Home Energiemanagement Linear- und Low-Dropout-Regler (LDO)

TPS745-Q1

AKTIV

Low-Dropout-Spannungsregler (LDO) für die Automobilindustrie, 500 mA, niedriger Ruhestrom, hoher

Produktdetails

Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.5 Vout (min) (V) 0.55 Fixed output options (V) 0.7, 1, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.5, 1.7, 1.8, 2.2, 2.5, 2.8, 2.9, 3, 3.3, 3.4, 5 Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55, 55.5 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.5 Vout (min) (V) 0.55 Fixed output options (V) 0.7, 1, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.5, 1.7, 1.8, 2.2, 2.5, 2.8, 2.9, 3, 3.3, 3.4, 5 Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55, 55.5 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm² (2 mm × 2 mm) VSON (DRB) 8 9 mm² (3 mm × 3 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Device junction temperature: –40°C to 150°C
  • Package:
    • 2-mm × 2-mm wettable flank WSON
    • 3-mm × 3-mm wettable flank VSON
  • Input voltage range: 1.5 V to 6.0 V
  • Output voltage range:
    • Fixed option: 0.65 V to 5.0 V
    • Adjustable option: 0.55 V to 5.5 V
  • High PSRR: 45 dB at 100 kHz
  • Output accuracy: ±0.85% (25°C), ±1.5% maximum
  • Power-good output options:
    • Open-drain and push-pull
  • Ultra-low dropout:
    • 160 mV (max) at 500 mA (3.3 VOUT)
  • Stable with a 1-µF or larger capacitor
  • Low IQ: 25 µA (typical), 1.5 µA (shutdown)
  • Active output discharge
  • Functional Safety-Capable
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Device junction temperature: –40°C to 150°C
  • Package:
    • 2-mm × 2-mm wettable flank WSON
    • 3-mm × 3-mm wettable flank VSON
  • Input voltage range: 1.5 V to 6.0 V
  • Output voltage range:
    • Fixed option: 0.65 V to 5.0 V
    • Adjustable option: 0.55 V to 5.5 V
  • High PSRR: 45 dB at 100 kHz
  • Output accuracy: ±0.85% (25°C), ±1.5% maximum
  • Power-good output options:
    • Open-drain and push-pull
  • Ultra-low dropout:
    • 160 mV (max) at 500 mA (3.3 VOUT)
  • Stable with a 1-µF or larger capacitor
  • Low IQ: 25 µA (typical), 1.5 µA (shutdown)
  • Active output discharge
  • Functional Safety-Capable
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W

The TPS745-Q1 is a 500-mA ultra-low-dropout regulator (LDO) with power-good functionality. This device is available in a small 6-pin, 2-mm × 2-mm WSON package and a small 8-pin, 3-mm × 3-mm VSON package with wettable flanks to facilitate optical inspection. The TPS745-Q1 consumes low quiescent current and provides fast line and load transient performance.

The TPS745-Q1 is a flexible device for post-regulation by supporting an input voltage range from 1.5 V to 6.0 V and an externally adjustable output range of 0.55 V to 5.5 V. The device also features fixed output voltages for powering common voltage rails.

The TPS745-Q1 has a power-good (PG) output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power supplies in the system.

The TPS745-Q1 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides high accuracy of ±0.85% (max) at 25°C and ±1.5% (max) over temperature. This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS745-Q1 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.

The TPS745-Q1 is a 500-mA ultra-low-dropout regulator (LDO) with power-good functionality. This device is available in a small 6-pin, 2-mm × 2-mm WSON package and a small 8-pin, 3-mm × 3-mm VSON package with wettable flanks to facilitate optical inspection. The TPS745-Q1 consumes low quiescent current and provides fast line and load transient performance.

The TPS745-Q1 is a flexible device for post-regulation by supporting an input voltage range from 1.5 V to 6.0 V and an externally adjustable output range of 0.55 V to 5.5 V. The device also features fixed output voltages for powering common voltage rails.

The TPS745-Q1 has a power-good (PG) output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power supplies in the system.

The TPS745-Q1 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides high accuracy of ±0.85% (max) at 25°C and ±1.5% (max) over temperature. This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS745-Q1 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.

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Design und Entwicklung

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Evaluierungsplatine

TPS746EVM-009 — TPS746 einstellbarer 1-A-LDO-Linearregler mit Power-Good – Evaluierungsmodul

Das Evaluierungsmodul (EVM) TPS746EVM-009 wurde für eine typische Konfiguration entwickelt, um den Betrieb und die Leistung des TPS746 zu evaluieren. Der TPS746 ist ein 1-A-Nieder-Vin-Spannungsregler mit niedrigem Dropout (Low Dropout, LDO) und Power Good.

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