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THV3543 Datasheet(PDF) 4 Page - THine Electronics, Inc. |
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THV3543 Datasheet(HTML) 4 Page - THine Electronics, Inc. |
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4 / 19 page  THine Electronics, Inc. 4/19 THV3543_Rev.1.00_E Copyright© 2011 THine Electronics, Inc. Pin Descriptions Pin # Symbol Function Description 1 PC2 Output for CH-2 error amplifier Output pin for CH-2 error amplifier. Connect a capacitor between PC2 and GND for phase compensation. 2 FB1 Output for CH-1 error amplifier Output pin for CH-1 error amplifier. Connect a resistor and a capacitor between FB1 pin and INV1 pin for phase compensation. 3 VREG5 Output for 5V regulator Output pin for 5V regulator of the control circuit. Connect an external capacitor (10µF). 4 VO2_IN Input for CH-2 feedback voltage Feedback voltage input pin for CH-2. CH-2 is controlled so that VO2_IN pin becomes 3.3V. 5 INV1 Inverting input for CH-1 error amplifier Inverting input for CH-1 error amplifier. In fixed output voltage mode, connect a resistor and a capacitor for phase compensation. In adjustable output voltage mode, connect resistors between the output and INV1 pin, and between INV1 pin and GND, so that this pin become 1.2V. 6 VGH_OK VGH power good output After positive charge pump started properly, this pin switches from Low level to High level. Connect an external pull-up resistor. 7 PG_LOGIC Input for load switch control Input pin for controlling LSW_OUT2. 8 VO2_OK Output for CH-2 power good After CH-2 started properly, this pin switches from Low level to High level. Connect an external pull-up resistor. 9 VREF Reference voltage 1.2V reference voltage for feedback of negative voltage charge pump. Connect an external capacitor (0.01µF) for the stability. 10 TEST Test pin Used for the production test before shipment. Connect to GND. 11 SYSUVLO Input for System UVLO SYSUVLO pin shuts down the operation of IC, when the power supply voltage drops below regulated value. Resistors are internally connected between VCC pin and SYSUVLO pin, and between SYSUVLO pin and GND. It is possible to set the detection voltage at any value by connecting external resister divider to SYSUVLO pin. 12 PANEL_EN Input for Panel power supply enable When Low level voltage is applied to PANEL_EN pin, negative voltage charge pump, Load Switch 1 and positive voltage charge pump stop their operations. If not in use, connect to VREG5 pin. 13 14 NC NC No connection. Leave open. 15 INV_LDO LDO amplifier inverting input LDO inverting input. The voltage on this pin is 1.2V in the normal operation. 16 SGND Ground for signal Ground pin for the control circuit block. 17 V_LDO Power supply for LDO Power supply pin for LDO amplifier. |
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