LV8712T-TLM-H ON Semiconductor, LV8712T-TLM-H Datasheet
LV8712T-TLM-H
Specifications of LV8712T-TLM-H
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LV8712T-TLM-H Summary of contents
Page 1
... Ordering number : ENA1674A LV8712T Overview The LV8712T is a stepping motor driver of the micro-step drive corresponding to supports 2W 1-2 phase excitation the best for the drive of the stepping motor for a scanner and a small printer. Features • Single-channel PWM constant-current control stepping motor driver incorporated. ...
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... Vtatt11 Chopping frequency Fchop CHOP pin threshold voltage V CHOP H V CHOP L CHOP pin charge/discharge current Ichop MONI pin saturation voltage Vsatmon LV8712T Conditions Conditions PS = “L”, no load PS = “L”, no load PS = “H”, no load PS = “H”, no load Design guarantee Design guarantee -1mA ...
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... Package Dimensions unit : mm (typ) 3260A 6 0.15 0.5 0.22 (0.5) SANYO : TSSOP24(225mil) Pin Assignment 24 1 LV8712T 1.5 1.35 1.0 0 LV8712T max - Ta Specified circuit board : 57.0 × 57.0 × 1.7mm 3 2-layer glass epoxy board Ambient temperature No.A1674-3/14 0.70 80 100 ...
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... Block Diagram LV8712T stage preamplifier Output stage preamplifier Output stage preamplifier Output stage preamplifier Output No.A1674-4/14 ...
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... OUT2A Channel 2 OUTA output pin. 20 OUT1B Channel 1 OUTB output pin. 21 RNF1 Channel 1 current-sense resistor connection pin. 23 OUT1A Channel 1 OUTA output pin.Power 6 VREF Constant current control reference voltage input pin. LV8712T Equivalent Circuit V CC GND GND GND GND 20 16 Continued on next page. ...
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... Continued from preceding page. Pin No. Pin Name Pin Functtion 3 REG5 Internal power supply capacitor connection pin. 5 MONI Position detection monitor pin. 10 CHOP Chopping frequency setting capacitor connection pin. LV8712T Equivalent Circuit V M GND GND V CC GND No.A1674-6/14 ...
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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 "(12) Examples of current waveforms in each of the excitation modes.") LV8712T Mode Internal regulator Standby ...
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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. LV8712T Operating mode Normal operation ...
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... I OUT = 1.0V/5 × 100%/0.5Ω = 400mA If, in this state, (ATT1, ATT2) is set to (H, H), IOUT will be as follows : I OUT = 400mA × 40% = 160mA In this way, the output current is attenuated when the motor holding current is supplied so that power can be conserved. LV8712T 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 LV8712T 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 LV8712T No.A1674-11/14 ...
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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 LV8712T No.A1674-12/14 ...
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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. LV8712T Set current BLANKING section FAST ...
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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, 2011. Specifications and information herein are subject to change without notice. LV8712T FR RST 1 24 ...