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Microchip Technology MCP16312-E/MSVAO
- Part No.:
- MCP16312-E/MSVAO
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP16312-E/MSVAO.pdf
- Description:
- IC REG BUCK ADJ 1A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,732
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Product details
Overview
MCP16312-E/MSVAO from Microchip Technology is a synchronous step-down DC-DC converter IC with fixed 500 kHz PWM-only operation, integrated high-side (300 mΩ) and low-side (170 mΩ) N-channel MOSFETs, 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 noise-sensitive systems.
For engineers reviewing the MCP16312-E/MSVAO datasheet, MCP16312-E/MSVAO pinout, MCP16312-E/MSVAO application, or MCP16312-E/MSVAO equivalent, key selection criteria include its PWM-only mode (no PFM), thermal shutdown at +150°C with 25°C hysteresis, UVLO start/stop at 4.1 V / 3.6 V, 44 µA quiescent current in non-switching state, and MSOP-8 package with exposed thermal pad.
Technical Context
The MCP16312-E/MSVAO implements peak current mode control with internal slope compensation to ensure stability across wide load and input ranges. Its fixed-frequency 500 kHz PWM architecture eliminates variable-frequency ripple inherent in PFM operation, making it suitable for EMI-constrained environments such as automotive infotainment and industrial control.
It integrates a 5.0 V internal LDO (VCC) for gate drive bias, requires external bootstrap capacitor between BOOST and SW pins, and uses a resistor divider on VFB to set output voltage. The device features cycle-by-cycle current limiting, undervoltage lockout with hysteresis, and overtemperature protection that disables switching above +150°C and resumes at +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 500 kHz fixed - enables predictable EMI filtering and stable loop compensation without frequency variation. |
| Output Current | 1 A continuous - supports mid-power point-of-load applications without external current boosting. |
| Input Voltage Range | 4.4 V to 30 V - accommodates 12 V and 24 V automotive and industrial rails with headroom margin. |
| Feedback Reference | 0.800 V ±16 mV - sets precise output voltage via external resistor divider; low tolerance minimizes output error. |
| Quiescent Current | 44 µA (non-switching) - enables ultra-low standby power in always-on systems like telematics modules. |
| Thermal Shutdown | +150°C with +25°C hysteresis - prevents thermal runaway while allowing recovery without external reset logic. |
| UVLO Threshold | Starts at 4.1 V, stops at 3.6 V - ensures reliable startup under weak battery conditions and avoids brownout oscillation. |
Pinout & Package
The MCP16312-E/MSVAO is housed in an 8-pin MSOP package with exposed thermal pad (EP), optimized for thermal performance in space-constrained PCB layouts. Pin 9 (EP) is internally connected to both PGND and AGND and must be soldered to a thermal pad on the PCB for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB | Feedback input | Connects to resistor divider to regulate output voltage; 0.8 V reference enables accurate setting of 2–24 V outputs. |
| VCC | Internal bias regulator output | Provides 5.0 V for gate drivers; requires 1 µF X7R ceramic capacitor to AGND for stable high-current pulse delivery. |
| EN | Enable control input | Logic-high (>1.85 V) enables regulation; logic-low (<0.4 V) disables device and reduces input current to 3 µA typical. |
| VIN | Main power input | Accepts 4.4–30 V; requires local 4.7–20 µF ceramic decoupling to PGND for switch-node current sourcing. |
| PGND | Power ground return | Low-impedance path for high di/dt switch currents; must be routed short and separate from AGND until single-point connection. |
| SW | Switch node | Connects to inductor and bootstrap capacitor; carries full switching waveform (0 V to VIN + VBOOST); requires tight layout. |
| BOOST | High-side gate drive supply | Connected to SW via 100 nF ceramic capacitor; supplies floating voltage to turn on high-side MOSFET. |
| AGND | Analog reference ground | Reference for feedback amplifier and internal reference; must be isolated from noisy PGND except at one star point. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-only operation | Eliminates PFM-induced frequency jitter and output ripple variability-critical for EMC-compliant automotive designs. |
| Integrated dual MOSFETs | 300 mΩ high-side + 170 mΩ low-side N-channel switches reduce conduction losses and eliminate external FET layout complexity. |
| AEC-Q100 Grade 1 | Qualified for -40°C to +125°C junction operation-enables deployment in engine bay and ADAS power supplies without derating. |
| Internal soft-start | 300 µs controlled VOUT ramp prevents inrush current and overshoot during enable transitions-reduces stress on output capacitors. |
| Peak current mode control | Enables fast transient response and simplified loop compensation-supports stable regulation under dynamic load steps up to 800 mA. |
Applications
| Automotive Battery Regulation | Industrial 24V DC-DC Conversion |
|---|---|
Use Scenario: Regulating 12 V or 24 V vehicle battery to 3.3 V or 5 V for microcontroller bias in body control modules. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering clean, low-noise power to PIC®/dsPIC® MCUs and CAN transceivers. Use Value: PWM-only operation ensures consistent 500 kHz switching frequency for predictable EMI filtering; AEC-Q100 Grade 1 guarantees reliability across temperature extremes. | Use Scenario: Converting 24 V industrial rail to 5 V for PLC I/O modules and sensor interface circuitry. IC Role / Device Role / Timing Role: Local point-of-load regulator providing tightly regulated, low-quiescent-power supply in distributed control systems. Use Value: 44 µA non-switching quiescent current extends system uptime during standby; integrated MOSFETs simplify BOM and improve thermal efficiency. |
| Networking Systems Power | Laptop Computer Bias Supply |
