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Microchip Technology MCP16311T-E/MNYVAO
- Part No.:
- MCP16311T-E/MNYVAO
- Manufacturer:
- Microchip Technology
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MCP16311T-E/MNYVAO.pdf
- Description:
- IC REG BUCK ADJ 1A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,455
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Product details
Overview
MCP16311T-E/MNYVAO from Microchip Technology is a synchronous step-down DC-DC converter IC with integrated high-side (300 mΩ) and low-side (170 mΩ) N-channel MOSFETs, 500 kHz fixed-frequency PWM/PFM operation, 0.8 V reference voltage, and AEC-Q100 Grade 1 qualification for automotive use. It delivers up to 1 A continuous output current across 2.0–24 V output range from 4.4–30 V input, supporting local point-of-load regulation in industrial and automotive power systems.
For engineers reviewing the MCP16311T-E/MNYVAO datasheet, MCP16311T-E/MNYVAO pinout, MCP16311T-E/MNYVAO application, or MCP16311T-E/MNYVAO equivalent, key selection criteria include its dual-mode PFM/PWM efficiency optimization, integrated thermal shutdown (+150°C), undervoltage lockout (4.1 V start), soft-start (300 µs), and compatibility with 2×3 mm TDFN-9EP packaging for high-density PCB layouts.
Technical Context
The MCP16311T-E/MNYVAO implements peak current mode control with internal slope compensation and a 500 kHz oscillator, enabling fast transient response and stable regulation under input/output transients. Its architecture integrates a 5.0 V internal LDO (VCC) for gate drive bias, separate AGND/PGND planes, and a bootstrap circuit for high-side NMOS switching.
It supports automatic transition between PWM and PFM modes based on load and input conditions-PFM reduces quiescent current to 44 µA at light loads while maintaining regulation, whereas PWM ensures constant frequency and lower ripple at higher currents. The device includes cycle-by-cycle current limiting, overtemperature protection with 25°C hysteresis, and UVLO with 0.5 V hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.4 V to 30 V - Supports wide industrial and automotive battery inputs without external pre-regulation. |
| Output Current | 1 A continuous - Sustains full-rated load at ambient temperatures up to +125°C with proper thermal layout. |
| Feedback Reference Voltage | 0.800 V ±16 mV - Enables precise output setting via external resistor divider; low drift over temperature. |
| Switching Frequency | 425–575 kHz - Fixed nominal 500 kHz enables predictable EMI filtering and inductor sizing. |
| High-Side RDS(on) | 0.3 Ω typical - Minimizes conduction loss during high-duty-cycle operation (e.g., 5 V out from 12 V in). |
| Low-Side RDS(on) | 0.17 Ω typical - Reduces freewheeling loss and improves light-load efficiency in synchronous buck topology. |
| Quiescent Current (PFM) | 44 µA typical - Enables >10-year battery life in always-on automotive modules with intermittent load. |
| UVLO Threshold | 4.1 V start / 3.6 V stop - Prevents erratic startup during cold-crank or brownout conditions in 12 V vehicle systems. |
Pinout & Package
Package: 2×3 mm TDFN-9 with exposed thermal pad (EP), RoHS-compliant, moisture-sensitive level 1. Thermal resistance θJA = 52.5°C/W enables high-power density without heatsink in standard FR-4 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB | Feedback input | Connects to resistor divider to set output voltage; 0.8 V reference enables accurate regulation independent of load or line variation. |
| VCC | Internal bias regulator output | Supplies 5.0 V to gate drivers; requires 1 µF X7R ceramic capacitor close to pin for stable high-peak-current drive. |
| EN | Enable logic input | Logic-high (>1.85 V) enables converter; logic-low (<0.4 V) disables with 3 µA shutdown current-no pull-up required. |
| VIN | Main power input | Accepts 4.4–30 V; must be decoupled with ≥2×10 µF X7R ceramic capacitors near VIN and PGND pins. |
| PGND | Power ground return | Carries high di/dt switch currents; shortest possible trace to input/output capacitors minimizes EMI and voltage spikes. |
| SW | Switch node | Connects to inductor and boost capacitor; experiences fast dV/dt edges-requires tight layout and guard ring. |
| BOOST | Bootstrap supply | Provides floating gate drive for high-side MOSFET; capacitor between BOOST and SW replenishes charge each cycle. |
| AGND | Analog ground reference | Reference for error amplifier, UVLO, and thermal sensors; connects to PGND at single point to avoid noise coupling. |
| EP | Exposed thermal pad | Internally tied to PGND and AGND; soldered to PCB copper pour for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous switches | Eliminates need for external MOSFETs and driver ICs-reduces BOM count and layout area by >40% vs discrete solutions. |
| Automatic PFM/PWM mode selection | Maintains >85% efficiency from 1 mA to 1 A load without firmware or external control-ideal for variable-duty-cycle applications. |
| Internal compensation network | Removes requirement for external Type II/III compensation components-simplifies design and improves production yield. |
| Thermal shutdown with hysteresis | Shuts down at +150°C and resumes at +125°C-prevents thermal runaway while avoiding oscillation near trip point. |
| Soft-start timing | 300 µs controlled ramp prevents inrush current and output overshoot during power-up-no external timing capacitor needed. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C junction operation-meets automotive electronics reliability requirements without derating. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Regulating 12 V battery input to 3.3 V for microcontroller, CAN transceiver, and sensor interface circuits in door modules or lighting controllers. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing isolated, low-noise, thermally robust local power with fast load-step response. Use Value: Enables direct connection to vehicle battery without pre-regulator; AEC-Q100 qualification ensures functional safety compliance and long-term field reliability. |
Use Scenario: Generating 5 V/1 A from 24 V industrial bus to power digital I/O isolators, ADCs, and FPGA configuration circuits in programmable logic controllers. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with integrated current limit and thermal protection for unattended operation in enclosed cabinets. Use Value: Delivers full 1 A output at +70°C ambient without airflow-reducing need for forced cooling and improving system MTBF. |
