전력 관리 선형 및 저손실(LDO) 레귤레이터

TPS7A14-Q1

활성

Automotive, 1A, low-input-voltage and low-output-voltage, ultra-low dropout regulator

제품 상세 정보

Rating Automotive Vin (max) (V) 2.2 Vin (min) (V) 0.7 Iout (max) (A) 1 Output options Fixed Output Vout (max) (V) 2 Vout (min) (V) 0.5 Fixed output options (V) 0.5, 0.6, 0.75, 0.8, 0.9, 1, 1.05, 1.1, 1.2, 1.8 Noise (µVrms) 7.2 PSRR at 100 KHz (dB) 43 Iq (typ) (mA) 0.0056 Features Enable, Output discharge Thermal resistance θJA (°C/W) 72.7 TI functional safety category Functional Safety-Compliant Load capacitance (min) (µF) 1.5 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 140 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 2.2 Vin (min) (V) 0.7 Iout (max) (A) 1 Output options Fixed Output Vout (max) (V) 2 Vout (min) (V) 0.5 Fixed output options (V) 0.5, 0.6, 0.75, 0.8, 0.9, 1, 1.05, 1.1, 1.2, 1.8 Noise (µVrms) 7.2 PSRR at 100 KHz (dB) 43 Iq (typ) (mA) 0.0056 Features Enable, Output discharge Thermal resistance θJA (°C/W) 72.7 TI functional safety category Functional Safety-Compliant Load capacitance (min) (µF) 1.5 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 140 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm² (2 mm × 2 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: -40°C to +125°C
    • Junction temperature: -40°C to +150°C
  • Ultra-low input voltage range: 0.7V to 2.2V
  • High efficiency:
    • Dropout voltage at 1A: 140mV max
    • Specified for VIN = VOUT +150mV
  • Excellent load transient response:
    • 25mV for ILOAD = 3mA to 500mA in 20µs
  • Accuracy over load, line, and temperature: +1%, -1.25%
  • High PSRR:
    • 80dB at 1kHz (VOUT = 0.8V, IOUT = 500mA)
  • Available in fixed-output voltages:
    • 0.5V to 2.0V (in 25mV steps)
  • VBIAS range: 2.2V to 5.5V
  • 6-pin WSON (2mm × 2mm) package with wettable flanks
  • Active output discharge
  • Functional Safety-Capable
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: -40°C to +125°C
    • Junction temperature: -40°C to +150°C
  • Ultra-low input voltage range: 0.7V to 2.2V
  • High efficiency:
    • Dropout voltage at 1A: 140mV max
    • Specified for VIN = VOUT +150mV
  • Excellent load transient response:
    • 25mV for ILOAD = 3mA to 500mA in 20µs
  • Accuracy over load, line, and temperature: +1%, -1.25%
  • High PSRR:
    • 80dB at 1kHz (VOUT = 0.8V, IOUT = 500mA)
  • Available in fixed-output voltages:
    • 0.5V to 2.0V (in 25mV steps)
  • VBIAS range: 2.2V to 5.5V
  • 6-pin WSON (2mm × 2mm) package with wettable flanks
  • Active output discharge
  • Functional Safety-Capable

The TPS7A14-Q1 is a small, ultra low-dropout regulator (LDO) with excellent transient response. This device can source 1A with outstanding ac performance (load and line transient responses). The input voltage range is 0.7V to 2.2V, and the output range is 0.5V to 2.0V with a very high accuracy of 1% over load, line, and temperature.

The primary power path is through the IN pin and can be connected to a power supply as low as 50mV above the output voltage. All electrical characteristics (including excellent output voltage tolerance, transient response, and PSRR) are specified for input voltages 100mV greater than the output voltage, thereby yielding high practical efficiency. This regulator supports very low input voltages with the use of a higher, externally supplied VBIAS rail that is used to power the internal circuitry of the LDO. For example, the supply voltage to the IN pin can be the output of a high-efficiency, DC/DC step-down regulator and the BIAS pin supply voltage can be a rechargeable battery.

The TPS7A14-Q1 is equipped with an active pulldown circuit to quickly discharge the output when disabled, and provides a known start-up state.

The TPS7A14-Q1 is available in a 2mm × 2mm, 6-pin WSON package.

The TPS7A14-Q1 is a small, ultra low-dropout regulator (LDO) with excellent transient response. This device can source 1A with outstanding ac performance (load and line transient responses). The input voltage range is 0.7V to 2.2V, and the output range is 0.5V to 2.0V with a very high accuracy of 1% over load, line, and temperature.

The primary power path is through the IN pin and can be connected to a power supply as low as 50mV above the output voltage. All electrical characteristics (including excellent output voltage tolerance, transient response, and PSRR) are specified for input voltages 100mV greater than the output voltage, thereby yielding high practical efficiency. This regulator supports very low input voltages with the use of a higher, externally supplied VBIAS rail that is used to power the internal circuitry of the LDO. For example, the supply voltage to the IN pin can be the output of a high-efficiency, DC/DC step-down regulator and the BIAS pin supply voltage can be a rechargeable battery.

The TPS7A14-Q1 is equipped with an active pulldown circuit to quickly discharge the output when disabled, and provides a known start-up state.

The TPS7A14-Q1 is available in a 2mm × 2mm, 6-pin WSON package.

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설계 및 개발

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평가 보드

TPS7A14EVM-095 — 초저잡음 포지티브 전압 레귤레이터용 TPS7A14 평가 모듈

텍사스 인스트루먼트의 TPS7A14 평가 모듈(EVM)은 선형 레귤레이터 TPS7A14 제품군의 작동과 성능을 평가합니다. 이 EVM 구성에는 광범위한 애플리케이션에서 사용 가능한 저잡음, 소형, 저손실(LDO) 레귤레이터가 포함되어 있습니다. 이 레귤레이터는 낮은 VIN~VOUT 드롭아웃 전압 부하에 최대 1A까지 공급할 수 있습니다. 안정성을 위해서는 최소 디레이팅 커패시턴스 1.5uF(이상) 출력 커패시터를 사용하십시오. LDO의 측정 기능을 향상시키기 위해 추가 고성능 부하 과도 회로가 포함되어 있습니다.
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