Use Scenario: Generating 3.3 V or 5 V from 12 V intermediate bus in Ethernet switches and PoE injectors. IC Role / Device Role / Timing Role: Secondary buck regulator supplying power to PHYs, MAC controllers, and management microcontrollers. Use Value: Fixed 500 kHz frequency allows standardized filter design across product families; thermal shutdown protects against airflow-blocked enclosures. | Use Scenario: Providing auxiliary 3.3 V or 5 V bias for embedded controllers and USB hub logic in portable computing platforms. IC Role / Device Role / Timing Role: Compact, high-efficiency step-down regulator operating from main battery or adapter input. Use Value: MSOP-8 package with EP enables high power density; UVLO hysteresis prevents cycling during battery sag during wake-up events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 36 V max input, 0.8 V ref, 0.5 A output, no AEC-Q100 rating, 2 MHz switching | Lower current capability and no automotive qualification; suited for consumer-grade 5 V bias rails | Select when higher switching frequency and smaller inductors are prioritized over current rating and automotive compliance. |
| TPS54202DDCR | 6 V to 28 V input, 0.8 V ref, 2 A output, integrated compensation, no AEC-Q100 Grade 1 | Higher output current and internal compensation reduce external component count but lack automotive qualification | Choose for industrial or telecom applications requiring >1 A output where AEC-Q100 is not mandated. |
Compared with MP2451DT-LF-Z and TPS54202DDCR, the MCP16312-E/MSVAO uniquely combines AEC-Q100 Grade 1 qualification, 1 A output, and PWM-only operation-making it the only option among the three qualified for under-hood automotive use with deterministic EMI behavior.
Availability
MCP16312-E/MSVAO is available at Aetrix Electronics and suitable for automotive battery regulation, industrial 24V DC-DC conversion, and networking systems power requiring stable component supply across extended temperature and long production lifecycles.
Supply support for MCP16312-E/MSVAO 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 leading provider of microcontrollers, analog devices, and power management ICs, serving automotive, industrial, and communications markets with high-reliability silicon solutions.
The MCP16312-E/MSVAO belongs to Microchip's high-voltage synchronous buck regulator product line, designed specifically for robust, noise-immune DC-DC conversion in automotive and harsh-environment applications.
FAQ
What is the primary functional difference between MCP16312-E/MSVAO and MCP16311?
The MCP16312-E/MSVAO operates exclusively in PWM mode at a fixed 500 kHz frequency, whereas the MCP16311 supports automatic PFM/PWM mode switching. This makes the MCP16312-E/MSVAO ideal for noise-sensitive applications where variable-frequency ripple must be avoided. Both share identical pinout, package, and core architecture-but the MCP16312-E/MSVAO disables PFM logic permanently.
Does MCP16312-E/MSVAO require external compensation components?
No, the MCP16312-E/MSVAO features internal compensation for its peak current mode control loop. No external RC network is needed for basic operation, though inductor value selection must follow Microchip's Table 5-1 guidelines to ensure proper slope compensation across output voltages. This simplifies design and improves consistency across production units.
What is the role of the BOOST pin on MCP16312-E/MSVAO?
The BOOST pin on the MCP16312-E/MSVAO supplies the floating gate drive voltage for the integrated high-side N-channel MOSFET. It must be connected to the SW node via a 100 nF ceramic capacitor. During low-side conduction, this capacitor charges; during high-side conduction, it provides the elevated voltage needed to fully enhance the high-side switch-enabling efficient synchronous rectification.
Can MCP16312-E/MSVAO regulate output voltages above 12 V?
Yes, the MCP16312-E/MSVAO supports output voltages up to 24 V per its datasheet, but maximum output current is reduced above 12 V due to duty cycle and thermal constraints. At 24 V output, continuous current is limited to less than 1 A-designers should consult Figure 2-7 (Max IOUT vs. VIN) and perform thermal analysis using θJA = 211°C/W for the MSOP-8 package.
How does the EN pin behavior affect system-level power sequencing?
The EN pin of the MCP16312-E/MSVAO provides precise control over startup and shutdown: applying >1.85 V enables regulation with 300 µs soft-start, while pulling <0.4 V disables the IC and reduces input current to 3 µA typical. This enables clean power sequencing in multi-rail systems-e.g., enabling MCU logic before analog subsystems-and supports low-power sleep modes without external load switches.
MCP16312-E/MSVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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-MSOP
MCP16312-E/MSVAO FAQ
1.How can I place an order for MCP16312-E/MSVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16312-E/MSVAO 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 MCP16312-E/MSVAO reliable?
The price and inventory of MCP16312-E/MSVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16312-E/MSVAO is usually 5 days.
3.What payment methods are accepted for MCP16312-E/MSVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16312-E/MSVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16312-E/MSVAO?
MCP16312-E/MSVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16312-E/MSVAO 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 MCP16312-E/MSVAO?
For technical support, including MCP16312-E/MSVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16312-E/MSVAO requirements.
6.How does Aetrix verify that MCP16312-E/MSVAO is sourced from the original manufacturer or authorized distributors?
All MCP16312-E/MSVAO 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 MCP16312-E/MSVAO meets industry standards.
7.What is the process for return or replacement of MCP16312-E/MSVAO?
All MCP16312-E/MSVAO units undergo pre-shipment inspection (PSI). If there is an issue with MCP16312-E/MSVAO, 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 MCP16312-E/MSVAO part is unused and in its original packaging.
Return procedure for MCP16312-E/MSVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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