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TPS7A21-Q1

ACTIVE

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

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Data sheet

TPS7A21-Q1

ACTIVE
Data sheet Order now

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, 1.05, 1.2, 1.5, 1.8, 2.8, 3.3, 5 Rating Automotive Noise (µVrms) 7.7 PSRR at 100 KHz (dB) 61 Iq (typ) (mA) 0.0065 Thermal resistance θJA (°C/W) 58.9, 80 Regulated outputs (#) 1 Features Enable, Wettable flanks package Accuracy (%) 1.5 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, 1.05, 1.2, 1.5, 1.8, 2.8, 3.3, 5 Rating Automotive Noise (µVrms) 7.7 PSRR at 100 KHz (dB) 61 Iq (typ) (mA) 0.0065 Thermal resistance θJA (°C/W) 58.9, 80 Regulated outputs (#) 1 Features Enable, Wettable flanks package Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 175 Operating temperature range (°C) -40 to 125
VSON (DRB) 8 9 mm² 3 x 3 WSON (DSG) 8 4 mm² 2 x 2
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C
    • Junction temperature: –40°C to +150°C
  • Very low IQ: 6.5µA
  • Input voltage range: 2.0V to 6.0V
  • Output voltage range: 0.8V to 5.5V (50mV steps)
  • High PSRR: 91dB at 1kHz
  • Low output voltage noise: 7.7µVRMS
  • Low dropout:
    • 265mV (maximum) at 500mA (2.5V VOUT)
  • Smart EN pulldown
  • Output voltage tolerance: ±1% over temperature
  • Supports a wide range of ceramic capacitors:
    • 1µF to 200µF
  • Package:
    • 3mm × 3mm wettable flank VSON
    • 2mm × 2mm wettable flank WSON
    • 2mm × 2mm WSON (Advance Information)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C
    • Junction temperature: –40°C to +150°C
  • Very low IQ: 6.5µA
  • Input voltage range: 2.0V to 6.0V
  • Output voltage range: 0.8V to 5.5V (50mV steps)
  • High PSRR: 91dB at 1kHz
  • Low output voltage noise: 7.7µVRMS
  • Low dropout:
    • 265mV (maximum) at 500mA (2.5V VOUT)
  • Smart EN pulldown
  • Output voltage tolerance: ±1% over temperature
  • Supports a wide range of ceramic capacitors:
    • 1µF to 200µF
  • Package:
    • 3mm × 3mm wettable flank VSON
    • 2mm × 2mm wettable flank WSON
    • 2mm × 2mm WSON (Advance Information)

The TPS7A21-Q1 is a small, low-dropout (LDO) linear voltage regulator that sources 500mA 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 2.0V to 6.0V input voltage range and 0.8V to 5.5V output voltage range support a variety of system requirements.

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. This circuit also 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 sources 500mA 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 2.0V to 6.0V input voltage range and 0.8V to 5.5V output voltage range support a variety of system requirements.

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. This circuit also helps eliminate external components that are otherwise required to pull down the EN input.
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* Data sheet TPS7A21-Q1 Automotive, 500mA, Low-Noise, Low-IQ , High-PSRR LDO datasheet (Rev. C) PDF | HTML 27 Jun 2024

Design & development

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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 (...)

User guide: PDF
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TPS7A21-Q1 PSPICE Model

SBVMA06.ZIP (71 KB) - PSpice Model
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Reference designs

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Design guide: PDF
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WSON (DSG) 8 Ultra Librarian
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