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Microchip Technology MCP16412-I/MN
- Part No.:
- MCP16412-I/MN
- Manufacturer:
- Microchip Technology
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MCP16412-I/MN.pdf
- Description:
- IC REG BOOST ADJ 600MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,415
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Product details
Overview
MCP16412-I/MN from Microchip Technology is a synchronous boost DC-DC converter with auto-bypass functionality, designed for single-cell or two-cell battery-powered systems. It delivers up to 450 mA output current at 5.0 V from 3.6 V input, operates down to 0.8 V post-startup, features 500 kHz PWM switching, and achieves 96% peak efficiency-enabling long runtime in Bluetooth® headsets and remote controllers.
For engineers reviewing the MCP16412-I/MN datasheet, MCP16412-I/MN pinout, MCP16412-I/MN application, or MCP16412-I/MN equivalent, key selection considerations include its 5 μA quiescent current in PFM mode, programmable UVLO/LBO, soft-start behavior, 10-lead MSOP package, and automatic input-to-output bypass operation during battery voltage decay.
Technical Context
The MCP16412-I/MN implements a synchronous rectified boost topology with integrated high- and low-side MOSFETs, enabling high efficiency across wide load and input voltage ranges. Its auto-bypass mode engages when VIN ≥ VOUT − 0.2 V, eliminating switching losses and reducing quiescent current to 2.3 μA in shutdown.
It supports fixed-frequency 500 kHz PWM operation (not adaptive PFM/PWM), includes internal compensation, and provides selectable shutdown states including output discharge-critical for system-level power sequencing in portable health monitors and IoT sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8 V (after startup) to 5.25 V - enables operation from depleted alkaline/NiMH or Li-ion cells without brownout. |
| Output Current Capability | 450 mA @ 5.0 VOUT, 3.6 VIN - sufficient to power RF modules and microcontrollers in compact wearables. |
| Quiescent Current | 5 μA typical in PFM mode - extends shelf life and standby time in always-on remote controls. |
| Switching Frequency | 500 kHz fixed PWM - allows use of small external inductors (e.g., 1.0–2.2 μH) and reduces EMI filtering complexity. |
| Bypass Threshold | Auto-engages when VIN ≥ VOUT − 0.2 V - eliminates switching loss and maintains regulation as battery voltage decays near output setpoint. |
| Shutdown Current | 2.3 μA typical - minimizes battery drain during deep sleep in portable instruments. |
| UVLO & LBO | Programmable via external resistors - enables customizable battery end-of-life detection and system-level low-power state entry. |
Pinout & Package
Package: 10-lead MSOP (3.0 mm × 4.9 mm, 0.5 mm pitch), thermally enhanced with exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 0.8–5.25 V; connects directly to battery or power source; internal UVLO monitoring begins here. |
| GND | Power and signal reference | Common return for all internal circuits and external components; must be low-impedance for stable regulation. |
| VOUT | Regulated output node | Delivers regulated voltage; connects to load and feedback divider; bypass path routes directly from VIN when active. |
| FB | Feedback input | Resistor-divider input for output voltage setting; internal reference is 0.6 V; determines regulation accuracy and stability. |
| EN | Enable control input | Active-high logic input; pulls to GND internally via weak pull-down; enables full operation or enters shutdown state. |
| LBO | Low battery open-drain output | Asserts low when input falls below programmed UVLO threshold; drives external MCU interrupt or LED indicator. |
| SW | Switch node | Connects to external inductor and catch diode (if used); carries high-frequency AC current; requires tight layout for EMI control. |
| PGT | Power good open-drain output | Signals valid regulation (VOUT within ±5%); used for system power sequencing or status indication. |
| DIS | Output discharge enable | When asserted, activates internal FET to discharge VOUT to GND during shutdown - prevents residual voltage hold-up. |
| NC | No connect | Unbonded pin; must remain floating or tied to GND per layout guidelines; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Auto input-to-output bypass | Eliminates switching loss and reduces IQ to 2.3 μA when VIN approaches VOUT, extending usable battery capacity by up to 15% in fading-cell scenarios. |
| Internal compensation | Removes need for external compensation network, reducing BOM count by ≥2 components and simplifying layout for space-constrained PCBs. |
| Soft-start circuitry | Controls output ramp rate to limit inrush current during startup - prevents battery voltage sag and protects load capacitance in health-monitoring sensors. |
| Programmable UVLO & LBO | Allows precise battery end-of-life detection using two external resistors; supports multi-cell alkaline, NiMH, and Li-ion chemistries without firmware changes. |
| Output discharge (DIS pin) | Enables safe, controlled VOUT discharge during shutdown - critical for meeting IEC 62368-1 touch-safe requirements in consumer health devices. |
Applications
| Wireless Audio Accessories | Portable Medical Sensors |
|---|---|
Use Scenario: Compact Bluetooth® headset requiring stable 3.3 V rail from a single Li-Po cell with variable voltage (4.2 V → 3.0 V). IC Role / Device Role / Timing Role: Synchronous boost regulator with auto-bypass - maintains regulation while minimizing dropout and quiescent loss during battery decay. Use Value: Delivers 200 mA @ 3.3 V from 1.5 V input and bypasses seamlessly above 3.1 V, extending talk time by >12% vs. fixed-frequency-only converters. | Use Scenario: Handheld pulse oximeter powered by two AA alkaline cells (3.0 V fresh, 1.8 V depleted) driving an optical sensor and BLE SoC. IC Role / Device Role / Timing Role: Low-IQ boost converter with programmable LBO - sustains 5.0 V output while signaling battery depletion to MCU before system reset. Use Value: 5 μA quiescent current and 450 mA capability at 3.6 V input enable >72-hour continuous measurement on fresh batteries. |
| Smart Remote Controllers | IoT Edge Nodes |
