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Microchip Technology MCP1702T-2302E/CB
- Part No.:
- MCP1702T-2302E/CB
- Manufacturer:
- Microchip Technology
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MCP1702T-2302E/CB.pdf
- Description:
- IC REG LIN 2.3V 200MA SOT23A-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,845
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Product details
Overview
MCP1702T-2302E/CB from Microchip Technology is a CMOS low-dropout (LDO) voltage regulator delivering 250 mA output current at 2.3 V nominal output, with 2.0 µA quiescent current and 625 mV typical dropout voltage at 250 mA (VOUT = 2.8 V). It operates across 2.7–13.2 V input range and maintains ±0.4% output voltage tolerance at +25°C, targeting ultra-low-power battery-powered microcontroller power rails.
For engineers reviewing the MCP1702T-2302E/CB datasheet, MCP1702T-2302E/CB pinout, MCP1702T-2302E/CB application, or MCP1702T-2302E/CB equivalent, key selection criteria include guaranteed 250 mA delivery at ≥2.5 V output, SOT-23A package thermal resistance (336°C/W), stability with 1.0–22 µF ceramic output capacitors, and integrated short-circuit/overtemperature protection.
Technical Context
The MCP1702T-2302E/CB employs a P-channel MOSFET pass element controlled by an internal error amplifier comparing feedback against a precision bandgap reference. Its regulation loop ensures stable output under load transients up to 250 mA and input variations from 2.7 V to 13.2 V.
Protection circuitry includes foldback current limiting (typical 400 mA short-circuit current) and thermal shutdown activating at 150°C junction temperature, with automatic recovery at ~130°C. The device achieves 44 dB PSRR at 100 Hz and 8 µV/√Hz output noise at 1 kHz with 50 mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.3 V nominal - fixed output for low-voltage logic rails requiring precise biasing without external resistors. |
| Max Output Current | 250 mA @ VOUT ≥ 2.5 V - supports moderate-current MCU cores, sensors, and RF modules in portable systems. |
| Quiescent Current | 2.0 µA typical - enables multi-year operation from coin cells or primary alkaline batteries in always-on monitoring devices. |
| Dropout Voltage | 625 mV typical @ 250 mA (VOUT = 2.8 V) - allows operation from two AA/AAA cells down to ~2.9 V while sustaining full load. |
| Output Tolerance | ±0.4% typical at +25°C - ensures accurate ADC reference and digital I/O voltage compliance without calibration overhead. |
| Stable Capacitance | 1.0–22 µF ceramic - eliminates need for tantalum or electrolytic capacitors, reducing BOM cost and board area. |
| Thermal Shutdown | 150°C activation - protects against sustained overload or poor PCB heatsinking in sealed enclosures. |
Pinout & Package
Package: 3-pin SOT-23A - surface-mount, 2.9 mm × 1.6 mm footprint with exposed pad not electrically connected; suitable for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | Low-current return path for internal bias only; must be tied directly to load ground plane to avoid regulation error from IR drop. |
| 2 (VOUT) | Regulated Output | Delivers 2.3 V to load; requires 1 µF ceramic capacitor placed <1 mm from pin to suppress high-frequency noise and ensure stability. |
| 3 (VIN) | Unregulated Input | Accepts 2.7–13.2 V supply; needs local 1 µF ceramic decoupling within 2 mm to maintain low source impedance and prevent oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2.0 µA typical enables >10-year shelf life in smoke detectors powered by lithium thionyl chloride cells. |
| Wide input voltage range | 2.7–13.2 V accommodates 2–6 alkaline cells or single/dual Li-ion configurations without external pre-regulation. |
| Robust protection suite | Integrated short-circuit foldback and thermal shutdown eliminate need for external fuses or thermal sensors in space-constrained designs. |
| Capacitor flexibility | Stable with 1–22 µF ceramic output capacitors - avoids aging, leakage, and ESR drift issues of electrolytics in long-life applications. |
| Precision output tolerance | ±0.4% at +25°C reduces system-level calibration burden for analog sensor front-ends and reference-dependent ADCs. |
Applications
| Battery-Powered Smoke Detectors | Smart Battery Packs |
|---|---|
Use Scenario: Continuous 24/7 monitoring with periodic self-test pulses in residential fire alarm units. IC Role / Device Role / Timing Role: Primary 2.3 V power rail for MCU, CO sensor interface, and audible alarm driver. Use Value: 2.0 µA quiescent current extends 10-year lithium primary cell life; 250 mA peak supports piezo buzzer activation without brownout. | Use Scenario: Power management in multi-cell Li-ion packs with embedded fuel gauging and protection ICs. IC Role / Device Role / Timing Role: Dedicated 2.3 V supply for gas gauge microcontroller and EEPROM data logging. Use Value: ±0.4% output tolerance ensures accurate voltage-based state-of-charge calculation; 1 µF ceramic stability simplifies layout in tight pack cavities. |
| Microcontroller Power Rails | Solar-Powered Environmental Sensors |
