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Microchip Technology MCP16312T-E/MSVAO
- Part No.:
- MCP16312T-E/MSVAO
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP16312T-E/MSVAO.pdf
- Description:
- IC REG BUCK ADJ 1A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,070
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Product details
Overview
MCP16312T-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 battery regulation applications.
For engineers reviewing the MCP16312T-E/MSVAO datasheet, MCP16312T-E/MSVAO pinout, MCP16312T-E/MSVAO application, or MCP16312T-E/MSVAO equivalent, this page delivers verified technical context, exact pin functions, confirmed thermal shutdown behavior (+150°C), validated 4.1 V UVLO start threshold, and real-world efficiency data across 4.4–30 V input and 2–24 V output ranges.
Technical Context
The MCP16312T-E/MSVAO implements peak current mode control with internal slope compensation to ensure stability at duty cycles >50%, and uses a fixed-frequency 500 kHz oscillator to maintain constant switching frequency across all load conditions. Its integrated high-side and low-side switches are driven by an internal floating gate driver powered via the BOOST–SW bootstrap network.
This device operates exclusively in PWM mode-no PFM transition-delivering consistent 500 kHz operation, lower output ripple, and predictable EMI profile. It features internal soft-start (300 µs), undervoltage lockout (4.1 V start / 3.6 V stop), and thermal shutdown with 25°C hysteresis, enabling robust local point-of-load regulation in industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.4 V to 30 V - supports direct connection to 12 V/24 V automotive batteries and industrial rails without pre-regulation. |
| Output Voltage Range | 2.0 V to 24 V - set externally via resistor divider; regulated by precise 0.800 V ±1.6% feedback reference. |
| Max Output Current | 1 A continuous - limited by internal current sense and thermal design; derates above 12 V output per characterization. |
| Switching Frequency | 500 kHz ±75 kHz - fixed-frequency PWM-only operation ensures stable EMI filtering and predictable inductor sizing. |
| Quiescent Current (PWM) | 3.8 mA typical at no load - higher than PFM variants but enables consistent low-noise regulation in noise-sensitive systems. |
| UVLO Threshold | 4.1 V typical start, 3.6 V stop - prevents erratic startup during cold-crank or brownout conditions in automotive applications. |
| Thermal Shutdown | +150°C activation with +25°C hysteresis - protects silicon die during sustained overload or poor PCB thermal design. |
Pinout & Package
Package: 8-pin MSOP (3.0 × 4.9 mm) with exposed thermal pad (EP), rated θJA = 211°C/W. EP internally connected to PGND and AGND for enhanced thermal performance and noise isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB | Feedback Input | Connects to resistor divider; regulates output by comparing against 0.800 V internal reference - sets accuracy and loop stability. |
| VCC | Internal Bias Regulator Output | 5.0 V LDO output powering gate drivers; requires 1 µF X7R ceramic bypass capacitor close to pin for transient current delivery. |
| EN | Enable Control | Logic-high (>1.85 V) enables regulator; logic-low (<0.4 V) disables with 3 µA shutdown current - enables system-level power sequencing. |
| VIN | Main Power Input | Accepts 4.4–30 V; supplies both power path and internal bias; requires local 4.7–20 µF ceramic decoupling to minimize input ripple and EMI. |
| PGND | Power Ground | Return path for high-current low-side switch and inductor; must be short-traced to input/output capacitors to reduce ground bounce. |
| SW | Switch Node | Drives external inductor and BOOST capacitor; experiences fast dV/dt edges - layout critical for EMI and efficiency. |
| BOOST | Bootstrap Supply | Provides floating gate drive voltage for high-side MOSFET; requires 100 nF ceramic capacitor between BOOST and SW pins. |
| AGND | Analog Ground | Reference for error amplifier, UVLO, and reference circuits; single-point tie to PGND minimizes noise coupling into control loop. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-only fixed-frequency operation | Eliminates PFM frequency variation and associated output ripple spikes - essential for EMC-compliant designs in infotainment and ADAS systems. |
| Integrated dual N-channel MOSFETs | High-side RDS(on) = 300 mΩ, low-side RDS(on) = 170 mΩ - reduces external component count and conduction losses in compact layouts. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation - meets automotive junction temperature requirements without derating. |
| Internal soft-start | 300 µs controlled VOUT ramp-up - prevents inrush current and overshoot during power-on, reducing stress on output capacitors and downstream loads. |
| Peak current mode control with slope compensation | Enables stable operation up to 94% duty cycle and simplifies loop compensation - supports wide VIN/VOUT ratios without external compensation components. |
Applications
| Automotive Battery Regulation | Industrial 24V DC-DC Conversion |
|---|---|
Use Scenario: Regulating 12 V or 24 V vehicle battery rail to 3.3 V or 5 V for microcontroller, CAN transceiver, or sensor supply. IC Role / Device Role / Timing Role: Primary buck regulator providing stable, low-noise bias for safety-critical ECUs and body control modules. Use Value: AEC-Q100 Grade 1 rating and 150°C thermal shutdown ensure reliable operation under hood temperature extremes and load dump transients. |
Use Scenario: Converting unregulated 24 V industrial bus to 5 V for PLC I/O modules, motor drives, or fieldbus interface circuitry. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering 1 A with minimal external components in space-constrained DIN-rail enclosures. Use Value: 4.4–30 V input range accommodates wide industrial supply tolerances; PWM-only mode avoids interference with analog signal chains. |
| Networking System Bias Supply | Laptop Computer Auxiliary Rail |
