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Microchip Technology TC1107-3.3VUATR
- Part No.:
- TC1107-3.3VUATR
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC1107-3.3VUATR.pdf
- Description:
- IC REG LINEAR 3.3V 300MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
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Product details
Overview
TC1107-3.3VUATR from Microchip Technology is a fixed-output, 3.3V CMOS low-dropout (LDO) linear regulator in an 8-pin MSOP package, delivering 300mA output current with ±0.5% output voltage accuracy, 240mV typical dropout at full load, and 50μA typical quiescent current - optimized for battery-powered medical instruments and portable communication devices.
For engineers reviewing the TC1107-3.3VUATR datasheet, TC1107-3.3VUATR pinout, TC1107-3.3VUATR application, or TC1107-3.3VUATR equivalent, key selection criteria include ultra-low noise operation (260nV/√Hz), shutdown current of 0.05μA, Bypass input for reference filtering, and thermal/overcurrent protection - all validated for -40°C to +125°C operation.
Technical Context
The TC1107-3.3VUATR uses a CMOS pass element architecture enabling supply current independent of load (50μA typ. across 0–300mA), unlike legacy bipolar LDOs. Its internal reference is bypassable via a dedicated pin, reducing output noise by filtering reference voltage fluctuations.
It integrates active overtemperature shutdown (trip at ~150°C, resume at ~140°C) and foldback overcurrent protection. Stability is guaranteed with only 1μF output capacitance (ESR 0.1–5.0Ω), eliminating need for large ceramic or tantalum arrays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±0.5% (±16.5mV) - ensures stable logic supply for 3.3V microcontrollers and sensors. |
| Max Output Current | 300mA - supports moderate-power peripherals like RF transceivers or display drivers without external boosting. |
| Dropout Voltage | 270mV max at 300mA - enables regulation from 3.57V input, critical for single-cell Li-ion or 2-cell alkaline systems. |
| Quiescent Current | 50μA typ. at full load - 20–60× lower than bipolar LDOs, extending battery life in always-on monitoring circuits. |
| Shutdown Current | 0.05μA typ. - reduces standby power to negligible levels in sleep-mode portable equipment. |
| Output Noise | 260nV/√Hz at 1kHz - low enough for precision analog front-ends (e.g., ADC references, sensor signal chains). |
| PSRR | 60dB at ≤1kHz - suppresses ripple from upstream switching regulators used as primary power sources. |
Pinout & Package
TC1107-3.3VUATR is housed in an 8-pin MSOP package (3.0mm × 3.0mm × 1.1mm height), optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 3.3V output - connects directly to load; requires ≥1μF ceramic capacitor to GND for stability. |
| 2 | GND | Power ground reference - must be low-impedance connection to minimize noise coupling and thermal resistance. |
| 3 | NC | No connect - internally unconnected; no external connection permitted. |
| 4 | Bypass | Reference bypass input - adding 470pF to GND reduces output noise by filtering internal bandgap reference. |
| 5 | SHDN | Active-high shutdown control - logic high (>45% VIN) enables regulator; logic low (<15% VIN) disables output and cuts supply current to 0.05μA. |
| 6 | NC | No connect - internally unconnected; no external connection permitted. |
| 7 | NC | No connect - internally unconnected; no external connection permitted. |
| 8 | VIN | Unregulated input - accepts 2.7V to 6.0V; must be decoupled with ≥1μF capacitor if sourced from battery or long traces. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise with Bypass input | 260nV/√Hz output noise reduced further via optional 470pF capacitor on Bypass pin - preserves SNR in sensitive analog signal paths. |
| CMOS architecture | 50μA supply current constant across 0–300mA load - eliminates load-dependent quiescent power penalty seen in bipolar LDOs. |
| Thermal & overcurrent protection | Auto-shutdown at ~150°C junction temperature and foldback current limiting - prevents damage during fault conditions without external circuitry. |
| Low-dropout operation | 270mV max dropout at 300mA - enables use with marginal input margins (e.g., 3.57V min input for 3.3V output), improving system efficiency. |
| Wide input voltage range | 2.7V to 6.0V operation - compatible with single Li-ion (3.0–4.2V), dual alkaline (2.4–3.2V), or post-regulated SMPS outputs. |
Applications
| Portable Medical Sensors | Cellular/GSM Handsets |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) with Bluetooth LE radio and analog front-end. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying MCU, BLE SoC, and precision ADC reference. Use Value: 50μA quiescent current extends battery life beyond 7 days; 260nV/√Hz noise avoids corruption of μV-level sensor signals. |
Use Scenario: Dual-SIM GSM phone requiring separate low-noise supplies for RF transceiver and baseband processor. IC Role / Device Role / Timing Role: Post-regulator for clean 3.3V rail derived from buck converter, with SHDN controlled by PMIC. Use Value: 60dB PSRR at 1kHz attenuates switching noise from upstream DC/DC; 0.05μA shutdown current minimizes leakage during deep sleep. |
| Battery-Powered Instrumentation | Linear Post-Regulator for SMPS |
|
Use Scenario: Handheld multimeter with auto-ranging analog circuitry and LCD driver. IC Role / Device Role / Timing Role: Precision 3.3V source for op-amp rails and reference buffers, isolated from noisy digital sections. Use Value: ±0.5% output accuracy ensures measurement repeatability; Bypass pin allows 470pF filter to eliminate reference drift under RF interference. |
