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UC1625 Scheda tecnica(PDF) 4 Page - Texas Instruments |
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UC1625 Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 15 page 4 UC1625 UC2625 UC3625 22 26 25 2 Quad Sel RC-Osc PWM In 27 28 1 E/A Out E/A In(+) E/A In (–) OSC SQ R S Q R PWM CLOCK 24 SSTART 3 ISENSE 4 ISENSE1 5 ISENSE2 19 VCC 23 OV-Coast 6 Dir 7 Speed-In 2X 2.5V 250 Ω 2.9V Q1 10 µA 3.1V 9V DIRECTION LATCH 0.25V PWM CLOCK 8 H1 9 H2 L Q D L Q D L Q D 9 H3 +5V +5V +5V EDGE DETECT ONE SHOT 21 RC-Brake 2k 1V DIR COAST CHOP QUAD H2 H1 H3 BRAKE DECODER CROSS CONDUCTION PROTECTION LATCHES 18 PUA 17 PUB 16 PUC 14 PDA 13 PDB 12 PDC 15 GND 20 Tach-Out 11 Pwr Vcc +5V VREF 5V REFERENCE PWM CLOCK 1.75V ABS VALUE 0.2V BLOCK DIAGRAM ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications apply for: TA = 25 °C; Pwr VCC = VCC = 12V; ROSC = 20k to VREF; COSC = 2nF; RTACH = 33k; CTACH = 10nF; and all outputs unloaded. TA = TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Miscellaneous Output Turn-On Delay 1 µs Output Turn-Off Delay 1 µs UDG-99044 |
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