TL1963A-25KTTR Texas Instruments Integrated Circuit (TO-263) In Stock
TL1963A-25KTTR is a fixed 2.5 V, 1.5 A low-dropout LDO regulator from Texas Instruments with low noise and fast transient response, accepting 3 V to 20 V input and housed in a 5-pin SOT-223 package for powering noise-sensitive analog and RF loads in consumer and industrial applications.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- TL1963A-25KTTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6000(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.5 V output, 1.5 A continuous load current capability
- Typical dropout voltage of only 0.34 V at full 1.5 A load
- Low output noise for clean analog, RF, and DSP supply rails
- Fast transient response for dynamic load current variations
- Wide 3 V to 20 V input range compatible with 5 V, 12 V, and unregulated adapters
- 5-pin SOT-223 package with exposed pad for efficient heat dissipation
Applications
TL1963A-25KTTR is targeted at powering noise-sensitive analog circuits, RF front ends, and high-speed DSP cores where supply ripple and transient voltage deviations must be minimized. Its 1.5 A output capacity suits high-current loads such as FPGAs, wireless module power rails, and precision data converters that experience rapid load steps. The wide 3 V to 20 V input range also makes it useful in post-rectifier filtering stages for benchtop instruments, portable test equipment, and low-noise amplifier supply networks.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.55V |
| Dropout Voltage1-Nom | 0.34V |
| Input Voltage Absolute-Max | 20V |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 3V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.01% |
| Load Regulation-Max | 0.03% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 2.575V |
| Output Voltage1-Min | 2.412V |
| Output Voltage1-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP5H,.6,67TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3% |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much current can TL1963A-25KTTR supply continuously, and what is its dropout at full load?
TL1963A-25KTTR delivers up to 1.5 A of continuous output current with a typical dropout voltage of 0.34 V and a maximum of 0.55 V at that current level. This means the device maintains a regulated 2.5 V output as long as the input stays above approximately 3.05 V typical, allowing operation from near-discharged lithium cells or tightly regulated 3.3 V pre-regulators.
Why does TL1963A-25KTTR's low-noise design matter for RF or ADC power supply applications?
High-frequency output noise on a power supply rail couples directly into sensitive analog and RF circuits, raising ADC noise floors and degrading RF receiver signal-to-noise ratios. TL1963A-25KTTR is designed with low output noise to minimize this coupling, making it suitable as the dedicated supply for 12-bit to 24-bit ADC reference rails, low-phase-noise PLL charge pumps, and sub-GHz or 2.4 GHz RF transceiver VCC pins where microvolt-level noise matters.
What input voltage range does TL1963A-25KTTR accept, and which power sources can feed it?
TL1963A-25KTTR accepts input voltages from 3 V to 20 V, with an absolute maximum of 20 V. This range covers 5 V USB power, 9 V wall adapters, 12 V automotive or industrial rails, and unregulated rectified supplies up to 20 V, making the device versatile for multi-supply designs without requiring a dedicated pre-regulator to bring the input within range.
How does the fast transient response of TL1963A-25KTTR help in FPGA or digital load applications?
FPGAs and digital ICs draw large current pulses during switching activity, causing supply voltage droop if the regulator cannot respond quickly. TL1963A-25KTTR's fast transient response minimizes the output voltage deviation during these step-load events, keeping the 2.5 V rail within tolerance even when load current changes by hundreds of milliamps within microseconds. This reduces the need for excessive bulk output capacitance on the FPGA I/O or core supply rail.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.1000 | $3.10 |
| 29+ | $2.4000 | $69.60 |
| 50+ | $1.7489 | $87.44 |
| 150+ | $1.6744 | $251.16 |
| 250+ | $1.6000 | $400.00 |
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