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Microchip Technology TC1269-5.0VUA
- Part No.:
- TC1269-5.0VUA
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC1269-5.0VUA.pdf
- Description:
- IC REG LINEAR 5V 300MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,817
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Product details
Overview
TC1269-5.0VUA from Microchip Technology is a fixed-output 5.0V 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 thermal/overcurrent protection - designed for battery-powered portable electronics requiring stable, quiet power.
For engineers reviewing the TC1269-5.0VUA datasheet, TC1269-5.0VUA pinout, TC1269-5.0VUA application, or TC1269-5.0VUA equivalent, key selection criteria include dropout voltage (240mV at 300mA), shutdown quiescent current (0.05µA), PSRR (50dB @ ≤120Hz), output noise (260nV/√Hz), and MSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The TC1269-5.0VUA implements a CMOS-based LDO architecture that maintains output regulation across 0–300mA load range without increasing supply current - unlike legacy bipolar regulators. Its internal reference is decoupled via a dedicated Bypass pin, enabling optional 470pF capacitor to reduce output noise by suppressing reference ripple.
Shutdown functionality is TTL/CMOS-compatible: SHDN ≥45% VIN enables regulation; ≤15% VIN forces shutdown with VOUT = 0V and ISS2 = 0.05µA. Thermal shutdown activates at 150°C junction temperature, with automatic recovery at ~140°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±0.5% (±25mV) - ensures precise biasing for 5V logic, ADC references, and analog circuitry |
| Max Output Current | 300mA - supports moderate-power microcontrollers, sensors, and RF modules |
| Dropout Voltage | 240mV at 300mA - enables operation from 5.24V input, critical for single-cell Li-ion or 5V SMPS post-regulation |
| Supply Current | 50µA typical at full load - extends battery life in always-on portable systems |
| Shutdown Current | 0.05µA typical - reduces standby power to negligible levels in sleep-mode applications |
| PSRR | 50dB @ ≤120Hz - suppresses low-frequency ripple from switching converters feeding the LDO input |
| Output Noise | 260nV/√Hz @ 1kHz - meets low-noise requirements for precision analog front-ends and audio circuits |
Pinout & Package
TC1269-5.0VUA is housed in an 8-pin MSOP package (3.0mm × 3.0mm, 0.65mm pitch), optimized for high-density PCB layouts. Thermal performance is enhanced by ground-plane-connected leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output | Delivers stable 5.0V to load; requires ≥1µF ceramic output capacitor for stability |
| NC (Pin 2) | No connect | Internally unconnected - must remain floating or grounded per layout best practice |
| NC (Pin 3) | No connect | Internally unconnected - no electrical function; avoid routing signals nearby |
| GND (Pin 4) | Ground reference | Primary return path for load current and internal circuitry; tie directly to system ground plane |
| Bypass (Pin 5) | Reference decoupling | Accepts 470pF capacitor to ground to reduce internal reference noise and improve output spectral purity |
| NC (Pin 6) | No connect | Internally unconnected - leave unpopulated; no routing required |
| SHDN (Pin 7) | Enable/disable control | Active-high logic input; drives regulator into zero-output shutdown when pulled ≤15% VIN |
| VIN (Pin 8) | Unregulated input | Accepts 2.7–6.0V input; requires local 1µF bypass capacitor if >10" trace length or battery source |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ground current | 50µA typical at 300mA load - 20–60× lower than bipolar LDOs, directly extending battery runtime |
| Low-noise operation | 260nV/√Hz output noise with optional 470pF Bypass capacitor - suitable for RF receivers and precision ADCs |
| Fast load transient response | Maintains regulation during rapid load steps (0→300mA) without external compensation - simplifies design |
| Thermal + overcurrent protection | Auto-shutdown at 150°C junction temp and current limit ~600mA - prevents damage under fault conditions |
| Stable with minimal capacitance | Works with only 1µF output capacitor (ESR 0.1–5.0Ω) - reduces BOM cost and board area vs. traditional LDOs |
Applications
| Battery-Powered Medical Devices | Portable Digital Cameras |
|---|---|
Use Scenario: Powering low-power ECG front-end amplifiers and ADCs in handheld diagnostic tools operating from coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Primary 5.0V LDO delivering clean, regulated supply to analog signal chain components with minimal self-heating. Use Value: ±0.5% output accuracy ensures consistent ADC reference scaling; 260nV/√Hz noise avoids signal-to-noise degradation in µV-level biopotential measurements. | Use Scenario: Supplying image sensor, ISP, and flash controller in compact digital cameras where battery life and thermal headroom are constrained. IC Role / Device Role / Timing Role: Post-regulator for SMPS-derived 5.5V rail, providing low-noise 5.0V for noise-sensitive imaging subsystems. Use Value: 240mV dropout enables >95% efficiency at end-of-battery discharge; 0.05µA shutdown current eliminates drain during storage mode. |
| GSM/PHS Cellular Handsets | Industrial Portable Test Equipment |
Use Scenario: Providing stable 5.0V to baseband processors and RF transceivers in legacy GSM/PHS handsets with tight thermal envelopes. IC Role / Device Role / Timing Role: Main system LDO with active shutdown coordination via baseband GPIO to manage power states. Use Value: TTL/CMOS-compatible SHDN pin allows direct interface to processor I/O without level-shifting; 50µA quiescent current minimizes standby loss. | Use Scenario: Powering microcontroller, display driver, and isolated communication interfaces (e.g., RS-232/485) in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Single-point 5.0V regulator supporting mixed-signal loads with varying current demands and intermittent operation. Use Value: Load regulation of 0.5% (0.1–300mA) ensures consistent logic levels across measurement cycles; MSOP-8 footprint saves space on crowded test instrument PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-5002E/TO | Same manufacturer, SOT-23-5 package; 250mA max output; 6µA quiescent current; no Bypass pin | Limited to lower-current loads; lacks noise-reduction capability for precision analog use | Preferred for ultra-low-IQ designs where 250mA suffices and board space favors SOT-23 |
| TCS2105-5.0VDBVR | TI part, SOT-23-5; 300mA output; 55µA IQ; no shutdown or Bypass; ±2% accuracy | Higher output tolerance reduces suitability for ADC references; no enable control limits power sequencing | Lower-cost option for non-critical 5V rails where shutdown and noise performance are not required |
Compared with MCP1700-5002E/TO and TCS2105-5.0VDBVR, TC1269-5.0VUA uniquely combines 300mA drive, ±0.5% accuracy, integrated shutdown, and Bypass-enabled ultra-low noise - making it optimal for battery-powered precision analog systems where all four attributes are concurrently needed.
