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

TPS7B7702-Q1

ACTIVE

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 Rating Automotive Load capacitance (Min) (µF) 2.2 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
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 Rating Automotive Load capacitance (Min) (µF) 2.2 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
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet TPS7B770x-Q1, Automotive, Single- and Dual-Channel Antenna LDO With Current Sense datasheet (Rev. C) 12 Sep 2018
Application note TPS7B7702-Q1 Short Circuit Test Report 28 Feb 2020
Functional safety information TPS7B770x-Q1 Functional Safety FIT Rate and Failure Mode Distribution 17 Dec 2019
Technical article LDO Basics: Preventing reverse current 25 Jul 2018
More literature Fundamentals of designing with LDOs in auto battery direct connect applications 27 Feb 2017
User guide TPS7B7702-Q1 Evaluation Module User's Guide (Rev. A) 08 Mar 2016

Design & development

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Simulation model

TPS7B7702-Q1 PSpice Transient Model (Rev. A)

SLVMAT8A.ZIP (208 KB) - PSpice Model
Simulation model

TPS7B7702-Q1 Unencrypted PSpice Transient Model

SLVMBE4.ZIP (11 KB) - PSpice Model
Simulation model

TPS7B7702-Q1 TINA-TI Transient Spice Model

SLVMBE5.ZIP (89 KB) - TINA-TI Spice Model
Simulation model

TPS7B7702-Q1 TINA-TI Reference Design

SLVMBE6.TSC (269 KB) - TINA-TI Reference Design
Reference designs

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