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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Microchip Technology MCP1700T-5002E/MAY

Name: MCP1700T-5002E/MAY
Brand: Microchip Technology
SKU: MCP1700T-5002E/MAY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MCP1700T-5002E/MAY

Manufacturer:: Microchip Technology

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 6-VDFN Exposed Pad

Datasheet:: MCP1700T-5002E/MAY.pdf

Description:: IC REG LINEAR 5V 250MA 6DFN

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Product details

Overview

MCP1700T-5002E/MAY from Microchip Technology is a CMOS low-dropout (LDO) voltage regulator delivering 5.0 V at up to 250 mA output current with only 1.6 µA typical quiescent current, operating from 2.3 V to 6.0 V input. It features ±0.4% typical output voltage tolerance, 178 mV typical dropout at 250 mA (V_OUT = 2.8 V), and stability with 1.0 µF ceramic output capacitor - ideal for microcontroller power in battery-powered smoke detectors.

For engineers reviewing the MCP1700T-5002E/MAY datasheet, MCP1700T-5002E/MAY pinout, MCP1700T-5002E/MAY application, or MCP1700T-5002E/MAY equivalent, key selection criteria include ultra-low I_Q, AEC-Q100 qualification, thermal shutdown behavior, dropout performance at 5.0 V output, and SOT-23 package thermal resistance (θ_JA = 212°C/W).

Technical Context

The MCP1700T-5002E/MAY uses a P-channel PMOS pass transistor architecture enabling low dropout and minimal ground current. Its internal error amplifier compares a fraction of V_OUT against a precision bandgap reference to regulate output voltage under varying load and line conditions.

Protection circuitry includes foldback current limiting that cycles during short-circuit events and thermal shutdown triggered at 140°C junction temperature with automatic recovery at ~130°C. The device is stable with 1.0 µF ceramic output capacitance and supports input sources ranging from two alkaline cells to single Li-ion batteries.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 5.0 V ±0.4% (typical at +25°C); ±3% max over –40°C to +125°C junction range
Max Output Current	250 mA continuous (for V_OUT ≥ 2.5 V); sufficient to power 32-bit MCUs and sensor interfaces
Quiescent Current	1.6 µA typical; enables >10-year battery life in always-on CO₂ detectors with coin cells
Dropout Voltage	178 mV typical @ 250 mA (V_OUT = 2.8 V); for 5.0 V output, ensures regulation down to ~5.2 V input
Input Voltage Range	2.3 V to 6.0 V; compatible with 2–4 alkaline cells or single Li-ion (3.0–4.2 V) with headroom margin
PSRR	44 dB @ 100 Hz; suppresses ripple from noisy switching supplies feeding the LDO input
Thermal Shutdown	140°C typical activation; prevents permanent damage during sustained overload or poor PCB heatsinking

Pinout & Package

Package: SOT-23 (3-pin, surface-mount). Thermal resistance θ_JA = 212°C/W on FR-4 4-layer board per JESD51-7.

Pin/Terminal	Circuit Role	Design Meaning
VIN (Pin 3)	Unregulated input supply	Connects to source of P-MOS pass transistor; requires ≤10 Ω source impedance and ≥1 µF ceramic decoupling
GND (Pin 1)	Regulator ground reference	Reference node for output regulation; carries only 1.6 µA bias current - not load return path
VOUT (Pin 2)	Regulated output voltage	Delivers 5.0 V to load; must be routed close to 1 µF output capacitor to minimize ESR-induced instability

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 sensors
Stable with 1 µF Ceramic Cap	Eliminates need for larger, higher-ESR tantalum capacitors - reduces BOM cost and PCB area
Short-Circuit Protection	Auto-recovering foldback current limit prevents latch-up during accidental VOUT-to-GND faults
Overtemperature Shutdown	Hysteresis (~10°C) between 140°C shutdown and 130°C restart avoids thermal oscillation in enclosed enclosures
Low Noise Output	3 µV/√Hz at 1 kHz; suitable for powering ADC references and RF front-end bias rails without added filtering

