TPL8771Q
42-V 300-mA Low-dropout Linear Regulator with Accurate Current Sense and Protection
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Overview
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Development Resources
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Application
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Ordering Detail
Overview
The TPL8771Q is a 1-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 TPL8771Q has one adjustable output. Connect an external resistor divider, and the output voltage can be set from 1.5 V to 20 V for each channel separately. The output current is 300 mA, which is suitable for the phantom power or low-noise active antenna power in automotive.
The TPL8771Q offers the SENSE pin for current sensing. During normal operation, the output current can be obtained by measuring the voltage at the SENSE 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 shortcircuit to ground, over temperature, reverse current or output short-circuit to battery, and reverse input polarity.
The TPL8771Q provides an ETSSOP16 package with a thermal pad and is guaranteed to operate with the ambient temperature range from –40°C to +125°C.
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Status
Production
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Rating
Automotive
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Minimum Input Voltage (V)
3.5
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Maximum Input Voltage (V)
42
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Output Voltage (V)
ADJ (1.5 to 20)
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Accuracy (max)
±2%
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Max Output Current (mA)
300
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Iq (mA)
0.43
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Dropout (mV)
900
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PSRR (dB)
80
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Noise (μVRMS)
350
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Temperature Range (℃)
-40 to +125
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Package
ETSSOP16
Development Resources
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Documentation
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Show FilterHidden FilterDocumentation
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Data Sheet
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Selection Guide
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Newsletter
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Application Note
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Technical Note
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User Guide
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Test Report
- Document Name
- Type
- Language
- Date
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Selection GuideEnglish07/02/2025
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Selection GuideEnglish07/01/2025
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Data SheetEnglish07/22/2025
42-V 300-mA Low-dropout Linear Regulator with Accurate Current Sense and Protection
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Application
• Automotive Infotainment Active Antenna Power Supply
• Automotive Telematics Active Antenna Power Supply
• Automotive Surround View Camera Power Supply
Ordering Detail
| Order Part Number | Buy | Samples | Rating | Feature | Status | 1ku Price | Release Date | Package | Lead time (week) | MSL | Packing | MPQ | CPQ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TPL8771Q-TSBR-S | Automotive Grade | / | Production | / | 2025-07-18 | ETSSOP16 | 27 | MSL3 | T&R | 3000 | 15000 |
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