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LB1976 Datasheet(PDF) 6 Page - ON Semiconductor |
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LB1976 Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 10 page LB1976 No.6088-6/10 Continued from preceding page. Pin No. Pin name Pin voltage Function Equivalent circuit 4 F/R 0.0V to VCC Forward/reverse pin. Low: forward High or Open: reverse Typical threshold voltage for VCC = 5V: approx. 2.8V (low to high) approx. 2.3V (high to low) 4 3.8k Ω 20k Ω VCC 6 7 8 OUT1 OUT2 OUT3 Output pin 1. Output pin 2. Output pin 3. 13 RF 0.0V to VCC Output current detect pin. Connect resistor Rf between this pin and ground. Output current is limited to value set with VRF/Rf. (Current limiter operation) 14 VM Output block power supply. 6 200 Ω VCC 7 8 14 13 0.5V 11 GND3 Output block ground. 15 12 GND1 GND2 Ground for blocks other than the output block. 17 FG1 0.0V to VCC Speed pulse output pin 1 with built-in pull-up resistor. 16 FG2 0.0V to VCC Speed pulse output pin 2 with built-in pull-up resistor. 10k Ω VCC 16 17 22 23 20 21 18 19 IN1+ IN1- IN2+ IN2- IN3+ IN3- 1.5V to VCC − 1.5V Hall input pin. IN+ > IN- : High input IN+ < IN- : Low input 300 Ω VCC 21 19 23 300 Ω 20 18 22 26 OSC 1.0V to VCC This pin sets the PWM oscillation frequency. Connect a capacitor between this pin and ground. 2.1k Ω VCC 26 2V 200 Ω 94 μA Continued on next page. |
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