Applications

Smoke Detector Power	Smart Battery Pack Monitoring
Use Scenario: Standby power for optical chamber and alarm driver in UL-certified residential smoke alarms. IC Role / Device Role / Timing Role: Primary 5.0 V LDO supplying MCU, analog sensor interface, and piezo driver. Use Value: 1.6 µA I_Q extends 9 V alkaline battery life beyond 10 years in sleep mode; 5.0 V output matches legacy MCU VDD requirements.	Use Scenario: Powering fuel-gauge IC and protection circuitry in multi-cell Li-ion battery packs for power tools. IC Role / Device Role / Timing Role: Isolated 5.0 V rail for coulomb counter and cell-balancing logic independent of pack voltage fluctuations. Use Value: 2.3–6.0 V input range accommodates full pack discharge (3.0–12.6 V) via pre-regulator; AEC-Q100 qualification supports industrial safety standards.
CO₂ Sensor Module	Industrial Microcontroller Supply
Use Scenario: Powering NDIR CO₂ sensor ASIC and signal conditioning circuitry in HVAC air quality monitors. IC Role / Device Role / Timing Role: Low-noise 5.0 V supply for precision analog front-end and thermopile biasing. Use Value: 3 µV/√Hz noise floor minimizes ADC quantization error; ±0.4% initial tolerance enables single-point calibration in production.	Use Scenario: Core VDD supply for ARM Cortex-M0+ microcontrollers in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Main 5.0 V regulator for MCU, CAN transceiver, and digital I/O drivers. Use Value: 250 mA output supports simultaneous peripheral activation; thermal shutdown protects against ambient + self-heating in sealed DIN-rail enclosures.

Smoke Detector Power

Smart Battery Pack Monitoring

Use Scenario: Standby power for optical chamber and alarm driver in UL-certified residential smoke alarms.

IC Role / Device Role / Timing Role: Primary 5.0 V LDO supplying MCU, analog sensor interface, and piezo driver.

Use Value: 1.6 µA I_Q extends 9 V alkaline battery life beyond 10 years in sleep mode; 5.0 V output matches legacy MCU VDD requirements.

Use Scenario: Powering fuel-gauge IC and protection circuitry in multi-cell Li-ion battery packs for power tools.

IC Role / Device Role / Timing Role: Isolated 5.0 V rail for coulomb counter and cell-balancing logic independent of pack voltage fluctuations.

Use Value: 2.3–6.0 V input range accommodates full pack discharge (3.0–12.6 V) via pre-regulator; AEC-Q100 qualification supports industrial safety standards.

CO₂ Sensor Module

Industrial Microcontroller Supply

Use Scenario: Powering NDIR CO₂ sensor ASIC and signal conditioning circuitry in HVAC air quality monitors.

IC Role / Device Role / Timing Role: Low-noise 5.0 V supply for precision analog front-end and thermopile biasing.

Use Value: 3 µV/√Hz noise floor minimizes ADC quantization error; ±0.4% initial tolerance enables single-point calibration in production.

Use Scenario: Core VDD supply for ARM Cortex-M0+ microcontrollers in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Main 5.0 V regulator for MCU, CAN transceiver, and digital I/O drivers.

Use Value: 250 mA output supports simultaneous peripheral activation; thermal shutdown protects against ambient + self-heating in sealed DIN-rail enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS70950DRVR	2.5 µA I_Q, 200 mA max output, 250 mV dropout @ 200 mA, SOT-23-5	Lacks AEC-Q100 qualification; no thermal shutdown hysteresis	Prefer MCP1700T-5002E/MAY for automotive or long-life battery systems requiring guaranteed shutdown/restart behavior.
NCP1117ST50T3G	6 mA I_Q, 1 A output, 1.2 V dropout @ 800 mA, SOT-223	Higher I_Q reduces battery life; larger package increases footprint and thermal mass	Prefer MCP1700T-5002E/MAY where ultra-low standby current and compact SOT-23 are mandatory.

Compared with TPS70950DRVR and NCP1117ST50T3G, the MCP1700T-5002E/MAY uniquely balances AEC-Q100 compliance, sub-2 µA quiescent current, and SOT-23 thermal performance - making it optimal for space-constrained, long-duration, and automotive-qualified applications demanding predictable thermal protection.

