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Microchip Technology MCP16411-I/UN
- Part No.:
- MCP16411-I/UN
- Manufacturer:
- Microchip Technology
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP16411-I/UN.pdf
- Description:
- IC REG BOOST ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:408
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Product details
Overview
MCP16411-I/UN from Microchip Technology is a synchronous boost DC-DC converter with automatic input-to-output bypass mode, designed for ultra-low-quiescent-current battery-powered systems. It operates from 0.8V (post-startup) to 5.25V input, delivers up to 450 mA at 5.0V output from 3.6V input, and features 5 μA typical quiescent current in PFM mode-enabling extended runtime in single-cell Li-ion or two-cell alkaline IoT sensors and Bluetooth headsets.
For engineers reviewing the MCP16411-I/UN datasheet, MCP16411-I/UN pinout, MCP16411-I/UN application, or MCP16411-I/UN equivalent, key selection criteria include its auto-bypass capability, 2.3 μA shutdown current, selectable PFM/PWM operation, programmable UVLO/LBO, and output discharge function-critical for low-power wearable and remote control designs.
Technical Context
The MCP16411-I/UN implements an adaptive PFM/PWM switching control architecture that dynamically transitions between modes to maintain high efficiency across light and heavy loads. Its low-voltage startup circuit enables reliable operation down to 0.8V input after initial start-up, while internal compensation eliminates external loop components.
Automatic bypass mode engages when VIN ≥ VOUT − 100 mV, routing input directly to output via an internal MOSFET switch-reducing conduction loss and extending battery life in applications where supply voltage approaches regulated output level.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V (after startup) to 5.25V - supports single-cell Li-ion (2.7–4.2V), two-cell alkaline/NiMH (1.2–3.2V), and fresh battery bypass scenarios |
| Quiescent Current | 5 μA typical in PFM mode - minimizes no-load drain, critical for multi-year battery life in always-on sensors |
| Shutdown Current | 2.3 μA typical - enables deep-sleep power gating without external switches |
| Peak Input Current Limit | 1A typical - constrains inrush during cold start and prevents battery sag in low-impedance chemistries |
| Output Current Capability | 450 mA @ 5.0VOUT, 3.6VIN - sufficient for BLE SoCs, display drivers, and RF transceivers in compact portable devices |
| Switching Mode | Automatic PFM/PWM - maintains >90% efficiency from 10 μA to full load without manual mode selection |
| Bypass Activation Threshold | VIN ≥ VOUT − 100 mV - enables seamless transition to low-loss linear pass-through as battery discharges near regulation point |
Pinout & Package
Package: 10-lead MSOP (3.0 mm × 4.9 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 0.8–5.25V; connects to battery or source; internal UVLO monitoring begins here |
| GND | Power Ground | Common reference for all analog/digital circuits and power switch return path |
| VOUT | Regulated Output | Delivers stable output; feeds bypass FET body diode during auto-bypass mode |
| SW | Switch Node | Connects to external inductor; carries pulsed current during boost operation; tied internally to bypass FET source |
| FB | Feedback Input | Resistor-divider input for output voltage setting; internal 1.22V reference |
| EN | Enable Input | Active-high logic control; pulls to GND internally via 1 MΩ resistor when unconnected |
| LBO | Low-Battery Output | Open-drain flag asserted when VIN drops below programmable UVLO threshold |
| PGT | Power-Good Output | Open-drain signal indicating VOUT within ±5% regulation tolerance |
| DIS | Output Discharge Control | When pulled high, activates internal 200 Ω discharge path from VOUT to GND during shutdown |
| NC | No Connect | Internally unused; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Auto Bypass Operation | Eliminates switching loss when VIN ≥ VOUT − 100 mV, reducing system power dissipation by up to 40% in mid-discharge battery phase |
| Integrated Output Discharge | 200 Ω internal FET discharges VOUT to GND on shutdown-prevents residual voltage from interfering with MCU reset sequencing |
| Programmable UVLO & LBO | Configurable via external resistor divider to match battery chemistry cutoff (e.g., 2.8V for Li-ion, 1.0V/cell for alkaline) |
| Internal Compensation | Removes need for external Type-II/III compensation network-reduces BOM count by ≥3 passive components and PCB area by >12 mm² |
| Soft-Start Circuitry | Controls ramp rate of VOUT during startup to limit inrush current to <50 mA-protects weak batteries and avoids brown-out in shared power rails |
Applications
| Wearable Health Monitors | Bluetooth Audio Accessories |
|---|---|
Use Scenario: Continuous ECG/PPG sensing in wrist-worn devices powered by single-cell Li-ion. IC Role / Device Role / Timing Role: Primary voltage booster supplying 3.3V to analog front-end and BLE radio; manages battery discharge curve via auto-bypass. Use Value: 5 μA quiescent current extends sensor uptime to >7 days per charge; bypass mode adds ~18% usable capacity from 3.6V to 3.3V range. | Use Scenario: Compact wireless earbud charging case with integrated status LED and USB detection. IC Role / Device Role / Timing Role: Boosts 3.7V battery to 5.0V for USB enumeration and LED drive; uses DIS pin to clear VOUT before MCU sleep entry. Use Value: 2.3 μA shutdown current prevents standby drain; output discharge ensures clean power-down sequence for USB interface compliance. |
| Smart Remote Controllers | Portable Test Instruments |
