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Microchip Technology MCP1700T-4502E/MB
- Part No.:
- MCP1700T-4502E/MB
- Manufacturer:
- Microchip Technology
- Package:
- TO-243AA
- Datasheet:
-
MCP1700T-4502E/MB.pdf
- Description:
- IC REG LINEAR 4.5V 250MA SOT89-3
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP1700T-4502E/MB from Microchip Technology is a CMOS low-dropout (LDO) voltage regulator delivering 250 mA output current at ≥2.5V output, with 1.6 µA typical quiescent current, 178 mV typical dropout at 250 mA (VOUT = 2.8V), ±0.4% output voltage tolerance at +25°C, and stable operation with only 1.0 µF ceramic output capacitor - deployed in smoke detectors, CO₂ sensors, and microcontroller power rails.
For engineers reviewing the MCP1700T-4502E/MB datasheet, MCP1700T-4502E/MB pinout, MCP1700T-4502E/MB application, or MCP1700T-4502E/MB equivalent, key selection criteria include ultra-low IQ, AEC-Q100 qualification, thermal shutdown at 140°C, SOT-23-3 package compatibility, and support for 2.3V–6.0V input across battery-powered industrial and automotive sensing systems.
Technical Context
The MCP1700T-4502E/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 load and line conditions.
Overcurrent protection operates via cycle-by-cycle shutdown during short-circuit events, while overtemperature protection triggers at 140°C junction temperature and recovers at ~130°C. The device is specified for continuous operation from –40°C to +125°C junction temperature with full DC performance guaranteed across that range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.50 V ±0.4% (typical at +25°C); tight initial accuracy enables direct use in ADC reference and MCU core supply without trimming. |
| Quiescent Current | 1.6 µA typical; allows >10-year battery life in always-on smoke/CO₂ detectors powered by two alkaline cells. |
| Max Output Current | 250 mA (for VOUT ≥2.5V); sufficient to power 32-bit MCUs, RF transceivers, and analog sensor signal chains simultaneously. |
| Dropout Voltage | 178 mV typical @ 250 mA (VOUT = 2.8V); supports regulation down to VIN = 4.678 V for 4.5 V output, extending usable battery voltage range. |
| Input Voltage Range | 2.3 V to 6.0 V; compatible with single-cell Li-ion (3.0–4.2 V), two-cell alkaline (2.4–3.2 V), or three-cell NiMH (3.6–4.5 V) sources. |
| Thermal Shutdown | 140°C typical; protects against sustained overload or poor PCB thermal design in enclosed industrial enclosures. |
| Stability | Stable with 1.0 µF ceramic output capacitor; eliminates need for larger, higher-ESR tantalum or electrolytic capacitors, reducing BOM cost and footprint. |
Pinout & Package
SOT-23-3 surface-mount package with exposed pad not present in this variant; compact 2.9 mm × 1.3 mm footprint optimized for space-constrained battery-powered PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Unregulated Input Supply | Connects to battery or DC source; must be decoupled with ≥1 µF ceramic capacitor near pin to ensure stability under dynamic load. |
| 2 (GND) | Regulator Ground Reference | Low-current return path (1.6 µA typical); must tie directly to system ground plane with minimal trace inductance to avoid regulation error. |
| 3 (VOUT) | Regulated Output Voltage | Delivers 4.50 V to load; output capacitor must be placed adjacent to this pin to suppress high-frequency noise and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Validated for automotive-grade reliability (Grade 3: –40°C to +125°C), enabling use in under-hood and cabin-sensing modules without additional qualification effort. |
| 1.6 µA Quiescent Current | Enables multi-year operation on coin cells or AA/AAA batteries in maintenance-free safety devices like smoke alarms. |
| ±0.4% Output Tolerance | Reduces need for external calibration in precision analog front-ends and ADC reference applications. |
| Short-Circuit Protection | Auto-recovering foldback limits fault energy, preventing thermal runaway during accidental board shorts or connector miswiring. |
| Stable with 1 µF Ceramic Cap | Lowers total solution size and cost versus legacy LDOs requiring ≥10 µF tantalum, simplifying layout and improving high-frequency PSRR. |
Applications
| Smoke Detection Systems | CO₂ Sensing Modules |
|---|---|
Use Scenario: Continuous 24/7 monitoring in residential and commercial fire alarm panels using electrochemical or photoelectric sensors. IC Role / Device Role / Timing Role: Primary 4.5 V power rail for sensor biasing, analog signal conditioning, and low-power MCU sleep/wake cycles. Use Value: Ultra-low 1.6 µA quiescent current extends battery life beyond 10 years in sealed units; ±0.4% output ensures consistent sensor response calibration over temperature. |
Use Scenario: Portable indoor air quality monitors with NDIR CO₂ sensors requiring stable, low-noise analog supply. IC Role / Device Role / Timing Role: Precision 4.5 V reference for IR source driver and detector amplifier stages. Use Value: 3 µV/√Hz output noise and 44 dB PSRR at 100 Hz minimize measurement drift; 1 µF ceramic stability simplifies compact PCB layout. |
| Smart Battery Packs | Industrial Microcontroller Power |
Use Scenario: Fuel gauging and protection circuitry inside lithium-ion battery packs for power tools and medical devices. IC Role / Device Role / Timing Role: Regulated 4.5 V supply for gas gauge ICs, thermistor interfaces, and MOSFET gate drivers. Use Value: AEC-Q100 qualification ensures robustness against vibration and thermal cycling; 250 mA output supports simultaneous communication and sensing. |
Use Scenario: Embedded control units in factory automation PLCs and motor drives requiring reliable MCU core voltage under variable load. IC Role / Device Role / Timing Role: Main 4.5 V supply for ARM Cortex-M4/M7 microcontrollers and associated peripherals (CAN, ADC, timers). Use Value: 178 mV dropout preserves regulation during brown-out conditions; thermal shutdown prevents latch-up during transient overloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P452MR | 4.5 V fixed output, 250 mA max, 1.0 µA IQ, but only rated to +85°C ambient and lacks AEC-Q100 qualification. | Suitable for consumer portable electronics; not recommended for automotive or industrial safety-critical deployments. | Select when lowest possible IQ is primary and extended temperature or automotive compliance is unnecessary. |
| ON Semiconductor NCP170AMX450TCG | 4.5 V fixed output, 250 mA, 600 nA IQ, but dropout is 220 mV @ 250 mA and no AEC-Q100 rating. | Better for ultra-long-life IoT nodes; insufficient thermal margin for high-ambient industrial environments. | Prefer where nanoscale IQ outweighs dropout penalty and automotive qualification is not required. |
Compared with XC6206P452MR and NCP170AMX450TCG, the MCP1700T-4502E/MB uniquely combines AEC-Q100 Grade 3 qualification, 178 mV dropout, and ±0.4% output accuracy - making it the only option qualified for safety-critical automotive and industrial sensing where reliability across –40°C to +125°C is non-negotiable.
