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Microchip Technology MCP1700T-2802E/MB
- Part No.:
- MCP1700T-2802E/MB
- Manufacturer:
- Microchip Technology
- Package:
- TO-243AA
- Datasheet:
-
MCP1700T-2802E/MB.pdf
- Description:
- IC REG LINEAR 2.8V 250MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,595
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Product details
Overview
MCP1700T-2802E/MB from Microchip Technology is a CMOS low-dropout (LDO) voltage regulator delivering 250 mA output current at 2.8 V with 178 mV typical dropout, 1.6 µA quiescent current, ±0.4% output voltage tolerance, and stable operation with only 1.0 µF ceramic output capacitor. It serves as the primary power supply for microcontrollers and sensors in battery-powered smoke detectors and CO₂ monitors.
For engineers reviewing the MCP1700T-2802E/MB datasheet, MCP1700T-2802E/MB pinout, MCP1700T-2802E/MB application, or MCP1700T-2802E/MB equivalent, key selection criteria include ultra-low quiescent current, AEC-Q100 qualification, SOT-23-3 package compatibility, thermal shutdown behavior at 140°C, and load regulation performance across –40°C to +125°C junction temperature.
Technical Context
The MCP1700T-2802E/MB uses a P-channel PMOS pass transistor architecture enabling low dropout and minimal ground current. Its internal error amplifier compares a fraction of VOUT against a precision bandgap reference to maintain regulation under varying input voltage (2.3–6.0 V) and load conditions (0–250 mA).
Overcurrent protection operates via cycle-by-cycle shutdown and restart during short circuits; overtemperature protection triggers at 140°C typical junction temperature and recovers at ~130°C. The device is stable with 1.0 µF ceramic output capacitance and supports input capacitors of ceramic, tantalum, or aluminum electrolytic types.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±0.4% (typical at +25°C), ±3% max over –40°C to +125°C junction range |
| Quiescent Current | 1.6 µA typical - enables >10-year battery life in low-duty-cycle sensor nodes |
| Dropout Voltage | 178 mV typical @ 250 mA - allows operation down to 2.978 V input for full 2.8 V output |
| Max Output Current | 250 mA for VOUT ≥ 2.5 V - sufficient to power ARM Cortex-M0+ MCUs and analog front-ends |
| Input Voltage Range | 2.3 V to 6.0 V - compatible with 2× alkaline (3.2 V), 3× alkaline (4.8 V), or single Li-ion (3.0–4.2 V) |
| Thermal Shutdown | 140°C typical - protects against sustained overload in sealed enclosures |
| Stability Capacitor | 1.0 µF ceramic (X7R) - eliminates need for large tantalum or electrolytic capacitors |
Pinout & Package
SOT-23-3 surface-mount package with exposed pad not present; compact 2.92 mm × 1.3 mm footprint optimized for space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Unregulated Input Supply | Connects to source of P-MOS pass transistor; requires low-impedance source (≤10 Ω) and ≥1 µF ceramic decoupling |
| 2 (GND) | Regulator Ground Reference | Reference node for output voltage; carries only 1.6 µA bias current - no high-current return path |
| 3 (VOUT) | Regulated Output Terminal | Delivers 2.8 V to load; must be routed adjacent to 1 µF ceramic capacitor with minimal trace inductance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Validated for automotive-grade reliability (Grade 3: –40°C to +125°C), supporting PPAP documentation |
| Low Dropout Architecture | P-channel MOSFET pass element eliminates base drive loss - enables <200 mV dropout at full load |
| Ultra-Low Quiescent Current | 1.6 µA typical - reduces standby power by >90% vs. legacy bipolar LDOs in always-on sensor applications |
| Robust Protection | Integrated short-circuit foldback and thermal shutdown prevent latch-up or permanent damage during fault events |
| Wide Input Compatibility | Operates from 2.3 V - supports partial discharge of two-cell alkaline batteries (down to ~1.15 V/cell) |
Applications
| Smoke Detector Power | CO₂ Sensor Biasing |
|---|---|
|
Use Scenario: Standby power for electrochemical CO₂ sensing module in residential alarm systems with 10-year lithium thionyl chloride battery. IC Role / Device Role / Timing Role: Primary 2.8 V bias rail for analog signal conditioning and ADC reference; supplies 80 µA continuous + 5 mA pulse load. Use Value: 1.6 µA quiescent current extends battery life beyond 10 years; 1 µF ceramic stability eliminates ESR-related oscillation risk in low-temperature storage. |
Use Scenario: Power management for optical NDIR CO₂ sensor in smart HVAC controllers requiring stable 2.8 V for IR emitter driver and photodiode amplifier. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric measurement; maintains ±0.4% output accuracy across –25°C to +70°C ambient. Use Value: Low dropout enables operation from partially depleted 3× alkaline stack (down to 3.3 V); thermal shutdown prevents drift-induced calibration errors during enclosure overheating. |
| Smart Battery Pack Monitor | Microcontroller Core Supply |
|
Use Scenario: Voltage regulation for fuel gauge IC and BLE radio in rechargeable Li-ion battery packs used in portable medical devices. IC Role / Device Role / Timing Role: Isolated 2.8 V rail for system management MCU; decoupled from main battery voltage fluctuations during charge/discharge cycles. Use Value: 250 mA capability supports BLE burst transmission; AEC-Q100 qualification ensures reliability in safety-critical battery monitoring firmware. |
Use Scenario: Core supply for 32-bit ARM Cortex-M0+ microcontroller in industrial wireless sensor node operating on two AA cells. IC Role / Device Role / Timing Role: Primary VDD rail powering CPU, flash, and peripherals; regulated independently of RF transceiver switching noise. Use Value: Stable 2.8 V output with ±1.0% load regulation ensures deterministic clock timing and ADC linearity across 0–200 mA dynamic load profile. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P282MR-G | 2.8 V fixed, 150 mA max output, 1.0 µA IQ, SOT-23-3 package | Limited to lower current loads; lacks AEC-Q100 qualification and thermal shutdown threshold specification | Select when cost sensitivity outweighs automotive compliance and 250 mA headroom requirements |
| ON Semiconductor NCP170AMX280TCG | 2.8 V fixed, 250 mA, 500 nA IQ, SOT-23-3, but ±2% output tolerance and no AEC-Q100 rating | Superior quiescent current but reduced initial accuracy; thermal shutdown threshold unspecified in datasheet | Prefer for ultra-long-life consumer IoT where ±2% output tolerance is acceptable and automotive validation is unnecessary |
Compared with XC6206P282MR-G and NCP170AMX280TCG, the MCP1700T-2802E/MB uniquely combines AEC-Q100 qualification, ±0.4% output accuracy, and 250 mA capability in SOT-23-3 - making it the only option qualified for functional-safety-relevant battery-powered alarm systems.
