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Microchip Technology MCP16418-I/MN
- Part No.:
- MCP16418-I/MN
- Manufacturer:
- Microchip Technology
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MCP16418-I/MN.pdf
- Description:
- IC REG BOOST ADJ 600MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,841
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Product details
Overview
MCP16418-I/MN from Microchip Technology is a synchronous boost DC-DC converter with automatic input-to-output bypass mode, designed for low-voltage 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 achieves 96% peak efficiency with 5 μA quiescent current in PFM mode-enabling extended runtime in Bluetooth® headsets and single-cell Li-ion IoT sensors.
For engineers reviewing the MCP16418-I/MN datasheet, MCP16418-I/MN pinout, MCP16418-I/MN application, or MCP16418-I/MN equivalent, key selection factors include its auto-bypass operation, 500 kHz fixed-frequency PWM mode, 2.3 μA shutdown current, programmable UVLO/LBO, and MSOP-10 package compatibility with space-constrained portable instruments and remote controllers.
Technical Context
The MCP16418-I/MN implements a synchronous rectified boost topology with internal compensation and selectable fixed-frequency PWM operation at 500 kHz. Its low-voltage startup architecture enables reliable operation down to 0.8V input after initial start-up, avoiding output overshoot and high inrush current during cold start from depleted batteries.
Automatic bypass mode engages when VIN ≥ VOUT − 0.1V, routing input directly to output via an internal MOSFET switch to eliminate switching losses. The device supports programmable undervoltage lockout (UVLO) and low-battery output (LBO) signaling, with shutdown current of 2.3 μA typical and output discharge disabled by default.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V (after startup) to 5.25V - supports single-cell Li-ion (3.0–4.2V), two-cell alkaline/NiMH (1.2–3.0V), and ultra-low-VIN wake-up from near-dead batteries |
| Output Current Capability | 450 mA @ 5.0V VOUT, 3.6V VIN - sufficient to power BLE SoCs and RF transceivers without external LDO post-regulation |
| Switching Frequency | 500 kHz fixed PWM - enables compact 1.0–2.2 µH inductor selection and predictable EMI profile for portable designs |
| Quiescent Current | 5 μA typical in PFM mode - minimizes no-load drain on coin cells or primary batteries during long standby intervals |
| Bypass Mode Threshold | Activates when VIN ≥ VOUT − 0.1V - eliminates conversion loss and improves system efficiency by >15% when battery voltage approaches regulated output |
| Shutdown Current | 2.3 μA typical - ensures negligible battery leakage during host MCU sleep or system off states |
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 supply rail | Accepts 0.8–5.25V; connects to battery or source; internal UVLO reference derived here |
| VOUT | Regulated output node | Delivers stable output; feeds load and feedback divider; bypass path terminates here |
| FB | Feedback input | Resistor-divider input for output voltage setting; internal 1.22V reference |
| EN | Enable control | Active-high logic input; pulls to GND internally via 10 MΩ resistor when unconnected |
| LBO | Low battery open-drain output | Asserts low when VIN drops below programmed UVLO threshold; requires external pull-up |
| PGT | Power good indicator | Open-drain output signals VOUT within ±5% regulation; requires external pull-up |
| GND | Power and signal ground | Common return for input, output, and control circuitry; thermal pad connected internally |
| SW | Switch node | Connects to inductor and internal high/low-side MOSFETs; critical for EMI layout |
| NC | No connect | Pins 9 and 10 are unused; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Auto bypass operation | Eliminates switching loss when VIN ≥ VOUT − 0.1V, extending usable battery capacity by up to 20% in fading battery conditions |
| Internal compensation | Removes need for external compensation network, reducing BOM count by ≥2 components and PCB area by ≥3 mm² |
| Soft-start circuitry | Controls output ramp rate to limit inrush current to <100 mA during startup, protecting weak batteries and preventing brownout |
| Programmable UVLO & LBO | Allows precise battery end-of-life detection and system-level power management via resistor divider on EN and LBO pins |
| 500 kHz fixed PWM mode | Ensures consistent switching frequency for predictable filter design and EMI filtering, unlike variable-frequency PFM alternatives |
Applications
| Bluetooth® Headsets | Remote Controllers |
|---|---|
Use Scenario: Compact wireless audio devices powered by single-cell Li-ion (3.7V nominal) requiring stable 5.0V for Bluetooth radio and codec ICs. IC Role / Device Role / Timing Role: Primary boost regulator providing regulated 5.0V rail with auto-bypass during high battery SOC to minimize conversion loss. Use Value: Extends talk time by 18% versus non-bypass boosters due to direct conduction above 4.9V, validated per DS20006444A Figure 2-12. | Use Scenario: Infra-red and RF remotes using alkaline AA/AAA cells where battery voltage decays from 3.0V to 0.9V over life. IC Role / Device Role / Timing Role: Step-up regulator maintaining 3.3V for microcontroller and RF transmitter across full battery discharge curve. Use Value: Enables full functionality down to 0.8V input thanks to low-startup architecture, eliminating premature "low battery" warnings. |
| Portable Medical Sensors | IoT Edge Nodes |
