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Microchip Technology MCP16412T-I/UN
- Part No.:
- MCP16412T-I/UN
- Manufacturer:
- Microchip Technology
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP16412T-I/UN.pdf
- Description:
- IC REG BOOST ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP16412T-I/UN from Microchip Technology is a synchronous boost DC-DC converter with automatic input-to-output bypass mode, designed for battery-powered systems requiring high efficiency across varying input voltages. It supports 0.8V–5.25V input, delivers up to 5.0V output, achieves 96% peak efficiency, maintains 5 μA quiescent current in PFM mode, and operates at 500 kHz PWM switching frequency - ideal for single-cell Li-ion or two-cell alkaline/NiMH portable devices.
For engineers reviewing the MCP16412T-I/UN datasheet, MCP16412T-I/UN pinout, MCP16412T-I/UN application, or MCP16412T-I/UN equivalent, key selection criteria include its auto-bypass capability, 500 kHz fixed-frequency PWM operation, 1A peak input current limit, programmable UVLO/LBO, and dual-package availability (MSOP-10/TDFN-10) for space-constrained IoT and wearable designs.
Technical Context
The MCP16412T-I/UN implements a synchronous rectified boost topology with internal compensation and integrated MOSFETs, eliminating external loop compensation components. Its low-voltage start-up architecture enables reliable operation down to 0.8V post-startup, while the automatic bypass mode engages when VIN ≥ VOUT – reducing conduction losses and extending battery runtime without control intervention.
It operates exclusively in fixed-frequency PWM mode (500 kHz), distinguishing it from PFM/PWM hybrid variants in the MCP1641X family. The device includes dedicated EN, FB, LBO, and UVLO pins for system-level power sequencing and battery monitoring, with shutdown current specified at 2.3 μA typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V (after startup) to 5.25V - supports fresh and depleted single-cell Li-ion (2.7–4.2V) and two-cell alkaline/NiMH (1.2–3.2V) without external pre-regulation. |
| Output Voltage | Fixed 5.0V - eliminates need for external feedback resistors; suitable for USB-peripheral powering and 3.3V LDO input stages. |
| Switching Frequency | 500 kHz - enables use of small external inductors (e.g., 1–2.2 μH) and ceramic capacitors while maintaining EMI control. |
| Quiescent Current | 5 μA typical in PFM mode - minimizes no-load battery drain in standby, critical for remote controls and health sensors. |
| Peak Input Current Limit | 1A typical - constrains inrush during startup and transient load steps, protecting weak batteries and PCB traces. |
| Bypass Mode | Automatic VIN-to-VOUT connection when VIN ≥ VOUT - reduces dropout voltage to ~100 mV, improving efficiency at high battery SOC. |
| Shutdown Current | 2.3 μA typical - ensures ultra-low leakage during system sleep, supporting multi-year battery life in IoT endpoints. |
Pinout & Package
Package: 10-lead MSOP (3.0 mm × 4.9 mm) and 10-lead 3 mm × 3 mm TDFN - both thermally enhanced, RoHS-compliant, and optimized for compact portable layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply rail | Accepts 0.8–5.25V; connects directly to battery or source; powers internal circuitry and high-side switch. |
| GND | Power and signal reference | Common return for all analog/digital blocks; must be low-impedance connection to minimize noise and dropout error. |
| VOUT | Regulated output | Delivers fixed 5.0V; supplies downstream loads; bypass mode connects VIN directly to this pin when enabled. |
| SW | Switch node | Connects to external inductor and catch diode (or synchronous FET); carries high di/dt switching current. |
| FB | Feedback input | Internally tied to fixed 5.0V reference; not user-adjustable - simplifies layout and eliminates resistor tolerance errors. |
| EN | Enable control | Active-high logic input; pulls device into shutdown (2.3 μA IQ) when low; supports system-level power gating. |
| LBO | Low battery indicator | Open-drain output asserted low when VIN drops below programmable UVLO threshold - enables host MCU battery warning. |
| UVLO | Undervoltage lockout adjust | Resistor-divider input setting turn-on/off thresholds; allows customization of battery cutoff voltage per chemistry. |
| DIS | Output discharge enable | When high, activates internal discharge path from VOUT to GND during shutdown - prevents floating output in safety-critical apps. |
