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Microchip Technology MCP1711T-12I/5X
- Part No.:
- MCP1711T-12I/5X
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
MCP1711T-12I/5X.pdf
- Description:
- IC REG LINEAR 1.2V 150MA 4UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,863
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Product details
Overview
MCP1711T-12I/5X from Microchip Technology is a 1.2V, 150 mA ultra-low-quiescent-current CMOS LDO voltage regulator in a 5-lead SOT-23 package, featuring 600 nA typical quiescent current, ±20 mV output accuracy at 1.2V, and capacitorless operation. It delivers stable regulation for energy harvesting nodes, battery-powered wireless modules, and portable electronics operating from single-cell Li-ion or coin-cell sources.
For engineers reviewing the MCP1711T-12I/5X datasheet, MCP1711T-12I/5X pinout, MCP1711T-12I/5X application, or MCP1711T-12I/5X equivalent, this page provides verified electrical specifications, thermal performance data, shutdown behavior, dropout characteristics across load and temperature, and real-world design guidance for ultra-low-power systems.
Technical Context
The MCP1711T-12I/5X implements a PMOS pass transistor architecture with internal error amplifier, current foldback protection, and dedicated SHDN-controlled discharge transistor. Its 1.4V–6.0V input range supports direct connection to one-cell Li-ion (2.7–4.2V), alkaline (0.9–1.5V × 2), or harvested energy sources.
It achieves 1.41V typical dropout at 150 mA output for 1.2V regulation and maintains ±50 ppm/°C temperature stability over –40°C to +85°C. The true current foldback feature limits short-circuit current to ~80 mA while driving output toward 0V, enabling robust fault recovery without thermal shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.2V ±20 mV (±1.67% absolute) at +25°C - ensures precise biasing for low-voltage MCUs and RF ICs |
| Quiescent Current | 600 nA typical - enables multi-year battery life in always-on sensor nodes drawing <1 µA average |
| Max Output Current | 150 mA - sufficient to power BLE SoCs, low-power displays, or sensor signal chains |
| Dropout Voltage | 1.41V typical at 150 mA - allows operation down to 2.61V input for 1.2V output, compatible with aging coin cells |
| Shutdown Current | 10 nA typical - reduces system standby power to negligible levels during deep sleep modes |
| Thermal Stability | ±50 ppm/°C - guarantees <±0.5% output drift over full industrial temperature range |
| ESR Tolerance | Capacitorless stable - eliminates need for external output capacitor; optional low-ESR ceramic improves transient response |
Pinout & Package
Package: 5-Lead SOT-23 (JEDEC MO-178AA), 2.9 mm × 1.6 mm × 1.1 mm body, exposed pad not present (non-UQFN variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Unregulated Input Supply | Accepts 1.4V–6.0V; requires ≥0.1 µF ceramic input capacitor for stability under transients |
| 2 (VOUT) | Regulated Output | Delivers 1.2V ±20 mV; stable without output capacitor; supports optional 0.1–10 µF ceramic for improved PSRR |
| 3 (SHDN) | Active-High Enable Control | Logic high (>0.91V) enables regulator; logic low (<0.38V) disables output and activates internal COUT discharge path |
| 4 (GND) | Ground Reference | Regulator return path; must be connected directly to PCB ground plane or low-impedance trace to minimize noise coupling |
| 5 (NC) | No Connect | Internally unconnected; left floating or tied to GND per layout best practice - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 600 nA quiescent current enables >10-year battery life in 20 µAh coin-cell applications |
| True capacitorless operation | Stable without output capacitor - reduces BOM count and board area in space-constrained wearables |
| Integrated COUT discharge | Internal 450 Ω (typ.) discharge path pulls VOUT to 0V within microseconds of SHDN assertion |
| Current foldback protection | Reduces short-circuit current to ~80 mA at near-0V output - prevents thermal runaway during faults |
| Wide input range | 1.4V minimum input supports direct connection to single NiMH/alkaline cells or energy harvesters |
Applications
| Wireless Sensor Node | Energy Harvesting System |
|---|---|
|
Use Scenario: Sub-1µA wake-up sensor node transmitting BLE beacon packets every 5 minutes using a CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 1.2V supply for ultra-low-power MCU and RF transceiver during active and sleep states. Use Value: 600 nA IQ extends CR2032 lifetime beyond 12 years; capacitorless operation minimizes footprint on 8 mm × 8 mm PCB. |
Use Scenario: Indoor light-harvesting module powering environmental sensors using amorphous silicon photodiodes. IC Role / Device Role / Timing Role: Regulates variable 1.6–4.5V harvester output to stable 1.2V for analog front-end and ADC reference. Use Value: 1.4V minimum input enables regulation even at dim-light conditions; ±20 mV accuracy ensures consistent sensor readings. |
| Portable Medical Wearable | Low-Power IoT Module |
|
Use Scenario: ECG patch with continuous analog sensing and periodic Bluetooth Low Energy transmission. IC Role / Device Role / Timing Role: Supplies 1.2V to precision analog signal chain and digital logic, synchronized with MCU sleep/wake cycles. Use Value: 10 nA shutdown current eliminates leakage during 99.9% sleep time; fast start-up (<50 µs) ensures timely ADC sampling. |
Use Scenario: Cellular IoT module (LTE-M/NB-IoT) operating intermittently on lithium-thionyl chloride primary cell. IC Role / Device Role / Timing Role: Provides clean 1.2V rail to modem baseband and memory during burst transmissions. Use Value: 150 mA peak current supports modem transmit bursts; ±50 ppm/°C stability maintains timing accuracy across outdoor temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B122MR-G | 1.2V fixed, 150 mA, 1.0 µA IQ, SOT-23-5, no COUT discharge | Lacks integrated output capacitor discharge; requires external circuitry for rapid VOUT ramp-down | Choose when lowest possible cost is prioritized and discharge timing is non-critical |
| Ricoh RP111N121D-TR-F | 1.2V fixed, 150 mA, 500 nA IQ, SOT-23-5, 1.2V shutdown threshold | Lower IQ but tighter SHDN threshold (1.2V vs. MCP1711's 0.91V min); no foldback protection | Prefer for systems with marginal input voltage headroom where lower shutdown threshold improves margin |
Compared with XC6210B122MR-G and RP111N121D-TR-F, the MCP1711T-12I/5X uniquely combines capacitorless stability, integrated COUT discharge, and current foldback - critical for energy-constrained systems requiring fast state transitions and fault resilience without added components.
