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TPS2140 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS2140 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 25 page TPS2140, TPS2141 TPS2150, TPS2151 SLVS399 – JANUARY 2002 3 www.ti.com functional block diagram CS 2-Level Current Limit Driver SW_OUT VREF VREF VCC Select Charge Pump Thermal Sense 0.9 V to 3.3 V 250 mA LDO SW_IN LDO_IN SW_EN† LDO_EN GND SW_OUT SW_PG SW_PLDN LDO_PG ADJ LDO_OUT LDO_PLDN † The pin is active low for TPS2140 and TPS2141, with an internal pullup. The pin is active high for TPS2150 and TPS2151, with an internal pulldown. Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION ADJ 9 I Feedback adjustment of LDO regulator to set output voltage GND 7 Ground LDO_EN 6 I Enable signal for LDO regulator, active high, no internal pullup or pulldown LDO_IN 4 I Input of LDO regulator LDO_OUT 11 O Output of LDO regulator LDO_PG 8 O Power good signal for LDO output, open-drain, active high LDO_PLDN 10 I Output pulldown pin used for LDO when connected to LDO_OUT SW_EN or SW_EN 5 I Active-high enable for switch on TPS2150 and TPS2151 devices with internal pulldown Active-low enable for switch on TPS2140 and TPS2141 devices with internal pullup SW_IN 2, 3 I Input of the switch SW_OUT 12, 13 O Output of switch SW_PG 1 O Power good signal for switch output, active high logic-level signal, no external pullup required. SW_PLDN 14 I Output pulldown pin used for switch when connected to SW_OUT. |
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