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Microchip Technology TC1185-2.8VCT713
- Part No.:
- TC1185-2.8VCT713
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TC1185-2.8VCT713.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,913
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Product details
Overview
TC1185-2.8VCT713 from Microchip Technology is a fixed-output, 2.8 V CMOS low-dropout (LDO) regulator delivering up to 500 mA output current with ±0.5% output voltage accuracy, 350 mV typical dropout at full load, and AEC-Q100 automotive qualification. It operates from 2.7 V to 6.0 V input and is used in battery-powered medical instruments and portable communication devices requiring stable, low-noise power.
For engineers reviewing the TC1185-2.8VCT713 datasheet, TC1185-2.8VCT713 pinout, TC1185-2.8VCT713 application, or TC1185-2.8VCT713 equivalent, key selection criteria include dropout voltage at 500 mA, thermal shutdown threshold (160°C), PSRR (64 dB @ ≤1 kHz), ground current stability across load, and compatibility with 1 μF minimum ceramic output capacitance.
Technical Context
The TC1185-2.8VCT713 implements a CMOS-based regulation architecture that maintains constant 80 μA quiescent current independent of load-unlike bipolar LDOs-enabling extended battery life in always-on instrumentation. Its internal circuitry integrates overcurrent and overtemperature protection, with thermal shutdown activating at 160°C and recovery at ~150°C.
Stability is achieved with only 1 μF output capacitance (ESR > 0.1 Ω and < 5 Ω), and the device supports fast transient response to step-load changes due to low output impedance and ultra-low noise (260 nV/√Hz at 10 kHz). Input-to-output line regulation is 0.003% typical over VIN = VR + 1 V to 6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±0.5% at 25°C; ensures precision biasing for 2.8 V logic rails and analog sensors |
| Max Output Current | 500 mA continuous; supports power delivery to microcontrollers, RF front-ends, or display drivers |
| Dropout Voltage | 350 mV typical at 500 mA; enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) |
| Quiescent Current | 80 μA typical at full load; 20–60× lower than bipolar regulators, critical for battery longevity |
| PSRR | 64 dB @ ≤1 kHz; suppresses ripple from upstream SMPS in linear post-regulator configurations |
| Thermal Shutdown | Triggers at 160°C junction temperature; protects against sustained overload or poor heatsinking |
| Operating Temp | -40°C to +125°C; qualified per AEC-Q100 Grade 1 for under-hood and industrial environments |
Pinout & Package
TC1185-2.8VCT713 is supplied in a 3-pin SOT-223 package with exposed thermal pad (Tab = GND). Pin 1 is VIN, Pin 2 is GND, Pin 3 is VOUT. The package supports surface-mount assembly and requires PCB copper area ≥2500 mm² on topside for θJA = 45°C/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated input supply | Accepts 2.7–6.0 V; must be decoupled with ≥1 μF capacitor when sourced from battery or long traces |
| GND (Pin 2) | Ground reference and thermal path | Common return for input/output; Tab connects internally to GND and must be soldered to large copper pour |
| VOUT (Pin 3) | Regulated 2.8 V output | Delivers up to 500 mA; requires 1 μF ceramic capacitor to ground for stability and noise filtering |
Key Features
| Feature | Design Value |
|---|---|
| CMOS construction | Eliminates load-dependent ground current-quiescent current remains 80 μA from 0 to 500 mA load |
| Ultra-low noise | 260 nV/√Hz at 10 kHz enables clean power for ADCs, RF ICs, and precision analog circuits |
| Fast load transient response | Maintains regulation during 100 mA → 500 mA steps without overshoot/excessive droop |
| Single-capacitor stability | Stable with 1 μF ceramic output cap (ESR 0.1–5 Ω); reduces BOM count and board space vs. multi-cap designs |
| AEC-Q100 qualification | Validated for automotive applications including infotainment, telematics, and body control modules |
Applications
| Portable Medical Sensors | Automotive Telematics Modules |
|---|---|
Use Scenario: Powering low-power ECG front-end ASICs and Bluetooth LE transceivers in wearable patient monitors. IC Role / Device Role / Timing Role: Primary 2.8 V LDO supplying analog signal chain and digital radio subsystems. Use Value: 80 μA quiescent current extends battery life beyond 7 days; ±0.5% output accuracy ensures consistent ADC reference scaling. | Use Scenario: Regulating 2.8 V rail for GPS/GNSS receivers and cellular modems in vehicle-mounted tracking units. IC Role / Device Role / Timing Role: Post-regulator after buck converter, rejecting switching noise before sensitive RF sections. Use Value: 64 dB PSRR at ≤1 kHz attenuates SMPS ripple; -40°C to +125°C rating supports under-dash mounting. |
| Industrial Handheld Terminals | Smart Energy Meters |
Use Scenario: Providing stable 2.8 V supply to ARM Cortex-M microcontrollers and capacitive touch controllers in field-service PDAs. IC Role / Device Role / Timing Role: Main system LDO enabling low-power sleep modes and wake-on-interrupt functionality. Use Value: Constant 80 μA IQ across load prevents battery drain during deep-sleep states; 350 mV dropout allows operation down to 3.15 V battery voltage. | Use Scenario: Powering metrology ADCs and real-time clocks in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Precision voltage source for reference buffers and RTC backup circuits. Use Value: 40 ppm/°C tempco and ±0.5% initial accuracy maintain measurement integrity across temperature; thermal shutdown prevents fault propagation. |
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 | 250 mA max output, 6 μA IQ, SOT-23 package; lower current, much lower quiescent current | Suitable for ultra-low-power sensor nodes but insufficient for 500 mA loads | Select when load current ≤250 mA and IQ < 10 μA is mandatory; not a drop-in replacement |
| TPS7A2028PDQNR | 500 mA output, 6.5 μA IQ, 190 mV dropout at 500 mA, WSON-6 package with enable pin | Includes active-high EN pin and better dropout; requires PCB layout change and external enable logic | Choose for lowest dropout and smallest footprint; verify EN timing and routing if replacing TC1185-2.8VCT713 |
Compared with MCP1700-2802E/TO and TPS7A2028PDQNR, TC1185-2.8VCT713 provides higher output current headroom and automotive qualification without enable functionality-making it optimal for cost-sensitive, high-reliability 500 mA applications where minimal external components and proven thermal robustness are prioritized.
