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Microchip Technology TC1107-2.8VOA
- Part No.:
- TC1107-2.8VOA
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TC1107-2.8VOA.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,541
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Product details
Overview
TC1107-2.8VOA from Microchip Technology is a fixed-output, CMOS low-dropout (LDO) voltage regulator delivering 2.8V at up to 300mA with ±0.5% output accuracy, 240mV typical dropout at full load, and 50μA typical quiescent current. It integrates shutdown control, bypass input for ultra-low-noise operation, and thermal/overcurrent protection-designed for battery-powered medical instruments and portable communications devices.
For engineers reviewing the TC1107-2.8VOA datasheet, TC1107-2.8VOA pinout, TC1107-2.8VOA application, or TC1107-2.8VOA equivalent, key selection criteria include its 2.8V fixed output, MSOP-8 or SOIC-8 package options, 0.05μA shutdown current, 1μF minimum output capacitance requirement, and compatibility with battery-backed RTC and CMOS RAM systems requiring stable low-power regulation.
Technical Context
The TC1107-2.8VOA employs a CMOS pass element enabling supply current independent of load-unlike legacy bipolar LDOs-ensuring stable 2.8V output across 0–300mA while maintaining 50μA typical quiescent draw. Its internal reference bypass (pin 4) supports optional 470pF capacitor connection to reduce output noise to 260nV/√Hz at 1kHz.
Shutdown is asserted via logic-level SHDN input (pin 5), reducing supply current to 0.05μA and forcing VOUT to 0V; thermal shutdown activates at 150°C with hysteresis to ~140°C. Stability is guaranteed with only 1μF ceramic or tantalum output capacitance (ESR 0.1–5.0Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±0.5% (±14mV) at 25°C; ensures precision biasing for low-voltage microcontrollers and sensors. |
| Max Output Current | 300mA continuous; supports moderate-power peripherals like LCD drivers or RF front-end ICs in portable systems. |
| Dropout Voltage | 270mV max at 300mA load; enables regulation from 3.07V input, critical for single-cell Li-ion or alkaline battery operation. |
| Quiescent Current | 50μA typical at full load; 20–60× lower than bipolar LDOs, extending battery life in always-on monitoring circuits. |
| Shutdown Current | 0.05μA typical; reduces system standby power to nanoampere levels when host MCU disables SHDN pin. |
| PSRR | 60dB at ≤1kHz; suppresses ripple from upstream SMPS stages in hybrid power architectures. |
| Noise Density | 260nV/√Hz at 1kHz (with 1μF COUT); meets low-noise requirements for analog signal chains and ADC references. |
Pinout & Package
TC1107-2.8VOA is supplied in an 8-pin MSOP package (3.0mm × 3.0mm × 1.1mm body height), pin-compatible with the SOIC-8 variant but offering higher thermal resistance (θJA ≈ 200°C/W). The MSOP variant uses standard tape-and-reel packaging (2500 units per 13-inch reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.8V output; requires ≥1μF capacitor to GND for stability and transient response. |
| 2 | GND | Analog/digital ground reference; must be connected to low-impedance PCB ground plane. |
| 3 | NC | No internal connection; left unconnected on PCB. |
| 4 | Bypass | Reference bypass node; 470pF capacitor to GND reduces output noise by filtering internal bandgap reference. |
| 5 | SHDN | Active-high shutdown control; VIH ≥ 45% VIN enables regulator; VIL ≤ 15% VIN disables it with 0.05μA current draw. |
| 6 | NC | No internal connection; left unconnected on PCB. |
| 7 | NC | No internal connection; left unconnected on PCB. |
| 8 | VIN | Unregulated input (2.7–6.0V); must be decoupled with ≥1μF capacitor if sourced from battery or long traces. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 50μA typical at full 300mA load-enables >1-year battery life in coin-cell–powered IoT sensors. |
| Low-noise Bypass input | 470pF capacitor on pin 4 reduces output noise to 260nV/√Hz, supporting high-resolution ADCs and RF synthesizers. |
| Fast load transient response | Maintains regulation during 100mA step loads without external compensation-ideal for burst-mode wireless transceivers. |
| Integrated protection | Thermal shutdown (150°C trip) and current limiting (550–650mA short-circuit limit) prevent damage under fault conditions. |
| Minimal external components | Stable with only one 1μF output capacitor-reduces BOM count and PCB area vs. legacy LDOs requiring multiple caps. |
Applications
| Medical Portable Monitor | Cellular/GSM Handset Baseband |
|---|---|
Use Scenario: Powering analog front-end (AFE) and low-power MCU in handheld ECG or pulse oximeter units operating from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 2.8V LDO supplying sensor signal chain and real-time clock (RTC) backup domain. Use Value: 50μA quiescent current extends battery runtime between charges; ±0.5% accuracy ensures consistent ADC reference scaling across temperature. |
Use Scenario: Regulating 2.8V rail for GSM baseband processor core and audio codec in dual-SIM mobile handsets. IC Role / Device Role / Timing Role: Post-regulator after main PMIC buck converter, providing clean, low-noise supply for sensitive RF/analog blocks. Use Value: 60dB PSRR at 1kHz attenuates switching noise from upstream SMPS; 240mV dropout allows operation down to 3.04V input as battery discharges. |
| Linear Post-Regulator for SMPS | Portable Computer Subsystem |
Use Scenario: Clean 2.8V supply for FPGA configuration memory or high-speed SerDes PHY in industrial edge gateway powered by 5V SMPS. IC Role / Device Role / Timing Role: Low-noise linear post-regulator eliminating SMPS ripple that would degrade signal integrity. Use Value: Bypass pin (4) + 470pF cuts output noise to 260nV/√Hz-critical for jitter-sensitive clock distribution networks. |
