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Microchip Technology TC1269-5.0VUATR
- Part No.:
- TC1269-5.0VUATR
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC1269-5.0VUATR.pdf
- Description:
- IC REG LINEAR 5V 300MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,972
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Product details
Overview
TC1269-5.0VUATR from Microchip Technology is a fixed-output, high-accuracy (±0.5%) CMOS low-dropout linear regulator delivering 300mA with ultra-low dropout voltage (240mV at full load), 50µA typical supply current, and integrated shutdown control - designed for battery-powered portable electronics requiring stable 5.0V rail generation.
For engineers reviewing the TC1269-5.0VUATR datasheet, TC1269-5.0VUATR pinout, TC1269-5.0VUATR application, or TC1269-5.0VUATR equivalent, key selection criteria include output accuracy over temperature (40 ppm/°C), Bypass-input-enabled noise reduction (260 nV/√Hz), thermal/overcurrent protection, and MSOP-8 footprint compatibility in space-constrained designs.
Technical Context
The TC1269-5.0VUATR implements a CMOS-based LDO architecture with precision bandgap reference and internal error amplifier, enabling stable regulation across 0–300mA load without supply current increase - unlike legacy bipolar regulators. Its shutdown input (SHDN) provides logic-level control (VIH ≥ 45% VIN, VIL ≤ 15% VIN) to reduce quiescent current to 0.05µA while forcing VOUT to zero.
Stability is achieved with only 1µF output capacitance (ESR 0.1–5.0Ω), and optional 470pF bypass capacitor on the Bypass pin reduces reference noise, lowering output noise to 260 nV/√Hz at 1kHz. Thermal shutdown activates at 150°C with hysteresis (re-enable at ~140°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±0.5% (ensures reliable 5V logic interface compliance across -40°C to +125°C) |
| Max Output Current | 300mA (supports moderate-power microcontrollers, sensors, and analog circuitry) |
| Dropout Voltage | 240mV at 300mA (enables operation from 5.24V input, critical for single-cell Li-ion or 5.5V SMPS post-regulation) |
| Supply Current | 50µA typical at full load (20–60× lower than bipolar LDOs, extending battery life) |
| Output Noise | 260 nV/√Hz at 1kHz (ultra-low noise enables clean power for ADCs, RF front-ends, and precision analog) |
| PSRR | 50dB ≤120Hz (effective rejection of low-frequency switching noise from upstream SMPS) |
| Temp Coefficient | 40 ppm/°C (tight VOUT drift supports stable timing and reference circuits over wide ambient range) |
Pinout & Package
TC1269-5.0VUATR is housed in an 8-pin MSOP package (3.0mm × 3.0mm, 0.65mm pitch), optimized for compact PCB layouts and thermal performance via lead conduction. Pin 1 is VOUT; pins 2, 3, and 6 are no-connect (NC); pin 4 is GND; pin 5 is Bypass; pin 7 is SHDN; pin 8 is VIN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output | Delivers stable 5.0V to load; requires ≥1µF ceramic or tantalum output capacitor to ground |
| NC (Pins 2, 3, 6) | No connection | Must remain unconnected; no internal bonding or function - floating per design |
| GND (Pin 4) | Ground reference | Primary return path for load and internal circuitry; connects to system ground plane for noise control |
| Bypass (Pin 5) | Reference bypass node | Accepts 470pF capacitor to ground to reduce internal reference noise and improve output spectral purity |
| SHDN (Pin 7) | Active-high enable | Logic high (≥45% VIN) enables regulation; logic low (≤15% VIN) disables output and drops supply current to 0.05µA |
| VIN (Pin 8) | Unregulated input | Accepts 2.7–6.0V input; must be decoupled with ≥1µF capacitor if >10" trace length or battery sourced |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 240mV at 300mA enables use with marginal input margins (e.g., 5.24V min for 5.0V out), preserving headroom in battery-fed systems |
| CMOS architecture | 50µA supply current independent of load ensures consistent battery runtime across operating conditions - unlike current-hungry bipolar LDOs |
| Bypass-input noise reduction | 470pF on Bypass pin cuts output noise to 260 nV/√Hz, meeting requirements for noise-sensitive analog/RF stages without external filtering |
| Integrated protection | Thermal shutdown (150°C trip) and current limiting (550–650mA short-circuit limit) prevent damage during fault conditions without external components |
| High accuracy & stability | ±0.5% initial tolerance and 40 ppm/°C tempco ensure precise 5.0V rail for ADC references, sensor excitation, and digital I/O voltage translation |
Applications
| Battery-Powered Medical Instruments | Portable Digital Cameras |
|---|---|
Use Scenario: Powering low-noise analog front-ends and image sensor bias circuits in handheld ultrasound or glucose meters. IC Role / Device Role / Timing Role: Primary 5.0V LDO supplying precision analog signal chain and microcontroller core voltage. Use Value: 260 nV/√Hz output noise and ±0.5% accuracy maintain signal integrity and measurement repeatability across battery discharge cycles. | Use Scenario: Regulating 5.0V for CCD/CMOS image sensor interfaces, flash LED drivers, and SD card controllers. IC Role / Device Role / Timing Role: Fixed-output LDO providing clean, stable 5V rail during burst-mode imaging and high-current flash charging. Use Value: 300mA capability and fast transient response support peak current demands without output droop or reset events. |
| Cellular/GSM/PHS Handsets | Linear Post-Regulator for SMPS |