Use Scenario: Generating 1.8 V or 3.3 V for Ethernet PHYs, SFP+ modules, or packet processors in enterprise switches and routers. IC Role / Device Role / Timing Role: Secondary buck regulator supplying clean, low-ripple power to high-speed digital interfaces requiring tight voltage tolerance. Use Value: Fixed 500 kHz frequency allows deterministic EMI filter design; internal compensation eliminates need for external compensation network. |
Use Scenario: Providing 5 V auxiliary power for USB-C PD controllers, display backlight drivers, or embedded security ICs in ultrabooks. IC Role / Device Role / Timing Role: Compact, thermally efficient step-down regulator operating from main battery or adapter input in portable computing platforms. Use Value: MSOP-8 package with exposed pad enables high-power density; 3 µA shutdown current extends battery life during sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP16311T-E/MSVAO | Supports automatic PFM/PWM mode switching; 44 µA quiescent current in PFM vs. 3.8 mA in PWM-only mode. | Better light-load efficiency but higher output ripple and variable frequency - suitable for battery-powered IoT sensors, not noise-sensitive audio or RF stages. | Select MCP16311T-E/MSVAO only when ultra-low standby power is prioritized over EMI control and output voltage stability. |
| TPS54202DRCT | 4.5–28 V input, 2 A output, 500 kHz fixed frequency, but lacks AEC-Q100 qualification and has higher 26 µA quiescent current in shutdown. | Targeted at commercial-grade industrial and consumer applications; not validated for automotive temperature or reliability requirements. | Choose TPS54202DRCT for cost-sensitive non-automotive designs where 2 A output and TI's WEBENCH support are advantageous. |
Compared with MCP16311T-E/MSVAO, the MCP16312T-E/MSVAO trades light-load efficiency for EMI predictability and output stability; versus TPS54202DRCT, it offers automotive qualification and lower shutdown current but at reduced output current capability.
Availability
MCP16312T-E/MSVAO is available at Aetrix Electronics and suitable for automotive battery regulation, industrial 24V DC-DC conversion, and networking system bias supply requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for MCP16312T-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs with broad automotive and industrial certification coverage.
The MCP1631x family is designed specifically for high-input-voltage synchronous buck conversion in harsh environments, emphasizing AEC-Q100 compliance, integrated FETs, and simplified layout for space-constrained automotive and industrial power supplies.
FAQ
What is the maximum output voltage supported by the MCP16312T-E/MSVAO?
The MCP16312T-E/MSVAO supports an output voltage range of 2.0 V to 24 V, set externally using a resistor divider referenced to its 0.800 V internal feedback voltage. However, full 1 A output current is guaranteed only up to 12 V; above that, current capability decreases due to thermal and duty-cycle limitations as confirmed in DS20005255C-page 3 Note 2.
Does the MCP16312T-E/MSVAO support PFM mode operation?
No, the MCP16312T-E/MSVAO operates exclusively in PWM mode at a fixed 500 kHz switching frequency. Unlike the MCP16311 variant, PFM mode is disabled in the MCP16312T-E/MSVAO to ensure consistent frequency, lower output ripple, and improved EMI performance - as explicitly stated in DS20005255C-page 1 and Section 4.1.2.
What is the purpose of the BOOST pin on the MCP16312T-E/MSVAO?
The BOOST pin on the MCP16312T-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 to form a bootstrap circuit, enabling full enhancement of the high-side switch during each switching cycle - detailed in DS20005255C-page 10 Section 3.8 and Figure 4-2.
Is the MCP16312T-E/MSVAO qualified for automotive applications?
Yes, the MCP16312T-E/MSVAO is qualified to AEC-Q100 Rev. G Grade 1 standards, supporting operation from -40°C to +125°C ambient temperature. This qualification covers stress testing for temperature cycling, humidity, and lifetime reliability - confirmed in DS20005255C-page 1 Features list and Section 4.1.10.
What thermal protection features does the MCP16312T-E/MSVAO include?
The MCP16312T-E/MSVAO includes overtemperature protection with thermal shutdown activation at +150°C and automatic recovery at +125°C (25°C hysteresis). This protects the IC during sustained overload, poor heatsinking, or high ambient conditions - specified in DS20005255C-page 4 Thermal Characteristics table and Section 4.1.10.
MCP16312T-E/MSVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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-MSOP
MCP16312T-E/MSVAO FAQ
1.How can I place an order for MCP16312T-E/MSVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16312T-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 MCP16312T-E/MSVAO reliable?
The price and inventory of MCP16312T-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 MCP16312T-E/MSVAO is usually 5 days.
3.What payment methods are accepted for MCP16312T-E/MSVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16312T-E/MSVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16312T-E/MSVAO?
MCP16312T-E/MSVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16312T-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 MCP16312T-E/MSVAO?
For technical support, including MCP16312T-E/MSVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16312T-E/MSVAO requirements.
6.How does Aetrix verify that MCP16312T-E/MSVAO is sourced from the original manufacturer or authorized distributors?
All MCP16312T-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 MCP16312T-E/MSVAO meets industry standards.
7.What is the process for return or replacement of MCP16312T-E/MSVAO?
All MCP16312T-E/MSVAO units undergo pre-shipment inspection (PSI). If there is an issue with MCP16312T-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 MCP16312T-E/MSVAO part is unused and in its original packaging.
Return procedure for MCP16312T-E/MSVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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