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Product details

Parameters

Output options Fixed Output, Adjustable Output Iout (Max) (A) 0.5 Vin (Max) (V) 40 Vin (Min) (V) 3 Vout (Max) (V) 18 Vout (Min) (V) 1.2 Fixed output options (V) 3.3, 5 Iq (Typ) (mA) 0.02 Thermal resistance θJA (°C/W) 29.7 Load capacitance (Min) (µF) 2.2 Rating Automotive Regulated outputs (#) 1 Features Enable Accuracy (%) 1 PSRR @ 100 KHz (dB) 65 Dropout voltage (Vdo) (Typ) (mV) 370 Operating temperature range (C) -40 to 150 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

HSOIC (DDA) 8 open-in-new Find other Linear regulators (LDO)

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Input voltage range: 3 V to 40 V (42 V max)
  • Output voltage range:
    • Adjustable output: 1.2 V to 18 V
    • Fixed output: 3.3 V and 5 V
  • Maximum output current: 500 mA
  • Output voltage accuracy: ±1% (max)
  • Low dropout voltage:
    • 500 mV (max) at 450 mA (VOUT ≥ 3.3 V)
  • Low quiescent current:
    • 20 µA (typ) at light loads
    • 5 µA (max) when disabled
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1-V/µs VIN slew rate)
  • Dropout voltage: 555 mV (max) at VOUT ≥ 3.3 V
  • Power-good with programmable delay period
  • Stable with a 2.2-µF or larger capacitor
  • Package options:
    • 3-pin TO-252 package: (RθJA): 29.7°C/W
    • 8-pin SO-8 package: (RθJA): 41.8°C/W

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Description

The TPS7B86-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40 V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 20-µA quiescent current at light loads, the device is an optimal solution for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The device has a state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±1% over line, load, and temperature.

The device is equipped with a power-good output to indicate when the output voltage is close to its final value. The power-good delay can be adjusted by external components, thus allowing the delay time to be configured for a specific system.

The device is available in thermally conductive packaging to allow the device to efficiently transfer heat to the circuit board.




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Preproduction samples are available (PTPS7B8601QDDARQ1, PTPS7B8633QDDARQ1 and PTPS7B8650QDDARQ1). Request now

Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS7B86-Q1 500-mA, 40-V, Low-Dropout Regulator With Power-Good datasheet Jun. 17, 2020
User guides MLTLDO2EVM-037 Evaluation Module User's Guide May 22, 2020
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

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
29
Description

The MLTLDO2EVM-037 multipackage low-dropout (LDO) evaluation module (EVM) allows design engineers to evaluate the operation and performance of several common packages of linear regulators for possible use in their own circuit application. This EVM configuration contains a DDA, 3-pin and 5-pin KVU (...)

Features
  • Supports most LDO linear regulators in
    • DDA package
    • 3-pin and 5-pin KVU package
    • DCY package

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options
TO-252 (KVU) 5 View options

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