LB1924 Sanyo Semiconductor Corporation, LB1924 Datasheet
LB1924
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LB1924 Summary of contents
Page 1
... Ordering number : ENN5687B Overview The LB1924 is a direct PWM drive output driver IC appropriate for the power brushless motors used in office automation equipment. It includes a speed control circuit amplifier, and other peripheral circuits and allows a drive circuit to be implemented with a single IC. It allows ...
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... Output high-level voltage Output low-level voltage Oscillator frequency Amplitude [CROCK Oscillator] Output high-level voltage Output low-level voltage External capacitor charging current Oscillator frequency Amplitude [Current Limiter Operation] Limiter [Thermal Shutdown Operation] Thermal shutdown temperature Hysteresis LB1924 Symbol Conditions V max CC ≥ max ≤ 500 ms I ...
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... High-level input voltage range Low-level input voltage range Input open voltage Hysteresis High-level input current Low-level input current [Forward/Reverse Pin] Output high-level voltage Output low-level voltage Input open voltage Hysteresis Output high-level voltage Output low-level voltage LB1924 Symbol Conditions V IO(FG) I B(FG –0.2 mA OH(FG) FGO ...
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... With an arbitrarily large heat sink Independent IC Ambient temperature, Ta – °C Pin Assignment Truth Table Source F Sink IN 1 IN2 OUT2 OUT1 OUT3 OUT1 OUT3 OUT2 OUT1 OUT2 OUT1 OUT3 OUT2 OUT3 L L LB1924 No. 5687-4/11 ...
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... Equivalent Circuit Block Diagram LB1924 No. 5687-5/11 ...
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... In this external circuit, the line between the oscillator element and C3 (C2) is particularly subject to floating capacitance problems and requires special care. LB1924 . (This is because a through current will flow at the instant the lower side transistor Sample External Circuit Constants (Reference values) ...
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... V line to protect against destruction due to accidentally connecting the power supply with the polarity reversed, the power supply line voltage will be even more easily affected and an even larger capacitor will be required. LB1924 pin and ground diode is inserted in the power supply CC ...
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... The open state functions as a high-level input. Has a hysteresis of about 0.5 V. Low: Forward High or open: Reverse 8 S/S Start/stop control Low 1.5 V High: 3 REG The open state functions as a high-level input. Has a hysteresis of about 0.5 V. Low: Start High or open: Stop LB1924 Equivalent circuit . CC Continued on next page. No. 5687-8/11 ...
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... XI pin through a series resistor of about 13 kΩ, and leave the XO pin open. 11 INT Integrator amplifier output (speed control output) OUT 12 INT Integrator amplifier input PLL circuit output OUT LB1924 Equivalent circuit PWM comparator Continued on next page. No. 5687-9/11 ...
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... FG 19 CROCK Setting for the lock protection circuit operating time. An operating time of about 2.5 seconds can be set by connecting a capacitor of about 0.047 µF between the CROCK pin and ground. LB1924 FG Schmitt comparator FG reset circuit + and ground. IN Equivalent circuit Continued on next page ...
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... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of July, 1999. Specifications and information herein are subject to change without notice. LB1924 Equivalent circuit and a REG PS No. 5687-11/11 ...