Use Scenario: Industrial PLC I/O module using 5V buck converter followed by local 3.3V regulation per channel. IC Role / Device Role / Timing Role: Final-stage LDO providing low-noise, tightly regulated 3.3V for isolated ADCs and digital isolators. Use Value: Stable 1μF output capacitor requirement simplifies layout; 240mV typical dropout maintains regulation even with aging input capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | Same 3.3V output, but SOT-23-5 package; 2.5μA IQ (lower), 250mA max output (lower), no Bypass pin. | Lacks Bypass input and thermal shutdown; suited for ultra-low-power, non-critical loads where noise is secondary. | Select when board space is tighter and noise sensitivity is minimal - not drop-in due to pin count and missing protection features. |
| TPS76333QDBVRQ1 | Automotive-grade (AEC-Q100); 300mA output; 80μA IQ; includes enable and power-good, but no Bypass pin. | Rated for -40°C to +125°C with automotive qualification; higher IQ and no noise-reduction path limits use in precision analog systems. | Choose for automotive infotainment or telematics where qualification matters more than ultra-low noise - different pinout and no Bypass capability. |
Compared with MCP1700-3302E/TO and TPS76333QDBVRQ1, TC1107-3.3VUATR uniquely combines 300mA output, 50μA IQ, integrated thermal/overcurrent protection, and Bypass-enabled ultra-low noise - making it the only option among the three qualified for battery-powered medical sensors requiring both precision and safety.
Availability
TC1107-3.3VUATR is available at Aetrix Electronics and suitable for portable medical instruments, cellular handsets, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TC1107-3.3VUATR 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 manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 and ISO 9001 certifications across design and wafer fabrication facilities.
The TC1107 product line delivers high-accuracy, low-quiescent-current CMOS LDOs targeting battery-operated and noise-sensitive applications - designed to replace legacy bipolar regulators while reducing system power and improving reliability.
FAQ
What is the minimum input voltage required for TC1107-3.3VUATR to maintain regulation?
The TC1107-3.3VUATR requires a minimum input voltage of 2.7V, but to sustain 3.3V output at full 300mA load, VIN must exceed VOUT + dropout - i.e., ≥3.57V (3.3V + 270mV max dropout). Below this margin, output voltage drops out of specification. The device will not regulate correctly if VIN falls below the dropout threshold under load.
Does TC1107-3.3VUATR require an external capacitor on the Bypass pin?
No - the Bypass pin on TC1107-3.3VUATR is optional. Connecting a 470pF capacitor to GND reduces output noise by filtering the internal reference; omitting it results in 260nV/√Hz baseline noise. Larger values increase startup time but do not harm functionality. Leaving the pin open is fully supported for non-noise-critical applications.
Can TC1107-3.3VUATR be used with ceramic output capacitors?
Yes - TC1107-3.3VUATR is stable with ceramic output capacitors ≥1μF, provided their effective series resistance (ESR) is between 0.1Ω and 5.0Ω. Standard X5R/X7R ceramics meet this requirement. Avoid ultra-low-ESR types (e.g., specialty polymer or <0.1Ω ceramics) unless verified per Microchip's application notes, as they may induce instability.
What happens to the output voltage of TC1107-3.3VUATR during shutdown?
When the SHDN pin of TC1107-3.3VUATR is pulled low (<15% VIN), the regulator disables completely: VOUT falls to 0V, and supply current drops to 0.05μA typical. This hard-zero output prevents backfeeding or leakage into downstream circuitry - essential for safe power sequencing in multi-rail systems.
Is TC1107-3.3VUATR RoHS compliant and lead-free?
Yes - TC1107-3.3VUATR is manufactured in accordance with Microchip's RoHS-compliant processes and carries lead-free (Pb-free) packaging. The MSOP package uses matte tin (Sn) lead finish, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 - suitable for standard reflow profiles without special handling.
TC1107-3.3VUATR 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.48V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- 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
TC1107-3.3VUATR FAQ
1.How can I place an order for TC1107-3.3VUATR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1107-3.3VUATR 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 TC1107-3.3VUATR reliable?
The price and inventory of TC1107-3.3VUATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1107-3.3VUATR is usually 5 days.
3.What payment methods are accepted for TC1107-3.3VUATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1107-3.3VUATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1107-3.3VUATR?
TC1107-3.3VUATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1107-3.3VUATR 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 TC1107-3.3VUATR?
For technical support, including TC1107-3.3VUATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1107-3.3VUATR requirements.
6.How does Aetrix verify that TC1107-3.3VUATR is sourced from the original manufacturer or authorized distributors?
All TC1107-3.3VUATR 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 TC1107-3.3VUATR meets industry standards.
7.What is the process for return or replacement of TC1107-3.3VUATR?
All TC1107-3.3VUATR units undergo pre-shipment inspection (PSI). If there is an issue with TC1107-3.3VUATR, 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 TC1107-3.3VUATR part is unused and in its original packaging.
Return procedure for TC1107-3.3VUATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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