TPL8772Q

42-V 300-mA 2-Channel Low-Dropout Linear Regulator with Accurate Current Sense and Protection

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Overview

The TPL8772Q is a 2-channel wide-input-voltage lowdropout linear regulator integrated with output current sense and diagnosis function. This device supports operating voltage range from 4.5 V to 42 V, with a maximum transient voltage of 45 V.

The TPL8772Q has two individual adjustable outputs. Connecting an external resistor divider, the output voltage can be set from 1.5 V to 20 V for each channel separately. The output current of each channel is 300 mA, which is suitable for the phantom power or low-noise active antenna power in automotive.

The TPL8772Q offers SENSE1 pin and SENSE2 pin for each-channel current sensing. During normal operation, the output current of each channel can be obtained by measuring the voltage at the SENSE1/2 pin, for which the sense pin current is proportional to the current flow through the internal power MOS. Besides, by monitoring the sense pin voltage, it is easy to distinguish different faults, such as, open load, overload, output short-circuit to ground, over temperature, reverse current or output short-circuit to battery, and reverse input polarity.

The TPL8772Q provides an ETSSOP16 package with a thermal pad and is guaranteed to operate with the ambient temperature range from –40°C to +125°C.

Status

Production
Rating

Automotive
Minimum Input Voltage (V)

4.5
Maximum Input Voltage (V)

42
Output Voltage (V)

ADJ (1.5 to 20)
Accuracy (max)

±2%
Maximum Output Current (mA)

300
Iq (mA)

0.43
Dropout (mV)

900
PSRR (dB)

80
Noise (μVRMS)

350
Temperature Range (°C)

-40 to +150
Package

ETSSOP16

Development Resources

Documentation

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Documentation
- Data Sheet
- Selection Guide
- Application Note
- Technical Note
- User Guide
- Test Report
- Document Name
- Type
- Language
- Date
- 3PEAK Automotive Products Selection Guide
  
  Selection Guide
  
  English
  
  03/20/2024
- Datasheet_TPL8772Q
  
  Data Sheet
  
  English
  
  09/02/2024
  
  42-V 300-mA 2-Channel Low-Dropout Linear Regulator with Accurate Current Sense and Protection
- Introduction to Latch-up and the Preventive Measures
  
  Technical Note
  
  English
  
  01/19/2024
- PSRR Measurement for LDO
  
  Technical Note
  
  English
  
  01/19/2024
- Application Tips on ESD-EOS
  
  Technical Note
  
  English
  
  01/19/2024
- 3PEAK Analog Products Selection Guide
  
  Selection Guide
  
  English
  
  01/19/2024