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TL1963A

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1.5-A, 20-V, low-dropout voltage regulator with reverse current & reverse voltage protection

Data sheet
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1.5-A, 20-V, low-dropout voltage regulator with reverse current & reverse voltage protection

TL1963A

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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) 1.2 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 Load capacitance (Min) (µF) 10 Rating Catalog 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 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-223 (DCQ) 6 46 mm² 6.5 x 7.06 SOT-223 (DCY) 4 46 mm² 6.5 x 7 TO-263 (KTT) 5 155 mm² 10.16 x 15.24 open-in-new Find other Linear regulators (LDO)

Features

  • 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

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Description

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) Jan. 14, 2015
Technical article What’s not in the power MOSFET data sheet part 2: voltage-dependent leakage currents Jul. 23, 2021
Application note Voltage Fed Full Bridge DC-DC & DC-AC Converter High-Freq Inverter Using C2000 (Rev. D) Apr. 07, 2021
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
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
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
User guide TI Power Reference Design for Xilinx® Kintex®-7 (KC705) (Rev. A) Dec. 16, 2014
User guide TI Power Reference Design for Xilinx® Artix®-7 (AC701) May 12, 2014
User guide PMP7977 User's Guide Sep. 11, 2013
User guide TL1963EVM-384 (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
2499
Description

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 (...)

Features
  • All-in-one solution for evaluating two DDC2256A devices in a system-like setting
  • On-board FPGA, memory, and USB interface allow for data capture and analysis of large sample datasets
  • Flexible supply configurations for simple or advanced experimentation
  • Various input voltage configurations allow for (...)
View details
EVALUATION BOARD Download
document-generic User guide
20
Description

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.

Features
  • 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
  • High Ripple Rejection: 68 dB
  • 1-mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Less Than 1-µAmp Quiescent Current in (...)
View details
EVALUATION BOARD Download
document-generic User guide
20
Description

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.

Features
  • 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
  • High Ripple Rejection: 68 dB
  • 1-mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Less Than 1-µAmp Quiescent Current in (...)
View details
EVALUATION BOARD Download
document-generic User guide
20
Description

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.

Features
  • 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
  • High Ripple Rejection: 68 dB
  • 1-mA Quiescent Current
  • No Protection Diodes Needed
  • Controlled Quiescent Current in Dropout
  • Less Than 1-µAmp Quiescent Current in (...)
View details

Design tools & simulation

SIMULATION MODEL Download
SLVMB45.ZIP (64 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB46.ZIP (1 KB) - PSpice Model
PCB LAYOUT Download
TIDU151.PDF (6781 KB)

Reference designs

REFERENCE DESIGNS Download
Copper-to-fiber 100BASE-FX or 1000BASE-X media converter reference design for grid applications
TIDA-00306 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Offline 25W power supply (12V @ 100mA)
PMP5554 — The PMP5554 is a reference design for a 25W offline power supply. It can operate from an universal input voltage range (85VAC to 265VAC). It's a flyback topology with 3 output voltages.
Design files
View details
REFERENCE DESIGNS Download
Three-Phase BLDC and PMSM Medium Voltage Motor Control Solution
TIDM-THREEPHASE-BLDC-LC — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Three-Phase Brushless/PMSM Low Current Motor Control Solution with InstaSPIN Software
TIDM-THREEPHASE-BLDC-LC-INST — 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 (...)
document-generic Schematic
REFERENCE DESIGNS Download
Analog Solution for Kintex 7
PMP7978 — Xilinx chose TI as the power solution vendor to power Kintex 7 FPGA (along with other analog solution from TI). You will find Schematic and bill of material fo the solution Xilinx used on the development kits.
REFERENCE DESIGNS Download
Xilinx Artix 7 FPGA with PMBus Power Management Reference Design
PMP7977 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
SOT-223 (DCQ) 6 View options
SOT-223 (DCY) 4 View options

Ordering & quality

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  • Ongoing reliability monitoring

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