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

Microchip Technology MCP1702T-2202E/CB

Name: MCP1702T-2202E/CB
Brand: Microchip Technology
SKU: MCP1702T-2202E/CB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MCP1702T-2202E/CB

Manufacturer:: Microchip Technology

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

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: MCP1702T-2202E/CB.pdf

Description:: IC REG LIN 2.2V 200MA SOT23A-3

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Product details

Overview

MCP1702T-2202E/CB from Microchip Technology is a 2.2V fixed-output, CMOS low-dropout (LDO) linear voltage regulator in SOT-23A package, delivering up to 250 mA output current with only 2.0 µA typical quiescent current and 625 mV typical dropout voltage at 250 mA (V_OUT = 2.8V). It operates from 2.7V to 13.2V input and maintains ±0.4% typical output voltage tolerance at +25°C - ideal for ultra-low-power battery-powered microcontroller systems.

For engineers reviewing the MCP1702T-2202E/CB datasheet, MCP1702T-2202E/CB pinout, MCP1702T-2202E/CB application, or MCP1702T-2202E/CB equivalent, key selection criteria include micropower operation (<2.5 µA I_Q), stable regulation with 1.0 µF ceramic output capacitor, thermal/short-circuit protection, and compatibility with two-to-six-cell alkaline or single/dual Li-ion battery inputs.

Technical Context

The MCP1702T-2202E/CB uses a P-channel MOSFET pass element controlled by an internal error amplifier referenced to a precision bandgap voltage source. Regulation is achieved via feedback of V_OUT to maintain 2.2V output across load and line variations.

It integrates overtemperature shutdown (trip at ~150°C, restart at ~130°C) and foldback current limiting (~400 mA short-circuit current), enabling robust operation in thermally constrained or fault-prone environments without external protection circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.2V ±3% over -40°C to +125°C junction temperature - enables precise biasing of low-voltage logic and analog circuits.
Quiescent Current	2.0 µA typical at zero load - extends battery life in always-on sensor nodes and smoke detectors.
Max Output Current	250 mA for V_OUT ≥ 2.5V; for 2.2V output, max continuous current is 200 mA - defines usable load range in compact portable designs.
Dropout Voltage	625 mV typical at 250 mA (for 2.8V variant); for 2.2V output, dropout is ≤750 mV at 200 mA - allows operation down to ~2.95V input with full regulation.
Output Capacitor	Stable with 1.0 µF to 22 µF ceramic (X7R) - eliminates need for large tantalum or electrolytic capacitors, reducing board area and cost.
Protection Features	Internal short-circuit current limit and thermal shutdown - prevents latch-up or destruction during transient overloads or poor heatsinking.
PSRR	44 dB at 100 Hz (V_OUT = 1.2V) - suppresses low-frequency supply ripple in noise-sensitive analog front-ends.

Pinout & Package

SOT-23A 3-pin surface-mount package (JEDEC MO-178AA), footprint-compatible with industry-standard SOT-23 layouts. Thermal resistance θ_JA = 336°C/W on FR-4 4-layer board.

Pin	Circuit Role	Design Meaning
1	GND	Regulator ground reference; carries only 2.0 µA bias current - must be connected directly to low-impedance system ground plane near output capacitor negative terminal.
2	V_OUT	Regulated 2.2V output; supplies load current up to 200 mA - requires 1.0 µF ceramic capacitor placed adjacent to pin for stability.
3	V_IN	Unregulated input (2.7–13.2V); connects to battery or DC source - needs local 1.0 µF ceramic decoupling capacitor to ensure low source impedance.

Key Features

Feature	Design Value
Ultra-low quiescent current	2.0 µA typical enables >10-year battery life in coin-cell-powered IoT sensors with 10 µA average system current.
Low-noise regulation	8 µV/√Hz output noise at 1 kHz supports clean power for ADC references and RF front-end biasing.
Wide input voltage range	2.7V to 13.2V accommodates 2–6 alkaline cells or 1–2 Li-ion cells without external pre-regulation.
High accuracy output	±0.4% typical V_OUT tolerance at +25°C reduces calibration overhead in precision measurement systems.
Robust protection	Integrated thermal shutdown and current limiting eliminate need for external fault management circuitry.