Availability
TC1269-5.0VUA is available at Aetrix Electronics and suitable for battery-operated medical instruments, portable digital cameras, and industrial handheld test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for TC1269-5.0VUA 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.
The TC1269 product line delivers high-accuracy, low-quiescent-current CMOS LDO regulators targeting portable, battery-sensitive applications where efficiency, noise, and reliability are critical.
FAQ
What is the maximum input voltage rating for TC1269-5.0VUA?
The absolute maximum input voltage for TC1269-5.0VUA is 6.5V, but the recommended operating range is up to 6.0V per Electrical Characteristics. Exceeding 6.0V risks violating safe operating area limits, especially under high load or elevated temperature. The device incorporates internal protection, but sustained operation above 6.0V may impact long-term reliability. Always refer to the TC1269-5.0VUA datasheet Section 1.0 for derating guidance.
Does TC1269-5.0VUA require an external capacitor on the Bypass pin?
No, the Bypass pin on TC1269-5.0VUA is optional: connecting a 470pF capacitor improves output noise performance to 260nV/√Hz, but leaving it unconnected still yields functional regulation. If noise sensitivity is low (e.g., digital-only loads), the Bypass pin may be left floating. Larger capacitors increase startup time and are not recommended unless validated per Section 3.1 of the TC1269-5.0VUA datasheet.
Can TC1269-5.0VUA be used with ceramic output capacitors?
Yes, TC1269-5.0VUA is stable with ceramic output capacitors ≥1µF, provided effective series resistance (ESR) is between 0.1Ω and 5.0Ω and resonant frequency exceeds 1MHz. X5R/X7R dielectrics are preferred for temperature stability. Avoid low-ESR ceramics below 0.1Ω unless verified, as they may induce instability per Section 3.2 of the TC1269-5.0VUA datasheet.
What happens to VOUT during TC1269-5.0VUA shutdown?
When TC1269-5.0VUA enters shutdown (SHDN ≤15% VIN), VOUT actively discharges to 0V through an internal path - it does not float or retain residual voltage. This behavior ensures downstream circuitry is fully powered down, preventing unintended leakage paths or logic glitches. Shutdown supply current drops to 0.05µA typical, as confirmed in the TC1269-5.0VUA Electrical Specifications table.
Is TC1269-5.0VUA compatible with lead-free reflow soldering profiles?
Yes, TC1269-5.0VUA in MSOP-8 packaging is rated for standard lead-free reflow profiles (J-STD-020), with peak temperature up to 260°C. The device's moisture sensitivity level (MSL) is not specified in DS21380C, but Microchip's general MSOP packaging complies with MSL-1. For production, consult Microchip's latest packaging specification and perform board-level validation per your assembly process.
TC1269-5.0VUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 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
TC1269-5.0VUA FAQ
1.How can I place an order for TC1269-5.0VUA through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1269-5.0VUA 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 TC1269-5.0VUA reliable?
The price and inventory of TC1269-5.0VUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1269-5.0VUA is usually 5 days.
3.What payment methods are accepted for TC1269-5.0VUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1269-5.0VUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1269-5.0VUA?
TC1269-5.0VUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1269-5.0VUA 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 TC1269-5.0VUA?
For technical support, including TC1269-5.0VUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1269-5.0VUA requirements.
6.How does Aetrix verify that TC1269-5.0VUA is sourced from the original manufacturer or authorized distributors?
All TC1269-5.0VUA 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 TC1269-5.0VUA meets industry standards.
7.What is the process for return or replacement of TC1269-5.0VUA?
All TC1269-5.0VUA units undergo pre-shipment inspection (PSI). If there is an issue with TC1269-5.0VUA, 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 TC1269-5.0VUA part is unused and in its original packaging.
Return procedure for TC1269-5.0VUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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