Availability
TC1185-2.8VCT713 is available at Aetrix Electronics and suitable for battery-operated medical instruments, automotive telematics modules, and industrial handheld terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TC1185-2.8VCT713 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 leading provider of microcontrollers, analog devices, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with integrated silicon and development tools.
The TC1262 family-including TC1185-2.8VCT713-is designed as a high-accuracy, low-noise CMOS LDO series targeting battery-powered and automotive systems where efficiency, thermal resilience, and output stability are critical.
FAQ
What is the maximum input voltage rating for TC1185-2.8VCT713?
The absolute maximum input voltage for TC1185-2.8VCT713 is 6.5 V. Continuous operation above 6.0 V is not recommended, as electrical specifications are guaranteed only up to 6.0 V input. Exceeding 6.5 V risks permanent damage per Microchip's Absolute Maximum Ratings.
Does TC1185-2.8VCT713 require an input capacitor?
TC1185-2.8VCT713 does not mandate an input capacitor for stability, but a 1 μF aluminum electrolytic or tantalum capacitor from VIN to GND is recommended when powered by batteries or when more than 10 inches of wire separates the regulator from the AC filter capacitor-improving supply-noise rejection and transient response.
Is TC1185-2.8VCT713 pin-compatible with other TC1262 variants?
Yes-TC1185-2.8VCT713 shares identical pinout (VIN-GND-VOUT), package (SOT-223), and thermal pad connection with all TC1262-x.xVDB variants. Output voltage is the sole functional difference; no PCB redesign is needed when substituting between TC1262-2.8VDB, TC1262-3.3VDB, or TC1185-2.8VCT713.
What thermal resistance can be expected with TC1185-2.8VCT713 on a standard PCB?
With 2500 mm² copper area on both top and bottom layers, TC1185-2.8VCT713 achieves θJA ≈ 45°C/W in SOT-223. Reducing copper area to 100 mm² raises θJA to 59°C/W-limiting max continuous power dissipation to ~508 mW at TA = 95°C before thermal shutdown activates.
Can TC1185-2.8VCT713 be used without a load?
Yes-TC1185-2.8VCT713 regulates stably from 0 mA to 500 mA load. Its CMOS design ensures output voltage remains within ±0.5% tolerance and quiescent current stays at 80 μA even at zero load, making it suitable for RTC backup and always-on monitoring circuits.
TC1185-2.8VCT713 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 64dB (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:
- SOT-23-5
TC1185-2.8VCT713 FAQ
1.How can I place an order for TC1185-2.8VCT713 through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1185-2.8VCT713 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 TC1185-2.8VCT713 reliable?
The price and inventory of TC1185-2.8VCT713 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1185-2.8VCT713 is usually 5 days.
3.What payment methods are accepted for TC1185-2.8VCT713?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1185-2.8VCT713 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1185-2.8VCT713?
TC1185-2.8VCT713 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1185-2.8VCT713 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 TC1185-2.8VCT713?
For technical support, including TC1185-2.8VCT713 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1185-2.8VCT713 requirements.
6.How does Aetrix verify that TC1185-2.8VCT713 is sourced from the original manufacturer or authorized distributors?
All TC1185-2.8VCT713 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 TC1185-2.8VCT713 meets industry standards.
7.What is the process for return or replacement of TC1185-2.8VCT713?
All TC1185-2.8VCT713 units undergo pre-shipment inspection (PSI). If there is an issue with TC1185-2.8VCT713, 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 TC1185-2.8VCT713 part is unused and in its original packaging.
Return procedure for TC1185-2.8VCT713:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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