Applications

Smart Smoke Detector	Wireless Sensor Node
Use Scenario: Standby operation powered by 9V alkaline battery with periodic smoke sensing and RF wake-up. IC Role / Device Role / Timing Role: Primary 2.2V supply for MCU, CO sensor interface, and sub-GHz transceiver. Use Value: 2.0 µA quiescent current extends battery life beyond 5 years; 1 µF ceramic output capacitor minimizes PCB area in compact enclosure.	Use Scenario: Battery-powered environmental monitor logging temperature/humidity every 10 seconds. IC Role / Device Role / Timing Role: Regulated 2.2V rail for ultra-low-power MCU and analog sensor signal chain. Use Value: Stable 2.2V output ensures consistent ADC reference and sensor biasing; ±0.4% tolerance avoids recalibration in field-deployed units.
CO₂ Detector Module	Medical Wearable Sensor
Use Scenario: Portable NDIR-based CO₂ analyzer using dual-beam optical path and low-power processing. IC Role / Device Role / Timing Role: Precision 2.2V supply for photodetector amplifier and 16-bit sigma-delta ADC. Use Value: 8 µV/√Hz output noise preserves dynamic range; 44 dB PSRR rejects switching noise from nearby DC-DC converters.	Use Scenario: Disposable ECG patch operating from CR2032 coin cell for 72-hour continuous monitoring. IC Role / Device Role / Timing Role: Micropower LDO supplying analog front-end and BLE SoC in sleep-active duty cycle. Use Value: 200 mA capability supports BLE transmit bursts; thermal shutdown prevents overheating during extended use under skin.

Smart Smoke Detector

Wireless Sensor Node

Use Scenario: Standby operation powered by 9V alkaline battery with periodic smoke sensing and RF wake-up.

IC Role / Device Role / Timing Role: Primary 2.2V supply for MCU, CO sensor interface, and sub-GHz transceiver.

Use Value: 2.0 µA quiescent current extends battery life beyond 5 years; 1 µF ceramic output capacitor minimizes PCB area in compact enclosure.

Use Scenario: Battery-powered environmental monitor logging temperature/humidity every 10 seconds.

IC Role / Device Role / Timing Role: Regulated 2.2V rail for ultra-low-power MCU and analog sensor signal chain.

Use Value: Stable 2.2V output ensures consistent ADC reference and sensor biasing; ±0.4% tolerance avoids recalibration in field-deployed units.

CO₂ Detector Module

Medical Wearable Sensor

Use Scenario: Portable NDIR-based CO₂ analyzer using dual-beam optical path and low-power processing.

IC Role / Device Role / Timing Role: Precision 2.2V supply for photodetector amplifier and 16-bit sigma-delta ADC.

Use Value: 8 µV/√Hz output noise preserves dynamic range; 44 dB PSRR rejects switching noise from nearby DC-DC converters.

Use Scenario: Disposable ECG patch operating from CR2032 coin cell for 72-hour continuous monitoring.

IC Role / Device Role / Timing Role: Micropower LDO supplying analog front-end and BLE SoC in sleep-active duty cycle.

Use Value: 200 mA capability supports BLE transmit bursts; thermal shutdown prevents overheating during extended use under skin.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-2202E/TT	SOT-23-3 package, identical 2.2V output and 2.0 µA I_Q, but rated for 150 mA max output (vs. 200 mA for MCP1702T-2202E/CB).	Lower current capability limits use in pulsed-load BLE transmitters or multi-sensor systems requiring >150 mA peak.	Select MCP1700T-2202E/TT only when load current stays below 150 mA and board space constraints favor smaller footprint.
Torex XC6206P222MR-G	2.2V fixed output, 1 µA I_Q, SOT-23-3, but no integrated thermal shutdown and only 100 mA output rating.	Lacks overtemperature protection - unsuitable for sealed enclosures or high ambient temperature deployments.	Prefer XC6206P222MR-G only in cost-sensitive, low-power, thermally benign applications where external thermal monitoring exists.

Compared with MCP1700T-2202E/TT and XC6206P222MR-G, the MCP1702T-2202E/CB delivers higher output current (200 mA), integrated thermal protection, and proven stability with minimal 1 µF ceramic output capacitance - making it optimal for battery-powered safety-critical and industrial sensing applications.

