TPS7B67-Q1 Automotive 450mA High-Voltage Ultra-Low-Iq Low-Dropout Regulator |

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Automotive 450mA High-Voltage Ultra-Low-Iq Low-Dropout Regulator


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  • TPS7B70-Q1  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 


The TPS7B6701-Q1, TPS7B6733-Q1, and TPS7B6750-Q1 devices (TPS7B67xx-Q1) are low-dropout linear regulators designed for up to 40-V VIN operations. With only 15-µA quiescent current at light load that greatly increases the endurance time of the automotive battery, the devices drive loads up to 450 mA.

The TPS7B67xx-Q1 family of devices features an integrated short-circuit and overcurrent protection. Reset delay and power-good signal are implemented on power-up to indicate that the output voltage is stable and is in regulation. An external capacitor programs the delay. The enable function activates and deactivates the device with an I/O port from the MCU.

The device family operates at a temperature range of –40°C to 125°C.


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • 4-V to 40-V Wide-VIN Input-Voltage Range With up to 45-V Transient
  • Maximum Output Current, 450 mA
  • Low Quiescent Current (IQ))
    • < 4 µA When EN = Low (Shutdown Mode)
    • 15 µA Typical at Light Loads
  • Low-ESR (0.001 to 20 Ω) Ceramic Output-Stability Capacitor (10 µF to 500 µF When VO ≥ 2.5 V, 22 µF to 500 µF when VO = 1.5 V to 2.5 V)
  • Maximum Dropout Voltage 450 mV at 400 mA
  • Adjustable 1.5-V to 18-V Output Voltages
  • Low-Input Voltage Tracking to UVLO
  • Integrated Power-On Reset
    • Programmable-Reset Pulse Delay
    • Open-Drain Reset Output
  • Integrated Fault Protection
    • Thermal Shutdown
    • Short-Circuit Protection
  • 20-Pin HTSSOP Package

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Thermal calculator

Estimate the LDO IC temperature at your design conditions:
Part number
Vin  V
Vout  V
Iout  A
Ambient temp  °C
Package option
Voltage option
PCB construction
Enhanced Thermal = single thermal spreading plane of 1 oz Cu
Minimum Thermal = single thermal spreading plane of 1/2 oz Cu
View the user guide for more details.

Junction temperature vs. PCB copper coverage area
These are estimated power dissipation and thermal results.
Care must be taken to ensure that device junction temperature
does not exeed the maximum ratings as indicated in the datasheet.

This calculator uses the PCB copper area to estimate the device junction temperature. See notes on usage and calculation method.


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Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Fixed output options (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) TI functional safety category Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS7B67-Q1 Order now Adjustable Output
Fixed Output    
0.45     40     4     18     1.5     3.3
HTSSOP | 20     Enable
Power Good    
1     -40 to 125     45     Functional safety-capable     0.71 | 1ku     Automotive     60     2     240     0.015     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)