Home Power management Linear & low-dropout (LDO) regulators
Home
Power management
Linear & low-dropout (LDO) regulators
NEW

TPS7B4261-Q1

PREVIEW

Automotive 300mA 40V voltage-tracking low-dropout regulator with independent enable and power good

Order now
Data sheet

TPS7B4261-Q1

PREVIEW
Data sheet Order now

Product details

Output options Tracking Output Iout (max) (A) 0.3 Vin (max) (V) 40 Vin (min) (V) 3.3 Vout (max) (V) 40 Vout (min) (V) 2 Rating Automotive Noise (µVrms) 150 Iq (typ) (mA) 0.055 Thermal resistance θJA (°C/W) 48 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good, Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Dropout voltage (Vdo) (typ) (mV) 300 Operating temperature range (°C) -40 to 125
Output options Tracking Output Iout (max) (A) 0.3 Vin (max) (V) 40 Vin (min) (V) 3.3 Vout (max) (V) 40 Vout (min) (V) 2 Rating Automotive Noise (µVrms) 150 Iq (typ) (mA) 0.055 Thermal resistance θJA (°C/W) 48 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good, Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Dropout voltage (Vdo) (typ) (mV) 300 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Wide input voltage range:
    • Absolute maximum range: –40V to 45V
    • Operating range: 3.3V to 40V
  • Wide output voltage range: 2V to 40V
  • Maximum output current: 300mA
  • Very tight output-tracking tolerance: 6mV (max)
  • Low dropout voltage: 330mV at 200mA
  • Independent enable pin functionality
  • Power-good functionality detects under- and overvoltage conditions
  • Low quiescent current at light load: 55µA
  • Stable over a wide range of ceramic output capacitor values:
    • COUT range: 1µF to 100µF
    • ESR range: 1mΩ to 2Ω
  • Integrated protection features:
    • Reverse current protection
    • Reverse polarity protection
    • Overtemperature protection
    • Protection against output short circuit to ground and supply
  • Available in a low thermal resistance, 8-pin package:
    • HSOIC (DDA), RθJA = 48℃/W
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Wide input voltage range:
    • Absolute maximum range: –40V to 45V
    • Operating range: 3.3V to 40V
  • Wide output voltage range: 2V to 40V
  • Maximum output current: 300mA
  • Very tight output-tracking tolerance: 6mV (max)
  • Low dropout voltage: 330mV at 200mA
  • Independent enable pin functionality
  • Power-good functionality detects under- and overvoltage conditions
  • Low quiescent current at light load: 55µA
  • Stable over a wide range of ceramic output capacitor values:
    • COUT range: 1µF to 100µF
    • ESR range: 1mΩ to 2Ω
  • Integrated protection features:
    • Reverse current protection
    • Reverse polarity protection
    • Overtemperature protection
    • Protection against output short circuit to ground and supply
  • Available in a low thermal resistance, 8-pin package:
    • HSOIC (DDA), RθJA = 48℃/W

The TPS7B4261-Q1 is a monolithic, integrated low-dropout voltage tracker. The device is available in an 8-pin HSOIC package. The TPS7B4261-Q1 is designed to supply off-board sensors in an automotive environment. The high 300mA current rating of the device potentially allows a single TPS7B4261-Q1 to power multiple off-board sensors simulataneously. Because the risk of failure in cables that deliver off-board power is high, the device comes with integrated protection features against fault conditions such as short to battery, reverse polarity, output short to ground (current limit), and overtemperature (thermal shutdown). The device incorporates a back-to-back P-channel metal-oxide semiconductor field-effect transistor (PMOS) topology. This topology eliminates the need for an otherwise required external diode that helps protect against fault conditions that result in flow of reverse current. The device is designed to handle a 45V (absolute maximum) input voltage and survive the automotive load dump transient conditions.

A reference voltage applied at the adjustable input pin (ADJ) is tracked with a very tight 6mV (max) tolerance across line, load, and temperature at the OUT pin. This tight tracking tolerance enables the TPS7B4261-Q1 to deliver a power-supply voltage with high precision for loads up to 300mA. The TPS7B4261-Q1 features an independent enable pin (EN) and power-good functionality that detects both under- and overvoltage fault conditions.

By setting the EN input pin low, the TPS7B4261-Q1 switches to standby mode, in which the quiescent current consumption of the low-dropout regulator (LDO) reduces to less than 3.8µA (max).

The TPS7B4261-Q1 provides an effective buffer to the reference voltage of an ADC and securely transmits this voltage (or a scaled version thereof) over a long cable to power off-board sensors. If the sensor is ratiometric and the output is sampled by the ADC, the described features of the TPS7B4261-Q1 help significantly improve the reliability and accuracy of the sensor measurements.

The TPS7B4261-Q1 is a monolithic, integrated low-dropout voltage tracker. The device is available in an 8-pin HSOIC package. The TPS7B4261-Q1 is designed to supply off-board sensors in an automotive environment. The high 300mA current rating of the device potentially allows a single TPS7B4261-Q1 to power multiple off-board sensors simulataneously. Because the risk of failure in cables that deliver off-board power is high, the device comes with integrated protection features against fault conditions such as short to battery, reverse polarity, output short to ground (current limit), and overtemperature (thermal shutdown). The device incorporates a back-to-back P-channel metal-oxide semiconductor field-effect transistor (PMOS) topology. This topology eliminates the need for an otherwise required external diode that helps protect against fault conditions that result in flow of reverse current. The device is designed to handle a 45V (absolute maximum) input voltage and survive the automotive load dump transient conditions.

A reference voltage applied at the adjustable input pin (ADJ) is tracked with a very tight 6mV (max) tolerance across line, load, and temperature at the OUT pin. This tight tracking tolerance enables the TPS7B4261-Q1 to deliver a power-supply voltage with high precision for loads up to 300mA. The TPS7B4261-Q1 features an independent enable pin (EN) and power-good functionality that detects both under- and overvoltage fault conditions.

By setting the EN input pin low, the TPS7B4261-Q1 switches to standby mode, in which the quiescent current consumption of the low-dropout regulator (LDO) reduces to less than 3.8µA (max).

The TPS7B4261-Q1 provides an effective buffer to the reference voltage of an ADC and securely transmits this voltage (or a scaled version thereof) over a long cable to power off-board sensors. If the sensor is ratiometric and the output is sampled by the ADC, the described features of the TPS7B4261-Q1 help significantly improve the reliability and accuracy of the sensor measurements.
filter Find other Linear & low-dropout (LDO) regulators
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet TPS7B4261-Q1 Automotive, 300mA, 40V, Voltage Tracking LDO With PG datasheet PDF | HTML 10 Jan 2025
EVM User's guide TPS7B4261-Q1 General-Purpose Tracker LDO Evaluation Module User's Guide PDF | HTML 31 Jan 2025

Design & development

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

Evaluation board

TPS7B4261EVM-151 — TPS7B4261-Q1 evaluation module

The TPS7B4261EVM-151 evaluation module (EVM) that helps design engineers evaluate the operation and performance of the TPS7B4261-Q1 tracker low-dropout (LDO) linear regulator for use in circuit applications. The configuration of the TPS7B4261EVM-151 contains pads for external components for (...)
User guide: PDF | HTML
Not available on TI.com
Package Pins CAD symbols, footprints & 3D models
HSOIC (DDA) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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

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

View all forum topics

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. ​​​​​​​​​​​​​​

Videos