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Microchip Technology MCP19110T-E/MJ
- Part No.:
- MCP19110T-E/MJ
- Manufacturer:
- Microchip Technology
- Category:
- DC DC Switching Controllers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
MCP19110T-E/MJ.pdf
- Description:
- IC REG CTRLR BUCK PMBUS 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
MCP19110T-E/MJ from Microchip Technology is a digitally-enhanced synchronous buck controller with integrated 8-bit microcontroller core and dual high-current gate drivers, supporting input voltage range of 4.5V–32V, output voltage range of 0.5V–3.6V (with external divider for >3.6V), and switching frequency from 100 kHz to 1.6 MHz. It delivers peak current mode control, differential remote output sensing, and AEC-Q100 qualification for automotive-grade DC/DC power conversion in engine control units and ADAS modules.
For engineers reviewing the MCP19110T-E/MJ datasheet, MCP19110T-E/MJ pinout, MCP19110T-E/MJ application, or MCP19110T-E/MJ equivalent, key selection considerations include its 24-pin QFN package, 11 I/O pins (including three open-drain), 10-bit ADC with 12 internal + 8 external channels, I²C/PMBus interface, and configurable protection thresholds for overcurrent, overvoltage, and undervoltage events.
Technical Context
The MCP19110T-E/MJ integrates analog PWM control circuitry with a PIC® mid-range microcontroller core, enabling real-time firmware customization of startup/shutdown profiles, fault handling, and compensation without external digital controllers. Its peak current mode architecture uses internal analog comparators and error amplifiers fed by differential +VSEN/–VSEN and bidirectional +ISEN/–ISEN inputs.
Two independent 5V LDOs power analog circuitry (on-chip) and digital logic (VDD pin), while VDR supplies the synchronous gate drivers. The device supports master/slave operation in multi-phase and multiple-output systems via dedicated SYNC signal routing on GPA1 and GPB1, with frequency synchronization and shared error signals enabled through BUFFCON register configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 32V - supports wide automotive battery range including cold-crank and load-dump conditions. |
| Output Voltage Range | 0.5V to 3.6V - programmable via internal DAC; >3.6V requires external resistor divider for feedback scaling. |
| Switching Frequency | 100 kHz to 1.6 MHz - adjustable via register or external clock; enables optimization of efficiency vs. size in compact designs. |
| Gate Drive Capability | High-drive: 1A/2A source/sink; Low-drive: 2A/4A source/sink - drives high-side and low-side MOSFETs directly without external buffers. |
| ADC Resolution & Channels | 10-bit resolution with 12 internal + 8 external analog inputs - enables comprehensive system monitoring including VIN, VOUT, IOUT, temperature, and auxiliary sensors. |
| Memory & Core | 4096-word Flash program memory, 8 MHz factory-calibrated oscillator, 100,000 write endurance - supports field-upgradable firmware for adaptive power management. |
| Protection Features | Configurable OCP, OVP, UVP, UVLO, thermal shutdown - user-defined thresholds stored in nonvolatile memory for consistent behavior across production units. |
Pinout & Package
Package: 24-pin QFN (4 mm × 4 mm, exposed thermal pad), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary power input | Accepts 4.5V–32V supply; connects to bulk input capacitor and PGND return path. |
| VDD | Digital logic supply output | +5V regulated output powering MCU core and peripherals; requires 1 µF bypass to PGND. |
| VDR | Gate driver supply input | +5V input for synchronous drivers; may be tied to VDD or filtered separately for noise immunity. |
| HDRV / LDRV | High-side / low-side gate drive outputs | Floating (HDRV) and referenced (LDRV) CMOS drivers capable of 2A sink/4A sink respectively. |
| PHASE | Switch node connection | Connects to drain of high-side MOSFET and source of low-side MOSFET; critical for bootstrap charging. |
| BOOT | Bootstrap capacitor connection | Provides floating supply for high-side driver; requires external 0.1 µF ceramic capacitor to PHASE. |
| +VSEN / –VSEN | Differential output voltage sense | Enables accurate remote sensing across PCB traces; rejects common-mode noise up to ±100 mV. |
| +ISEN / –ISEN | Differential current sense inputs | Supports bidirectional current measurement using external shunt; feeds analog comparator for OCP. |
| GPA1 / GPB1 | SYNC / EAPIN | Configurable as frequency sync input/output (multi-phase/multiple-output) or error amplifier I/O for daisy-chained regulation. |
| GPA4 / GPA7 / GPB0 | Open-drain I/O | Support SMBus Alert (GPA4), I²C clock (GPA7), and I²C data (GPB0); require external pull-ups for bus operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient temperatures (–40°C to +125°C) and stress testing per JEDEC standards. |