Use Scenario: Supplying 5.0V to RF transceiver modules and baseband processors in legacy 2G mobile handsets. IC Role / Device Role / Timing Role: Low-quiescent LDO delivering regulated 5V from noisy battery or intermediate SMPS rail. Use Value: 50µA supply current extends standby time; 50dB PSRR suppresses switching noise from adjacent DC/DC converters. | Use Scenario: Tightening output voltage tolerance and reducing ripple/noise after a 5.5V buck converter in embedded industrial controllers. IC Role / Device Role / Timing Role: Precision post-regulator improving SMPS output accuracy and spectral purity for sensitive analog subsystems. Use Value: 240mV dropout allows operation with minimal input overhead (5.24V in), while ±0.5% accuracy replaces costly trim circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-5002E/MB | 250mA max output, 1.6µA quiescent current, same 5.0V fixed output, SOT-23-5 package | Limited to lower current loads; superior for ultra-low-power sleep modes but unsuitable for 300mA peaks | Select when <250mA load and sub-µA shutdown current are prioritized over peak current capability |
| NCP1117ST50T3G | 1A output, 8mV/mA load regulation, higher 1.2V dropout, TO-220/SOT-223 package | Higher thermal mass and larger footprint; better for high-current, high-dissipation scenarios | Select when >300mA continuous load or higher thermal margin is required, accepting larger size and higher dropout |
Compared with MCP1700T-5002E/MB, TC1269-5.0VUATR delivers 20% higher current and retains ultra-low noise performance; versus NCP1117ST50T3G, it offers 3× lower dropout and 60× lower quiescent current in a 40% smaller MSOP-8 footprint - optimizing for compact, battery-sensitive designs.
Availability
TC1269-5.0VUATR is available at Aetrix Electronics and suitable for battery-operated medical instruments, portable digital cameras, cellular handsets, and linear post-regulation applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TC1269-5.0VUATR 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.
The TC1269 product line delivers high-accuracy, low-noise CMOS LDO regulators targeting portable, battery-powered, and noise-sensitive applications where efficiency, precision, and small footprint are critical.
FAQ
What is the maximum input voltage rating for TC1269-5.0VUATR?
The absolute maximum input voltage for TC1269-5.0VUATR is 6.5V, but the recommended operating input voltage range is 2.7V to 6.0V. Exceeding 6.5V risks permanent damage. Operation within the 2.7–6.0V range ensures compliance with electrical specifications including dropout, accuracy, and thermal behavior across –40°C to +125°C junction temperature.
Does TC1269-5.0VUATR require an external capacitor on the Bypass pin?
No, the Bypass pin on TC1269-5.0VUATR is optional: connecting a 470pF capacitor improves output noise performance to 260 nV/√Hz, but leaving it unconnected still yields functional regulation. Larger capacitors increase startup time; values beyond 470pF offer diminishing returns and may delay VOUT settling during power-on.
What is the shutdown current consumption of TC1269-5.0VUATR?
TC1269-5.0VUATR draws 0.05µA typical (maximum 0.5µA) supply current in shutdown mode when the SHDN pin is held low (≤15% VIN). During shutdown, VOUT falls to zero volts, and internal circuitry is disabled - enabling ultra-low-power battery preservation in standby or sleep states.
Can TC1269-5.0VUATR operate stably with a 1µF output capacitor?
Yes, TC1269-5.0VUATR is explicitly characterized and guaranteed stable with a minimum 1µF output capacitor (ceramic or tantalum, ESR 0.1–5.0Ω). This eliminates need for larger or specialized compensation networks, simplifying layout and reducing BOM count compared to LDOs requiring ≥10µF for stability.
Is TC1269-5.0VUATR pin-compatible with other variants in the TC1269 family?
Yes, all TC1269 variants-including TC1269-2.5VUA, TC1269-3.3VUA, and TC1269-5.0VUA-share identical 8-pin MSOP packaging and pinout (VOUT, NC, NC, GND, Bypass, NC, SHDN, VIN). Only the output voltage differs; no PCB redesign is needed when substituting between fixed-voltage versions of the TC1269 family.
TC1269-5.0VUATR 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):
- 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
TC1269-5.0VUATR FAQ
1.How can I place an order for TC1269-5.0VUATR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1269-5.0VUATR 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 TC1269-5.0VUATR reliable?
The price and inventory of TC1269-5.0VUATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1269-5.0VUATR is usually 5 days.
3.What payment methods are accepted for TC1269-5.0VUATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1269-5.0VUATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1269-5.0VUATR?
TC1269-5.0VUATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1269-5.0VUATR 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 TC1269-5.0VUATR?
For technical support, including TC1269-5.0VUATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1269-5.0VUATR requirements.
6.How does Aetrix verify that TC1269-5.0VUATR is sourced from the original manufacturer or authorized distributors?
All TC1269-5.0VUATR 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 TC1269-5.0VUATR meets industry standards.
7.What is the process for return or replacement of TC1269-5.0VUATR?
All TC1269-5.0VUATR units undergo pre-shipment inspection (PSI). If there is an issue with TC1269-5.0VUATR, 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 TC1269-5.0VUATR part is unused and in its original packaging.
Return procedure for TC1269-5.0VUATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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