Availability

MCP1702T-2202E/CB is available at Aetrix Electronics and suitable for smart smoke detectors, wireless sensor nodes, CO₂ detector modules, and medical wearable sensors requiring stable component supply with long-term lifecycle support.

Supply support for MCP1702T-2202E/CB 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 power management ICs, serving automotive, industrial, and consumer markets with high-reliability silicon solutions.

The MCP1702 series was designed specifically for micropower, battery-critical applications - emphasizing ultra-low quiescent current, wide input range, and robust protection in miniature packages for space-constrained portable electronics.

FAQ

What is the maximum continuous output current for MCP1702T-2202E/CB?

The MCP1702T-2202E/CB supports up to 200 mA continuous output current when regulating to 2.2V. This is specified in the Electrical Characteristics table under "Maximum Output Current" for output voltages < 2.5V. At 25°C and VIN ≥ 3.45V, the device delivers 200 mA while maintaining regulation within tolerance. Exceeding this current may trigger thermal shutdown or degrade output accuracy.

Does MCP1702T-2202E/CB require an input capacitor?

Yes, MCP1702T-2202E/CB requires a minimum 1.0 µF ceramic input capacitor (X7R) placed close to the VIN pin. The datasheet states that low source impedance is essential for stability, and 1 µF is sufficient for most applications up to 100 mA. For higher loads or noisy sources, larger values improve PSRR and transient response - but the device remains stable without it only under ideal lab conditions.

Can MCP1702T-2202E/CB be used as a voltage reference?

Yes, MCP1702T-2202E/CB is explicitly qualified for voltage reference use per Microchip AN765 and DS22008E Section 6.4. Its 2.2V output, ±0.4% typical tolerance at +25°C, and 50 ppm/°C temperature coefficient enable accurate ratio-metric measurements in microcontroller ADC systems - especially when initial offset is calibrated during production test.

What is the thermal shutdown behavior of MCP1702T-2202E/CB?

MCP1702T-2202E/CB activates thermal shutdown at approximately 150°C junction temperature and resumes operation once the junction cools to ~130°C. This hysteresis prevents oscillation during thermal stress. The SOT-23A package has θ_JA = 336°C/W, so sustained 200 mA loads at high VIN require careful PCB copper layout or derating - confirmed by Equation 6-2 in DS22008E.

Is MCP1702T-2202E/CB stable with ceramic output capacitors?

Yes, MCP1702T-2202E/CB is fully stable with 1.0 µF to 22 µF X7R ceramic output capacitors, as verified in DS22008E Section 5.2 and Figure 2-10 through 2-12. Unlike older LDOs, it does not require ESR damping - enabling small, low-cost, high-reliability ceramic solutions instead of tantalum or aluminum electrolytics.

MCP1702T-2202E/CB Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 13.2V

Voltage - Output (Min/Fixed):: 2.2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: -

Current - Output:: 200mA

Current - Quiescent (Iq):: 5 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-23A-3

MCP1702T-2202E/CB FAQ

1.How can I place an order for MCP1702T-2202E/CB through Aetrix?

Please submit a Request for Quotation (RFQ) for MCP1702T-2202E/CB 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 MCP1702T-2202E/CB reliable?

The price and inventory of MCP1702T-2202E/CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1702T-2202E/CB is usually 5 days.

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MCP1702T-2202E/CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCP1702T-2202E/CB 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 MCP1702T-2202E/CB?

For technical support, including MCP1702T-2202E/CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1702T-2202E/CB requirements.

6.How does Aetrix verify that MCP1702T-2202E/CB is sourced from the original manufacturer or authorized distributors?

All MCP1702T-2202E/CB 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 MCP1702T-2202E/CB meets industry standards.

7.What is the process for return or replacement of MCP1702T-2202E/CB?

All MCP1702T-2202E/CB units undergo pre-shipment inspection (PSI). If there is an issue with MCP1702T-2202E/CB, 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 MCP1702T-2202E/CB part is unused and in its original packaging.

Return procedure for MCP1702T-2202E/CB:

1.Submit a request within 90 days.

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

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