TPS7B81-Q1 Automotive 150-mA high-voltage ultra-low-IQ low-dropout (LDO) linear regulator | TI.com

TPS7B81-Q1 (ACTIVE) Automotive 150-mA high-voltage ultra-low-IQ low-dropout (LDO) linear regulator

 

Description

In automotive battery-connected applications, low quiescent current (IQ) is important to conserve energy and to extend battery lifetime. Always-on systems must have ultralow IQ over an extended temperature range to enable sustained operation when the vehicle ignition is off.

The TPS7B81-Q1 is a low-dropout (LDO) linear regulator designed for up to 40-V VIN applications. With only a 2.7-µA typical quiescent current at light load, the device is an optimal solution for powering microcontrollers and controller area network and local interconnect network (CAN/LIN) transceivers in standby systems.

The device features integrated short-circuit and overcurrent protection. This device operates in ambient temperatures from –40°C to +125°C and with junction temperatures from –40°C to +150°C. Additionally, this device is available in several packages of varying size and thermal conductivity. The small WSON package facilitates the most compact PCB design and the TO-252 package enables sustained operation despite significant dissipation across the device. These features make the device well suited as a power supply for various battery-connected automotive applications.

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, TA
  • Device junction temperature range:
    –40°C to 150°C
  • 3-V to 40-V wide VIN input voltage range with up to 45-V transient
  • Maximum output current: 150 mA
  • Low quiescent current IQ:
    • 300 nA typical when EN = low
      (shutdown mode)
    • 2.7 µA typical at light loads
    • 4.5 µA maximum at light loads
  • 1.5% output-voltage accuracy over line, load and temperature
  • Maximum dropout voltage: 540 mV at 150-mA load current for fixed 5-V output version
  • Stable with low-ESR (0.001-Ω to 5-Ω) ceramic output-stability capacitor (1 µF to 200 µF)
  • Fixed 5-V and 3.3-V output voltage
  • Integrated fault protection:
    • Thermal shutdown
    • Short-circuit and overcurrent protection
  • Packages:
    • DGN (8-pin HVSSOP), RθJA = 63.9°C/W
    • DRV (6-pin WSON), RθJA = 72.8°C/W
    • KVU (5-pin TO-252), RθJA = 38.8°C/W (preview)

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Parametrics

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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) Noise (uVrms) Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS7B81-Q1 Order now Fixed Output     0.15     40     3     5     3.3     3.3
5    
MSOP-PowerPAD | 8
WSON | 6    
Enable     1     -40 to 150     59     450     0.55 | 1ku     Automotive     25     2     400     0.003     8MSOP-PowerPAD: 15 mm2: 4.9 x 3 (MSOP-PowerPAD | 8)
6WSON: 4 mm2: 2 x 2 (WSON | 6)    
TPS7A66-Q1 Order now Adjustable Output
Fixed Output    
0.15     40     4     5.5     1.5     3.3
5    
MSOP-PowerPAD | 8     Enable
Power Good    
1     -40 to 125     63       0.60 | 1ku     Automotive     40     2     300     0.012     8MSOP-PowerPAD: 15 mm2: 4.9 x 3 (MSOP-PowerPAD | 8)    
TPS7A6650H-Q1 Order now Fixed Output     0.05     40     4     5     5     5     MSOP-PowerPAD | 8     Enable
Power Good
Soft Start    
1     -40 to 150     63       1.40 | 1ku     Automotive     50     2     130     0.012     8MSOP-PowerPAD: 15 mm2: 4.9 x 3 (MSOP-PowerPAD | 8)    
TPS7A69-Q1 Order now Fixed Output     0.15     40     4     5     3.3     3.3
5    
SOIC | 8     Power Good
Power-Fail Detect    
1     -40 to 125     113       0.65 | 1ku     Automotive     40     2     300     0.012     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
TPS7B69-Q1 Order now Fixed Output     0.15     40     4     5     2.5