Microchip Technology MCP19114T-E/MJVAO

Overview

MCP19114T-E/MJVAO from Microchip Technology is a digitally enhanced, mixed-signal synchronous low-side PWM controller with integrated 8-bit PIC® microcontroller core, designed for high-efficiency DC-DC power conversion in LED lighting and battery charging systems. It supports flyback, boost, SEPIC, and Ćuk topologies; operates from 4.5V to 42V input; delivers dual low-side gate drive (0.5A @ 5V or 1A @ 10V); and features ±5% current regulation with differential remote output sensing.

For engineers reviewing the MCP19114T-E/MJVAO datasheet, MCP19114T-E/MJVAO pinout, MCP19114T-E/MJVAO application, or MCP19114T-E/MJVAO equivalent, key selection considerations include its AEC-Q100 qualification, programmable quasi-resonant operation, 4.5–42V input range, integrated 10-bit ADC with five external channels, and configurable dead time (16–256 ns) for precise timing control in automotive-grade power supplies.

Technical Context

The MCP19114T-E/MJVAO integrates an analog peak-current-mode PWM controller with a digital PIC microcontroller core-enabling real-time parameter tuning, fault response customization, and topology-specific control logic. Its dual low-side drivers support bidirectional power flow, while the integrated differential current sense amplifier and DESAT detection circuit enable robust overcurrent and transformer desaturation protection in quasi-resonant flyback designs.

It implements a factory-calibrated 8 MHz internal oscillator (±1% typical), supports I²C communication for host interface, and includes dedicated hardware modules: Timer0/1/2, Enhanced CCD, and MSSP. The device uses two LDOs-5V for digital core/gate drive and 4V for analog circuitry-and provides eight GPIOs with interrupt-on-change capability for system monitoring and status signaling.

Key Specifications

Pinout & Package

Package: 24-pin 4 mm × 4 mm QFN (MCP19114 variant). Exposed thermal pad for enhanced power dissipation. Pin 1 marked by dot; pin numbering follows standard counter-clockwise convention.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally enhanced power analog controller applications.

Compared with MCP19115-E/MJ, the MCP19114T-E/MJVAO offers identical core control functionality in a smaller 24-pin QFN but fewer I/O and ADC resources; compared with UCC28911DR, it trades simplicity for full programmability, enabling custom fault responses, multi-topology support, and host communication via I²C.

Availability

MCP19114T-E/MJVAO is available at Aetrix Electronics and suitable for automotive LED lighting, industrial battery charging, and medical portable equipment power supplies requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.

Supply support for MCP19114T-E/MJVAO 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 Inc. is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.

The MCP19114T-E/MJVAO belongs to Microchip's Digitally Enhanced Power Analog (DEPA) controller family, engineered to merge analog PWM precision with digital configurability for next-generation power conversion in safety-critical and energy-efficient applications.

FAQ

What topology configurations does the MCP19114T-E/MJVAO support?

The MCP19114T-E/MJVAO supports flyback, boost, SEPIC, and Ćuk topologies out-of-the-box, with built-in quasi-resonant capability for flyback and fixed-frequency operation up to 2.0 MHz. Its dual low-side gate drivers and differential current sensing enable bidirectional power flow in advanced architectures like synchronous rectified SEPIC or Ćuk converters. All topology-specific timing, blanking, and slope compensation parameters are fully programmable via its integrated PIC microcontroller core.

Is the MCP19114T-E/MJVAO AEC-Q100 qualified, and what grade does it meet?

Yes, the MCP19114T-E/MJVAO is AEC-Q100 qualified for Grade 1 (−40°C to +125°C ambient temperature), making it suitable for under-hood automotive applications including LED headlamps and body control modules. This qualification covers stress testing for temperature cycling, humidity, ESD, latch-up, and transient immunity per the AEC-Q100 standard, ensuring reliability in harsh automotive environments.

How does the MCP19114T-E/MJVAO implement current regulation accuracy?

The MCP19114T-E/MJVAO achieves ±5% current regulation accuracy through its integrated low-side differential current sense amplifier, programmable leading-edge blanking (0/50/100/200 ns), and peak-current-mode control architecture. The amplifier compensates for offset and gain drift across temperature, and the DAC-based VREF allows precise setting of current setpoints. This accuracy is maintained without external calibration components, reducing BOM count and improving long-term stability in LED driver and battery charge applications.

What are the gate drive voltage and current specifications for the MCP19114T-E/MJVAO?

The MCP19114T-E/MJVAO provides two independent low-side gate drivers: PDRV and SDRV. With VDR = 5V, each delivers 0.5A sink/source current; with VDR = 10V (using external TC1240A doubler), each delivers 1A sink/source. Gate drive dead time is programmable from 16 ns to 256 ns in 16-ns steps, and both drivers support independent leading-edge blanking to suppress noise during switching transitions.

Can the MCP19114T-E/MJVAO operate in quasi-resonant mode without external components?

Yes, the MCP19114T-E/MJVAO includes a dedicated internal comparator with programmable offset voltage adjustment for quasi-resonant (QR) operation. When configured for flyback, it detects valley switching points using the DESATP/DESATN inputs and synchronizes gate drive timing without requiring external comparators, timers, or delay circuits. This integrated QR engine reduces component count and improves EMI performance in high-efficiency LED and adapter designs.