| Dual 5V LDOs (analog + digital) | Independent regulation ensures analog control loop stability unaffected by digital switching noise on VDD. |
| 10-bit ADC with 20-channel multiplexing | Enables closed-loop telemetry of input/output voltage/current, die temperature, and external sensor inputs simultaneously. |
| I²C/PMBus-compatible interface | Allows host processor to read telemetry, update configuration registers, and trigger firmware updates without reset. |
| Configurable soft-start profile | User-defined ramp rate and delay prevent inrush current during power-up in sensitive downstream loads. |
| Multi-phase/multiple-output coordination | Hardware-supported phase interleaving and error signal sharing eliminate need for external timing ICs or op-amps. |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Supply |
|---|---|
Use Scenario: Regulating 5V/3.3V rails for microcontrollers, CAN transceivers, and sensors in under-hood environments subject to wide temperature swings and electrical transients. IC Role / Device Role / Timing Role: Primary synchronous buck controller with integrated MCU managing startup sequencing, fault logging, and dynamic voltage scaling based on engine load. Use Value: Eliminates discrete supervisor IC and external ADC, reducing BOM count by ≥4 components while meeting AEC-Q100 requirements out-of-box. |
Use Scenario: Providing tightly regulated 1.2V core supply for image signal processors (ISPs) in surround-view camera modules where EMI must be minimized. IC Role / Device Role / Timing Role: Digitally enhanced buck controller implementing spread-spectrum switching and precise output voltage tracking via differential remote sense. Use Value: Achieves <±0.5% output accuracy over line/load/temperature and reduces conducted EMI by >10 dB compared to standard analog controllers. |
| Industrial PLC I/O Module | Server Point-of-Load (POL) |
Use Scenario: Generating isolated 24V-to-5V/3.3V conversion for digital I/O conditioning circuits in programmable logic controllers operating in noisy factory environments. IC Role / Device Role / Timing Role: Synchronous buck controller with configurable OVP/UVP thresholds and fast-response current limiting protecting downstream FETs and optocouplers. Use Value: Enables single-chip protection against 48V surge events and supports hot-swap capability via programmable soft-start and fault recovery timers. |
Use Scenario: Delivering high-efficiency 12V-to-1.8V conversion for FPGA or ASIC cores requiring dynamic voltage/frequency scaling (DVFS). IC Role / Device Role / Timing Role: Digitally programmable POL controller interfacing with host PMBus manager to adjust output voltage in real time during workload changes. Use Value: Supports <10 µs response to voltage step commands and maintains <±1% regulation across 0–100% load steps without external compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally-enhanced synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP19111T-E/MJ | 28-pin QFN; adds GPB4/GPB5 (extra ADC channels), GPB6/GPB7 (I/O), ICSPDAT/ICSPCLK on dedicated pins instead of GPA6/GPA7. | Required when >12 ADC channels or additional I/O for status LEDs, fan control, or secondary communication interfaces are needed. | Select MCP19111T-E/MJ only if extra analog/digital resources justify larger footprint and higher cost. |
| LM5145RQNT | Analog-only controller (no MCU); no Flash memory, ADC, or I²C; supports wider VIN (4.5V–65V) and higher switching frequency (up to 2.2 MHz). | Suitable for cost-sensitive, fixed-function applications where firmware flexibility and telemetry are unnecessary. | Choose LM5145RQNT when design requires higher input voltage rating or simpler qualification path without embedded software validation. |
Compared with MCP19110T-E/MJ, the MCP19111T-E/MJ offers expanded peripheral integration at the expense of board area, while the LM5145RQNT trades digital intelligence for higher voltage tolerance and analog simplicity-making each optimal for distinct trade-offs between programmability, footprint, and input range.
Availability
MCP19110T-E/MJ is available at Aetrix Electronics and suitable for automotive power management, ADAS subsystems, industrial PLCs, and server point-of-load applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for MCP19110T-E/MJ 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 vertically integrated silicon and development tools.
The MCP19110T-E/MJ belongs to Microchip's digitally-enhanced power analog controller product line, designed specifically to replace traditional analog controllers with firmware-configurable alternatives for automotive and industrial DC/DC conversion where adaptability, diagnostics, and qualification rigor are essential.
FAQ
What is the primary function of the MCP19110T-E/MJ in a power supply design?
