Ronu IO = 1A, Upper-side on resistance 0.84 1.1 Ω Rond IO = 1A, Lower-side on resistance 0.7 0.9 Ω 50 μA 1.0 1.3 V 3 8 15 μA 50 78 110 μA 3 8 15 μA 30 50 70 μA 0.8 V 0.31 V V Output leakage current IOleak Diode forward voltage VD ID = -1A Logic pin input current(ST) IINL VIN = 0.8V Logic pin input current(other ST) IINH VIN = 5V IINL VIN = 0.8V IINH VIN = 5V Logic high-level input voltage VINH Logic low-level input voltage VINL W1-2-phase Vtdac0_W drive Current setting comparator threshold 1-2 phase drive 2.0 Step 0 (When initialized : channel 1 V 0.29 0.3 comparator level) Vtdac1_W Step 1 (Initial state+1) 0.29 0.3 0.31 Vtdac2_W Step 2 (Initial state+2) 0.185 0.2 0.215 V Vtdac3_W Step 3 (Initial state+3) 0.09 0.1 0.11 V Vtdac0_M Step 0 (When initialized : channel 1 0.29 0.3 0.31 V 0.185 0.2 0.215 V 0.29 0.3 0.31 V Step 2 (Initial state+1) 0.29 0.3 0.31 V comparator level) voltage (CLK-IN input) 1-2 phase drive Vtdac2_M Step 2 (Initial state+1) Vtdac0_H Step 0 (When initialized : channel 1 comparator level) ( Full torque) Vtdac2_H Vtdac2_F Step 2 0.29 0.3 0.31 V Current setting comparator 2 phase drive Vtdac11 I01 = H , I11 = H 0.29 0.3 0.31 V threshold voltage Vtdac01 I01 = L , I11 = H 0.185 0.2 0.215 V V (parallel input) Vtdac10 I01 = H , I11 = L 0.09 0.1 0.11 Current setting comparator Vtatt00 ATT1 = L, ATT2 = L 0.29 0.3 0.31 V threshold voltage Vtatt01 ATT1 = H, ATT2 = L 0.185 0.2 0.215 V Vtatt10 ATT1 = L, ATT2 = H 0.135 0.15 0.165 V 0.09 0.1 0.11 45 62.5 75 (current attenuation rate switching) Vtatt11 ATT1 = H, ATT2 = H Chopping frequency Fchop Rchop = 20KΩ VREF pin input current Iref VREF = 1.5V -0.5 V kHz μA Continued on next page. No.A1563-2/24 LV8746V Continued from preceding page. Parameter Symbol Ratings Conditions min typ Unit max Charge pump VG output voltage VG Rise time tONG VG = 0.1μF 28 Oscillator frequency Fosc Rchop = 20KΩ Vsatemo Iemo = 1mA CEM pin charge current Icem Vcem = 0V CEM pin threshold voltage Vthcem 90 28.75 30 V 0.5 mS 125 150 kHz 80 160 mV Output short-circuit protection EMO pin saturation voltage 7 10 13 μA 0.8 1.0 1.2 V Package Dimensions unit : mm (typ) 3333 TOP VIEW SIDE VIEW BOTTOM VIEW 15.0 44 23 (3.5) 0.5 5.6 7.6 (4.7) 0.22 22 0.2 1.7MAX 0.65 SIDE VIEW 0.1 (1.5) 1 (0.68) SANYO : SSOP44K(275mil) No.A1563-3/24 LV8746V 4.0 3.10 *1 With components mounted on the exposed die-pad board *2 With no components mounted on the exposed die-pad board Two-layer circuit board 1 *1 3.0 2.20 2.0 Two-layer circuit board 2 *2 1.61 1.14 1.0 0 —20 0 20 40 60 80 100 Substrate Specifications (Substrate recommended for operation of LV8746V) Size : 90mm × 90mm × 1.6mm (two-layer substrate [2S0P]) Material : Glass epoxy Copper wiring density : L1 = 85% / L2 = 90% 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.A1563-4/24 LV8746V Pin Assignment VG 1 44 NC VM 2 43 OUT1A CP2 3 42 PGND1 CP1 4 41 NC VREG5 5 40 NC ATT2 6 39 NC ATT1 7 38 VM1 EMO 8 37 NC CEM 9 36 RF1 NC 10 35 NC RCHOP 11 NC 12 34 OUT1B LV8746V RST/PH1 13 33 OUT2A 32 NC STP/I01 14 31 RF2 FR/I11 15 30 NC MD2/PH2 16 29 VM2 MD1/I02 17 28 NC DM 18 27 NC OE/I12 19 26 NC ST 20 25 PGND2 VREF 21 24 OUT2B GND 22 23 NC Top view No.A1563-5/24 PGND VM VREF VREG5 + - TSD + - RCHOP Oscillation circuit Regulator ATT2 Attenuator (4 levels selectable) ST ATT1 Charge pump Output preamplifier stage RF1 OUT B VM1 VM2 OUT2A RF2 Current selection (W1-2/1-2/ 1-2Full/2) Current selection (W1-2/1-2 1-2Full/2) FR/ FTP/ RST/ OE/ MD1/ MD2/ DM I11 I01 PH1 I12 I02 PH2 + Output control logic OUT2B + OUT A Output preamplifier stage VG Output preamplifier stage CP1 Output preamplifier stage CP2 CEM EMO LV8746V Block Diagram No.A1563-6/24 LV8746V