Use Scenario: Infrared/RF universal remote with wake-on-button and multi-protocol support, operating from one AAA alkaline cell. IC Role / Device Role / Timing Role: Auto-bypass boost regulator with soft-start - ensures clean power-up of RF transceiver without voltage droop during button press. Use Value: Soft-start limits inrush to <100 mA, preventing false wake events; 2.3 μA shutdown current enables >1-year shelf life. | Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: High-efficiency boost converter with PFM-mode ultra-low IQ - powers MCU and radio only during active transmission bursts. Use Value: 96% peak efficiency and 5 μA PFM IQ reduce average system current to <15 μA, supporting 5+ years on two AA cells. |
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 TPS610992DRVR | Fixed 0.7-V start-up voltage; no auto-bypass; 3.5-μA IQ in shutdown; 1.2-MHz switching. | Lacks input-to-output bypass; less efficient near battery end-of-life; better suited for space-constrained designs needing higher frequency. | Select when board area is critical and battery voltage remains well below output; avoid when maximizing runtime from fading cells is required. |
| Analog Devices ADP5070ACPZ-R7 | Higher 2.5-A switch current; dual-output; external compensation; 2.5-μA shutdown IQ; no auto-bypass. | Designed for precision analog rails; requires more external components; over-specified for single-rail portable IoT loads. | Choose for multi-rail systems needing independent positive/negative outputs; not recommended for cost- or size-sensitive single-rail applications like remotes. |
Compared with TPS610992DRVR and ADP5070ACPZ-R7, the MCP16412-I/MN uniquely combines auto-bypass, 5-μA PFM IQ, and integrated output discharge in a 10-pin MSOP-making it optimal for battery-life-critical, single-rail portable devices where voltage decay management is essential.
Availability
MCP16412-I/MN is available at Aetrix Electronics and suitable for personal healthcare devices, Bluetooth® headsets, and remote controllers requiring stable component supply across production lifecycles.
Supply support for MCP16412-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 for embedded control applications.
The MCP1641X family was developed specifically for ultra-low-power, battery-optimized boost conversion in space-constrained portable electronics-emphasizing runtime extension through auto-bypass and sub-μA quiescent operation.
FAQ
What is the minimum input voltage required for MCP16412-I/MN to start switching?
The MCP16412-I/MN requires a minimum input voltage of 0.8 V after startup to maintain regulation. However, its actual startup voltage depends on external components and load; typical startup occurs at ~0.9 V with recommended 1.0-μH inductor and 10-μF output capacitor. The device does not operate below 0.8 V once running, and cannot restart from voltages below the effective startup threshold defined by the FB divider and internal reference.
Does MCP16412-I/MN support adjustable output voltage?
Yes, MCP16412-I/MN supports adjustable output voltage via an external resistor divider connected to the FB pin. The internal reference is 0.6 V, so VOUT = 0.6 V × (1 + R1/R2). Output voltages from 2.0 V to 5.25 V are achievable with standard 1% resistor values; the datasheet provides design examples for 3.3 V and 5.0 V configurations.
How does the auto-bypass function work in MCP16412-I/MN?
The auto-bypass function in MCP16412-I/MN activates when VIN rises to within ~0.2 V of VOUT, routing input directly to output through an internal FET while disabling switching. This eliminates inductor losses and reduces quiescent current to 2.3 μA in shutdown-like state. Bypass disengages automatically when VIN drops below the threshold, resuming boost operation without external intervention.
Can MCP16412-I/MN drive a 500-mA load at 5 V output?
No, MCP16412-I/MN is rated for up to 450 mA output current at 5.0 V with 3.6 V input under typical conditions. At lower input voltages (e.g., 2.4 V), maximum sustainable output current decreases significantly due to peak switch current limiting (1 A typical). For 500-mA continuous loads, consider thermal derating, PCB copper area, and ambient temperature-design margin should be applied per Microchip's thermal guidelines in DS20006444A.
Is the DIS pin on MCP16412-I/MN mandatory to use?
No, the DIS pin on MCP16412-I/MN is optional. When left unconnected or held low, output discharge is disabled. When driven high, it activates an internal FET to discharge VOUT to GND during shutdown. Use is recommended in safety-critical or touch-safe applications (e.g., IEC 62368-1 compliant health devices), but omitted in cost-sensitive remotes where residual VOUT poses no hazard.
MCP16412-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)
MCP16412-I/MN FAQ
1.How can I place an order for MCP16412-I/MN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16412-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 MCP16412-I/MN reliable?
The price and inventory of MCP16412-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 MCP16412-I/MN is usually 5 days.
3.What payment methods are accepted for MCP16412-I/MN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16412-I/MN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16412-I/MN?
MCP16412-I/MN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16412-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 MCP16412-I/MN?
For technical support, including MCP16412-I/MN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16412-I/MN requirements.
6.How does Aetrix verify that MCP16412-I/MN is sourced from the original manufacturer or authorized distributors?
All MCP16412-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 MCP16412-I/MN meets industry standards.
7.What is the process for return or replacement of MCP16412-I/MN?
All MCP16412-I/MN units undergo pre-shipment inspection (PSI). If there is an issue with MCP16412-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 MCP16412-I/MN part is unused and in its original packaging.
Return procedure for MCP16412-I/MN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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