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Microchip Technology MCP16323T-180E/NG
- Part No.:
- MCP16323T-180E/NG
- Manufacturer:
- Microchip Technology
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
MCP16323T-180E/NG.pdf
- Description:
- IC REG BUCK 1.8V 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,178
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Product details
Overview
MCP16323T-180E/NG from Microchip Technology is a synchronous step-down DC-DC converter IC delivering 3A continuous output current with fixed 1.8V output, ±2% accuracy, 1 MHz switching frequency, and integrated 180 mΩ high-side / 120 mΩ low-side N-channel MOSFETs. It operates from 6.0V–18V input and supports industrial power rails for microcontroller bias supplies and distributed DC-DC conversion.
For engineers reviewing the MCP16323T-180E/NG datasheet, MCP16323T-180E/NG pinout, MCP16323T-180E/NG application, or MCP16323T-180E/NG equivalent, key selection criteria include its QFN-16 (3×3 mm) thermal pad package, peak current mode control architecture, internal soft-start, power-good (PG) open-drain signaling, and UVLO threshold of 5.75V.
Technical Context
The MCP16323T-180E/NG implements fixed-frequency (0.9–1.1 MHz) peak current mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its dual integrated N-MOSFETs-180 mΩ high-side and 120 mΩ low-side-enable up to 95% typical efficiency at 3.3V output while minimizing external component count.
It features internal compensation, VOUT overvoltage protection (103% threshold), undervoltage lockout (5.75V start, 0.65V hysteresis), and thermal shutdown at 170°C with 10°C hysteresis. The PG pin provides 10 ms delay after VOUT exceeds 93% of regulation before asserting active-low power-good status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6.0V to 18V - supports 12V industrial bus and SLA battery inputs without pre-regulation |
| Output Voltage | Fixed 1.8V ±2% - precision-regulated supply for low-voltage logic cores and I/O domains |
| Max Output Current | 3A continuous - sufficient for PIC®/dsPIC® microcontrollers and multi-rail point-of-load systems |
| Switching Frequency | 1 MHz (±10%) - enables compact 4.7 µH inductors and ceramic output capacitors |
| High-Side RDS(ON) | 180 mΩ - reduces conduction loss at high load, critical for >2A operation |
| Low-Side RDS(ON) | 120 mΩ - minimizes freewheeling loss and improves light-load efficiency |
| UVLO Threshold | 5.75V (typical) with 0.65V hysteresis - prevents erratic startup during brownout conditions |
| Thermal Shutdown | 170°C die temperature - protects against sustained overload or poor PCB thermal design |
Pinout & Package
Package: 16-pin QFN (3×3 mm) with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12, 13, 16 SW | Switch node | Connects directly to inductor and bootstrap capacitor; carries high di/dt switching current |
| 2, 3, 11 VIN | Input power supply | Dual-path input for reduced trace inductance; requires local 2×10 µF decoupling |
| 4 SGND | Signal ground | Analog reference and control loop return; must be isolated from noisy PGND |
| 5 VFB | Feedback input | Monitors regulated 1.8V output; internally tied to fixed reference for this variant |
| 6, 7 NC | No connection | Not bonded; must remain unconnected on PCB |
| 8 PG | Power-good indicator | Open-drain output pulled up externally to ≤6V; asserts after 10 ms once VOUT ≥93% of 1.8V |
| 9 EN | Enable control | Logic-high (>2.2V) enables regulator; internally pulled up to 4.2V reference |
| 10 BOOST | Bootstrap drive | Supplies gate voltage for high-side MOSFET via external 22 nF capacitor to SW |
| 14, 15 PGND | Power ground | Low-side switch return path; separate from SGND to suppress switching noise coupling |
| 17 EP | Exposed thermal pad | Must be soldered to solid GND plane for thermal dissipation and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual N-MOSFETs | Eliminates external high-side driver and discrete switches, reducing BOM count and layout complexity |
| Internal soft-start | 4 ms ramp time prevents inrush current and output overshoot during enable transitions |
| Ceramic-capacitor stable | Enables use of low-ESR MLCCs for both input and output filtering, improving transient response |
| VOUT overvoltage protection | Tri-states SW pins if output exceeds 103% of 1.8V (1.854V), safeguarding downstream loads |
| Cycle-by-cycle current limit | Clamps peak switch current at 3.4–4.4A, enabling robust short-circuit recovery without latch-off |
| Stable PFM/PWM transition | Maintains regulation across load range with <1% output deviation in PFM mode at zero load |
Applications
| PIC®/dsPIC® Microcontroller Bias Supply | 12V Industrial Input DC-DC Conversion |
|---|---|
|
Use Scenario: Powering core and I/O rails of 32-bit dsPIC33CH microcontrollers in motor control drives. IC Role / Device Role / Timing Role: Primary 1.8V core supply regulator with fast load-transient response and PG signaling for system sequencing. Use Value: Delivers stable 1.8V at up to 3A with <10 mV ripple under 100 mA–3A dynamic load steps, ensuring deterministic MCU timing. |
Use Scenario: Converting 12V factory bus to 1.8V for FPGA configuration memory and interface logic. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter with thermal monitoring and UVLO for rugged industrial environments. Use Value: Achieves 92% efficiency at 2A/12V→1.8V, reducing heat sink requirements and enabling compact 3×3 mm footprint on dense control boards. |
| DSL Cable Modem Power Management | SLA Battery Powered Devices |
|
Use Scenario: Generating 1.8V supply for DOCSIS 3.1 PHY chipsets operating from 12V wall adapter. IC Role / Device Role / Timing Role: Regulated auxiliary rail with precise voltage accuracy and low-noise PG assertion for boot validation. Use Value: Meets ±2% output tolerance requirement for high-speed SerDes interfaces, preventing link training failures. |
Use Scenario: Powering portable medical sensors powered by 12V sealed lead-acid batteries with wide discharge range (10.5–14.4V). IC Role / Device Role / Timing Role: Wide-input buck regulator with 5.75V UVLO to maintain operation down to end-of-discharge voltage. Use Value: Sustains 1.8V output regulation across full battery range while consuming only 5 µA in shutdown, extending standby life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC24046-YML | Higher 4A rating, 2.2 MHz switching, adjustable output (0.6–5.5V), no fixed 1.8V option | Requires external resistor divider; better suited for designs needing flexibility or higher current | Select MIC24046-YML when adjustable output or >3A capability is required; not drop-in for fixed 1.8V use cases |
| TPS54332DR | 3A, 3.5–28V input, adjustable output, 1.2 MHz, external MOSFETs, no integrated low-side switch | Needs external FETs and compensation network; higher BOM cost and layout effort | Choose TPS54332DR only if input exceeds 18V or thermal constraints require discrete FETs with custom heatsinking |
Compared with MCP16323T-180E/NG, MIC24046-YML offers higher frequency and current but lacks fixed 1.8V configuration, while TPS54332DR trades integration for wider input range and external control - neither matches the exact 1.8V fixed, QFN-16, 6–18V solution footprint and simplicity of MCP16323T-180E/NG.