Pin Functions Pin No. Pin Name Pin Functtion 6 ATT2 Motor holding current switching pin. 7 ATT1 Motor holding current switching pin. 13 RST/PH1 CLK-IN is input , RESET input pin / Equivalent Circuit Parallel is input , Channel 1 VREG5 forward/reverse rotation pin. 14 STP/I01 CLK-IN is input , STEP signal input pin / Parallel is input , Channel 1 output control input pin. 15 FR/I11 CLK-IN is input , forward/reverse signal input pin / Parallel is input , Channel 1 output control input pin. 16 MD2/PH2 CLK-IN is input , Excitation mode switching pin / Parallel is input , Channel 2 forward/reverse rotation pin. 17 MD1/I02 CLK-IN is input , Excitation mode switching pin / Parallel is input , Channel 2 output control input pin. 18 DM Drive mode switching pin. 19 OE/I12 CLK-IN is input , output enable signal GND input pin / Parallel is input , Channel 2 output control input pin. 20 ST Chip enable pin. VREG5 GND 24 OUT2B Channel 2 OUTB output pin. 25 PGND2 Power system ground pin2. 42 PGND1 Power system ground pin1. 29 VM2 Channel 2 motor power supply 31 RF2 33 OUT2A Channel 2 OUTA output pin. 34 OUT1B Channel 1 OUTB output pin. 36 RF1 Channel 1 current-sense resistor 38 VM1 Channel 1 motor power supply pin. 43 OUT1A Channel 1 OUTA output pin. 38 29 connection pin. Channel 2 current-sense resistor connection pin. 43 33 34 24 connection pin. 25 42 36 31 GND Continued on next page. No.A1563-7/24 LV8746V Continued from preceding page. Pin No. Pin Name Pin Functtion 1 VG Charge pump capacitor connection pin. 2 VM Motor power supply connection pin. 3 CP2 Charge pump capacitor connection pin. 4 CP1 Charge pump capacitor connection pin. Equivalent Circuit 4 2 3 1 VREG5 100Ω GND 21 VREF Constant current control reference voltage input pin. VREG5 GND 5 VREG5 Internal power supply capacitor connection pin. VM GND 8 EMO Output short-circuit state warning output pin. VREG5 GND Continued on next page. No.A1563-8/24 LV8746V Continued from preceding page. Pin No. 9 Pin Name CEM Pin Functtion Pin to connect the output short-circuit state detection time setting capacitor. Equivalent Circuit VREG5 GND 11 RCHOP Chopping frequency setting resistor connection pin. VREG5 GND 22 10,12 23,26 GND Ground. NC No Connection (No internal connection to the IC) 27,28 30,32 35,37 39,40 41,44 No.A1563-9/24 LV8746V Description of operation Input Pin Function (1) Chip enable function This IC is switched between standby and operating mode by setting the ST pin. In standby mode, the IC is set to power-save mode and all logic is reset. In addition, the internal regulator circuit and charge pump circuit do not operate in standby mode. ST Mode Internal regulator Low or Open Standby mode Standby Charge pump Standby High Operating mode Operating Operating (2) Input control method switching pin function The IC input control method is switched by setting the DM pin. The CLK-IN input control and the parallel input control can be selected by setting the DM pin. DM Input control method Low or Open CLK-IN input control High Parallel input control CLK-IN input control (DM = Low or Open) (1) STEP pin function Operating mode Input ST STP Low * Standby mode High Excitation step proceeds High Excitation step is kept (2) Excitation mode setting function MD1 MD2 Excitation mode Initial position Channel 1 Channel 2 Low Low 2 phase excitation 100% -100% High Low 1-2 phase excitation (Full torque) 100% 0% Low High 1-2 phase excitation 100% 0% High High W1-2 phase excitation 100% 0% This is the initial position of each excitation mode in the initial state after power-on and when the counter is reset. (3) Setting constant-current control reference