TPS797-Q1

ACTIVE

Automotive 10-mA, ultra-low-IQ, low-dropout voltage regulator with power good

Product details

Output options Fixed Output Iout (max) (A) 0.01 Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 3.3 Vout (min) (V) 1.8 Fixed output options (V) 1.8, 3, 3.3 Noise (µVrms) 600 Iq (typ) (mA) 0.001 Thermal resistance θJA (°C/W) 314 Rating Automotive Load capacitance (min) (µF) 0.47 Regulated outputs (#) 1 Features Power good Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.01 Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 3.3 Vout (min) (V) 1.8 Fixed output options (V) 1.8, 3, 3.3 Noise (µVrms) 600 Iq (typ) (mA) 0.001 Thermal resistance θJA (°C/W) 314 Rating Automotive Load capacitance (min) (µF) 0.47 Regulated outputs (#) 1 Features Power good Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • Qualified for Automotive Applications
  • 10-mA Low-Dropout Regulator
  • Ultralow 1.2-µA Quiescent Current at 10 mA
  • 5-Pin SC70/SOT-323 (DCK) Package
  • Integrated Power Good Output
  • Stable With Any Capacitor (>0.47 µF)
  • Dropout Voltage Typically 105 mV at 10 mA (TPS79733)
  • Over Current Limitation
  • –40°C to 125°C Operating Junction Temperature Range
  • APPLICATIONS
    • Battery Powered Microcontrollers and Microprocessors

  • Qualified for Automotive Applications
  • 10-mA Low-Dropout Regulator
  • Ultralow 1.2-µA Quiescent Current at 10 mA
  • 5-Pin SC70/SOT-323 (DCK) Package
  • Integrated Power Good Output
  • Stable With Any Capacitor (>0.47 µF)
  • Dropout Voltage Typically 105 mV at 10 mA (TPS79733)
  • Over Current Limitation
  • –40°C to 125°C Operating Junction Temperature Range
  • APPLICATIONS
    • Battery Powered Microcontrollers and Microprocessors

The TPS797xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage and ultralow-power operation. The device is stable with any capacitor (>0.47 µF). Therefore, implementations of this device require little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller based, battery-powered applications, the TPS797xx family’s low dropout and ultralow-powered operation results in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.

The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is low, typically 105 mV at 10 mA of load current and is directly proportional to the load current. The quiescent current is ultralow (1.2 µA typically) and is stable over the entire range of output load current (0 mA to 10 mA). When properly configured with a pullup resistor, the PG output can be used to implement a power-on reset or low battery indicator. The TPS797xx is offered in 1.8-V, 3-V, and 3.3-V fixed options.

The TPS797xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage and ultralow-power operation. The device is stable with any capacitor (>0.47 µF). Therefore, implementations of this device require little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller based, battery-powered applications, the TPS797xx family’s low dropout and ultralow-powered operation results in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.

The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is low, typically 105 mV at 10 mA of load current and is directly proportional to the load current. The quiescent current is ultralow (1.2 µA typically) and is stable over the entire range of output load current (0 mA to 10 mA). When properly configured with a pullup resistor, the PG output can be used to implement a power-on reset or low battery indicator. The TPS797xx is offered in 1.8-V, 3-V, and 3.3-V fixed options.

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Type Title Date
* Data sheet TPS7971xx-Q1: Ultralow-Power SC70/SOT-323 Pkgd 10 mA LDO Linear Regulators datasheet (Rev. A) 23 Jun 2008
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017

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SOT-SC70 (DCK) 5 View options

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