The MCP19110T-E/MJ serves as a digitally-enhanced synchronous buck controller integrating analog PWM regulation with an 8-bit PIC microcontroller core. It manages high-efficiency DC/DC conversion from 4.5V–32V input to 0.5V–3.6V output while enabling firmware-based configuration of protection thresholds, soft-start, and telemetry. Its dual gate drivers, differential sensing, and AEC-Q100 qualification make it ideal for automotive and industrial applications where reliability and programmability are critical. The MCP19110T-E/MJ replaces discrete analog controllers plus external microcontrollers in compact, high-integration power designs.
How does the MCP19110T-E/MJ differ from the MCP19111T-E/MJ?
The MCP19110T-E/MJ uses a 24-pin QFN package with 11 I/O pins (three open-drain), 12 internal + 8 external ADC channels, and serial programming via GPA6 (ICSPDAT) and GPA7 (ICSPCLK). The MCP19111T-E/MJ uses a 28-pin QFN package adding GPB4/GPB5 (two more ADC channels), GPB6/GPB7 (two general-purpose I/O), and dedicated ICSPDAT/ICSPCLK pins. Both share identical analog control architecture, firmware compatibility, and AEC-Q100 qualification. The MCP19110T-E/MJ is selected when minimal footprint and cost are prioritized; the MCP19111T-E/MJ is chosen when additional analog/digital resources are required without changing control algorithms.
Does the MCP19110T-E/MJ support I²C or PMBus communication?
Yes, the MCP19110T-E/MJ supports full I²C and PMBus-compatible communication using GPA7 (SCL) and GPB0 (SDA) pins. It implements 7-bit addressing with two dedicated address registers, SMBus timeout and alert response protocols, and PMBus command sets for reading telemetry (input/output voltage/current, temperature), writing configuration registers (OVP/UVP thresholds, soft-start time), and triggering firmware updates. This allows host processors to dynamically reconfigure the MCP19110T-E/MJ during operation without interrupting power delivery, making it suitable for adaptive power management in automotive and server applications.
What protection features are configurable in the MCP19110T-E/MJ?
The MCP19110T-E/MJ provides user-configurable protection features stored in nonvolatile memory, including overcurrent limit (via +ISEN/–ISEN), input undervoltage lockout (UVLO), output overvoltage (OVP), output undervoltage (UVP), thermal shutdown threshold, synchronous driver dead time, and soft-start profile. These parameters are set via firmware using MPLAB X IDE and retained across power cycles. Configuration occurs during manufacturing or field update, ensuring consistent behavior across all units in a production batch. The MCP19110T-E/MJ executes protection responses-including immediate shutdown, latched fault, or auto-retry-with timing and recovery logic defined in firmware, not hardwired analog comparators.
Is the MCP19110T-E/MJ qualified for automotive applications?
Yes, the MCP19110T-E/MJ is AEC-Q100 Grade 1 qualified, tested for operation from –40°C to +125°C ambient temperature and validated against stress tests including HTOL, TC, UHAST, and ESD per JEDEC standards. Its design incorporates automotive-specific features such as differential remote voltage sensing, robust current sense rejection, and fault logging in nonvolatile memory. The device meets ISO 16750-2 electrical transient requirements when implemented with recommended layout and filtering. As a result, the MCP19110T-E/MJ is approved for use in engine control units, body control modules, infotainment systems, and ADAS power supplies where automotive-grade reliability is mandatory.
MCP19110T-E/MJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 32V
- Frequency - Switching:
- 100kHz ~ 1.6MHz
- Duty Cycle (Max):
- -
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- I2C, PMBus, SMBus
- Control Features:
- Phase Control
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
MCP19110T-E/MJ FAQ
1.How can I place an order for MCP19110T-E/MJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP19110T-E/MJ 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 MCP19110T-E/MJ reliable?
The price and inventory of MCP19110T-E/MJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP19110T-E/MJ is usually 5 days.
3.What payment methods are accepted for MCP19110T-E/MJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP19110T-E/MJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP19110T-E/MJ?
MCP19110T-E/MJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP19110T-E/MJ 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 MCP19110T-E/MJ?
For technical support, including MCP19110T-E/MJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP19110T-E/MJ requirements.
6.How does Aetrix verify that MCP19110T-E/MJ is sourced from the original manufacturer or authorized distributors?
All MCP19110T-E/MJ 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 MCP19110T-E/MJ meets industry standards.
7.What is the process for return or replacement of MCP19110T-E/MJ?
All MCP19110T-E/MJ units undergo pre-shipment inspection (PSI). If there is an issue with MCP19110T-E/MJ, 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 MCP19110T-E/MJ part is unused and in its original packaging.
Return procedure for MCP19110T-E/MJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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