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Microchip Technology TC1269-2.5VUATR
- Part No.:
- TC1269-2.5VUATR
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC1269-2.5VUATR.pdf
- Description:
- IC REG LINEAR 2.5V 300MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,650
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Product details
Overview
TC1269-2.5VUATR from Microchip Technology is a fixed-output 2.5V CMOS low-dropout (LDO) regulator with ±0.5% output voltage accuracy, 300mA maximum output current, and ultra-low 50µA typical supply current at full load. It features shutdown control, bypass input for noise reduction, and operates across –40°C to +125°C in battery-powered medical instruments and portable computing systems.
For engineers reviewing the TC1269-2.5VUATR datasheet, TC1269-2.5VUATR pinout, TC1269-2.5VUATR application, or TC1269-2.5VUATR equivalent, key selection criteria include dropout voltage (240mV at 300mA), thermal shutdown protection, 0.05µA shutdown current, and MSOP-8 package compatibility with space-constrained linear post-regulation designs.
Technical Context
The TC1269-2.5VUATR implements a CMOS-based LDO architecture with internal reference bypass capability via Pin 5 (Bypass), enabling 260nV/√Hz output noise performance when a 470pF capacitor is applied. Its shutdown logic accepts CMOS-compatible thresholds (VIH ≥ 45% VIN, VIL ≤ 15% VIN) and drives VOUT to 0V with 0.05µA quiescent current during disable.
Stability is achieved with only 1µF output capacitance (ESR 0.1–5.0Ω), and it delivers fast transient response due to constant supply current independent of load - unlike bipolar predecessors. Over-current and over-temperature protection are integrated, with thermal shutdown activating at ~150°C and recovery at ~140°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±0.5% (±12.5mV) - ensures stable core voltage for precision analog or low-voltage microcontroller rails |
| Max Output Current | 300mA - supports moderate-power peripherals such as sensors, RF front-ends, or display drivers |
| Dropout Voltage | 240mV at 300mA - enables operation from 2.74V input while maintaining 2.5V output, critical for single-cell Li-ion or alkaline systems |
| Supply Current | 50µA typical at full load - extends battery life significantly versus bipolar LDOs (20–60× lower) |
| Shutdown Current | 0.05µA typical - reduces system standby power to nanoampere level for always-on monitoring circuits |
| Output Noise | 260nV/√Hz at 1kHz - meets low-noise requirements for ADC references, audio biasing, or RF synthesizer supplies |
| PSRR | 50dB at ≤120Hz - suppresses ripple from switching power supply inputs in hybrid SMPS/LDO architectures |
Pinout & Package
TC1269-2.5VUATR is housed in an 8-pin MSOP package (3.0mm × 3.0mm × 1.1mm body, 0.65mm pitch), optimized for high-density PCB layouts and thermal performance via lead conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output terminal | Delivers stable 2.5V to load; requires ≥1µF ceramic or tantalum capacitor to ground for stability |
| NC (Pin 2) | No-connect terminal | Internally unconnected; must remain floating or grounded per layout best practice - no routing or soldering required |
| NC (Pin 3) | No-connect terminal | Internally unconnected; electrically isolated - no functional impact if left unpopulated |
| GND (Pin 4) | Ground reference | Primary return path for load current and internal circuitry; connects to system ground plane for noise and thermal management |
| Bypass (Pin 5) | Reference bypass input | Accepts 470pF capacitor to ground to reduce internal reference noise, lowering output noise by >50% in sensitive applications |
| NC (Pin 6) | No-connect terminal | Not bonded or connected internally - no electrical function; avoid routing or termination |
| SHDN (Pin 7) | Active-high shutdown control | Drives regulator into ultra-low-power state (<0.05µA) when pulled ≤15% VIN; compatible with GPIO or power sequencer outputs |
| VIN (Pin 8) | Unregulated input supply | Accepts 2.74V–6.0V input; must be decoupled with ≥1µF capacitor near pin to minimize PSRR degradation and input transients |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ground current | 50µA typical at full 300mA load - enables multi-year battery operation in portable instrumentation without sacrificing regulation accuracy |
| Low-noise Bypass input | 260nV/√Hz output noise with 470pF on Pin 5 - eliminates need for external filtering in precision analog signal chains |
| Fast load transient response | Maintains regulation during 0–300mA step changes without external compensation - simplifies design for dynamic loads like wireless transceivers |
| Thermal & over-current protection | Auto-shutdown at ~150°C junction temperature and current limiting at ~600mA - prevents damage during fault conditions without external circuitry |
| MSOP-8 footprint | 3.0mm × 3.0mm body with 0.65mm pitch - provides 40% board area reduction vs. SOIC-8 while supporting automated assembly and thermal dissipation via wide copper pours |
Applications
| Battery-Powered Medical Sensors | Portable Digital Cameras |
|---|---|
|
Use Scenario: Powering low-noise analog front-ends in handheld ECG or pulse oximetry units operating from single-cell lithium batteries. IC Role / Device Role / Timing Role: Primary 2.5V LDO supplying ADC reference and op-amp bias rails with minimal added noise or dropout-induced brownout risk. Use Value: 260nV/√Hz noise and 240mV dropout enable accurate sub-mV signal acquisition even at end-of-battery-life (2.74V input). |
Use Scenario: Providing clean, regulated 2.5V to image sensor interface logic and flash memory controllers during burst capture mode. IC Role / Device Role / Timing Role: Post-regulator downstream of a DC-DC converter, delivering stable voltage during high-current image processing bursts. Use Value: 300mA capability and fast transient response prevent voltage sag that could corrupt frame data or trigger reset events. |
| Cellular/GSM Handsets | Linear Post-Regulator for SMPS |
|
