Product details

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) 1.2 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (uVrms) 40 Iq (Typ) (mA) 1 Thermal resistance θJA (°C/W) 33 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Enable, Reverse current protection, Reverse voltage protection Accuracy (%) 3 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 340 Operating temperature range (C) -40 to 125
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) 1.2 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Noise (uVrms) 40 Iq (Typ) (mA) 1 Thermal resistance θJA (°C/W) 33 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Enable, Reverse current protection, Reverse voltage protection Accuracy (%) 3 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 340 Operating temperature range (C) -40 to 125
SOT-223 (DCQ) 6 23 mm² 6.5 x 3.5 SOT-223 (DCY) 4 46 mm² 6.5 x 7 TO-263 (KTT) 5 155 mm² 10.16 x 15.24
  • Optimized for Fast Transient Response
  • Output Current: 1.5 A
  • Dropout Voltage: 340 mV
  • Low Noise: 40 µVRMS (10 Hz to 100 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 (TL1963A Only)
  • Less Than 1-µA Quiescent Current in Shutdown
  • Stable With 10-µF Ceramic Output Capacitor
  • Reverse-Battery Protection
  • Reverse-Current Protection
  • APPLICATIONS
    • Industrial
    • Wireless Infrastructure
    • Radio-Frequency Systems
    • 3.3-V to 2.5-V Logic Power Supplies
    • Post Regulator for Switching Supplies

All other trademarks are the property of their respective owners

  • Optimized for Fast Transient Response
  • Output Current: 1.5 A
  • Dropout Voltage: 340 mV
  • Low Noise: 40 µVRMS (10 Hz to 100 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 (TL1963A Only)
  • Less Than 1-µA Quiescent Current in Shutdown
  • Stable With 10-µF Ceramic Output Capacitor
  • Reverse-Battery Protection
  • Reverse-Current Protection
  • APPLICATIONS
    • Industrial
    • Wireless Infrastructure
    • Radio-Frequency Systems
    • 3.3-V to 2.5-V Logic Power Supplies
    • Post Regulator for Switching Supplies

All other trademarks are the property of their respective owners

The TL1963A-xx 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 340 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 TL1963A-xx regulators have very low output noise, which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21 V to 20 V. The TL1963A-xx 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.

The TL1963A-xx 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 340 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 TL1963A-xx regulators have very low output noise, which makes them ideal for sensitive RF supply applications.

Output voltage range is from 1.21 V to 20 V. The TL1963A-xx 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.

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Technical documentation

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Type Title Date
* Data sheet TL1963A-xx 1.5-A Low-Noise Fast-Transient-Response Low-Dropout Regulator datasheet (Rev. G) PDF | HTML 14 Jan 2015
Application note Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D) 07 Apr 2021
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Test report TI Power Reference Design for Xilinx® Kintex®-7 (KC705) (Rev. A) 16 Dec 2014
Test report TI Power Reference Design for Xilinx® Artix®-7 (AC701) 12 May 2014
User guide PMP7977 User's Guide 11 Sep 2013
EVM User's guide TL1963EVM-384 (Rev. A) 08 Oct 2008

Design & development

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

Evaluation board

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The DDC2256AEVM evaluation module  (EVM)  is  an  evaluation  kit  for the DDC2256A,  a  256-channel,  current  input,  24-bit analog-to-digital (A/D) converter. The EVM kit, comprised of a DUT board and a capture board, contains two DDC2256A (...)

User guide: PDF
Evaluation board

TL1963A-18EVM — TL1963A-18EVM Evaluation Module

The TL1963A-18EVM facilitates evaluation of the TL1963A-18 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.

User guide: PDF
Not available on TI.com
Evaluation board

TL1963A-33EVM — TL1963A-33EVM Evaluation Module

The TL1963A-33EVM facilitates evaluation of the TL1963A-33 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.

User guide: PDF
Not available on TI.com
Evaluation board

TL1963AEVM — TL1963AEVM Evaluation Module

The TL1963AEVM facilitates evaluation of the TL1963A 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.

User guide: PDF
Not available on TI.com
Simulation model

TL1963A PSpice Transient Model

SLVMB45.ZIP (64 KB) - PSpice Model
Simulation model

TL1963A Unencrypted PSpice Transient Model

SLVMB46.ZIP (1 KB) - PSpice Model
PCB layout

PMP7977 PCB

TIDU151.PDF (6781 KB)
Reference designs

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This reference design details a methodology to use the DP83849 evaluation board to implement a 10/100BASE-TX to 10/100BASE-FX media converter, which enables copper based legacy equipment to be easily connected to a fiber network. Copper based Ethernet (10/100BASE-TX) has been widely used in grid (...)
Schematic: PDF
Reference designs

TIDM-THREEPHASE-BLDC-LC — Three-Phase BLDC and PMSM Medium Voltage Motor Control Solution

Spin and control three-phase brushless DC (BLDC) and brushless AC (BLAC) motors—or permanent magnet synchronous motors (PMSM)—using sensorless field oriented control (FOC). This design provides high-performance, power-efficient, and cost-effective control for sub-50V, 7A motors, ideal (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDM-THREEPHASE-BLDC-LC-INST — Three-Phase Brushless/PMSM Low Current Motor Control Solution with InstaSPIN Software

This reference design demonstrates a motor control solution for spinning medium voltage three-phase brushless DC (BLDC) and brushless AC (BLAC) motors- often referred to as permanent magnet synchronous motors (PMSM) - featuring the C2000™ InstaSPIN™ TMS320F28069M microcontroller and the DRV8312 (...)
Schematic: PDF
Reference designs

PMP7977 — Xilinx Artix 7 FPGA with PMBus Power Management Reference Design

The Artix 7 power management reference design board uses power modules, linear regulators, and a PMBus compliant system controller to supply all required core and auxiliary voltages needed by the FPGA, including DDR memory termination. A Digital Power graphical user interface is used to monitor the (...)
User guide: PDF
Schematic: PDF
Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
SOT-223 (DCQ) 6 View options
SOT-223 (DCY) 4 View options

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