Availability
MCP1700T-2802E/MB is available at Aetrix Electronics and suitable for smoke detector manufacturing, CO₂ sensor module production, and smart battery pack assembly requiring stable component supply with guaranteed long-term continuity.
Supply support for MCP1700T-2802E/MB 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 components, and Flash-IP solutions, serving automotive, industrial, and consumer markets with vertically integrated design and manufacturing capabilities.
The MCP1700 product line delivers micropower LDO regulators optimized for battery longevity and wide-input-voltage operation in safety-critical sensing and control applications - specifically engineered for smoke alarms, gas detectors, and portable medical devices.
FAQ
What is the maximum continuous output current for MCP1700T-2802E/MB?
The MCP1700T-2802E/MB delivers up to 250 mA continuous output current when regulating to 2.8 V, as confirmed in the DC Characteristics table (DS20001826F, page 3). This rating applies across the full operating junction temperature range of –40°C to +125°C and assumes adequate PCB copper area for thermal dissipation in the SOT-23-3 package.
Does MCP1700T-2802E/MB require an external capacitor for stability?
Yes - the MCP1700T-2802E/MB requires a minimum 1.0 µF ceramic (X7R) output capacitor placed adjacent to the VOUT and GND pins for small-signal stability, as specified in Section 5.2 and Figure 6-1 of DS20001826F. Input capacitance of 1.0 µF ceramic is also recommended to ensure low source impedance and prevent instability under transient load conditions.
Is MCP1700T-2802E/MB qualified for automotive applications?
Yes - the MCP1700T-2802E/MB is explicitly AEC-Q100 qualified (Grade 3: –40°C to +125°C) and PPAP-capable, as stated in the Features section of DS20001826F. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD, making it suitable for under-hood and cabin-mounted automotive subsystems.
What is the dropout voltage of MCP1700T-2802E/MB at full load?
The dropout voltage of MCP1700T-2802E/MB is 178 mV typical at 250 mA load and 2.8 V output, per the "Dropout Voltage" specification in DS20001826F (page 3). At worst-case conditions (125°C junction, 250 mA), dropout rises to 350 mV - meaning the device maintains regulation as long as VIN remains ≥3.15 V.
How does thermal shutdown operate in MCP1700T-2802E/MB?
The MCP1700T-2802E/MB activates thermal shutdown at a typical junction temperature of 140°C (DS20001826F, page 4), halting output until junction temperature falls to ~130°C. This hysteresis prevents rapid cycling; recovery is automatic and requires no external reset. The SOT-23-3 package has θJA = 212°C/W on a 4-layer FR-4 board, limiting safe continuous power dissipation to ~401 mW at +40°C ambient.
MCP1700T-2802E/MB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- TO-243AA
- 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):
- 0.35V @ 250mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 4 µA
- Current - Supply (Max):
- -
- PSRR:
- 44dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
MCP1700T-2802E/MB FAQ
1.How can I place an order for MCP1700T-2802E/MB through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1700T-2802E/MB 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 MCP1700T-2802E/MB reliable?
The price and inventory of MCP1700T-2802E/MB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1700T-2802E/MB is usually 5 days.
3.What payment methods are accepted for MCP1700T-2802E/MB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1700T-2802E/MB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1700T-2802E/MB?
MCP1700T-2802E/MB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1700T-2802E/MB 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 MCP1700T-2802E/MB?
For technical support, including MCP1700T-2802E/MB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1700T-2802E/MB requirements.
6.How does Aetrix verify that MCP1700T-2802E/MB is sourced from the original manufacturer or authorized distributors?
All MCP1700T-2802E/MB 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 MCP1700T-2802E/MB meets industry standards.
7.What is the process for return or replacement of MCP1700T-2802E/MB?
All MCP1700T-2802E/MB units undergo pre-shipment inspection (PSI). If there is an issue with MCP1700T-2802E/MB, 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 MCP1700T-2802E/MB part is unused and in its original packaging.
Return procedure for MCP1700T-2802E/MB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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