Availability

MCP1700T-5002E/MAY is available at Aetrix Electronics and suitable for smoke detector power, CO₂ sensor modules, smart battery pack monitoring, and industrial microcontroller supply requiring stable component supply across extended product lifecycles.

Supply support for MCP1700T-5002E/MAY 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 vertically integrated silicon and software platforms.

The MCP1700 family was designed specifically for ultra-low-power, high-accuracy voltage regulation in battery-operated safety-critical systems - emphasizing AEC-Q100 qualification, minimal quiescent current, and robust thermal protection.

FAQ

What is the maximum input voltage rating for the MCP1700T-5002E/MAY?

The MCP1700T-5002E/MAY has an absolute maximum input voltage rating of +6.5 V. Its operational input range is specified from 2.3 V to 6.0 V. Exceeding 6.5 V risks permanent damage per Absolute Maximum Ratings. For reliable 5.0 V output, VIN must remain ≥5.2 V to maintain regulation given its dropout characteristics.

Does the MCP1700T-5002E/MAY require an external output capacitor, and what type is recommended?

Yes, the MCP1700T-5002E/MAY requires a minimum 1.0 µF ceramic output capacitor (X7R or better) placed adjacent to the VOUT and GND pins. Ceramic capacitors are preferred due to their low ESR, which ensures stability and improves PSRR. Tantalum or aluminum electrolytic types may be used but require careful ESR validation to avoid oscillation.

Is the MCP1700T-5002E/MAY pin-compatible with other regulators in the MCP1700 family?

Yes - all SOT-23-packaged MCP1700 variants, including MCP1700T-5002E/MAY, share identical pinout (VIN on Pin 3, GND on Pin 1, VOUT on Pin 2). Output voltage is set internally; no external resistors are needed. This allows drop-in replacement across 1.2 V to 5.0 V versions when board layout and thermal design accommodate the specific variant's load and dropout requirements.

How does the thermal shutdown mechanism behave in the MCP1700T-5002E/MAY?

The MCP1700T-5002E/MAY activates thermal shutdown at ~140°C junction temperature and resumes operation once the junction cools to ~130°C. This 10°C hysteresis prevents rapid cycling during transient overloads. The shutdown is fully internal - no external components or configuration are required, and the device automatically recovers without reset signals.

Can the MCP1700T-5002E/MAY be used as a precision voltage reference?

Yes - the MCP1700T-5002E/MAY delivers ±0.4% typical output voltage accuracy at +25°C and ±3% over –40°C to +125°C, with 50 ppm/°C temperature coefficient. When calibrated at production test, its thermal and line regulation errors become dominant, enabling use as a low-cost, low-power reference for ADCs and sensor biasing in resource-constrained designs.

MCP1700T-5002E/MAY Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 6-VDFN Exposed Pad

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):: 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:: 6-DFN (2x2)

MCP1700T-5002E/MAY FAQ

1.How can I place an order for MCP1700T-5002E/MAY through Aetrix?

Please submit a Request for Quotation (RFQ) for MCP1700T-5002E/MAY 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-5002E/MAY reliable?

The price and inventory of MCP1700T-5002E/MAY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1700T-5002E/MAY is usually 5 days.

3.What payment methods are accepted for MCP1700T-5002E/MAY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1700T-5002E/MAY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MCP1700T-5002E/MAY?

MCP1700T-5002E/MAY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCP1700T-5002E/MAY 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-5002E/MAY?

For technical support, including MCP1700T-5002E/MAY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1700T-5002E/MAY requirements.

6.How does Aetrix verify that MCP1700T-5002E/MAY is sourced from the original manufacturer or authorized distributors?

All MCP1700T-5002E/MAY 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-5002E/MAY meets industry standards.

7.What is the process for return or replacement of MCP1700T-5002E/MAY?

All MCP1700T-5002E/MAY units undergo pre-shipment inspection (PSI). If there is an issue with MCP1700T-5002E/MAY, 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-5002E/MAY part is unused and in its original packaging.

Return procedure for MCP1700T-5002E/MAY:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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