Availability
MCP1711T-12I/5X is available at Aetrix Electronics and suitable for energy harvesting nodes, battery-powered wireless modules, and portable medical wearables requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MCP1711T-12I/5X 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 semiconductor products.
The MCP1711 product line delivers ultra-low-power LDO regulators optimized for battery longevity and capacitorless deployment in space- and energy-constrained edge devices - targeting applications where every nanoamp and square millimeter matters.
FAQ
What is the minimum input voltage required for the MCP1711T-12I/5X to regulate 1.2V output?
The MCP1711T-12I/5X specifies a minimum input voltage of 1.4V for guaranteed regulation. At 150 mA load, its typical dropout is 1.41V - meaning it requires at least 2.61V input to sustain 1.2V output. For light loads (<1 mA), regulation begins reliably at VIN ≥ 1.4V, making it suitable for single NiMH or alkaline cells.
Does the MCP1711T-12I/5X require an output capacitor to remain stable?
No - the MCP1711T-12I/5X is internally compensated for capacitorless operation and remains stable with zero output capacitance. An optional 0.1–10 µF ceramic capacitor can be added to improve PSRR and transient response, but it is not required for stability, reducing BOM cost and PCB area.
How does the SHDN pin function on the MCP1711T-12I/5X, and what happens to VOUT when disabled?
The SHDN pin is active-high: logic high (>0.91V) enables regulation; logic low (<0.38V) disables the LDO and activates an internal discharge transistor. When disabled, the MCP1711T-12I/5X pulls VOUT to 0V through a 450 Ω (typ.) path, achieving full discharge in <100 µs for applications requiring rapid rail collapse.
What is the output voltage accuracy of the MCP1711T-12I/5X across temperature and load?
The MCP1711T-12I/5X guarantees ±20 mV output accuracy at 1.2V over temperature (–40°C to +85°C) and load (1 µA to 150 mA). This corresponds to ±1.67% absolute accuracy - tighter than standard ±1% LDOs - ensuring reliable operation for precision analog circuits and low-voltage logic.
Can the MCP1711T-12I/5X be used with a single AA alkaline battery?
Yes - the MCP1711T-12I/5X supports input voltages from 1.4V to 6.0V, matching the discharge curve of a single AA alkaline cell (1.5V fresh → ~0.9V end-of-life). Its 1.4V minimum input allows regulation until the cell reaches ~1.0V under light load, maximizing usable battery capacity in low-power designs.
MCP1711T-12I/5X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-UDFN 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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.93V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1.27 µA
- Current - Supply (Max):
- 1.8 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-UQFN (1x1)
MCP1711T-12I/5X FAQ
1.How can I place an order for MCP1711T-12I/5X through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1711T-12I/5X 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 MCP1711T-12I/5X reliable?
The price and inventory of MCP1711T-12I/5X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1711T-12I/5X is usually 5 days.
3.What payment methods are accepted for MCP1711T-12I/5X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1711T-12I/5X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1711T-12I/5X?
MCP1711T-12I/5X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1711T-12I/5X 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 MCP1711T-12I/5X?
For technical support, including MCP1711T-12I/5X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1711T-12I/5X requirements.
6.How does Aetrix verify that MCP1711T-12I/5X is sourced from the original manufacturer or authorized distributors?
All MCP1711T-12I/5X 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 MCP1711T-12I/5X meets industry standards.
7.What is the process for return or replacement of MCP1711T-12I/5X?
All MCP1711T-12I/5X units undergo pre-shipment inspection (PSI). If there is an issue with MCP1711T-12I/5X, 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 MCP1711T-12I/5X part is unused and in its original packaging.
Return procedure for MCP1711T-12I/5X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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