voltage ATT1 ATT2 Current setting reference voltage Low Low VREF / 5 x 100% High Low VREF / 5 x 67% Low High VREF / 5 x 50% High High VREF / 5 x 33% The voltage input to the VREF pin can be switched to four-step settings depending on the statuses of the two inputs, ATT1 and ATT2. This is effective for reducing power consumption when motor holding current is supplied. Set current value calculation method. The reference voltage is set by the voltage applied to the VREF pin and the two inputs ATT1 and ATT2. The output current (output current at a constant-current drive current ratio of 100%) can be set from this reference voltage and the RF resistance value. IOUT = (VREF/5) ×(current attenuation ratio)/ RF resistance Example : At VREF of 1.5V, a reference voltage setting of 100% [(ATT1, ATT2) = (L, L)] and an RF resistance of 0.5Ω, the output current is set as shown below. IOUT = 1.5V/5 × 100%/0.5Ω = 0.6A No.A1563-10/24 LV8746V (4) Reset function RST Operating mode Low Normal operation High Reset state RST RESET STEP 1ch output 0% 2ch output Initial state When the RST pin is set to High, the excitation position of the output is forcibly set to the initial state. When RST is then set to Low, the excitation position is advanced by the next STEP input. (5) Output enable function OE Operating mode Low Output ON High Output OFF OE Power save mode STEP 1ch output 0% 2ch output Output is high-impedance When the OE pin is set High, the output is forced OFF and goes to high impedance. However, the internal logic circuits are operating, so the excitation position proceeds when the STEP signal is input. Therefore, when OE is returned to Low, the output level conforms to the excitation position proceeded by the STEP input. No.A1563-11/24 LV8746V (6) Forward/reverse switching function FR Operating mode Low CW High CCW FR CW mode CCW mode CW mode STEP Excitation position (1) (2) (3) (4) (5) (6) (5) (4) (3) (4) (5) 1ch output 2ch output The internal D/A converter proceeds by one bit at the rising edge of the input STEP pulse. In addition, CW and CCW mode are switched by setting the FR pin. In CW mode, the channel 2 current phase is delayed by 90° relative to the channel 1 current. In CCW mode, the channel 2 current phase is advanced by 90° relative to the channel 1 current. (7) Chopping frequency setting For constant-current control, chopping operation is made with the frequency determined by the external resistor The chopping frequency to be set with the resistance connected to the RCHOP pin (pin 11) is as shown below. Chopping frequenccy setting(reference data) 100 Fchop(kHz) 80 60 40 20 0 15 25 35 45 55 No.A1563-12/24 LV8746V (8) Output current vector locus (one step is normalized to 90 degrees) 100.0 Channel 1 phase current ratio (%) (2-phase / 1-2 phase Full torque) 66.7 33.3 0.0 0.0 33.3 66.7 100.0 Channel 2 current ratio (%) Setting current ration in each excitation mode STEP W1-2 phase (%) Channel 1 1-2 phase (%) Channel 2 Channel 1 θ0 0 100 θ1 33.3 100 θ2 66.7 66.7 θ3 100 33.3 θ4 100 0 1-2 phase full torque (%) Channel 2 Channel 1 2-phase (%) Channel 2 Channel 1 0 100 0 100 66.7 66.7 100 100 100 0 100 0 100 Channel 2 100 No.A1563-13/24 LV8746V (9) Typical current waveform in each excitation mode 2-phase excitation (CW mode) STEP (%) 100 l1 0 -100 (%) 100 I2 0 -100 1-2 phase excitation Full torque (CW mode) STEP (%) 100 I1 0 -100 (%) 100 I2 0 -100 No.A1563-14/24 LV8746V 1-2 phase excitation Full torque (CW mode) STEP (%) 100 I1 0 -100 (%) 100 I2 0 -100 W1-2 phase excitation (CW mode) STEP (%) 100 I1 0 -100 (%) 100 I2 0 -100 No.A1563-15/24 LV8746V (10) Current control operation specification (Sine wave increasing direction) STEP Set current Set current Coil current Forced CHARGE section fchop Current mode CHARGE SLOW FAST CHARGE SLOW FAST (Sine wave decreasing direction) STEP Set current Coil current Forced CHARGE section Set current fchop Current mode CHARGE SLOW FAST Forced CHARGE section FAST CHARGE SLOW In each current mode, the operation sequence is as described below : • At rise of chopping frequency, the CHARGE mode begins.