| NC | No connect | Unused pin; must remain unconnected per datasheet - avoids parasitic coupling or thermal derating issues. |
Key Features
| Feature | Design Value |
|---|---|
| Auto Bypass Operation | Engages seamlessly when VIN ≥ VOUT, reducing effective dropout to ~100 mV and eliminating switching losses - extends usable battery capacity by up to 15% in mid-SOC range. |
| Fixed 500 kHz PWM Mode | Guarantees consistent switching frequency for predictable EMI filtering and inductor sizing - avoids audible noise and simplifies compliance testing vs. variable-frequency PFM modes. |
| Programmable UVLO & LBO | Allows precise battery end-of-life detection per chemistry (e.g., 2.8V for Li-ion, 1.0V/cell for alkaline) - prevents deep discharge and improves system reliability. |
| Integrated Output Discharge | Activates internal 200 Ω discharge path on VOUT during shutdown - eliminates need for external bleed resistor and ensures safe power-down sequencing. |
| Ultra-Low Quiescent Current | 5 μA in PFM mode enables >1-year shelf life in always-on health monitors using CR2032 coin cells - verified under real-world partial-load conditions. |
Applications
| Bluetooth® Headsets | Remote Controllers |
|---|---|
Use Scenario: Compact wireless audio device powered by single AAA alkaline battery with intermittent high-current bursts during codec processing and RF transmission. IC Role / Device Role / Timing Role: Primary 5V power rail generator enabling Bluetooth radio, audio DAC, and microphone bias - operating in auto-bypass during idle and PWM boost during transmit peaks. Use Value: 96% efficiency at 200 mA load and 5 μA quiescent current extend battery life to >100 hours of active use and >6 months standby. | Use Scenario: IR-based universal remote with OLED display, button matrix, and BLE pairing - powered by two AA alkaline cells with infrequent but high-peak current demands. IC Role / Device Role / Timing Role: System power manager delivering stable 5V to display driver and MCU, using UVLO to disable output before battery depletion causes erratic behavior. Use Value: Auto-bypass mode sustains full functionality down to 2.4V input (vs. 2.7V cutoff without bypass), adding ~15% usable battery energy. |
| Portable Health Monitors | IoT Sensor Nodes |
Use Scenario: Wrist-worn pulse oximeter using CR2032 coin cell, requiring regulated 3.3V (via downstream LDO) and periodic LED drive pulses drawing >100 mA. IC Role / Device Role / Timing Role: Primary boost stage generating 5V from 2.0–3.0V battery; soft-start limits inrush during LED activation to prevent voltage sag and sensor read errors. Use Value: 1A peak input current limit and soft-start ensure accurate SpO₂ measurements during concurrent LED flash and ADC sampling. | Use Scenario: Battery-powered environmental sensor node (temp/humidity/pressure) transmitting data via LoRaWAN every 10 minutes - powered by single Li-SOCl₂ cell with 10-year target lifetime. IC Role / Device Role / Timing Role: High-efficiency power source converting 3.6V nominal to 5.0V for RF transceiver burst transmission; shutdown mode activated between transmissions. Use Value: 2.3 μA shutdown current and 5 μA PFM quiescent current reduce average system IQ to <10 μA - enabling >10-year operation on 2.4 Ah cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61291DRVR | Fixed 5.0V output, 1.2 MHz switching, 2.5 μA IQ, no auto-bypass mode, requires external compensation. | Lacks automatic VIN-to-VOUT conduction - less efficient at high battery SOC; better suited for constant-load, space-constrained apps where size outweighs efficiency. | Select when board area is critical and input stays well below 5V; avoid if battery voltage crosses output threshold frequently. |
| MAX17222ATA+T | Fixed 5.0V output, 1.2 MHz, 3.5 μA IQ, no bypass, no programmable UVLO, only 400 mA max output current. | Lower current capability and missing battery monitoring features limit use to low-power peripherals - not viable for headsets or health monitors with LED drivers. | Choose for simple, low-cost 5V boost where load ≤300 mA and battery monitoring is handled externally. |
Compared with TPS61291DRVR and MAX17222ATA+T, the MCP16412T-I/UN uniquely combines auto-bypass, programmable UVLO/LBO, and 1A peak current support - making it the only option among the three capable of sustaining high-efficiency operation across the full discharge curve of two-cell alkaline and single-cell Li-ion sources.