Use Scenario: Supplying 2.5V to baseband processor I/O banks or RF transceiver bias circuits in dual-mode GSM/PHS phones. IC Role / Device Role / Timing Role: Low-quiescent LDO managing power sequencing and shutdown coordination with baseband SoC control signals. Use Value: 0.05µA shutdown current and CMOS-compatible SHDN threshold allow deep-sleep states compliant with 3GPP power class requirements. |
Use Scenario: Cleaning residual ripple from a 3.3V buck converter output to feed noise-sensitive analog subsystems in industrial PLC modules. IC Role / Device Role / Timing Role: Ripple-suppression LDO placed after primary SMPS stage, leveraging 50dB PSRR below 120Hz. Use Value: Eliminates need for bulky LC filters while achieving <10µV RMS ripple - reducing BOM cost and board area by >30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2502E/TO | 250mA max output, 1.6µA quiescent current, TO-92 package - lower IQ but reduced current and larger footprint | Suitable for ultra-low-power sensor nodes where 300mA headroom is unnecessary and through-hole assembly is preferred | Select MCP1700-2502E/TO only when board space allows TO-92 and load never exceeds 250mA; not drop-in for TC1269-2.5VUATR's MSOP-8 layout |
| TCS2117-2.5V | 2.5V fixed, 300mA, 65µA IQ, SOT-23-5 - similar performance but lacks Bypass pin and has higher noise (450nV/√Hz) | Fits compact SOT-23 layouts but cannot match TC1269-2.5VUATR's noise performance in precision analog supply roles | Choose TCS2117-2.5V only when Bypass functionality is unused and board area constraints prohibit MSOP-8; verify noise margin in final design |
Compared with MCP1700-2502E/TO and TCS2117-2.5V, TC1269-2.5VUATR uniquely combines 300mA drive, 50µA IQ, 260nV/√Hz noise via Bypass, and MSOP-8 thermal efficiency - making it optimal for space-constrained, noise-sensitive, battery-critical systems where all three attributes are simultaneously required.
Availability
TC1269-2.5VUATR is available at Aetrix Electronics and suitable for battery-operated medical instruments, portable digital cameras, and cellular handset power management requiring stable component supply and long-term lifecycle support.
Supply support for TC1269-2.5VUATR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified manufacturing and global technical support infrastructure.
The TC1269 product line was designed as a CMOS-based LDO upgrade to legacy bipolar regulators - targeting high-accuracy, low-noise, low-quiescent power delivery in portable and medical electronics where battery life and signal integrity are critical.
FAQ
What is the maximum input voltage rating for the TC1269-2.5VUATR?
The TC1269-2.5VUATR has an absolute maximum input voltage of 6.5V, but its recommended operating input voltage range is up to 6.0V. Exceeding 6.0V may compromise long-term reliability or trigger thermal shutdown under load. The device is optimized for inputs between 2.74V (2.5V + dropout) and 6.0V in standard applications.
Does the TC1269-2.5VUATR require an external capacitor on the Bypass pin?
No - the Bypass pin (Pin 5) of the TC1269-2.5VUATR is optional. A 470pF capacitor to ground reduces output noise to 260nV/√Hz; omitting it results in higher noise but retains full regulation. Larger capacitors increase startup time and are not recommended unless validated for specific noise targets.
Can the TC1269-2.5VUATR be used without connecting the SHDN pin?
Yes - the TC1269-2.5VUATR operates normally when SHDN (Pin 7) is tied directly to VIN. This configures permanent enable mode. Leaving SHDN floating is not recommended; it must be actively driven high or pulled up to VIN to ensure reliable operation and avoid unintended shutdown.
What output capacitor value is required for stability with the TC1269-2.5VUATR?
The TC1269-2.5VUATR is stable with a minimum 1µF output capacitor (ceramic or tantalum) having ESR between 0.1Ω and 5.0Ω. Values below 1µF risk instability; values above improve transient response but do not affect basic regulation. Aluminum electrolytics are discouraged below –25°C due to freezing effects.
Is the TC1269-2.5VUATR RoHS compliant and halogen-free?
Yes - the TC1269-2.5VUATR is manufactured in accordance with Microchip's environmental compliance program and meets RoHS Directive 2011/65/EU and JEDEC JS709C halogen-free standards. Full compliance documentation is available via Microchip's Quality & Reliability portal using the part number TC1269-2.5VUATR.
TC1269-2.5VUATR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.48V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 50dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
TC1269-2.5VUATR FAQ
1.How can I place an order for TC1269-2.5VUATR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1269-2.5VUATR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TC1269-2.5VUATR reliable?
The price and inventory of TC1269-2.5VUATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1269-2.5VUATR is usually 5 days.
3.What payment methods are accepted for TC1269-2.5VUATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1269-2.5VUATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1269-2.5VUATR?
TC1269-2.5VUATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1269-2.5VUATR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TC1269-2.5VUATR?
For technical support, including TC1269-2.5VUATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1269-2.5VUATR requirements.
6.How does Aetrix verify that TC1269-2.5VUATR is sourced from the original manufacturer or authorized distributors?
All TC1269-2.5VUATR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TC1269-2.5VUATR meets industry standards.
7.What is the process for return or replacement of TC1269-2.5VUATR?
All TC1269-2.5VUATR units undergo pre-shipment inspection (PSI). If there is an issue with TC1269-2.5VUATR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TC1269-2.5VUATR part is unused and in its original packaging.
Return procedure for TC1269-2.5VUATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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