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Product details

Parameters

Output options Adjustable Output, Programmable Output Iout (Max) (A) 1 Vin (Max) (V) 36 Vin (Min) (V) 3 Vout (Max) (V) 34 Vout (Min) (V) 1.4 Noise (uVrms) 4 Iq (Typ) (mA) 0.58 Thermal resistance θJA (°C/W) 33 Load capacitance (Min) (µF) 10 Rating Automotive Regulated outputs (#) 1 Features Enable Accuracy (%) 2.5 PSRR @ 100 KHz (dB) 60 Dropout voltage (Vdo) (Typ) (mV) 216 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

VQFN (RGW) 20 25 mm² 5 x 5 open-in-new Find other Linear regulators (LDO)

Features

  • 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 Level 2
    • Device CDM ESD Classification Level C4A
  • Input Voltage: 3 V to 35 V
  • Operating Junction Temperature: –40°C to +145°C
  • Output Voltage Noise:
    4.2 µVRMS (10 Hz–100 kHz)
  • Power-Supply Rejection Ratio:
    • 82 dB (100 Hz)
    • ≥ 55 dB (10 Hz–10 MHz)
  • Two Output Voltage Modes:
    • ANY-OUT™ Version (User-Programmable Output via PCB Layout):
      • Output Voltage: 1.4 V to 20.5 V
    • Adjustable Operation:
      • Output Voltage: 1.4 V to 34 V
  • Output Current: 1 A
  • Thermal resistance: θJA = 31.1°C/W
  • Dropout Voltage: 307 mV at 1 A
  • CMOS Logic Level-Compatible Enable Pin
  • Built-In Fixed Current Limit and
    Thermal Shutdown

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Description

The TPS7A47-Q1 device is a positive voltage (35 V), ultra-low-noise (4.2 µVRMS) low-dropout linear regulator (LDO) capable of sourcing a 1-A load.

The TPS7A47-Q1 output voltage can be configured with a user-programmable printed circuit board (PCB) layout (up to 20.5 V), or adjustable (up to 34 V) with external feedback resistors.

The TPS7A47-Q1 is designed with bipolar technology primarily for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This feature makes the device ideal for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry.

In addition, the TPS7A47-Q1 is ideal for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversions, maximum system performance is ensured in sensitive instrumentation, audio, and RF applications.

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TPS7A88-Q1 ACTIVE Automotive 1-A, low-noise, high-accuracy, dual-channel adjustable low-dropout voltage regulator A lower noise, higher PSRR dual-channel LDO.

Technical documentation

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Type Title Date
* Datasheet TPS7A47-Q1 35-V, 1-A, 4.2-µVRMS, RF LDO Voltage Regulator datasheet Aug. 22, 2017
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018
Technical article LDO basics: noise – part 1 Jun. 14, 2017
User guide TPS7A47xx User's Guide (Rev. A) Aug. 02, 2013

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
20
Description
The TPS7A4701EVM-094 is a fully assembled and tested evaluation module (EVM) for evaluating the TPS7A47 ultra-low-noise low-dropout (LDO) regulator at adjustable output voltages that range from 1.4 V to 34 V. The EVM circuit is configured to be a reference design for engineering applications (...)
Features
  • Input voltage range: 3 V to 36 V
  • Programmable from 1.4 V to 34 V; pin-strap output voltage from 1.4 V to 18 V
  • Low dropout: 600 mV at 1 A
  • 3.5 µVRMS (10 Hz, 100 KHz)
  • <25 nV/√Hz (10 Hz, 1 MHz)
  • Built-in fixed current limit and thermal shutdown
  • CMOS logic-level-compatible enable (EN) pin
  • Maximum output current of (...)

Design tools & simulation

SIMULATION MODEL Download
SBVM364A.ZIP (40 KB) - PSpice Model
SIMULATION MODEL Download
SBVM401.ZIP (15 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBVM402.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBVM621A.ZIP (2 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
VQFN (RGW) 20 View options

Ordering & quality

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  • 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.

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