Use Scenario: Powering embedded controller (EC) and keyboard backlight driver in ultrabook lid assembly with tight thermal constraints. IC Role / Device Role / Timing Role: Secondary LDO activated only during lid-open state via SHDN pin controlled by hinge sensor. Use Value: 0.05μA shutdown current eliminates leakage path when lid closed; MSOP-8 footprint saves space in narrow hinge region. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2802E/TO | Same 2.8V output, but SOT-23-5 package; 1.6μA quiescent current (lower), 250mA max output (lower), no Bypass pin. | Lacks ultra-low-noise Bypass capability; suited for simpler, lower-current subsystems where noise is not critical. | Select MCP1700-2802E/TO for cost-sensitive, space-constrained designs needing <2μA IQ but tolerating reduced noise performance and current capability. |
| TCS2107-2.8V | Pin-compatible MSOP-8; same 300mA rating and 50μA IQ, but ±1.0% output tolerance (vs. ±0.5%) and no thermal shutdown. | Missing overtemperature protection limits use in thermally aggressive enclosures or high-ambient environments. | Choose TCS2107-2.8V only in thermally managed, low-risk applications where tighter output accuracy is not required and thermal margin is assured. |
Compared with MCP1700-2802E/TO and TCS2107-2.8V, TC1107-2.8VOA uniquely combines ±0.5% accuracy, integrated thermal shutdown, and Bypass-enabled ultra-low noise-making it the only option among the three qualified for battery-backed RTC, medical AFE, and GSM RF subsystems demanding simultaneous precision, safety, and spectral purity.
Availability
TC1107-2.8VOA is available at Aetrix Electronics and suitable for battery-operated medical instruments, cellular/GSM handset baseband subsystems, and portable computer embedded controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TC1107-2.8VOA 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-certified wafer fabrication and design facilities.
The TC1107 product line was engineered as a CMOS-based upgrade to legacy bipolar LDOs-targeting portable, battery-sensitive applications where ultra-low quiescent current, high accuracy, and robust protection are mandatory.
FAQ
What is the minimum input voltage required for TC1107-2.8VOA to maintain regulation?
The TC1107-2.8VOA requires VIN ≥ 2.7V or VIN ≥ (2.8V + dropout voltage), whichever is greater. At 300mA load, max dropout is 270mV, so minimum functional VIN is 3.07V. Below this, output voltage drops out of specification. This constraint ensures reliable operation from partially discharged single-cell Li-ion batteries.
Can TC1107-2.8VOA operate without the Bypass capacitor connected?
Yes, TC1107-2.8VOA functions normally without the 470pF capacitor on the Bypass pin (pin 4). Omitting it increases output noise to ~260nV/√Hz baseline; adding the capacitor reduces noise further. The device remains stable and within all specifications-Bypass is optional for ultra-low-noise applications only.
Does TC1107-2.8VOA require an input capacitor?
TC1107-2.8VOA does not mandate an input capacitor for stability, but Microchip recommends ≥1μF VIN-to-GND capacitance when powered from batteries or when >10 inches of wire separates the regulator from the source filter capacitor. This improves transient response and reduces input ripple coupling into the output.
What happens to the output voltage of TC1107-2.8VOA during shutdown?
When the SHDN pin (pin 5) is driven low (≤15% VIN), TC1107-2.8VOA enters shutdown mode: output voltage falls to 0V, and supply current drops to 0.05μA typical. This fully isolates the 2.8V rail, preventing backfeed and minimizing system standby power-critical for battery longevity in always-on monitoring devices.
Is TC1107-2.8VOA compatible with ceramic output capacitors?
Yes, TC1107-2.8VOA 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 range. Avoid ultra-low-ESR types (<0.1Ω) unless verified with Microchip's application notes, as they may induce instability.
TC1107-2.8VOA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.8V
- 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-SOIC
TC1107-2.8VOA FAQ
1.How can I place an order for TC1107-2.8VOA through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1107-2.8VOA 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 TC1107-2.8VOA reliable?
The price and inventory of TC1107-2.8VOA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1107-2.8VOA is usually 5 days.
3.What payment methods are accepted for TC1107-2.8VOA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1107-2.8VOA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1107-2.8VOA?
TC1107-2.8VOA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1107-2.8VOA 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 TC1107-2.8VOA?
For technical support, including TC1107-2.8VOA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1107-2.8VOA requirements.
6.How does Aetrix verify that TC1107-2.8VOA is sourced from the original manufacturer or authorized distributors?
All TC1107-2.8VOA 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 TC1107-2.8VOA meets industry standards.
7.What is the process for return or replacement of TC1107-2.8VOA?
All TC1107-2.8VOA units undergo pre-shipment inspection (PSI). If there is an issue with TC1107-2.8VOA, 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 TC1107-2.8VOA part is unused and in its original packaging.
Return procedure for TC1107-2.8VOA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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