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TPS7A21-Q1

ACTIVE

Automotive, 500mA, 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, 1.05, 1.2, 1.5, 1.8, 2.8, 3.3, 5 Noise (µVrms) 7.7 Iq (typ) (mA) 0.0065 Thermal resistance θJA (°C/W) 58.9, 80 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, 1.05, 1.2, 1.5, 1.8, 2.8, 3.3, 5 Noise (µVrms) 7.7 Iq (typ) (mA) 0.0065 Thermal resistance θJA (°C/W) 58.9, 80 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 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% at 1mA IOUT
  • Supports a wide range of ceramic capacitors:
    • 1µF to 200µF
  • Package:
    • 3mm × 3mm wettable flank VSON
    • 2mm × 2mm wettable flank WSON (Advance Information)
    • 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% at 1mA IOUT
  • Supports a wide range of ceramic capacitors:
    • 1µF to 200µF
  • Package:
    • 3mm × 3mm wettable flank VSON
    • 2mm × 2mm wettable flank WSON (Advance Information)
    • 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. 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. 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. 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. 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. B) PDF | HTML 14 Feb 2024

Design & development

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VSON (DRB) 8 Ultra Librarian
WSON (DSG) 8 Ultra Librarian

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