LV8741V-TLM-E ON Semiconductor, LV8741V-TLM-E Datasheet
LV8741V-TLM-E
Specifications of LV8741V-TLM-E
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LV8741V-TLM-E Summary of contents
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... Ordering number : ENA0814B LV8741V Overview The LV8741V is a PWM current-control stepping motor driver IC. Features • Single-channel PWM current control stepping motor driver (selectable with DC motor driver channel 2) incorporated. • BiCDMOS process IC • On resistance (upper side : 0.5Ω ; lower side : 0.5Ω ; total of upper and lower : 1.0Ω 25° 1.5A) • ...
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... Chopping frequency Fchop Current setting reference voltage VRF00 VRF01 VRF10 VRF11 VREF pin input current Iref LV8741V Conditions Independent IC * Our recommended two-layer substrate *1, *2 Conditions Conditions ST = ”L” ”H” ”H”, no load ST = ”L” ”H” ”H”, no load ...
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... Oscillator frequency Fosc Output short-circuit protection EMO pin saturation voltage Package Dimensions unit : mm (typ) 3333 TOP VIEW 15 0.22 0.65 (0.68) SIDE VIEW LV8741V Conditions -1mA VG = 0.1µF RCHOP = 20kΩ Iemo = 1mA SIDE VIEW BOTTOM VIEW 23 (4.7) 22 0.2 SANYO : SSOP44K(275mil) Ratings Unit ...
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... Substrate Specifications (Substrate recommended for operation of LV8741V) Size : 90mm × 90mm × 1.7mm (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 95% or more of the Exposed Die-Pad is wet ...
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... Pin Assignment VREG5 ATT2 ATT1 EMO EMM RCHOP MONI STP/DC22 FR/DC21 MD2/DC12 MD1/DC11 VREF LV8741V CP2 1 CP1 CEM LV8741V 12 RST Top view PGND GND OUT1A 36 VM1 35 RF1 34 OUT1B 33 OUT2A 32 VM2 31 RF2 30 OUT2B GND SGND No.A0814-5/25 ...
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... Block Diagram stage stage stage stage LV8741V preamplifier Output preamplifier Output preamplifier Output preamplifier Output No.A0814-6/25 ...
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... Charge pump capacitor connection pin 8 EMO Output short-circuit state warning output pin 10 EMM Overcurrent mode switching pin 9 CEM Pin to connect the output short-circuit state detection time setting capacitor 27,40 GND Ground 7, 17, 24 Connection 25, 26, 28, (No internal connection to the IC) 29, 38, 39, 41 LV8741V Description No.A0814-7/25 ...
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... Equivalent Circuits Pin No. Pin 5 ATT2 6 ATT1 10 EMM 13 RST 14 STP/DC22 15 FR/DC21 16 MD2/DC12 18 MD1/DC11 OUT2B 31 RF2 32 VM2 33 OUT2A 34 OUT1B 35 RF1 36 VM1 37 OUT1A 42 PGND 1 CP2 2 CP1 VREG5 GND LV8741V Equivalent Circuit V CC 5kΩ 100kΩ GND GND 100Ω Continued on next page. No.A0814-8/25 ...
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... Continued from preceding page. Pin No. Pin 22 VREF 4 VREG5 12 MONI LV8741V Equivalent Circuit V CC 500Ω GND VM GND V CC GND 2kΩ 78kΩ 26kΩ 500Ω Continued on next page. No.A0814-9/25 ...
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... Continued from preceding page. Pin No. Pin 8 EMO 9 CEM 11 RCHOP LV8741V Equivalent Circuit V CC GND V CC 500Ω GND V CC GND 1kΩ No.A0814-10/25 ...
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... RF resistance value. I OUT = (VREF/3 × Voltage setting ratio)/RF resistor (Example) When VREF = 1.5V, setting current ratio = 100% [(ATT1, ATT2) = (Low, Low)] and RF resistor = 0.5Ω, the following output current flows : I OUT = 1.5V/3 × 100%/0.5Ω LV8741V Mode Internal regulator Standby Operating ...