Availability
MCP16412T-I/UN is available at Aetrix Electronics and suitable for personal healthcare devices, Bluetooth headsets, and remote controllers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MCP16412T-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 a focus on embedded control and low-power system solutions.
The MCP1641X product line was developed specifically for battery-powered portable electronics needing adaptive efficiency - emphasizing auto-bypass operation, ultra-low quiescent current, and seamless integration with mixed-signal MCUs like PIC10F320.
FAQ
What is the output voltage configuration of the MCP16412T-I/UN?
The MCP16412T-I/UN provides a factory-trimmed fixed 5.0V output voltage. No external feedback resistors are required or supported - the FB pin is internally connected to the 5.0V reference. This simplifies design, improves accuracy over temperature, and reduces bill-of-materials cost compared to adjustable boost converters. The MCP16412T-I/UN is not configurable for other output voltages.
Does the MCP16412T-I/UN support automatic input-to-output bypass mode?
Yes, the MCP16412T-I/UN implements automatic bypass mode: when input voltage rises to or exceeds the 5.0V output level, an internal switch connects VIN directly to VOUT, bypassing the boost converter. This reduces conduction loss to ~100 mV and eliminates switching losses - significantly improving efficiency during high-state-of-charge battery operation. Bypass is fully autonomous and requires no external control signals.
What package options are available for the MCP16412T-I/UN?
The MCP16412T-I/UN is offered in two RoHS-compliant packages: 10-lead MSOP (3.0 mm × 4.9 mm) and 10-lead 3 mm × 3 mm TDFN. Both packages feature exposed thermal pads for enhanced power dissipation and are compatible with standard reflow soldering processes. The TDFN variant provides superior thermal performance and smaller footprint - preferred for ultra-compact wearables and hearing aids.
How does the MCP16412T-I/UN manage battery end-of-life detection?
The MCP16412T-I/UN supports programmable undervoltage lockout (UVLO) and low battery output (LBO) via external resistor dividers on the UVLO pin. This allows designers to set precise turn-on and turn-off thresholds tailored to battery chemistry - e.g., 2.8V for Li-ion or 1.0V per cell for alkaline. The open-drain LBO pin asserts low when VIN falls below the programmed threshold, enabling host MCU battery warnings without additional sensing circuitry.
Is the MCP16412T-I/UN pin-compatible with other members of the MCP1641X family?
No, the MCP16412T-I/UN is not pin-compatible with all MCP1641X variants. While it shares the same 10-pin MSOP/TDFN footprint with MCP16414/6/8, functional pin assignments differ - notably the DIS pin on MCP16412T-I/UN replaces the MODE pin found on PFM/PWM hybrid versions. Direct substitution requires verification of pin function mapping, especially for EN, LBO, UVLO, and DIS connections in existing layouts.
MCP16412T-I/UN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
MCP16412T-I/UN FAQ
1.How can I place an order for MCP16412T-I/UN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16412T-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 MCP16412T-I/UN reliable?
The price and inventory of MCP16412T-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 MCP16412T-I/UN is usually 5 days.
3.What payment methods are accepted for MCP16412T-I/UN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16412T-I/UN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16412T-I/UN?
MCP16412T-I/UN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16412T-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 MCP16412T-I/UN?
For technical support, including MCP16412T-I/UN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16412T-I/UN requirements.
6.How does Aetrix verify that MCP16412T-I/UN is sourced from the original manufacturer or authorized distributors?
All MCP16412T-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 MCP16412T-I/UN meets industry standards.
7.What is the process for return or replacement of MCP16412T-I/UN?
All MCP16412T-I/UN units undergo pre-shipment inspection (PSI). If there is an issue with MCP16412T-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 MCP16412T-I/UN part is unused and in its original packaging.
Return procedure for MCP16412T-I/UN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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