Automotive 50-mA, off-battery (40-V), low-IQ, low-dropout voltage regulator with power good



Product details


Output options Fixed Output Iout (Max) (A) 0.05 Vin (Max) (V) 40 Vin (Min) (V) 4 Vout (Max) (V) 5 Vout (Min) (V) 5 Fixed output options (V) 5 Iq (Typ) (mA) 0.012 Thermal resistance θJA (°C/W) 63 Load capacitance (Min) (µF) 2.2 Rating Automotive Regulated outputs (#) 1 Features Enable, Power Good Accuracy (%) 2 PSRR @ 100 KHz (dB) 50 Dropout voltage (Vdo) (Typ) (mV) 130 Operating temperature range (C) -40 to 150 open-in-new Find other Linear regulators (LDO)

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HVSSOP (DGN) 8 15 mm² 3 x 4.9 open-in-new Find other Linear regulators (LDO)


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature: –40°C to 150°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4
  • 4-V to 40-V Wide Vin Input Voltage Range With
    up to 45-V Transient
  • Output Current: 50 mA
  • Low Quiescent Current, I(q):
    • 2 µA when EN = Low (Shutdown Mode)
    • 12 µA Typical at Light Loads
  • Low ESR Ceramic Output Stability Capacitor
    (2.2 µF–100 µF)
  • 130-mV Dropout Voltage at 50 mA
    (Typical, V(Vin) = 4 V)
  • Fixed 5-V Output Voltage
  • Low Input Voltage Tracking
  • Integrated Power-On Reset
    • Programmable Reset-Pulse Delay
    • Open-Drain Reset Output
  • Integrated Fault Protection
    • Thermal Shutdown
    • Short-Circuit Protection
  • 8-Pin MSOP-DGN Package
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The TPS7A6650H-Q1 is a low-dropout linear regulator designed for up to 40-V Vin operations. With only 12-µA quiescent current at no load, it is quite suitable for standby microprocessor control-unit systems, especially in automotive applications.

The device features integrated short-circuit and overcurrent protection. The device implements reset delay on power up to indicate the output voltage is stable and in regulation. One can program the delay with an external capacitor. A low-voltage tracking feature allows for a smaller input capacitor and can possibly eliminate the need of using a boost converter during cold-crank conditions.

The device operates in the –40°C to 150°C temperature range, which makes it well suited for power supplies in various automotive applications.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet TPS7A6650H-Q1 40-V, Ultralow-I(q), 150°C-Ambient-Temperature Regulator datasheet Dec. 01, 2015
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

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