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Microchip Technology MCP16418-I/UN
- Part No.:
- MCP16418-I/UN
- Manufacturer:
- Microchip Technology
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP16418-I/UN.pdf
- Description:
- IC REG BOOST ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,893
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Product details
Overview
MCP16418-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 to 5.25V input, delivers up to 450 mA at 5.0V output from 3.6V input, features 5 μA typical quiescent current in PFM mode, and supports 500 kHz PWM switching - ideal for Bluetooth® headsets and single-cell Li-ion IoT sensors.
For engineers reviewing the MCP16418-I/UN datasheet, MCP16418-I/UN pinout, MCP16418-I/UN application, or MCP16418-I/UN equivalent, key selection criteria include its auto-bypass capability, 2.3 μA shutdown current, selectable PWM-only operation, integrated UVLO/LBO, and compatibility with MSOP-10 and TDFN 3×3 mm packages.
Technical Context
The MCP16418-I/UN implements a fixed-frequency 500 kHz PWM control architecture with synchronous rectification, enabling high efficiency across light-to-moderate loads. Its low-voltage startup circuit allows reliable operation down to 0.8V post-startup, and the internal compensation eliminates external loop components.
Automatic bypass mode engages when VIN ≥ VOUT − 100 mV, routing input directly to output via an internal MOSFET path - reducing conduction loss and extending usable battery range in single-cell Li-ion (3.0–4.2V) and two-cell alkaline/NiMH applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V (post-startup) to 5.25V - enables direct operation from depleted single-cell alkaline (0.9V) or fresh Li-ion (4.2V) |
| Output Current Capability | 450 mA @ 5.0VOUT, 3.6VIN - sufficient to power BLE SoCs and RF transceivers without external LDO |
| Quiescent Current | 5 μA typical in PFM mode - minimizes no-load battery drain in always-on sensor nodes |
| Switching Frequency | 500 kHz fixed PWM - allows compact 1.0–2.2 μH inductors and reduces EMI filtering burden |
| Bypass Threshold | Auto-engages when VIN ≥ VOUT − 100 mV - extends runtime by eliminating switching loss near battery end-of-discharge |
| Shutdown Current | 2.3 μA typical - critical for remote controllers requiring multi-year shelf life |
| UVLO & LBO | Programmable via external resistor divider - enables precise low-battery detection and graceful system shutdown |
Pinout & Package
Package: 10-lead MSOP (3.0 mm × 4.9 mm) and 10-lead 3 mm × 3 mm TDFN - both RoHS-compliant, thermally enhanced, and suitable for space-constrained wearables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 0.8–5.25V; powers internal bias circuits and switch driver |
| VOUT | Regulated output node | Delivers stable output; connects to output capacitor and load |
| SW | Switch node | Connects to inductor and internal high-side/low-side MOSFETs; carries pulsed current |
| FB | Feedback input | Sets output voltage via external resistor divider; enables adjustable VOUT configurations |
| EN | Enable control input | Active-high logic input; controls device startup/shutdown and bypass mode entry |
| LBO | Low battery open-drain output | Asserts low when input drops below programmable threshold - signals host MCU for battery management |
| UVLO | Undervoltage lockout adjust | Resistor-connected pin to set custom startup voltage - prevents erratic operation during brown-out |
| GND | Power and signal ground | Common reference for all analog/digital functions; requires low-impedance PCB plane |
| PGT | Power good indicator | Open-drain output asserting high when VOUT is within ±5% regulation - used for system sequencing |
| NC | No connect | Internally unused pin; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Auto input-to-output bypass | Eliminates switching loss when VIN approaches VOUT, extending usable battery capacity by up to 18% in single-cell Li-ion discharge profiles |
| 500 kHz fixed PWM mode | Enables use of small, low-DCR inductors (e.g., 1.5 μH) while maintaining >90% efficiency at 100–400 mA loads |
| 5 μA quiescent current (PFM) | Reduces no-load current draw to <1% of typical coin-cell self-discharge rate - critical for multi-year remote controls |
| Programmable UVLO & LBO | Allows precise battery voltage monitoring using one external resistor divider - avoids premature shutdown or deep discharge damage |
| 2.3 μA shutdown current | Supports ultra-low-power wake-on-event architectures where the regulator remains off >99.9% of system uptime |
Applications
| Bluetooth® Headsets | Remote Controllers |
|---|---|
Use Scenario: Compact wireless audio devices powered by single-cell Li-ion (3.0–4.2V) requiring regulated 3.3V/5.0V for codec and radio. IC Role / Device Role / Timing Role: Synchronous boost converter with auto-bypass - maintains regulation during full battery discharge curve while minimizing heat and size. Use Value: Extends talk time by 22% vs. non-bypass boosters due to conduction-mode efficiency above 3.3V input. | Use Scenario: IR/RF remotes using AA/AAA alkaline cells, needing stable 3.0V for MCU and transmitter ICs across 1.6–0.9V cell decay. IC Role / Device Role / Timing Role: Low-IQ boost regulator with programmable UVLO - enables reliable operation down to 0.9V per cell and prevents brown-out resets. Use Value: Achieves >12-month shelf life with 2.3 μA shutdown current and eliminates need for backup supercapacitors. |
| Portable Medical Sensors | IoT Edge Nodes |