(The section in which the CHARGE mode is forced regardless of the magnitude of the coil current (ICOIL) and set current (IREF) exists for 1/16 of one chopping cycle.) • The coil current (ICOIL) and set current (IREF) are compared in this forced CHARGE section. When (ICOIL<IREF) state exists in the forced CHARGE section ; CHARGE mode up to ICOIL ≥ IREF, then followed by changeover to the SLOW DECAY mode, and finally by the FAST DECAY mode for the 1/16 portion of one chopping cycle. When (ICOIL<IREF) state does not exist in the forced CHARGE section; The FAST DECAY mode begins. The coil current is attenuated in the FAST DECAY mode till one cycle of chopping is over. Above operations are repeated. Normally, the SLOW (+FAST) DECAY mode continues in the sine wave increasing direction, then entering the FAST DECAY mode till the current is attenuated to the set level and followed by the SLOW DECAY mode. No.A1563-16/24 LV8746V Parallel input control (DM-High) (1) Parallel input control logic I01(02) I11(12) Output current (IO) Low Low 0 High Low IO = ((VREF/5)/RF)×1/3 Low High IO = ((VREF/5)/RF)×2/3 High High IO = (VREF/5)/RF PH1(2) current direction Low OUTB → OUTA High OUTA → OUTB (2) Setting constant-current control reference voltage The constant current control standard voltage setting function is the same specification as the CLK-IN input control. (3) Current control function The current control function is the same use as the CLK-IN input control. No.A1563-17/24 LV8746V (4) Typical current waveform in each excitation mode when stepping motor parallel input control 2-phase excitation (CW mode) H I01,I11 PH1 H I02,I12 PH2 (%) 100 I1 0 -100 (%) 100 I2 0 -100 1-2 phase excitation full torque (CW mode) I01 I11 PH1 I02 I12 PH2 (%) 100 l1 0 -100 (%) 100 l2 0 -100 No.A1563-18/24 LV8746V 1-2 phase excitation (CW mode) I01 I11 PH1 I02 I12 PH2 (%) 100 I1 0 -100 (%) 100 I2 0 -100 W1-2 phase excitation (CW mode) I01 I11 PH1 I02 I12 PH2 (%) 100 I1 0 -100 (%) 100 I2 0 -100 No.A1563-19/24 LV8746V Output short-circuit protection function This IC incorporates an output short-circuit protection circuit that, when the output has been shorted by an event such as shorting to power or shorting to ground, to prevent the thing that IC destroys, the output short-circuit protection circuit that turns off the output is built into. (1) Protection function operation(Latch type) The detection of the output short-circuited state by the IC causes the output short-circuit protection circuit to be activated. When the short-circuited state continues for the period of time set using the internal timer (approximately 4μs), the output in which the short-circuiting has been detected is first set to OFF. After this, the output is set to ON again as soon as the timer latch time (Tcem) described later has been exceeded, and if the short-circuited state is still detected, all the outputs of the channel concerned are switched to the standby mode, and this state is held. This state is released by setting ST to low. Output ON H-bridge output state Output ON Output OFF Standby state Threshold voltage 4μs CEM voltage 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) Unusual condition warning output pins (EMO) IC is provided with the EMO pin which notifies the CPU of an unusual condition if the protection circuit operates by detecting an unusual condition of the IC. This pin is of the open-drain output type and when an unusual condition is detected, the EMO output is placed in the ON (EMO = Low) state. Furthermore, the EMO pin is placed in the ON state when one of the following conditions occurs. 