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Product details

Parameters

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 (uVrms) 56 Iq (Typ) (mA) 0.017 Thermal resistance θJA (°C/W) 180 Approx. price (US$) 0.48 | 1ku Load capacitance (Min) (µF) 4.7 Rating Catalog Regulated outputs (#) 1 Features Enable, Soft Start Accuracy (%) 3 PSRR @ 100 KHz (dB) 35 Dropout voltage (Vdo) (Typ) (mV) 57 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 1.60 x 2.90 open-in-new Find other Linear regulators (LDO)

Features

  • 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
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Description

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The usual PNP pass transistor has been replaced by a PMOS pass element.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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Type Title Date
* Datasheet Ultralow-Power, Low-Noise 50-mA Low Dropout Linear Regulators datasheet (Rev. B) May 04, 2001
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Application notes LDO Noise Demystified (Rev. A) Aug. 09, 2017
Application notes LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
User guides DEM-SOT23LDO Demonstration Fixture User's Guide (Rev. A) Jun. 02, 2005

Design & development

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Hardware development

EVALUATION BOARDS Download
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CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

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