LV8734V-TLM-H ON Semiconductor, LV8734V-TLM-H Datasheet

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... LV8734V Overview The LV8734V is a 2-channel H-bridge driver IC that can switch a stepping motor driver, which is capable of micro-step drive and supports 2W 1-2 phase excitation, and two channels of a brushed motor driver, which supports forward, reverse, brake, and standby of a motor ideally suited for driving brushed DC motors and stepping motors used in office equipment and amusement applications ...

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... Vtdac6_2W Vtdac7_2W W1-2 phase Vtdac0_W drive Vtdac2_W Vtdac4_W Vtdac6_W 1-2 phase drive Vtdac0_H Vtdac4_H 2 phase drive Vtdac4_F LV8734V Conditions * Conditions Conditions ST = “L” “H” “L”, with no load -1mA Design guarantee Design guarantee 1.5A, Upper-side on resistance 1.5A, Lower-side on resistance ID = -1. ...

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... Vtcem Package Dimensions unit : mm (typ) 3333 TOP VIEW 15 0.65 0.22 (0.68) SIDE VIEW LV8734V Conditions ATT1 = L, ATT2 = L ATT1 = H, ATT2 = L ATT1 = L, ATT2 = H ATT1 = H, ATT2 = H Cchop = 200pF VREF = 1.5V Imoni = 1mA VG = 0.1μF, 0.1μF between CP1-CP2 ST= “H” → VG=VM+4V Iemo = 1mA ...

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... Substrate Specifications (Substrate recommended for operation of LV8734V) Size : 90mm × 90mm × 1.6mm (two-layer substrate [2S0P]) Material : Glass epoxy Copper wiring density : 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 ...

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... Pin Assignment VREG5 ATT2 ATT1 EMO CEM EMM CHOP MONI RST/BLK STEP/DC22 FR/DC21 MD2/DC12 MD1/DC11 OE/CMK VREF GND LV8734V CP2 3 CP1 LV8734V Top view 44 OUT1A 43 OUT1A 42 PGND VM1 38 VM1 37 RF1 36 RF1 35 OUT1B 34 OUT1B 33 OUT2A 32 OUT2A 31 RF2 30 RF2 29 VM2 28 VM2 PGND 24 OUT2B ...

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... Block Diagram stage stage stage stage LV8734V preamplifier Output preamplifier Output preamplifier Output preamplifier Output No.A1824-6/26 ...

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... Channel 1 OUTB output pin. 36, 37 RF1 Channel 1 current-sense resistor connection pin. 38, 39 VM1 Channel 1 motor power supply pin. 43, 44 OUT1A Channel 1 OUTA output pin. LV8734V Equivalent Circuit VREG5 10kΩ 100kΩ GND VREG5 20kΩ 10kΩ 80kΩ GND ...

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... VREF Constant current control reference voltage input pin. 5 VREG5 Internal power supply capacitor connection pin. 8 EMO Output short-circuit state warning output pin. 12 MONI Position detection monitor pin. LV8734V Equivalent Circuit 4 VREG5 GND VREG5 500Ω GND VM GND VREG5 GND 100Ω ...

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... Chopping frequency setting capacitor connection pin. 19 OE/CMK Output enable signal input pin(STM) / Set capacitor connection pin of time of current LIMIT mask(DCM). 22 GND Ground. 26 Connection 40, 41 (No internal connection to the IC) LV8734V Equivalent Circuit VREG5 GND VREG5 GND VREG5 GND 500Ω 500Ω No.A1824-9/26 ...

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... Position detection monitoring function The MONI position detection monitoring pin open drian type. When the excitation position is in the initial position, the MONI output is placed in the ON state. (Refer to "Examples of current waveforms in each of the excitation modes.") LV8734V Mode Internal regulator Standby ...

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... In the stepping motor driver mode (DM = Low or Open) of this IC, the blanking time is fixed at approximately 1μs. In the DC motor driver mode (DM = High), the blanking time can be switched to one of two levels using the RST/BLK pin. (Refer to "Blanking time switching function.") LV8734V Current setting reference voltage attenuation ratio 100% ...

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... 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. LV8734V Operating mode Normal operation Reset state ...