1. Shorting-to-power, shorting-to-ground, or shorting-to-load 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. (3) Timer latch time (Tcem) The time taken for the output to be set to OFF when the output has been short-circuited can be set using capacitor Ccem, connected between the CEM pin and GND. The value of capacitor Ccem is determined by the formula given below. Timer latch : Tcem Tcem ≈ Ccem × Vtcem/Icem [sec] Vtcem : Comparator threshold voltage, typ 1V Icem : CEM pin charge current, typ 10μA No.A1563-20/24 LV8746V Charge Pump Circuit When the ST pin is set High, the charge pump circuit operates and the VG pin voltage is boosted from the VM voltage to the VM + VREG5 voltage. If the VG pin voltage is not boosted sufficiently, the output cannot be controlled, so be sure to provide a wait time of tONG or more after setting the ST pin High before starting to drive the motor. ST VG pin voltage VM+VREG5 VM+4V VM tONG VG Pin Voltage Schematic View No.A1563-21/24 LV8746V Application Circuit Example • Clock Inn mode application circuit - + Ligic input 5V 100pF 1 VG NC 44 2 VM OUT1A 43 3 CP2 PGND1 42 4 CP1 NC 41 5 VREG5 NC 40 6 ATT2 NC 39 7 ATT1 VM1 38 8 EMO NC 37 9 CEM RF1 36 11 RCHOP 12 NC 13 RST/PH1 14 STP/I01 Ligic input 15 FR/I11 16 MD2/PH2 Ligic input LV8746V 10 NC NC 35 OUT1B 34 OUT2A 33 NC 32 RF2 31 NC 30 VM2 29 17 MD1/I02 NC 28 18 DM NC 27 19 OE/I12 NC 26 20 ST PGND2 25 21 VREF OUT2B 24 22 GND M NC 23 The setting conditions for the above circuit diagram example are as follows : • 2-phase excitation (MD1/I02 = Low, MD2/PH2 = Low) • Reset function fixed to normal operation (RST = Low) • Chopping frequency : 62.5kHz (RCHOP = 20kΩ) ATT1 ATT2 Current setting reference voltage Low Low VREF/5×100% High Low VREF/5×67% Low High VREF/5×50% High High VREF/5×33% The set current value is as follows : IOUT = (VREF/5× Voltage setting ratio) / RF Example ) When ATT=Low,ATT2=Low (VREF = 1.5V,RF=0.51Ω) IOUT = (1.5V / 5 × 1 ) / 0.51Ω = 0.6A No.A1563-22/24 LV8746V • DC motor driver circuit (DM = High, and the current limit function is in use.) - + Logic input 5V 100pF 1 VG NC 44 2 VM OUT1A 43 3 CP2 PGND1 42 4 CP1 NC 41 5 VREG5 NC 40 6 ATT2 NC 39 7 ATT1 VM1 38 8 EMO NC 37 9 CEM RF1 36 11 RCHOP 12 NC Channel 1 control logic input Channel 2 control logic input Logic input 13 RST/PH1 LV8746V 10 NC 14 STP/I01 NC 35 OUT1B 34 OUT2A 33 NC 32 M RF2 31 15 FR/I11 NC 30 16 MD2/PH2 VM2 29 17 MD1/I02 NC 28 18 DM NC 27 19 OE/I12 NC 26 20 ST PGND2 25 21 VREF OUT2B 24 22 GND NC 23 The setting conditions for the above circuit diagram example are as follows : • Chopping frequency : 62.5kHz (RCHOP = 20kΩ) I01(02) I11(12) Output current (IO) Low Low 0 High Low IO = ((VREF/5) / RF) × 1/3 Low High IO = ((VREF/5) / RF) × 2/3 High High IO = (VREF/5) / RF Example ) When ATT=Low,ATT2=Low,I01(02)=High,I11(12)=High (VREF = 1.5V,RF=0.51Ω) IOUT = (1.5V / 5 × 1 ) / 0.51Ω = 0.6A PH1(2) Low High Electrical current direction OUTB → OUTA OUTA → OUTB No.A1563-23/24 LV8746V 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. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. 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 Octorber, 2009. Specifications and information herein are subject to change without notice. PS No.A1563-24/24