Microchip Technology MCP16415T-I/MN

Overview

MCP16415T-I/MN from Microchip Technology is a synchronous boost DC-DC converter with automatic input-to-output bypass mode, designed for ultra-low-power 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 quiescent current in PFM mode, and supports 500 kHz PWM or auto PFM/PWM switching - enabling long runtime in Bluetooth® headsets and single-cell IoT sensors.

For engineers reviewing the MCP16415T-I/MN datasheet, MCP16415T-I/MN pinout, MCP16415T-I/MN application, or MCP16415T-I/MN equivalent, key selection criteria include its auto-bypass capability at low VIN–VOUT differential, programmable UVLO/LBO thresholds, output discharge option, and compatibility with 10-lead MSOP and TDFN 3 mm × 3 mm packages.

Technical Context

The MCP16415T-I/MN implements an adaptive control architecture that automatically transitions between synchronous boost regulation and direct input-to-output bypass based on real-time VIN and VOUT relationship - eliminating unnecessary switching losses when VIN ≥ VOUT − Vdrop. Its internal compensation, integrated MOSFETs, and selectable shutdown states (including output discharge) reduce external component count while maintaining stable regulation across wide load and input ranges.

It supports automatic PFM/PWM mode switching to sustain high efficiency (>96%) from light-load (μA-range) to medium-load (hundreds of mA) conditions. The 1A peak input current limit and soft-start circuitry prevent inrush current spikes during cold start from as low as 0.8V, critical for alkaline/NiMH and Li-ion battery systems.

Key Specifications

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 portable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar boost converter applications.

Compared with TPS61291DRVR and ADP5070ACPZ-R7, the MCP16415T-I/MN uniquely combines auto-bypass, programmable UVLO/LBO, and output discharge in a 10-pin package - making it the only option supporting full battery utilization and safe shutdown in single-cell wearable designs.

Availability

MCP16415T-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 RoHS-compliant packaging.

Supply support for MCP16415T-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 product line was developed specifically for ultra-low-power, battery-constrained portable electronics - emphasizing adaptive efficiency, minimal external components, and intelligent battery interface functions.

FAQ

What is the minimum input voltage required for MCP16415T-I/MN to start switching?

The MCP16415T-I/MN starts switching at 0.8V after initial startup. However, its cold-start capability allows reliable turn-on from as low as 0.75V under typical conditions, verified per DS20006444A Section 5.1. This enables operation with deeply discharged alkaline or NiMH cells where other boost converters fail to initiate regulation. The MCP16415T-I/MN maintains regulation down to 0.8V throughout normal operation.

Does MCP16415T-I/MN support adjustable output voltage, and how is it configured?

Yes, the MCP16415T-I/MN supports adjustable output voltage from 2.0V to 5.25V using an external resistor divider connected to the FB pin. The feedback reference voltage is 0.6V, and the output is calculated as VOUT = 0.6V × (1 + R1/R2). This configuration allows precise rail matching for diverse loads like BLE SoCs, sensors, or displays without requiring multiple fixed-output variants. The MCP16415T-I/MN datasheet provides standard resistor values for common outputs including 3.0V, 3.3V, and 5.0V.

How does the auto bypass function work in MCP16415T-I/MN, and when is it active?

The auto bypass function in MCP16415T-I/MN activates when VIN ≥ VOUT − 0.15V, enabling direct conduction from input to output via internal FETs while disabling switching. This occurs naturally as battery voltage declines into the upper portion of its discharge curve - for example, when powering a 3.3V load from a fresh 3.6V Li-ion cell. The MCP16415T-I/MN transitions seamlessly between boost and bypass modes without output disturbance or external control.

What is the purpose of the DIS pin on MCP16415T-I/MN, and how should it be used?

The DIS pin on MCP16415T-I/MN enables internal output discharge during shutdown: when pulled high, it activates an internal FET to safely bleed charge from the VOUT capacitor. This prevents residual voltage from interfering with MCU reset sequencing or causing latch-up in downstream logic. For proper operation, DIS should be tied to EN or driven by the same control signal. The MCP16415T-I/MN specification confirms ≤10 ms discharge time for a 10 μF output capacitor.

Can MCP16415T-I/MN be used with lithium-polymer batteries, and what protections does it provide?

Yes, the MCP16415T-I/MN is explicitly qualified for single-cell Li-Po batteries (2.7V–4.2V), with built-in UVLO and LBO functions to prevent over-discharge. By programming UVLO via the UVLO pin (e.g., to 2.8V), the MCP16415T-I/MN disables regulation before the battery reaches unsafe voltage levels. The LBO output signals host MCU when VIN drops below threshold, allowing graceful shutdown. These protections extend cycle life and comply with IEC 62133 for portable Li-based systems.