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... When the OE pin is set Low, 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 High, the output level conforms to the excitation position proceeded by the STEP input. LV8741V Operating mode Normal operation Reset state ...
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... Setting the chopping frequency For constant-current control, chopping operation is made with the frequency determined by the external resistor (connected to the RCHOP pin). The chopping frequency to be set with the resistance connected to the RCHOP pin (pin 11 shown below. LV8741V Operating mode Clockwise (CW) CW mode ...
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... W1-2 phase (%) Channel 1 Channel 2 θ0 0 100 θ1 33.3 100 θ2 66.7 66.7 θ3 100 33.3 θ4 100 LV8741V θ 3 33.3 Channel 2 current ratio (%) 1-2 phase (%) 1-2 phase full torque (%) Channel 1 Channel 2 Channel 1 0 100 66.7 66.7 0 100 0 θ2 (2-phase/ 1-2 phase full torque) θ ...
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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 full torque (CW mode) STEP MONI (%) 100 I1 0 -100 (%) 100 I2 0 -100 LV8741V No.A0814-15/25 ...
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... STEP MONI (%) 100 I1 0 -100 (%) 100 I2 0 -100 W1-2 phase excitation (CW mode) STEP MONI (%) 100 I1 0 -100 (%) 100 I2 0 -100 LV8741V No.A0814-16/25 ...
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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. LV8741V Set current FAST CHARGE ...
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... Ilimit = (VREF/3 × Current setting ratio) /RF resistance (Example) When VREF = 1.5V, setting current ratio = 100% [(ATT1, ATT2) = (Low, Low)] and RNF1 (2) = 0.5Ω, the current limit value is as follows : Ilimit = 1.5V/3 × 100%/0.5Ω LV8741V Output OUT1 (2) B OFF OFF ...
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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 l OUT 1 0 -100 (%) 100 l OUT 2 0 -100 1-2 phase excitation full torque (CW mode) DC11 DC21 DC12 DC22 (%) 100 l1 0 -100 (%) 100 l2 0 -100 LV8741V No.A0814-19/25 ...
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... In this method, latch is released by setting PS = “L” (4) Output short-circuit condition warning output pin EMO, warning output pin of the output short-circuit protection circuit open-drain output. EMO outputs ON when output short-circuit is detected. LV8741V State Auto reset method Latch method OFF ...
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... OE pin High. In addition, when controlling the stepping motor and DC motor driver with parallel input, set the ST pin High, wait for the tONG time duration or longer, and then start the control for each channel. LV8741V Tscp ≈ Td+C × V/I [sec Internal delay time TYP 4µ Threshold voltage of comparator TYP CEM charge current TYP 2.5µ ...
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... Place the RF resistor as near to the IC as possible, and connect it to the GND stabilization point using a thick independent line. • When thermal radiation is necessary for the exposed die-pad on the bottom of the IC, solder it to GND. Also, do not connect the exposed die-pad to other than GND. LV8741V 10µs or longer No.A0814-22/25 ...
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... Auto recovery-type output short-circuit protection function (EMM = Low) • Reset function fixed to normal operation (RST = High) • Chopping frequency : 37kHz (RCHOP = 43kΩ) ATT1 ATT2 The set current value is as follows : I OUT = (VREF/3 × Voltage setting ratio) /0.25Ω LV8741V 1 CP2 CP1 PGND VREG5 NC ...
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... Auto recovery-type output short-circuit protection function (EMM = Low) • Output enable function fixed to output ON state (OE = High) • Current limit reference voltage setting = 100% (ATT1 = Low, ATT2 = Low) • Chopping frequency : 37kHz (RCHOP = 43kΩ) The current limit value is as follows : Ilimit = (VREF/3) /0.25Ω LV8741V 1 CP2 VM 44 CP1 ...
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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 January, 2008. Specifications and information herein are subject to change without notice. LV8741V PS No.A0814-25/25 ...