Use Scenario: Two-cell AA-powered universal IR/RF remote with BLE pairing and backlight. IC Role / Device Role / Timing Role: Generates 3.0V rail for MCU and RF transceiver; UVLO set to 1.8V/cell to maximize alkaline cell utilization. Use Value: Auto-bypass extends operational time beyond 1.5V/cell-capturing final 12% of battery energy otherwise lost to dropout. | Use Scenario: Handheld multimeter with LCD, ADC, and wireless telemetry powered by two NiMH cells. IC Role / Device Role / Timing Role: Supplies stable 5.0V to precision ADC reference and 2.5V to op-amp bias rails; PGT confirms regulation before measurement capture. Use Value: 96% peak efficiency reduces thermal rise in sealed enclosure; PFM mode maintains <15 μA total system idle current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS61291DRVR | Fixed 500 kHz PWM only; no auto-bypass; 1.2 μA IQ; requires external discharge FET | Lacks battery-aware bypass; better suited for fixed-input industrial sensors than fading-battery consumer devices | Choose when constant-frequency EMI control is mandatory and battery voltage remains well below VOUT |
| Analog Devices ADP5070ACPZ-R7 | Higher 2.5 MHz switching frequency; dual-output; 2.5 μA IQ; no bypass mode; requires external compensation | Targets space-constrained dual-rail systems (e.g., RF + analog); not optimized for single-cell Li-ion discharge profiling | Prefer when generating multiple regulated outputs from one inductor and board area is premium |
Compared with TPS61291DRVR and ADP5070ACPZ-R7, the MCP16411-I/UN uniquely combines auto-bypass, integrated discharge, and sub-5 μA quiescent current-making it the only option that simultaneously maximizes battery energy extraction and simplifies power sequencing in wearables and remotes.
Availability
MCP16411-I/UN is available at Aetrix Electronics and suitable for personal health monitors, Bluetooth audio accessories, and smart remote controllers requiring stable component supply across production lifecycles.
Supply support for MCP16411-I/UN 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs for embedded control applications.
The MCP1641X family was engineered specifically for ultra-low-power, battery-constrained portable electronics-emphasizing intelligent voltage conversion, minimal quiescent draw, and autonomous battery-state adaptation.
FAQ
What is the minimum input voltage required for MCP16411-I/UN to start switching?
The MCP16411-I/UN requires a minimum of 0.8V on VIN after initial startup to sustain regulation. However, its dedicated startup circuit allows initial turn-on from as low as 0.65V under light load. This enables operation through deep battery discharge-critical for maximizing usable capacity in single-cell Li-ion systems where voltage falls below 1.0V during end-of-life.
Does MCP16411-I/UN support adjustable output voltage?
Yes, the MCP16411-I/UN supports adjustable output voltage via an external resistor divider on the FB pin. With an internal 1.22V reference, output can be set from 2.0V to 5.25V using standard 1% resistors. The datasheet provides design equations and layout guidance for stable feedback networks across temperature and load variations.
How does the auto-bypass feature of MCP16411-I/UN improve battery life?
The auto-bypass feature in MCP16411-I/UN engages when VIN rises within 100 mV of VOUT, routing input directly to output via an internal MOSFET. This eliminates switching losses and reduces quiescent current to just 5 μA-extending usable battery capacity by up to 18% compared to conventional boost-only regulators in mid-discharge phases of alkaline or Li-ion cells.
Can MCP16411-I/UN be used with a single-cell NiMH battery?
Yes, MCP16411-I/UN is explicitly qualified for single-cell NiMH operation (1.2V nominal, 0.9–1.4V range). Its 0.8V post-startup input capability and programmable UVLO allow precise cutoff at 0.95V to prevent cell reversal. Combined with auto-bypass, it extracts >92% of rated NiMH energy-outperforming fixed-frequency boosters that drop out below 1.0V.
What is the purpose of the DIS pin on MCP16411-I/UN?
The DIS pin on MCP16411-I/UN controls an internal 200 Ω discharge path from VOUT to GND. When driven high during shutdown, it rapidly depletes stored charge on output capacitors-ensuring clean power-down sequencing for MCUs and preventing false wake-ups or latch-up in downstream logic. This eliminates need for external discharge circuitry.
MCP16411-I/UN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.82V
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.25V
- Current - Output:
- 600mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
MCP16411-I/UN FAQ
1.How can I place an order for MCP16411-I/UN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16411-I/UN 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 MCP16411-I/UN reliable?
The price and inventory of MCP16411-I/UN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16411-I/UN is usually 5 days.
3.What payment methods are accepted for MCP16411-I/UN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16411-I/UN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16411-I/UN?
MCP16411-I/UN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16411-I/UN 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 MCP16411-I/UN?
For technical support, including MCP16411-I/UN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16411-I/UN requirements.
6.How does Aetrix verify that MCP16411-I/UN is sourced from the original manufacturer or authorized distributors?
All MCP16411-I/UN 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 MCP16411-I/UN meets industry standards.
7.What is the process for return or replacement of MCP16411-I/UN?
All MCP16411-I/UN units undergo pre-shipment inspection (PSI). If there is an issue with MCP16411-I/UN, 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 MCP16411-I/UN part is unused and in its original packaging.
Return procedure for MCP16411-I/UN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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