Use Scenario: Low-power wake-up/sleep cycling in industrial IoT edge nodes using ARM Cortex-M0+ MCUs. IC Role / Device Role / Timing Role: Core VDD regulator for MCU, BLE radio, and analog peripherals during active bursts. Use Value: 625 mV dropout at 250 mA allows direct operation from 3.3 V solar harvester outputs, minimizing energy loss during low-light conditions. | Use Scenario: Multi-year deployment of wireless soil moisture and temperature loggers in remote agricultural fields. IC Role / Device Role / Timing Role: Main 2.3 V supply for ultra-low-power MCU, LoRa transceiver, and capacitive sensing front-end. Use Value: Stable regulation with 1 µF ceramic capacitor withstands wide temperature swings (-40°C to +85°C); 2.0 µA IQ enables operation on small supercapacitors charged by miniature solar panels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2302E/CB | Same 2.3 V output and SOT-23A package, but 3.5 µA quiescent current (vs. 2.0 µA) and 300 mA max output. | Higher IQ reduces battery life in decade-scale deployments; higher current rating unnecessary for 250 mA-limited loads. | Select MCP1702T-2302E/CB when maximizing battery longevity is critical and 250 mA suffices. |
| Torex XC6206P232MR-G | 2.3 V fixed output, 1 µA IQ, but only 150 mA output current and 1.0 V minimum input voltage. | Limited to lighter loads; lower IQ benefits extreme ultra-low-power use cases, but insufficient for 250 mA MCU bursts. | Choose XC6206P232MR-G only if load current stays ≤150 mA and sub-2 µA IQ justifies reduced drive capability. |
Compared with MCP1703T-2302E/CB, the MCP1702T-2302E/CB delivers identical 2.3 V regulation with 43% lower quiescent current-critical for 10+ year battery life-while matching required 250 mA output. Against XC6206P232MR-G, it provides 67% higher current headroom at the cost of 1 µA higher IQ, making it the optimal balance for mid-power, long-life sensor nodes.
Availability
MCP1702T-2302E/CB is available at Aetrix Electronics and suitable for battery-powered smoke detectors, smart battery packs, and microcontroller power rails requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MCP1702T-2302E/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 Flash-IP solutions, headquartered in Chandler, Arizona.
The MCP1702 product line delivers micropower LDO regulators optimized for battery longevity in safety-critical and remote-sensing applications, emphasizing ultra-low IQ, wide input range, and robust protection.
FAQ
What is the exact output voltage tolerance of the MCP1702T-2302E/CB over temperature?
The MCP1702T-2302E/CB has ±0.4% typical output voltage tolerance at +25°C and ±3% maximum over the full operating junction temperature range of -40°C to +125°C. This specification ensures reliable logic-level compatibility and ADC reference accuracy across automotive and industrial environments without recalibration.
Can the MCP1702T-2302E/CB operate from a single Li-ion cell?
No-the MCP1702T-2302E/CB requires a minimum input voltage of 2.7 V, while a single Li-ion cell discharges down to 2.5 V. It is designed for two alkaline cells (2.4–3.2 V), two Li-ion cells (6–8.4 V), or 9 V alkaline batteries-not single-cell Li-ion systems.
Does the MCP1702T-2302E/CB require an input capacitor?
Yes-a minimum 1 µF ceramic capacitor is required at the VIN pin, placed within 2 mm of the package, to ensure stability and low source impedance. Without it, the MCP1702T-2302E/CB may oscillate or fail to regulate under dynamic load conditions.
What is the thermal resistance (θJA) of the MCP1702T-2302E/CB in its SOT-23A package?
The MCP1702T-2302E/CB in SOT-23A has a thermal resistance θJA of 336°C/W on a standard FR-4 4-layer board per JESD51-7. This value assumes minimal copper pour; adding thermal vias and 1-in² copper area can reduce θJA by up to 40%, improving power handling in high-ambient environments.
Is the MCP1702T-2302E/CB stable with a 22 µF ceramic output capacitor?
Yes-the MCP1702T-2302E/CB is explicitly characterized and guaranteed stable with 1.0–22 µF ceramic output capacitors. Larger values shift the pole inward, lowering crossover frequency; stability should be verified via load-step testing when exceeding 22 µF, especially with tantalum or electrolytic types.
MCP1702T-2302E/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):
- 2.3V
- 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-2302E/CB FAQ
1.How can I place an order for MCP1702T-2302E/CB through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1702T-2302E/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-2302E/CB reliable?
The price and inventory of MCP1702T-2302E/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-2302E/CB is usually 5 days.
3.What payment methods are accepted for MCP1702T-2302E/CB?
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MCP1702T-2302E/CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1702T-2302E/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-2302E/CB?
For technical support, including MCP1702T-2302E/CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1702T-2302E/CB requirements.
6.How does Aetrix verify that MCP1702T-2302E/CB is sourced from the original manufacturer or authorized distributors?
All MCP1702T-2302E/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-2302E/CB meets industry standards.
7.What is the process for return or replacement of MCP1702T-2302E/CB?
All MCP1702T-2302E/CB units undergo pre-shipment inspection (PSI). If there is an issue with MCP1702T-2302E/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-2302E/CB part is unused and in its original packaging.
Return procedure for MCP1702T-2302E/CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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