Automotive 300-mA, off-battery (40-V), adjustable antenna low-dropout voltage regulator



Product details


Output options Adjustable Output Iout (Max) (A) 0.3 Vin (Max) (V) 40 Vin (Min) (V) 4 Vout (Max) (V) 20 Vout (Min) (V) 1.5 Iq (Typ) (mA) 0.6 Thermal resistance θJA (°C/W) 40 Approx. price (US$) 0.88 | 1ku TI functional safety category Functional Safety-Capable Load capacitance (Min) (µF) 2.2 Rating Automotive Regulated outputs (#) 1 Features Adjustable Current Limit, Current Sense, Enable, Power Good, Reverse Current Protection, Reverse Voltage Protection Accuracy (%) 2 PSRR @ 100 KHz (dB) 60 Dropout voltage (Vdo) (Typ) (mV) 350 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other Linear regulators (LDO)


  • 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 2
    • Device CDM ESD Classification C4B
  • Single and Dual-Channel LDO With Current Sense and Adjustable Current-Limit
  • 4.5-V to 40-V Wide Input Voltage Range, 45-V Load Dump
  • Power Switch Mode When Tying FB to GND
  • 1.5-V to 20-V Adjustable Output Voltage
  • Up to 300-mA Output Current per Channel
  • Adjustable Current-Limit With External Resistor
  • High Accuracy Current-Sense to Detect Antenna Open Condition at Low Current Without Further Calibration
  • High Power-Supply Rejection Ratio: Typical 73 dB at 100 Hz
  • Integrated Reverse-Polarity Protection, Down to –40 V and No Need for External Diode
  • 500-mV Max Dropout Voltage at 100-mA Load
  • Stable With Output Capacitor in 2.2-µF to 100-µF Range (ESR 1 mΩ to 5 Ω)
  • Integrated Protection and Diagnostics
    • Thermal Shutdown
    • Undervoltage Lockout (UVLO)
    • Short-Circuit Protection
    • Reverse Battery Polarity Protection
    • Reverse-Current Protection
    • Output Short-to-Battery Protection
    • Output Inductive Load Clamp
    • Multiplexing Current Sense Between Channels and Devices
    • Ability to Distinguish All Faults With Current Sense
  • 16-Pin HTSSOP PowerPAD™ Package

All trademarks are the property of their respective owners.

open-in-new Find other Linear regulators (LDO)


The TPS7B770x-Q1 family of devices feature a single and dual, high-voltage low-dropout regulator (LDO) with current sensing, designed to operate with a wide input-voltage range from 4.5 V to 40 V (45-V load dump protection). These devices provide power to the low-noise amplifiers of the active antenna through a coax cable with 300 mA per channel current. Each channel also provides an adjustable output voltage from 1.5 V to 20 V.

These devices provide diagnostics through the current sense and error pins. To monitor the load current, a high-side current-sense circuitry provides a proportional analog output to the sensed load current. The accurate current sense allows detection of open, normal, and short-circuit conditions without the need for further calibration. Current sense can be multiplexed between channels and devices to save analog-to-digital converter (ADC) resources. Each channel also implements adjustable current limit with an external resistor.

An integrated reverse polarity diode eliminates the need for an external diode. These devices feature standard thermal shutdown, short-to-battery protection on the output, and reverse current protection. Each channel has internal inductive clamp protection on the output during inductive switch off.

These devices operate over a –40°C to +125°C ambient temperature range.

open-in-new Find other Linear regulators (LDO)
Similar products you might be interested in
open-in-new Compare products
Similar but not functionally equivalent to the compared device:
TPS7B7702-Q1 ACTIVE Automotive 300-mA, off-battery (40-V), dual-channel adjustable antenna low-dropout voltage regulator The dual-channel version of this LDO.

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet TPS7B770x-Q1, Automotive, Single- and Dual-Channel Antenna LDO With Current Sense datasheet (Rev. C) Sep. 12, 2018
Application notes TPS7B770x-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 17, 2019
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
More literature Fundamentals of designing with LDOs in auto battery direct connect applications Feb. 27, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SLVMBE3.ZIP (193 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​