TPS790

ACTIVE

50-mA, 10-V, low-IQ, low-dropout voltage regulator with low-noise

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TLV767 ACTIVE Adjustable- and fixed-output, 1-A, 16-V, positive-voltage low-dropout (LDO) linear regulator Alternative product with higher PSRR and better thermals in a 2x2 WSON and 3x3 MSOP-8 package
TPS7A24 ACTIVE 200-mA, 18-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with enable Alternative product offering ultra-low IQ and improved accuracy in a SOT-23-5 package

Product details

Output options Fixed Output Iout (max) (A) 0.05 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 3 Vout (min) (V) 1.5 Fixed output options (V) 1.5, 1.8, 2.5, 2.8, 3 Noise (µVrms) 56 Iq (typ) (mA) 0.017 Thermal resistance θJA (°C/W) 180 Rating Catalog Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 3 PSRR at 100 KHz (dB) 35 Dropout voltage (Vdo) (typ) (mV) 57 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.05 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 3 Vout (min) (V) 1.5 Fixed output options (V) 1.5, 1.8, 2.5, 2.8, 3 Noise (µVrms) 56 Iq (typ) (mA) 0.017 Thermal resistance θJA (°C/W) 180 Rating Catalog Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Soft start Accuracy (%) 3 PSRR at 100 KHz (dB) 35 Dropout voltage (Vdo) (typ) (mV) 57 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • 50-mA Low-Dropout Regulator
  • Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V, 3.0-V
  • Output Noise Typically 56 uVRMS (TPS79030)
  • Only 17 uA Quiescent Current at 50 mA
  • 1 uA Quiescent Current in Standby Mode
  • Dropout Voltage Typically 57 mV at 50 mA (TPS79030)
  • Over Current Limitation
  • \x9640°C to 125°C Operating Junction Temperature Range
  • 5-Pin SOT-23 (DBV) Package
  • 50-mA Low-Dropout Regulator
  • Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V, 3.0-V
  • Output Noise Typically 56 uVRMS (TPS79030)
  • Only 17 uA Quiescent Current at 50 mA
  • 1 uA Quiescent Current in Standby Mode
  • Dropout Voltage Typically 57 mV at 50 mA (TPS79030)
  • Over Current Limitation
  • \x9640°C to 125°C Operating Junction Temperature Range
  • 5-Pin SOT-23 (DBV) Package

The TPS790xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, ultralow-power operation, low-output noise, and miniaturized packaging. These regulators feature low-dropout voltages and ultralow quiescent current compared to conventional LDO regulators. An internal resistor, in conjunction with an external bypass capacitor, creates a low-pass filter to reduce the noise. The TPS79030 exhibits only 56 uVRMS of output voltage noise using 0.01 uF bypass and 10 uF output capacitors. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS790xx series devices are ideal for micropower operations, low output noise, and where board space is limited.

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 very low, typically 57 mV at 50 mA of load current (TPS79030), and is directly proportional to the load current. The quiescent current is ultralow (17 uA typically) and is stable over the entire range of output load current (0 mA to 50 mA). Intended for use in portable systems such as laptops and cellular phones, the ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in system battery operating life.

The TPS790xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA typical at TJ = 25°C. The TPS790xx is offered in 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V.

The TPS790xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, ultralow-power operation, low-output noise, and miniaturized packaging. These regulators feature low-dropout voltages and ultralow quiescent current compared to conventional LDO regulators. An internal resistor, in conjunction with an external bypass capacitor, creates a low-pass filter to reduce the noise. The TPS79030 exhibits only 56 uVRMS of output voltage noise using 0.01 uF bypass and 10 uF output capacitors. Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS790xx series devices are ideal for micropower operations, low output noise, and where board space is limited.

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 very low, typically 57 mV at 50 mA of load current (TPS79030), and is directly proportional to the load current. The quiescent current is ultralow (17 uA typically) and is stable over the entire range of output load current (0 mA to 50 mA). Intended for use in portable systems such as laptops and cellular phones, the ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in system battery operating life.

The TPS790xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA typical at TJ = 25°C. The TPS790xx is offered in 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V.

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Technical documentation

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* Data sheet Ultralow-Power, Low-Noise 50-mA Low Dropout Linear Regulators datasheet (Rev. B) 04 May 2001
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
User guide DEM-SOT23LDO Demonstration Fixture User's Guide (Rev. A) 02 Jun 2005

Design & development

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Evaluation board

DEM-SOT23LDO — DEM-SOT23LDO Compatible With Most Positive-Output LDO Regulators in 5- or 6-Lead SOT23 (DBV) Package

User guide: PDF
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SOT-23 (DBV) 5 Ultra Librarian

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