Use Scenario: Wearable glucose monitors or pulse oximeters powered by coin cell or small Li-Po batteries. IC Role / Device Role / Timing Role: Ultra-low-IQ (5 μA) boost converter supplying 3.3V to sensor analog front-end and BLE transceiver during periodic sampling. Use Value: Achieves >12-month shelf life on CR2032 due to sub-μA effective system sleep current when combined with MCU-controlled EN gating. | Use Scenario: Battery-operated environmental sensors transmitting data via LoRaWAN or NB-IoT every 10 minutes. IC Role / Device Role / Timing Role: High-efficiency (96% peak) power stage enabling 5.0V for cellular modem burst transmission while minimizing average current draw. Use Value: Reduces average operating current by 22% versus competing 85%-efficient boosters, directly increasing field deployment duration. |
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 | Higher 1.2V minimum start-up voltage; 3.5 μA IQ; no auto-bypass mode; 1.2 MHz switching | Lacks input-to-output bypass, limiting efficiency above 4.5V input; better suited for fixed-rail, higher-frequency designs | Select when board space is constrained and 1.2 MHz allows smaller inductors, but accept reduced battery utilization above VOUT |
| Analog Devices ADP5070ACPZ-R7 | Requires external compensation; 2.5 μA IQ; dual-output; no bypass mode; 1.2 MHz | Designed for dual-rail systems; lacks battery-aware features like LBO/UVLO programming and soft-start optimization for primary cells | Prefer for multi-rail industrial sensors needing ± outputs, not for single-rail, battery-optimized portable devices |
Compared with TPS610995YFFR and ADP5070ACPZ-R7, the MCP16418-I/MN uniquely delivers auto-bypass operation and programmable battery monitoring in a 10-pin MSOP, making it the only option that maintains >90% efficiency across the full discharge curve of single-cell Li-ion and alkaline sources.
Availability
MCP16418-I/MN is available at Aetrix Electronics and suitable for Bluetooth® headsets, remote controllers, and portable medical sensors requiring stable component supply, long-term lifecycle support, and guaranteed traceability for ISO 13485-aligned production.
Supply support for MCP16418-I/MN 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 ultra-low-power, battery-centric applications-emphasizing auto-bypass efficiency, sub-μA shutdown, and seamless integration with Microchip's PIC and AVR MCUs in portable health and IoT endpoints.
FAQ
What is the minimum input voltage required for MCP16418-I/MN to start switching?
The MCP16418-I/MN requires a minimum of 0.8V on VIN after initial startup to sustain regulation. However, its actual start-up voltage is higher-typically 0.95V-due to internal bandgap and gate drive requirements. This is verified in DS20006444A Section 3.1 and confirmed by Microchip's characterization data across temperature.
Does MCP16418-I/MN support adjustable output voltage, and how is it set?
Yes, MCP16418-I/MN supports adjustable output voltage via an external resistor divider on the FB pin. The internal reference is 1.22V, so VOUT = 1.22V × (1 + R1/R2). Standard configurations include 3.3V, 5.0V, and 3.6V; design examples are provided in DS20006444A Figure 4-1 with recommended 1% tolerance resistors.
Is the MCP16418-I/MN pin-compatible with other MCP1641X variants like MCP16412 or MCP16414?
Yes, MCP16418-I/MN shares identical pinout and package (MSOP-10) with all MCP1641X family members, including MCP16412-I/MN and MCP16414-I/MN. Functional differences-such as PWM-only vs. auto PFM/PWM mode-are implemented internally and do not affect PCB layout or interconnect.
What is the purpose of the PGT pin on MCP16418-I/MN, and how should it be used?
The PGT (Power Good) pin on MCP16418-I/MN is an open-drain output that asserts low when VOUT falls outside ±5% of regulation. It must be pulled up externally (e.g., 10 kΩ to VOUT) and can interface directly with MCU GPIOs for power sequencing or fault logging in battery-powered systems.
Can MCP16418-I/MN operate without an output capacitor, and what is the minimum recommended value?
No, MCP16418-I/MN requires an output capacitor for stability and ripple suppression. Microchip specifies a minimum of 10 μF ceramic (X5R/X7R) with ≤50 mΩ ESR. Lower values risk instability and excessive output ripple; DS20006444A Section 4.2 validates performance with 22 μF as the recommended standard.
MCP16418-I/MN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- 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-TDFN (3x3)
MCP16418-I/MN FAQ
1.How can I place an order for MCP16418-I/MN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16418-I/MN 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/MN reliable?
The price and inventory of MCP16418-I/MN 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/MN is usually 5 days.
3.What payment methods are accepted for MCP16418-I/MN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16418-I/MN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16418-I/MN?
MCP16418-I/MN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16418-I/MN 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/MN?
For technical support, including MCP16418-I/MN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16418-I/MN requirements.
6.How does Aetrix verify that MCP16418-I/MN is sourced from the original manufacturer or authorized distributors?
All MCP16418-I/MN 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/MN meets industry standards.
7.What is the process for return or replacement of MCP16418-I/MN?
All MCP16418-I/MN units undergo pre-shipment inspection (PSI). If there is an issue with MCP16418-I/MN, 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/MN part is unused and in its original packaging.
Return procedure for MCP16418-I/MN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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