TPS757

ACTIVE

3-A, ultra-low-dropout voltage regulator with power good & enable

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TPS7A53 ACTIVE 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator Cost-optimized product with lower current and lower noise performance in smaller enhanced QFN package

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 2.8 Vout (max) (V) 5 Vout (min) (V) 1.22 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (µVrms) 35 Iq (typ) (mA) 0.12 Thermal resistance θJA (°C/W) 39 Rating Catalog Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR at 100 KHz (dB) 12 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 5.5 Vin (min) (V) 2.8 Vout (max) (V) 5 Vout (min) (V) 1.22 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (µVrms) 35 Iq (typ) (mA) 0.12 Thermal resistance θJA (°C/W) 39 Rating Catalog Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR at 100 KHz (dB) 12 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • 3-A Low-Dropout Voltage Regulator
  • Available in 1.5-V, 1.8-V, 2.5-V, and 3.3-V Fixed-Output and Adjustable Versions
  • Open Drain Power-Good (PG) Status Output (Fixed Options Only)
  • Dropout Voltage Typically 150 mV at 3 A (TPS75733)
  • Low 125 µA Typical Quiescent Current
  • Fast Transient Response
  • 3% Tolerance Over Specified Conditions for Fixed-Output Versions
  • Available in 5-Pin TO-220 and TO-263 Surface-Mount Packages
  • Thermal Shutdown Protection

  • 3-A Low-Dropout Voltage Regulator
  • Available in 1.5-V, 1.8-V, 2.5-V, and 3.3-V Fixed-Output and Adjustable Versions
  • Open Drain Power-Good (PG) Status Output (Fixed Options Only)
  • Dropout Voltage Typically 150 mV at 3 A (TPS75733)
  • Low 125 µA Typical Quiescent Current
  • Fast Transient Response
  • 3% Tolerance Over Specified Conditions for Fixed-Output Versions
  • Available in 5-Pin TO-220 and TO-263 Surface-Mount Packages
  • Thermal Shutdown Protection

The TPS757xx family of 3-A low dropout (LDO) regulators contains four fixed voltage option regulators with integrated power-good (PG) and an adjustable voltage option regulator. These devices are capable of supplying 3 A of output current with a dropout of 150 mV (TPS75733). Therefore, the device is capable of performing a 3.3-V to 2.5-V conversion. Quiescent current is 125 µA at full load and drops down to less than 1 µA when the device is disabled. The TPS757xx is designed to have fast transient response for large load current changes.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is low (typically 150 mV at an output current of 3 A for the TPS75733) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is low and independent of output loading (typically 125 &miccro;A over the full range of output current). These two key specifications yield a significant improvement in operating life for battery-powered systems.

The device is enabled when EN is connected to a low-level voltage. This LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 µA at TJ = 25°C. The power-good terminal (PG) is an active low, open drain output, which can be used to implement a power-on reset or a low-battery indicator.

The TPS757xx is offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.22 V to 5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS757xx family is available in a 5-pin TO-220 (KC) and TO-263 (KTT) packages.

The TPS757xx family of 3-A low dropout (LDO) regulators contains four fixed voltage option regulators with integrated power-good (PG) and an adjustable voltage option regulator. These devices are capable of supplying 3 A of output current with a dropout of 150 mV (TPS75733). Therefore, the device is capable of performing a 3.3-V to 2.5-V conversion. Quiescent current is 125 µA at full load and drops down to less than 1 µA when the device is disabled. The TPS757xx is designed to have fast transient response for large load current changes.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is low (typically 150 mV at an output current of 3 A for the TPS75733) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is low and independent of output loading (typically 125 &miccro;A over the full range of output current). These two key specifications yield a significant improvement in operating life for battery-powered systems.

The device is enabled when EN is connected to a low-level voltage. This LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 µA at TJ = 25°C. The power-good terminal (PG) is an active low, open drain output, which can be used to implement a power-on reset or a low-battery indicator.

The TPS757xx is offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.22 V to 5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS757xx family is available in a 5-pin TO-220 (KC) and TO-263 (KTT) packages.

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Technical documentation

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* Data sheet Fast-Transient Response 3-A Low Dropout Voltage Regulators datasheet (Rev. E) 05 Feb 2009
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
EVM User's guide TPS75525EVM Voltage Regulator Evaluation Module 28 Nov 2001

Design & development

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Simulation model

TPS75701 PSpice Transient Model

SLVMAU5.ZIP (62 KB) - PSpice Model
Simulation model

TPS75701 Unencrypted PSpice Transient Model

SLVMAU4.ZIP (2 KB) - PSpice Model
Package Pins Download
TO-220 (KC) 5 View options
TO-263 (KTT) 5 View options

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