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Microchip Technology TC2186-2.85VCTTR
- Part No.:
- TC2186-2.85VCTTR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TC2186-2.85VCTTR.pdf
- Description:
- IC REG LIN 2.85V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,535
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Product details
Overview
TC2186-2.85VCTTR from Microchip Technology is a 150 mA, fixed-output CMOS low-dropout (LDO) voltage regulator in a 5-pin SOT-23A package, delivering ±0.4% output accuracy, 140 mV typical dropout at full load, and 55 µA quiescent current - optimized for battery-powered medical instruments and portable communication devices.
For engineers reviewing the TC2186-2.85VCTTR datasheet, TC2186-2.85VCTTR pinout, TC2186-2.85VCTTR application, or TC2186-2.85VCTTR equivalent, key selection criteria include its ERROR flag functionality for low-battery detection, shutdown current of 0.5 µA max, thermal/overcurrent protection, and compatibility with 1 µF ceramic output capacitors.
Technical Context
The TC2186-2.85VCTTR implements a CMOS-based LDO architecture with integrated error amplifier, reference, and pass transistor - enabling stable regulation across 0–150 mA load without supply current increase. Its open-drain ERROR output asserts low when VOUT drops >5% below 2.85 V, with 50 mV hysteresis and 2 ms delay from VOUT excursion.
Designed as a pin-compatible upgrade to bipolar LDOs, it operates from 2.7 V to 6.0 V input, supports shutdown control via TTL/CMOS-compatible SHDN input (VIH ≥ 60% VIN), and remains stable with low-ESR ceramic capacitors ≥1 µF - eliminating need for external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V ±0.4% (±11.4 mV) - ensures precise biasing for 2.8 V–3.0 V logic rails and analog sensors. |
| Max Output Current | 150 mA - supports moderate-power microcontrollers, RF front-ends, and sensor signal chains without thermal derating under typical PCB layout. |
| Dropout Voltage | 140 mV typical at 150 mA - enables operation down to VIN = 2.99 V while maintaining regulation, critical for single-cell Li-ion or alkaline systems. |
| Quiescent Current | 55 µA typical at full load - extends battery life >20× vs. legacy bipolar regulators in always-on monitoring applications. |
| Shutdown Current | 0.5 µA maximum - reduces system standby power to nanoampere levels when SHDN is pulled low. |
| PSRR | 50 dB at ≤100 kHz - suppresses switching noise from DC-DC converters feeding the LDO input, preserving ADC/SERDES signal integrity. |
| Operating Temp | −40°C to +125°C junction - qualified for industrial and automotive cabin-edge environments without derating. |
Pinout & Package
TC2186-2.85VCTTR is housed in a 5-pin SOT-23A (EIAJ SC-74A) surface-mount package with 220°C/W junction-to-air thermal resistance on standard 2-layer FR4 board. Pin 1 is marked with a dot; device orientation follows EIAJ tape-and-reel standard (marking right-side up, feed direction per datasheet Figure 6-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated input supply | Accepts 2.7–6.0 V input; requires ≥1 µF ceramic decoupling to GND near pin for stability and transient response. |
| GND (Pin 2) | Ground reference | Common return for input/output capacitors and load; must connect to low-impedance ground plane to minimize noise coupling. |
| SHDN (Pin 3) | Active-high enable control | Drives regulator ON when ≥60% VIN; pulls VOUT and ERROR to zero when ≤15% VIN - compatible with MCU GPIO or logic gates. |
| ERROR (Pin 4) | Open-drain out-of-regulation flag | Sinks current when VOUT < 2.708 V (−5% of 2.85 V); used directly as battery-low indicator or reset generator with RC timing network. |
| VOUT (Pin 5) | Regulated output | Delivers stable 2.85 V to load; requires ≥1 µF ceramic capacitor placed adjacent to pin to ensure loop stability and PSRR performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 600 nV/√Hz output noise at 10 kHz - preserves SNR in precision analog front-ends and audio codecs. |
| Fast shutdown wake-up | 60 µs typical VOUT rise time from shutdown - enables rapid system recovery in duty-cycled sensor nodes. |
| Thermal protection | 160°C die thermal shutdown with 10°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Load regulation | ±0.43% over 0.1–150 mA load range - maintains voltage accuracy across dynamic current profiles without external feedback. |
| Line regulation | 0.05% typical change per volt input variation - rejects ripple from upstream converters or aging batteries. |
Applications
| Portable Medical Sensors | Cellular Handset Baseband |
|---|---|
|
Use Scenario: Continuous glucose monitor with Bluetooth LE radio and ultra-low-power MCU. IC Role / Device Role / Timing Role: Primary 2.85 V supply for analog sensor front-end and BLE SoC I/O domain. Use Value: 55 µA quiescent current extends coin-cell life beyond 12 months; ERROR flag triggers firmware alert before battery cutoff. |
Use Scenario: Dual-SIM GSM/PHS handset requiring independent low-noise power for RF transceivers. IC Role / Device Role / Timing Role: Dedicated LDO for 2.85 V RF IC bias, isolated from noisy digital supply rails. Use Value: 50 dB PSRR at 100 kHz attenuates DC-DC switching noise; 140 mV dropout enables operation until battery reaches 2.99 V. |
| Industrial Data Loggers | Wearable Health Trackers |
|
Use Scenario: Battery-powered environmental logger with temperature/humidity/pressure sensors and LoRaWAN module. IC Role / Device Role / Timing Role: Main system regulator powering MCU, sensors, and sub-GHz transceiver during active transmission bursts. Use Value: 150 mA output sustains 120 mA peak LoRa transmit current; thermal shutdown prevents failure during extended outdoor operation. |
Use Scenario: Fitness band with optical heart-rate sensor, accelerometer, and OLED display. IC Role / Device Role / Timing Role: Single-supply source for 2.85 V analog sensor chain and display driver interface. Use Value: ±0.4% output accuracy ensures consistent photodiode bias and ADC reference; SOT-23A footprint minimizes PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-285T50 | 50 mA max output, 1.6 µA quiescent current, no ERROR output, same SOT-23-5 package. | Limited to ultra-low-power sensor nodes; unsuitable for loads >50 mA or where fault signaling is required. | Select when lowest possible quiescent current dominates and load current stays below 50 mA. |
| TPS7A05285PDBVR | 200 mA output, 25 µA quiescent current, integrated thermal foldback, 5-pin SOT-23 package. | Better thermal robustness and higher current capability; lacks dedicated ERROR pin - requires external comparator for fault detection. | Select when higher output current or enhanced thermal management is needed, and ERROR functionality can be implemented externally. |
Compared with MCP1700-285T50 and TPS7A05285PDBVR, TC2186-2.85VCTTR uniquely balances 150 mA drive, integrated ERROR flag, and 55 µA quiescent current - making it optimal for mid-power battery systems requiring autonomous fault reporting without added components.
