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Product details

Parameters

Output options Adjustable Output, Fixed Output Iout (Max) (A) 1.5 Vin (Max) (V) 20 Vin (Min) (V) 2.1 Vout (Max) (V) 20 Vout (Min) (V) 1.5 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (uVrms) 35 Iq (Typ) (mA) 1 Thermal resistance θJA (°C/W) 28 Load capacitance (Min) (µF) 10 Rating Catalog Regulated outputs (#) 1 Features Enable, Reverse Current Protection Accuracy (%) 2.5 PSRR @ 100 KHz (dB) 38 Dropout voltage (Vdo) (Typ) (mV) 300 Operating temperature range (C) -40 to 125 open-in-new Find other Linear & low-dropout (LDO) regulators

Package | Pins | Size

SOT-223 (DCQ) 6 46 mm² 6.5 x 7.06 TO-263 (KTT) 5 155 mm² 10.16 x 15.24 open-in-new Find other Linear & low-dropout (LDO) regulators

Features

  • Optimized for Fast Transient Response
  • Output Current: 1.5 A
  • High Output Voltage Accuracy: 1% at 25°C
  • Dropout Voltage: 300 mV
  • Low Noise: 35 µVRMS (10 Hz to 100 kHz)
  • High Ripple Rejection: 68 dB at 1 kHz
  • 1-mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V
  • Adjustable Output from 1.21 V to 20 V (TPS7A4501 Only)
  • Less Than 1-µA Quiescent Current in Shutdown
  • Stable With 10-µF Ceramic Output Capacitor
  • Reverse-Battery Protection
  • Reverse Current Protection
open-in-new Find other Linear & low-dropout (LDO) regulators

Description

The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.

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

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Type Title Date
* Data sheet TPS7A45xx Low-Noise Fast-Transient-Response 1.5-A Low-Dropout Voltage Regulators datasheet (Rev. F) Nov. 18, 2015
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) Aug. 30, 2019
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
User guide TPS7A45xxEVM-385 (Rev. A) Oct. 08, 2008

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 TPS7A4501EVM-385 facilitates evaluation of the TPS7A4501 1.5A Low-Noise, Fast-Transient-Response Low-Dropout Regulator. The EVM allows the user to apply different input voltage levels (2.5V to 20V) and different loads (0 to 1.5A) and check the regulated output voltage for stability.

Features
  • Optimized for Fast Transient Response
  • Output Current: 1.5 A
  • High Output Voltage Accuracy: 1% at 25 degree C
  • Dropout Voltage: 300 mV
  • Low Noise: 35 µVRMS (10 Hz to 100 kHz)
  • High Ripple Rejection: 68 dB
  • 1-mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Less Than (...)

Design tools & simulation

SIMULATION MODEL Download
SLVM641A.ZIP (74 KB) - PSpice Model
SIMULATION MODEL Download
SLVM642.ZIP (3 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLVM643.TSC (10 KB) - TINA-TI Reference Design

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
SOT-223 (DCQ) 6 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

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