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TPS7A21-Q1

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Automotive, 500-mA, low-noise ultra-low-IQ high-PSRR low-dropout (LDO) voltage regulator

Product details

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 6 Vin (min) (V) 2 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Fixed output options (V) 1, 1.8, 2.8, 3.3, 5 Noise (µVrms) 7.7 Iq (typ) (mA) 0.0065 Thermal resistance θJA (°C/W) 58.9 Rating Automotive Regulated outputs (#) 1 Features Enable, Wettable flanks package Accuracy (%) 1.5 PSRR at 100 KHz (dB) 61 Dropout voltage (Vdo) (typ) (mV) 175 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 6 Vin (min) (V) 2 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Fixed output options (V) 1, 1.8, 2.8, 3.3, 5 Noise (µVrms) 7.7 Iq (typ) (mA) 0.0065 Thermal resistance θJA (°C/W) 58.9 Rating Automotive Regulated outputs (#) 1 Features Enable, Wettable flanks package Accuracy (%) 1.5 PSRR at 100 KHz (dB) 61 Dropout voltage (Vdo) (typ) (mV) 175 Operating temperature range (°C) -40 to 125
VSON (DRB) 8 9 mm² 3 x 3
  • Very low I Q: 6.5 µA
  • Input voltage range: 2.0 V to 6.0 V
  • Output voltage range: 0.8 V to 5.5 V (50-mV steps)
  • High PSRR: 91 dB at 1 kHz
  • Low output voltage noise: 7.7 µV RMS
  • Low dropout:
    • 265 mV (maximum) at 500 mA (2.5-V V OUT)
  • Smart EN pulldown
  • Output voltage tolerance: ±1% at 1 mA I OUT
  • Supports a wide range of ceramic capacitors:
    • 1 µF to 200 µF
  • Operating junction temperature: –40°C to +150°C
  • Package:
    • 3-mm × 3-mm wettable flank VSON
  • Very low I Q: 6.5 µA
  • Input voltage range: 2.0 V to 6.0 V
  • Output voltage range: 0.8 V to 5.5 V (50-mV steps)
  • High PSRR: 91 dB at 1 kHz
  • Low output voltage noise: 7.7 µV RMS
  • Low dropout:
    • 265 mV (maximum) at 500 mA (2.5-V V OUT)
  • Smart EN pulldown
  • Output voltage tolerance: ±1% at 1 mA I OUT
  • Supports a wide range of ceramic capacitors:
    • 1 µF to 200 µF
  • Operating junction temperature: –40°C to +150°C
  • Package:
    • 3-mm × 3-mm wettable flank VSON

The TPS7A21-Q1 is a small, low-dropout (LDO) linear voltage regulator that can source 500 mA of output current. The device provides low noise, high PSRR, and excellent load and line transient performance to meet the requirements of RF and other sensitive analog circuits in automotive applications. Innovative design techniques result in low-noise performance without the addition of an external noise bypass capacitor. The TPS7A21-Q1 low quiescent current is a good choice for low-power systems. The 2.0-V to 6.0-V input voltage range and 0.8-V to 5.5-V output voltage range support a variety of system requirements. The maximum output voltage tolerance is 1.5%, –2.25% over load, line, and temperature variations.

An internal soft-start circuit helps control inrush current, thus minimizing the input voltage drop during start-up. The LDO is stable with small ceramic capacitors, allowing for a small overall solution size.

A smart enable input circuit with an internally controlled pulldown resistor keeps the LDO disabled even when the EN pin is unconnected and helps eliminate external components that are otherwise required to pull down the EN input.

The TPS7A21-Q1 is a small, low-dropout (LDO) linear voltage regulator that can source 500 mA of output current. The device provides low noise, high PSRR, and excellent load and line transient performance to meet the requirements of RF and other sensitive analog circuits in automotive applications. Innovative design techniques result in low-noise performance without the addition of an external noise bypass capacitor. The TPS7A21-Q1 low quiescent current is a good choice for low-power systems. The 2.0-V to 6.0-V input voltage range and 0.8-V to 5.5-V output voltage range support a variety of system requirements. The maximum output voltage tolerance is 1.5%, –2.25% over load, line, and temperature variations.

An internal soft-start circuit helps control inrush current, thus minimizing the input voltage drop during start-up. The LDO is stable with small ceramic capacitors, allowing for a small overall solution size.

A smart enable input circuit with an internally controlled pulldown resistor keeps the LDO disabled even when the EN pin is unconnected and helps eliminate external components that are otherwise required to pull down the EN input.

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* Data sheet TPS7A21-Q1 Automotive, 500-mA, Low-Noise, Low-IQ, High-PSRR LDO datasheet (Rev. A) PDF | HTML 04 Aug 2023

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Evaluation board

MULTIPKGLDOEVM-823 — Universal LDO linear voltage regulator evaluation module for DBV, DRB, DRV and DQN packages

The MULTIPKGLDOEVM-823 evaluation module (EVM) helps you evaluate the operation and performance of several common packages of linear regulators for possible use in circuit applications. This particular EVM configuration has a DRB, DRV, DQN and DBV footprint for you to solder and (...)

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VSON (DRB) 8 View options

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