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TPS386020 Datasheet(PDF) 8 Page - Texas Instruments |
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TPS386020 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 28 page TPS386000 TPS386040 (ThermalPad) CT4 CT3 CT1 NC VREF 1 2 3 4 5 15 14 13 12 11 CT2 GND MR VCC RESET1 TPS386020 TPS386060 CT4 CT3 CT1 NC VREF 1 2 3 4 5 15 14 13 12 11 CT2 GND MR VCC RESET1 (ThermalPad) TPS386000, TPS386020 TPS386040, TPS386060 SBVS105 –SEPTEMBER 2009......................................................................................................................................................................................... www.ti.com PIN CONFIGURATIONS RGP PACKAGE QFN-20 (TOP VIEW) PIN ASSIGNMENTS PIN NAME NO. DESCRIPTION VCC 14 Supply voltage. Connecting a 0.1μF ceramic capacitor close to this pin is recommended. GND 12 Ground When the voltage at this terminal drops below the SENSE1 10 Monitor voltage input to SVS-1 threshold voltage (VITN), RESET1 is asserted. When the voltage at this terminal drops below the SENSE2 9 Monitor voltage input to SVS-2 threshold voltage (VITN), RESET2 is asserted. When the voltage at this terminal drops below the SENSE3 8 Monitor voltage input to SVS-3 threshold voltage (VITN), RESET3 is asserted. Falling monitor voltage input to SVS-4. When the voltage at this terminal drops below the threshold SENSE4L 7 voltage (VITN), RESET4 or RESET4 is asserted. Rising monitor voltage input to SVS-4. When the voltage at this terminal exceeds the threshold voltage SENSE4H 6 (VITP), RESET4 or RESET4 is asserted. This pin can also be used to monitor the negative voltage rail in combination with VREF pin. CT1 5 Reset delay programming pin for SVS-1 Connecting this pin to VCC through a 40kΩ to 200kΩ resistor, or leaving it open, selects a fixed CT2 4 Reset delay programming pin for SVS-2 delay time (see the Electrical Characteristics). CT3 3 Reset delay programming pin for SVS-3 Connecting a capacitor > 220pF between this pin and GND selects the programmable delay time CT4 2 Reset delay programming pin for SVS-4 (see the Reset Delay Time section). Reference voltage output. By connecting a resistor network between this pin and the negative power rail, SENSE4H can monitor the negative power rail. This pin is intended to only source current into VREF 13 resistor(s). Do not connect only capacitors and do not connect resistor(s) to a higher voltage than this pin. MR 1 Manual reset input for SVS-1. Logic low level of this pin asserts RESET1 or RESET1. Watchdog timer (WDT) trigger input. Inputting either a positive or negative logic edge every 610ms (typ) WDI 20 prevents WDT time out at the WDO or WDO pin. Timer starts from releasing event of RESET1 or RESET1. NC 11 Not connected. It is recommended to connect this pin to the GND pin (pin 12), which is next to this pin. This is the IC substrate. This pad must be connected only to GND or to the floating thermal pattern on (Thermal Pad) (PAD) the printed circuit board (PCB). 8 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TPS386000 TPS386020 TPS386040 TPS386060 |
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