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TPS22981RGPT Datasheet(PDF) 3 Page - Texas Instruments |
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TPS22981RGPT Datasheet(HTML) 3 Page - Texas Instruments |
3 / 27 page V3P3 V3P3 V3P3OUT S0 ENHVU 15 14 13 12 11 15 14 13 12 11 ENHVU S0 V3P3OUT V3P3 V3P3 TPS22981 www.ti.com SLVSBM6B – DECEMBER 2012 – REVISED NOVEMBER 2015 5 Pin Configuration and Functions RGP Package RGP Package VQFN With Exposed Thermal Pad VQFN With Exposed Thermal Pad Top View Bottom View Pin Functions PIN TYPE DESCRIPTION NAME NO. EN 5 I Device active-high enable. Enable VHV UVLO control of device enable. When asserted high, both V3P3 and VHV must be ENHVU 16 I present for device enable. When low, only V3P3 must be present for device enable. Fault condition output. This pin is an open-drain pulldown indicating a fault condition. Place a pullup FAULTZ 4 O resistance (RFAULTZ) between this pin and V3P3. Float pin or tie pin to GND if unused. 1, 2, 3, GND P Device ground. All GND pins must be connected to board ground. 13, 15 GND EP P Exposed pad must be connected to device GND. HV_EN 11 I Active-high voltage output enable. Sets the current limit for VHV in S0 mode. Place resistor between this pin and GND. See Equation 1 to ISET_S0 10 I calculate resistor value. Sets the current limit for VHV in S3 mode. Place resistor between this pin and GND. See Equation 1 to ISET_S3 9 I calculate resistor value. ISET_V3P Sets the current limit for V3P3. Place resistor between this pin and GND. See Equation 1 to calculate 8 I 3 resistor value. OUT 12, 14 O Power output. Place a minimum of 1-µF capacitor to GND as close to this pin as possible. S0 17 I When this pin is asserted, the device is put in S0 mode. Otherwise the device operates in S3 mode. 3.3-V power supply input. Place a minimum of 0.1-µF capacitor to GND as close to this pin as V3P3 19, 20 P possible. 3.3-V bypass output. When ENHVU is low, this path is enabled by EN and the V3P3 UVLO. When V3P3OUT 18 O ENHVU is high, this path is enabled by EN and both the V3P3 UVLO and the VHV UVLO. Place a minimum 0.1-uF capacitor to GND as close to this pin as possible. VHV 6, 7 P High voltage power supply input. See the Input Inductive Bounce section for more information. Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TPS22981 |
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