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UAC3092A-S20-T Datasheet(PDF) 2 Page - Unisonic Technologies |
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UAC3092A-S20-T Datasheet(HTML) 2 Page - Unisonic Technologies |
2 / 5 page UAC3092A LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 2 of 5 www.unisonic.com.tw QW-R121-005,B PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 Filter Buffer Remote Sense Lamp Collector Lamp Base Gnd Oscillato Adjust VREFΦ Oscillator Phase Rate Supply Regulation Vcc3 Vcc1 Gnd NC Gate Source Undervoltage VREF 11 12 13 14 15 16 17 18 19 20 PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 FB This pin provides Sense input or the Supply Regulation input. 2 Sense The Sense input is input for the true battery voltage. 3 Lamp Collector and Power-Up/Down This pin connects to drive the fault lamp. It is also used to sense a closed ignition switch (voltage sense). 4 Lamp Base This pin provides base current to the fault lamp drive transistor (Q2). 5 Ground This pin is for Ground return for the fault lamp control logic circuit. 6 Ground IC ground 7 Oscillator Adjust Connected to a resistor to ground that adjusts the internal oscillator frequency 8 VREFΦ This is a pin for the 1.1 V ~ 1.4 V reference voltage test. 9 Oscillator This is a pin for checking the operation of the internal oscillator. 10 Phase The Phase input detects the existence of a magnetic field rotating within the alternator. 11 Rate The Rate pin is Load Response Control recovery rate selector pin used to select a slow mode (floating) or fast mode (ground). 12 Supply Regulation The Supply Regulation pin is used as a representation of the alternator output voltage. This input also used to monitor overvoltage or load dump conditions. 13 Vcc3 Voltage supply for the internal Charge Pump. 14 Vcc1 Voltage supply for the entire IC except for the Charge Pump. 15 Ground Ground for the IC. 16 N/C No connection. 17 Gate The Gate Controls of the MOSFET used to energize the field winding. 18 Source MOSFET source reference for Field winding control. 19 Undervoltage If this pin have voltage goes below 1.0 V, the fault lamp is turn on. The IC will continue to function, but with limited performance. 20 VREF Pin for the Band gap reference voltage 1.7 V ~ 2.3 V. Note: Pin 8, and 20 are test points only |
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