Availability
MCP16323T-180E/NG is available at Aetrix Electronics and suitable for PIC® microcontroller bias supplies, 12V industrial DC-DC conversion, and DSL cable modem power management requiring stable component supply across production lifecycles.
Supply support for MCP16323T-180E/NG 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 company specializing in microcontrollers, analog, and power management ICs, with broad industrial and automotive qualification coverage.
The MCP16323 product line delivers highly integrated synchronous buck regulators targeting space-constrained, high-efficiency point-of-load applications in industrial, consumer, and medical electronics.
FAQ
What is the output voltage tolerance of the MCP16323T-180E/NG under full load?
The MCP16323T-180E/NG delivers a fixed 1.8V output with ±2% tolerance over temperature and line/load conditions, verified at 1A output current per DS20002284B. This ensures reliable operation for 1.8V logic families such as ARM Cortex-M4 I/O banks and DDR3L termination supplies. The MCP16323T-180E/NG maintains this accuracy without external trimming components due to its factory-trimmed internal reference.
Does the MCP16323T-180E/NG support automatic power-good sequencing with other regulators?
Yes - the MCP16323T-180E/NG features an open-drain PG pin that asserts low until VOUT reaches 93% of 1.8V (1.674V), then waits 10 ms before releasing to high-impedance state. This allows direct connection to enable inputs of downstream regulators for controlled power-up sequencing. The MCP16323T-180E/NG PG output is rated for ≤6V pull-up and supports standard 3.3V or 5V logic interfaces.
Can the MCP16323T-180E/NG operate from a 6V input while delivering 3A at 1.8V?
Yes - the MCP16323T-180E/NG supports 6.0V minimum input and sustains 3A output at 1.8V with >88% typical efficiency per Figure 2-4. At 6V input, the duty cycle reaches ~30%, well above the 7% minimum, ensuring continuous conduction mode and stable regulation. The MCP16323T-180E/NG's UVLO remains inactive (start threshold is 5.75V), allowing reliable startup and operation down to 6V.
How does the MCP16323T-180E/NG handle thermal overload conditions?
The MCP16323T-180E/NG integrates die-temperature sensing and shuts down when junction temperature exceeds 170°C, resuming operation at 160°C due to 10°C hysteresis. This protects against sustained overload or inadequate PCB copper area. Thermal performance is characterized at θJA = 38.5°C/W on a 4-layer board - the MCP16323T-180E/NG requires proper EP grounding and thermal vias for full 3A capability.
Is the MCP16323T-180E/NG pin-compatible with other variants in the MCP16323 family?
No - while all MCP16323 variants share the same QFN-16 (3×3 mm) package and pinout, the MCP16323T-180E/NG is specifically configured for fixed 1.8V output. Other variants (e.g., MCP16323T-330E/NG) have different internal feedback networks and cannot be substituted without verifying VFB routing and PG timing. The MCP16323T-180E/NG pinout is identical, but electrical behavior is variant-specific.
MCP16323T-180E/NG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 6V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MCP16323T-180E/NG FAQ
1.How can I place an order for MCP16323T-180E/NG through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16323T-180E/NG 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 MCP16323T-180E/NG reliable?
The price and inventory of MCP16323T-180E/NG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16323T-180E/NG is usually 5 days.
3.What payment methods are accepted for MCP16323T-180E/NG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16323T-180E/NG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16323T-180E/NG?
MCP16323T-180E/NG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16323T-180E/NG 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 MCP16323T-180E/NG?
For technical support, including MCP16323T-180E/NG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16323T-180E/NG requirements.
6.How does Aetrix verify that MCP16323T-180E/NG is sourced from the original manufacturer or authorized distributors?
All MCP16323T-180E/NG 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 MCP16323T-180E/NG meets industry standards.
7.What is the process for return or replacement of MCP16323T-180E/NG?
All MCP16323T-180E/NG units undergo pre-shipment inspection (PSI). If there is an issue with MCP16323T-180E/NG, 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 MCP16323T-180E/NG part is unused and in its original packaging.
Return procedure for MCP16323T-180E/NG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP16323T-180E/NG Tags
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