Availability
TC2186-2.85VCTTR is available at Aetrix Electronics and suitable for portable medical instruments, cellular handsets, industrial data loggers, and wearable health trackers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TC2186-2.85VCTTR 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 is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949:2002 certification across wafer fabrication and design facilities.
The TC2054/2055/2186 family was designed as high-accuracy, low-quiescent-current CMOS LDO upgrades to legacy bipolar regulators - targeting battery-operated systems where runtime, thermal safety, and compact packaging are critical.
FAQ
What is the minimum input voltage required for TC2186-2.85VCTTR to maintain regulation?
The TC2186-2.85VCTTR requires VIN ≥ 2.99 V (2.85 V + 140 mV dropout) under full 150 mA load. At lighter loads, dropout decreases - e.g., 2 mV at 100 µA - allowing operation down to 2.852 V. The absolute minimum VIN is also constrained to 2.7 V per Absolute Maximum Ratings, so actual minimum is the greater of these two values.
How does the ERROR pin on TC2186-2.85VCTTR function in practice?
The ERROR pin on TC2186-2.85VCTTR is an open-drain output that pulls low when VOUT falls below 2.708 V (−5% of 2.85 V), with 50 mV hysteresis. It sinks up to 18 mA and is commonly used as a battery-low flag or processor reset signal - requiring only a pull-up resistor (e.g., 100 kΩ to VOUT) and optional timing capacitor for debounce.
Can TC2186-2.85VCTTR operate with a 1 µF ceramic output capacitor?
Yes - TC2186-2.85VCTTR is explicitly characterized and guaranteed stable with a 1 µF ceramic output capacitor (ESR 0.01–5 Ω). This eliminates need for larger or more expensive tantalum/aluminum electrolytics, reducing BOM cost and PCB area while supporting fast load-transient response in portable designs.
What thermal protection features does TC2186-2.85VCTTR include?
TC2186-2.85VCTTR incorporates thermal shutdown that disables the regulator when die temperature exceeds ~160°C, with automatic recovery once temperature falls to ~150°C. It also includes overcurrent limiting to protect against short circuits - both features are fully integrated and require no external components to function.
Is TC2186-2.85VCTTR pin-compatible with older bipolar LDOs?
Yes - TC2186-2.85VCTTR is designed as a direct pin-compatible upgrade for legacy bipolar LDOs in SOT-23-5 packages. Its pinout (VIN, GND, SHDN, ERROR, VOUT) matches industry-standard footprints, enabling drop-in replacement without PCB redesign - while delivering lower quiescent current, tighter accuracy, and added functionality like ERROR signaling.
TC2186-2.85VCTTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.21V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 50dB (100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TC2186-2.85VCTTR FAQ
1.How can I place an order for TC2186-2.85VCTTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC2186-2.85VCTTR 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 TC2186-2.85VCTTR reliable?
The price and inventory of TC2186-2.85VCTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC2186-2.85VCTTR is usually 5 days.
3.What payment methods are accepted for TC2186-2.85VCTTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC2186-2.85VCTTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC2186-2.85VCTTR?
TC2186-2.85VCTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC2186-2.85VCTTR 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 TC2186-2.85VCTTR?
For technical support, including TC2186-2.85VCTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC2186-2.85VCTTR requirements.
6.How does Aetrix verify that TC2186-2.85VCTTR is sourced from the original manufacturer or authorized distributors?
All TC2186-2.85VCTTR 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 TC2186-2.85VCTTR meets industry standards.
7.What is the process for return or replacement of TC2186-2.85VCTTR?
All TC2186-2.85VCTTR units undergo pre-shipment inspection (PSI). If there is an issue with TC2186-2.85VCTTR, 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 TC2186-2.85VCTTR part is unused and in its original packaging.
Return procedure for TC2186-2.85VCTTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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