Availability
MCP1700T-4502E/MB is available at Aetrix Electronics and suitable for smoke detection systems, CO₂ sensing modules, and smart battery pack designs requiring stable component supply with long-term lifecycle assurance.
Supply support for MCP1700T-4502E/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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and software platforms.
The MCP1700 series was designed specifically for ultra-low-power, high-accuracy voltage regulation in battery-operated safety and sensing applications - emphasizing AEC-Q100 compliance, micropower operation, and minimal external component count.
FAQ
What is the output voltage tolerance of the MCP1700T-4502E/MB over temperature?
The MCP1700T-4502E/MB has a typical output voltage tolerance of ±0.4% at +25°C and ±3% maximum over the full operating junction temperature range of –40°C to +125°C. This specification is verified per DS20001826F, Table 1-1, and ensures predictable performance in automotive and industrial environments where thermal cycling is routine. The MCP1700T-4502E/MB maintains regulation within these bounds without external trimming.
Does the MCP1700T-4502E/MB require an external bypass capacitor?
Yes - the MCP1700T-4502E/MB requires a minimum 1.0 µF ceramic output capacitor (X7R or better) placed adjacent to the VOUT pin for small-signal stability. An input capacitor of ≥1.0 µF ceramic is also recommended at the VIN pin to suppress source impedance effects. These values are validated in DS20001826F Section 5.2 and Figure 6-1, and omitting them risks oscillation or poor transient response. The MCP1700T-4502E/MB does not function reliably without both capacitors.
Is the MCP1700T-4502E/MB pin-compatible with other variants in the MCP1700 family?
Yes - the MCP1700T-4502E/MB uses the standard SOT-23-3 package with identical pinout (VIN, GND, VOUT) as all other SOT-23-packaged MCP1700 variants, including MCP1700T-3302E/MB and MCP1700T-2802E/MB. This allows drop-in replacement across output voltages without PCB redesign. However, output voltage and thermal characteristics differ, so system-level validation of load regulation and junction temperature remains essential. The MCP1700T-4502E/MB shares mechanical and electrical pin compatibility but not functional interchangeability without review.
What protection features are integrated into the MCP1700T-4502E/MB?
The MCP1700T-4502E/MB integrates short-circuit protection with auto-recovery foldback and overtemperature shutdown at 140°C (typical), with restart at ~130°C. It also includes internal current limiting and ESD protection rated ≥4 kV HBM on all pins. These protections are fully characterized in DS20001826F Sections 4.2–4.3 and Absolute Maximum Ratings table. No external components are needed to enable these functions - they operate autonomously within the MCP1700T-4502E/MB die.
Can the MCP1700T-4502E/MB be used as a precision voltage reference?
Yes - the MCP1700T-4502E/MB is explicitly documented for voltage reference use in DS20001826F Section 6.4, leveraging its ±0.4% initial accuracy, 50 ppm/°C temperature coefficient, and low 3 µV/√Hz output noise. When calibrated at production test, its thermal stability and line regulation become the dominant error sources - making it suitable for 12-bit ADC references and sensor excitation circuits. The MCP1700T-4502E/MB delivers reference-grade performance without dedicated reference IC cost or complexity.
MCP1700T-4502E/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):
- 4.5V
- 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-4502E/MB FAQ
1.How can I place an order for MCP1700T-4502E/MB through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1700T-4502E/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-4502E/MB reliable?
The price and inventory of MCP1700T-4502E/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-4502E/MB is usually 5 days.
3.What payment methods are accepted for MCP1700T-4502E/MB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1700T-4502E/MB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1700T-4502E/MB?
MCP1700T-4502E/MB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1700T-4502E/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-4502E/MB?
For technical support, including MCP1700T-4502E/MB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1700T-4502E/MB requirements.
6.How does Aetrix verify that MCP1700T-4502E/MB is sourced from the original manufacturer or authorized distributors?
All MCP1700T-4502E/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-4502E/MB meets industry standards.
7.What is the process for return or replacement of MCP1700T-4502E/MB?
All MCP1700T-4502E/MB units undergo pre-shipment inspection (PSI). If there is an issue with MCP1700T-4502E/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-4502E/MB part is unused and in its original packaging.
Return procedure for MCP1700T-4502E/MB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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