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... Fchop = Ichop/ (Cchop × Vtchop × 2) (Hz) Ichop : Capacitor charge/discharge current, typ 10μA Vtchop : Charge/discharge hysteresis voltage (Vtup-Vtdown), typ 0.5V For instance, when Cchop is 200pF, the chopping frequency will be as follows : Fchop = 10μA/ (200pF × 0.5V × 50kHz LV8734V Operating mode Clockwise (CW) CW mode CCW mode ...

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... Channel 1 Channel 2 θ0 100 θ θ θ θ θ θ θ θ8 0 100 LV8734V θ 1 θ 2 θ 3 θ 4 33.3 Channel 2 current ratio (%) W1-2 phase (%) Channel 1 Channel 2 Channel 1 0 100 100 θ4' (2-phase) θ 5 θ 6 θ 7 θ 8 66.7 100.0 1-2 phase (%) ...

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... Typical current waveform in each excitation mode 2-phase excitation (CW mode) STEP MONI (%) 100 l1 0 -100 (%) 100 I2 0 -100 1-2 phase excitation (CW mode) STEP MONI (%) 100 I1 0 -100 (%) 100 I2 0 -100 LV8734V No.A1824-15/26 ...

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... W1-2 phase excitation (CW mode) STEP MONI (%) 100 I1 0 -100 (%) 100 I2 0 -100 2W1-2 phase excitation (CW mode) STEP MONI (%) 100 -50 -100 (%) 100 -50 -100 LV8734V No.A1824-16/26 ...

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... 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. LV8734V Set current FAST CHARGE ...

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... 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. Ilimit = 1.5V/5 × 100%/0.5Ω = 0.6A If, in this state, (ATT1, ATT2) has been set to (H, H), Ilimit will be as follows : Ilimit = 0.6A × 20% = 120mA LV8734V Output Mode OUT1 (2) B OFF ...

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... The time of the mask of current LIMIT function can be set by connecting capacitor C CMK between CMK pin - GND. Decide the value of capacitor C CMK according to the following expressions. Mask time : T CMK T CMK ≈ -C CMK × R × CMK / (I CMK × (sec) LV8734V brake forward brake ...

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... Typical current waveform in each excitation mode when stepping motor parallel input control 2-phase excitation (CW mode) DC11 DC12 DC21 DC22 (%) 100 I1 0 -100 (%) 100 I2 0 -100 1-2 phase excitation full torque (CW mode) DC11 DC12 DC21 DC22 (%) 100 l1 0 -100 (%) 100 l2 0 -100 LV8734V No.A1824-20/26 ...

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... H-bridge output state CEM voltage Short-circuit Short- Release detection state circuit Internal counter 1st counter 1st counter start stop LV8734V State Latch method Auto reset method Output ON Output OFF Threshold voltage Short-circuit 1st counter 1st counter start end Output ON Standby state ...

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... The overheating protection circuit doesn't secure protection and the destruction prevention of the set because it becomes operation by the area where ratings Tjmax=150°C of the junction temperature was exceeded. TSD = 180°C (typ) ΔTSD = 40°C (typ) LV8734V EMO : Unusual condition warning output pin MONI : Excitation initial position detection monitoring EMO : Channel 1 warning output pin ...

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... VM + VREG5 voltage. Because the output is not turned on if VM+4V or more is not pressured, the voltage of the VG pin recommends the drive of the motor to put the time of t ONG or more, and to begin. ST VM+VREG5 VM+4V VM LV8734V tONG VG Pin Voltage Schematic View VG pin voltage No.A1824-23/26 ...

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... I OUT = VREF/5/RF resistance = 1.0V/5/0.22Ω = 0.91A Chopping frequency setting Fchop = Ichop/ (Cchop × Vtchop × 10μA/ (180pF × 0.5V × 55kHz Timer latch time when the output is short-circuited Tcem = Ccem × Vtcem/Icem = 100pF × 1V/10μA = 10μs LV8734V 1 VG OUT1A 44 OUT1A 2 VM ...

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... Ilimit = VREF/5/RF resistance = 1.0V/5/0.22Ω = 0.91A Chopping frequency setting Fchop = Ichop/ (Cchop × Vtchop × 10μA/ (180pF × 0.5V × 55kHz Timer latch time when the output is short-circuited Tcem = Ccem × Vtcem/Icem = 100pF × 1V/10μA = 10μs LV8734V 1 VG OUT1A OUT1A ...

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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 October, 2010. Specifications and information herein are subject to change without notice. LV8734V PS No.A1824-26/26 ...