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TPS7B4255

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70-mA 40-V voltage-tracking low-dropout (LDO) regulator with 5-mV tracking tolerance

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Data sheet

TPS7B4255

ACTIVE
Data sheet Order now

Product details

Output options Tracking Output Iout (max) (A) 0.07 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 30 Vout (min) (V) 2 Noise (µVrms) 150 Iq (typ) (mA) 0.031 Thermal resistance θJA (°C/W) 127 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection PSRR at 100 KHz (dB) 70 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -40 to 125
Output options Tracking Output Iout (max) (A) 0.07 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 30 Vout (min) (V) 2 Noise (µVrms) 150 Iq (typ) (mA) 0.031 Thermal resistance θJA (°C/W) 127 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection PSRR at 100 KHz (dB) 70 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Wide input operating voltage range (3 V to 40 V):
    • Absolute maximum input range: –40 V to +45 V
  • Wide output voltage range: 2 V to 30 V
  • Very-tight, output-tracking tolerance: 5 mV (max)
  • Low dropout voltage: 500 mV (max) at 70 mA
  • Reverse polarity protection
  • Reverse current protection
  • Combined reference and enable input
  • Low quiescent current at light loads (100-µA load):
    • 50 µA (max)
  • Wide ESR range:
    • Stable with 1-µF to 200-µF ceramic output capacitor, 1-mΩ to 3-Ω ESR
  • Overtemperature protection
  • Output short-circuit protection to ground and supply
  • Junction temperature: –40°C to +150°C, TJ
  • Available in 5-pin SOT-23 DBV package
  • Buffers signals up to 1 kHz (see the Signal-Buffering LDO section)
  • Wide input operating voltage range (3 V to 40 V):
    • Absolute maximum input range: –40 V to +45 V
  • Wide output voltage range: 2 V to 30 V
  • Very-tight, output-tracking tolerance: 5 mV (max)
  • Low dropout voltage: 500 mV (max) at 70 mA
  • Reverse polarity protection
  • Reverse current protection
  • Combined reference and enable input
  • Low quiescent current at light loads (100-µA load):
    • 50 µA (max)
  • Wide ESR range:
    • Stable with 1-µF to 200-µF ceramic output capacitor, 1-mΩ to 3-Ω ESR
  • Overtemperature protection
  • Output short-circuit protection to ground and supply
  • Junction temperature: –40°C to +150°C, TJ
  • Available in 5-pin SOT-23 DBV package
  • Buffers signals up to 1 kHz (see the Signal-Buffering LDO section)

The TPS7B4255 is a low-dropout (LDO) voltage-tracking regulator, with high tracking accuracy and excellent load and line transient response. The device is available in a 5-pin, SOT-23 (DBV) package. The TPS7B4255 is designed to supply off-board sensors in industrial applications such as condition monitoring sensor systems. The device provides integrated protection features such as reverse polarity, output short to supply and ground, current limit, and thermal shutdown to protect against the high risk of cable failures in an off-board power system. The device is designed to survive a 45-V (absolute maximum) input voltage during extreme transient events.

A reference voltage applied at the ADJ/EN pin is effectively tracked with high accuracy for loads up to 70 mA. The high tracking accuracy provides accurate power supply to off-board modules and enables better accuracy when making measurements using ratiometric sensors.

By setting the ADJ/EN input pin low, the TPS7B4255 switches to standby mode and reduces the quiescent current to the minimum value.

The TPS7B4255 is a low-dropout (LDO) voltage-tracking regulator, with high tracking accuracy and excellent load and line transient response. The device is available in a 5-pin, SOT-23 (DBV) package. The TPS7B4255 is designed to supply off-board sensors in industrial applications such as condition monitoring sensor systems. The device provides integrated protection features such as reverse polarity, output short to supply and ground, current limit, and thermal shutdown to protect against the high risk of cable failures in an off-board power system. The device is designed to survive a 45-V (absolute maximum) input voltage during extreme transient events.

A reference voltage applied at the ADJ/EN pin is effectively tracked with high accuracy for loads up to 70 mA. The high tracking accuracy provides accurate power supply to off-board modules and enables better accuracy when making measurements using ratiometric sensors.

By setting the ADJ/EN input pin low, the TPS7B4255 switches to standby mode and reduces the quiescent current to the minimum value.
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* Data sheet TPS7B4255 70-mA, 40-V, Voltage-Tracking LDO With Voltage-Buffering Capability datasheet PDF | HTML 14 Dec 2022

Design & development

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Evaluation board

TPS7B4255EVM-062 — TPS7B4255 evaluation module for 70-mA 40-V voltage-tracking low-dropout (LDO) regulator

TPS7B4255EVM-062 evaluation module (EVM) is used to evaluate the operation and performance of the TPS7B4255-Q1 linear regulator for use in circuit applications.

This particular EVM configuration contains a 70-mA, high-voltage, voltage-tracking, low-dropout (LDO) regulator for automotive (...)

User guide: PDF | HTML
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Simulation model

TPS7B4255-Q1 PSpice Transient Model (Rev. A)

SBVM991A.ZIP (18 KB) - PSpice Model
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SOT-23 (DBV) 5 View options
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