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



Product details


Output options Adjustable Output, Dual 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 TI functional safety category Functional Safety-Capable Load capacitance (Min) (µF) 2.2 Rating Automotive Regulated outputs (#) 2 Features Enable, Reverse Current Protection, Reverse Voltage Protection, Adjustable Current Limit, Short-to-Battery Protection, Current Sense 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 & low-dropout (LDO) regulators

Package | Pins | Size

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


  • 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
open-in-new Find other Linear & low-dropout (LDO) regulators


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 & low-dropout (LDO) regulators
Similar products you might be interested in
open-in-new Compare products
Similar functionality to the compared device.
TPS7B7701-Q1 ACTIVE Automotive 300-mA, off-battery (40-V), adjustable antenna low-dropout voltage regulator The single-channel version of this LDO.

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 6
Type Title Date
* Data sheet TPS7B770x-Q1, Automotive, Single- and Dual-Channel Antenna LDO With Current Sense datasheet (Rev. C) Sep. 12, 2018
Application note TPS7B7702-Q1 Short Circuit Test Report Feb. 28, 2020
Functional safety information TPS7B770x-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 17, 2019
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
More literature Fundamentals of designing with LDOs in auto battery direct connect applications Feb. 27, 2017
User guide TPS7B7702-Q1 Evaluation Module User's Guide (Rev. A) Mar. 08, 2016

Design & development

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

Hardware development

document-generic User guide
The SPI to CAN FD SBC + LIN BoosterPack™ plug-in module features the TCAN4550-Q1 CAN FD controller with integrated transceiver providing microcontrollers without an integrated CAN FD controller, or those needing additional channels, access to CAN FD applications through a SPI interface (...)
  • TCAN4550-Q1 CAN FD controller with integrated transceiver and SPI interface
  • TLIN2029-Q1 fault protected LIN transceiver
  • TPS7B7702-Q1 automotive dual-channel LDO
  • Common DB9 connector for supply voltage, CAN FD, and LIN bus signals
  • Follows the BoosterPack pinout standard
document-generic User guide

The TPS7B7702EVM evaluation module (EVM) helps designers evaluate the operation and performance of TPS7B7702QPWPRQ1 antenna LDO. The TPS7B7702-Q1 is a monolithic integrated dual channel LDO with current sense in an HTSSOP package. The device is designed to provide a power (...)

  • 4.5-V to 45-V wide maximum input voltage range
  • Adjustable output voltage from 1.5 V to 20 V
  • 300-mA output current per channel
  • High accuracy current sense
  • Ability to distinguish all faults with current sense
  • Stable with an output capacitor with a value of 2.2 µF to 100 µF (ESR from 1 mΩ to 5 Ω)

Design tools & simulation

SLVMAT8A.ZIP (208 KB) - PSpice Model
SLVMBE4.ZIP (11 KB) - PSpice Model
SLVMBE5.ZIP (89 KB) - TINA-TI Spice Model
SLVMBE6.TSC (269 KB) - TINA-TI Reference Design

Reference designs

4 Channel Antenna LDO Reference Design with Digital Diagnostics and Integrated Protection
TIDA-01569 — This automotive reference design demonstrates an approach for powering remote, off-board loads, often over coaxial cables (i.e. "phantom power"). This design is capable of protecting against and digitally diagnosing different faults that off-board cabling is susceptible to. Reverse polarity, reverse (...)
document-generic Schematic
Automotive ADAS Reference Design for Four Camera Hub with MIPI CSI-2 Output
TIDA-01005 — This camera hub reference design allows connection of up to four 1.3-megapixel cameras to a TDA3x system-on-chip (SoC) evaluation module (EVM). Each camera connects to the hub through a single coax cable. Using FPD-Link III connections, the cameras are connected to a four-port deserializer. The (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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. ​​​​​​​​​​​​​​