Use Scenario: Disposable glucose monitors or pulse oximeters powered by button cells (1.5V), requiring 3.3V for BLE radio and analog front-end. IC Role / Device Role / Timing Role: Ultra-low-IQ boost converter with soft-start - prevents inrush-induced voltage sag that could reset embedded MCU during power-up. Use Value: Enables single CR2032 cell to support >500 measurements before replacement, validated per ISO 13485 design controls. | Use Scenario: Battery-powered environmental sensors (temp/humidity/pressure) transmitting via LoRaWAN or NB-IoT every 10 minutes. IC Role / Device Role / Timing Role: High-efficiency synchronous boost with PFM/PWM hybrid control - delivers peak current for radio burst transmission while minimizing idle drain. Use Value: Achieves 7-year battery life on two AA cells by combining 5 μA quiescent current and 96% peak efficiency at 200 mA load. |
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 TPS610995YFFR | Lower IQ (300 nA shutdown), but no auto-bypass; fixed 5.0V output only | Best for ultra-long-life coin-cell applications where output voltage is invariant and bypass is unnecessary | Select when absolute minimum shutdown current outweighs dynamic efficiency optimization needs |
| Analog Devices ADP5070ACPZ-R7 | Higher output current (500 mA), dual-output, but 25 μA IQ and no bypass mode | Suitable for dual-rail systems (e.g., ±3.3V) where space allows larger 16-lead LFCSP package | Choose when dual regulated outputs are required and battery life is secondary to rail flexibility |
Compared with TPS610995YFFR and ADP5070ACPZ-R7, the MCP16418-I/UN uniquely balances ultra-low IQ, auto-bypass efficiency, and programmable output - making it optimal for single-output, battery-voltage-tracking applications in wearables and portable medical devices.
Availability
MCP16418-I/UN is available at Aetrix Electronics and suitable for Bluetooth® headsets, remote controllers, and portable medical sensors requiring stable component supply across long production lifecycles.
Supply support for MCP16418-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, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.
The MCP1641X family was engineered specifically for energy-constrained, battery-powered edge devices - emphasizing adaptive efficiency, minimal external components, and seamless integration with Microchip's PIC and AVR MCUs.
FAQ
What is the minimum input voltage required for MCP16418-I/UN to start up?
The MCP16418-I/UN requires a minimum of 0.8V after startup, but its actual startup voltage depends on the UVLO setting configured via the UVLO pin. Typical startup occurs at ~0.95V with default resistor values. This low threshold enables operation from nearly depleted alkaline cells and supports cold-temperature startup in portable medical sensors.
Does MCP16418-I/UN support adjustable output voltage?
Yes, the MCP16418-I/UN supports adjustable output voltage via the FB pin using an external resistor divider. The feedback reference is 0.6V, allowing output voltages from 2.0V to 5.25V. This configurability makes MCP16418-I/UN suitable for diverse loads including 3.3V BLE radios and 5.0V USB peripherals in compact IoT designs.
How does the auto-bypass mode function in MCP16418-I/UN?
The MCP16418-I/UN automatically engages bypass mode when VIN rises within 100 mV of VOUT, connecting input directly to output through an internal MOSFET. This eliminates switching losses and improves efficiency to >99% in that range - significantly extending runtime in single-cell Li-ion applications where VOUT = 3.3V and VIN decays from 4.2V to 3.2V.
What is the peak output current capability of MCP16418-I/UN at 3.3V output?
At 3.3V output and 1.5V input, the MCP16418-I/UN delivers >200 mA continuous output current. This is verified under thermal conditions with recommended PCB layout and 10 μF ceramic output capacitance. The current limit is internally set and not adjustable, ensuring consistent performance across temperature and process variation.
Is MCP16418-I/UN pin-compatible with other MCP1641X variants?
Yes, all MCP1641X devices including MCP16418-I/UN share identical pinouts across MSOP-10 and TDFN 3×3 mm packages. This allows drop-in replacement between variants (e.g., MCP16411/MCP16412/MCP16418) when switching between PFM/PWM modes or output discharge options - simplifying design reuse and qualification across product families.
MCP16418-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
MCP16418-I/UN FAQ
1.How can I place an order for MCP16418-I/UN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16418-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 MCP16418-I/UN reliable?
The price and inventory of MCP16418-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 MCP16418-I/UN is usually 5 days.
3.What payment methods are accepted for MCP16418-I/UN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16418-I/UN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16418-I/UN?
MCP16418-I/UN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16418-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 MCP16418-I/UN?
For technical support, including MCP16418-I/UN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16418-I/UN requirements.
6.How does Aetrix verify that MCP16418-I/UN is sourced from the original manufacturer or authorized distributors?
All MCP16418-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 MCP16418-I/UN meets industry standards.
7.What is the process for return or replacement of MCP16418-I/UN?
All MCP16418-I/UN units undergo pre-shipment inspection (PSI). If there is an issue with MCP16418-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 MCP16418-I/UN part is unused and in its original packaging.
Return procedure for MCP16418-I/UN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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