| Set-Top Box Main Bias Rail | Laptop Embedded Controller (EC) Supply |
Use Scenario: Converting 12 V wall adapter output to 5 V for SoC, memory, and USB hub in consumer media devices with strict standby power limits. IC Role / Device Role / Timing Role: Efficiency-optimized buck converter operating in PFM mode during deep sleep to minimize no-load consumption. Use Value: Achieves <50 µA input current at zero load-meeting Energy Star Tier 2 standby power requirements without auxiliary circuits. |
Use Scenario: Providing tightly regulated 3.3 V supply to embedded controller managing keyboard, touchpad, and battery charging functions in ultrabooks. IC Role / Device Role / Timing Role: Low-noise, fast-transient buck regulator with soft-start and enable control synchronized to system power sequencing. Use Value: Maintains ±1% output accuracy across -20°C to +85°C ambient-ensuring reliable EC boot and firmware execution under thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP16312T-E/MNYVAO | PWM-only operation (no PFM); 3.8 mA quiescent current in PWM mode vs. 44 µA in PFM mode | Better suited for noise-sensitive applications requiring constant 500 kHz switching and minimal output ripple | Select when EMI filtering is prioritized over ultra-low standby power; same pinout and package |
| TPS54202DRCT | Lower input range (4.5–28 V); 2 A output capability; no AEC-Q100 qualification; 500 kHz fixed frequency | Targeted at commercial-grade industrial and computing applications-not qualified for automotive environments | Choose for higher current headroom and TI ecosystem support; requires redesign of feedback and compensation networks |
Compared with MCP16312T-E/MNYVAO and TPS54202DRCT, the MCP16311T-E/MNYVAO uniquely balances automotive-grade reliability, ultra-low-light-load efficiency, and integrated thermal management-making it optimal for cost-constrained, thermally demanding, and battery-sensitive designs where both performance and qualification matter.
Availability
MCP16311T-E/MNYVAO is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, set-top box bias rails, and laptop embedded controller applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MCP16311T-E/MNYVAO 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 microcontrollers, analog devices, and power management ICs, serving automotive, industrial, and consumer markets with vertically integrated silicon and software solutions.
The MCP16311/2 product line delivers compact, high-efficiency synchronous buck regulators targeting space-constrained, thermally demanding applications in automotive and industrial systems-designed specifically for seamless integration into AEC-Q100-compliant power architectures.
FAQ
What is the maximum output voltage supported by the MCP16311T-E/MNYVAO?
The MCP16311T-E/MNYVAO supports an output voltage range of 2.0 V to 24 V, set via an external resistor divider connected to the VFB pin. However, for outputs above 12 V, the maximum continuous output current is reduced below 1 A due to duty-cycle and thermal constraints-verified in Figure 2-7 of the datasheet.
Does the MCP16311T-E/MNYVAO require external compensation components?
No, the MCP16311T-E/MNYVAO features internal compensation including error amplifier and slope compensation circuitry. This eliminates the need for external RC networks typically required in voltage-mode controllers-simplifying design and improving production consistency across operating conditions.
How does the PFM/PWM mode switching work in the MCP16311T-E/MNYVAO?
The MCP16311T-E/MNYVAO automatically transitions between PFM and PWM modes based on load current, input voltage, and output voltage. At light loads, it enters PFM mode to reduce quiescent current to 44 µA; at higher loads, it switches to fixed 500 kHz PWM for lower ripple-thresholds are defined in Figure 2-17 of the datasheet.
What thermal protection mechanisms are built into the MCP16311T-E/MNYVAO?
The MCP16311T-E/MNYVAO includes overtemperature protection that disables switching when die temperature reaches +150°C, with automatic recovery at +125°C (25°C hysteresis). This prevents thermal damage during overload or poor heatsinking while avoiding oscillatory shutdown behavior.
Can the MCP16311T-E/MNYVAO operate from a 5 V input to generate 3.3 V output?
Yes, the MCP16311T-E/MNYVAO can operate from 5 V input to generate 3.3 V output, provided the minimum input voltage requirement (output voltage plus headroom) is met. With 3.3 V output, the practical minimum input is ~4.1 V-verified by UVLO start threshold and Figure 2-19 in the datasheet.
MCP16311T-E/MNYVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.4V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- 24V
- Current - Output:
- 1A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
MCP16311T-E/MNYVAO FAQ
1.How can I place an order for MCP16311T-E/MNYVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16311T-E/MNYVAO 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 MCP16311T-E/MNYVAO reliable?
The price and inventory of MCP16311T-E/MNYVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16311T-E/MNYVAO is usually 5 days.
3.What payment methods are accepted for MCP16311T-E/MNYVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16311T-E/MNYVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16311T-E/MNYVAO?
MCP16311T-E/MNYVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16311T-E/MNYVAO 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 MCP16311T-E/MNYVAO?
For technical support, including MCP16311T-E/MNYVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16311T-E/MNYVAO requirements.
6.How does Aetrix verify that MCP16311T-E/MNYVAO is sourced from the original manufacturer or authorized distributors?
All MCP16311T-E/MNYVAO 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 MCP16311T-E/MNYVAO meets industry standards.
7.What is the process for return or replacement of MCP16311T-E/MNYVAO?
All MCP16311T-E/MNYVAO units undergo pre-shipment inspection (PSI). If there is an issue with MCP16311T-E/MNYVAO, 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 MCP16311T-E/MNYVAO part is unused and in its original packaging.
Return procedure for MCP16311T-E/MNYVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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