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Microchip Technology MCP16323T-150E/NG
- Part No.:
- MCP16323T-150E/NG
- Manufacturer:
- Microchip Technology
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
MCP16323T-150E/NG.pdf
- Description:
- IC REG BUCK 1.5V 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,277
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Product details
Overview
MCP16323T-150E/NG from Microchip Technology is a synchronous step-down DC-DC converter delivering 3A continuous output at fixed 1.5V with ±2% accuracy, operating from 6.0V–18V input and achieving up to 95% typical efficiency. It integrates 180 mΩ high-side and 120 mΩ low-side N-channel MOSFETs, employs peak current mode control at 1 MHz, and includes power-good (PG) indication for system sequencing in industrial and embedded power rails.
For engineers reviewing the MCP16323T-150E/NG datasheet, MCP16323T-150E/NG pinout, MCP16323T-150E/NG application, or MCP16323T-150E/NG equivalent, this device serves as a compact, thermally robust solution for 12V-input distributed supplies requiring tight regulation, fast transient response, and integrated overvoltage/overtemperature protection without external compensation.
Technical Context
The MCP16323T-150E/NG implements fixed-frequency (0.9–1.1 MHz) peak current mode control with internal slope compensation and a 0.9V reference for feedback. Its architecture supports both PWM and PFM modes, with automatic transition between them based on load-enabling high light-load efficiency while maintaining tight regulation under dynamic conditions.
It features integrated high-side and low-side N-MOSFETs with validated RDS(ON) values (180 mΩ / 120 mΩ), a dedicated BOOST pin for gate drive replenishment via external ceramic capacitor, and dual ground paths (SGND and PGND) to isolate analog control circuitry from switching noise-critical for stable operation with ceramic output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6.0V to 18V - supports wide-range industrial and automotive 12V bus inputs with UVLO start at 5.75V |
| Output Voltage | Fixed 1.5V ±2% - factory-trimmed for precision biasing of dsPIC®/PIC® microcontrollers and FPGAs |
| Maximum Output Current | 3A continuous - sustained delivery with thermal shutdown at 170°C and hysteresis of 10°C |
| Switching Frequency | 1 MHz (±10%) - enables small 4.7 µH inductors and compact 2×22 µF ceramic output filter |
| High-Side RDS(ON) | 180 mΩ typical - reduces conduction loss and improves full-load efficiency up to 95% |
| Low-Side RDS(ON) | 120 mΩ typical - minimizes freewheeling loss and supports high duty-cycle operation down to ~8.3% min VIN/VOUT ratio |
| Power Good (PG) Delay | 10 ms release timer - ensures stable VOUT before asserting open-drain PG signal for downstream sequencing |
Pinout & Package
Package: 3×3 mm QFN-16 with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12, 13, 16 SW | Switch node | Drain connection of low-side NMOS and source of high-side NMOS; connects directly to inductor and BOOST capacitor |
| 2, 3, 11 VIN | Input supply | Dual-purpose: powers internal bias circuits and high-side gate driver; requires local 2×10 µF decoupling |
| 4 SGND | Signal ground | Analog reference and control loop return; must be isolated from PGND except at single-point PCB tie |
| 5 VFB | Feedback input | Monitors regulated 1.5V output directly (fixed version); no external divider required |
| 6–7 NC | No connection | Unbonded pins; must remain unconnected and unpopulated on PCB |
| 8 PG | Power good indicator | Open-drain active-low output; pulled up externally to ≤6V; asserts after 10 ms once VOUT > 93% of 1.5V |
| 9 EN | Enable input | Logic-compatible enable (VIH ≥ 2.2V, VIL ≤ 0.8V); internally pulled up to 4.2V; draws ≤5 µA in shutdown |
| 10 BOOST | Bootstrap voltage | Drives high-side NMOS gate; requires 22 nF ceramic cap between BOOST and SW for reliable 100% duty cycle margin |
| 14–15 PGND | Power ground | Return path for low-side NMOS and synchronous rectifier; separate from SGND to suppress switching noise coupling |
| 17 EP | Exposed thermal pad | Electrically isolated copper pad; must be soldered to solid GND plane for thermal dissipation (θJA = 38.5°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous switches | 180 mΩ high-side + 120 mΩ low-side NMOS eliminate external diode losses and enable >95% efficiency at 3A |
| Internal compensation | Full error amplifier + slope compensation integrated - no external RC network needed for stability with ceramic output caps |
| Power Good (PG) supervision | Monitors VOUT undervoltage (93% threshold) and asserts open-drain PG after 10 ms delay - enables safe system power sequencing |
| Robust protection suite | Includes UVLO (5.75V start), overtemperature shutdown (170°C), VOUT overvoltage lockout (103%), and cycle-by-cycle current limit (3.8A typ) |
| Soft-start and startup control | Internal 4 ms soft-start prevents inrush current and output overshoot; BOOST pre-charge ensures reliable high-side turn-on at power-up |
Applications
| PIC®/dsPIC® Microcontroller Bias Supply | 12V Industrial Input DC-DC Conversion |
|---|---|
Use Scenario: Powering core logic and I/O of 3.3V/1.5V domain PIC® and dsPIC® MCUs in programmable logic controllers and sensor nodes. IC Role / Device Role / Timing Role: Primary 1.5V core regulator with precise ±2% output tolerance and fast load transient response (<10 µs recovery). Use Value: Eliminates need for external LDO post-regulation; maintains MCU timing integrity across -40°C to +125°C junction range. |
Use Scenario: Converting unregulated 12V rail in industrial HMIs, motor drives, and fieldbus gateways to stable 1.5V for FPGA configuration or ADC reference. IC Role / Device Role / Timing Role: High-efficiency buck stage delivering 3A with minimal thermal footprint in space-constrained enclosures. Use Value: Achieves 95% efficiency at full load, reducing heatsink requirements and enabling fanless operation in sealed environments. |
| DSL Cable Modems | SLA Battery Powered Devices |
Use Scenario: Generating 1.5V supply for PHY layer ICs and packet processors in broadband access equipment operating from 12V wall adapters. IC Role / Device Role / Timing Role: Main DC-DC converter with PG signaling to coordinate boot sequence with Ethernet MAC and DSP subsystems. Use Value: Low 5 µA shutdown current extends standby time; PFM mode maintains >85% efficiency at 10 mA load. |
Use Scenario: Regulating power from 12V sealed lead-acid batteries in portable test instruments and remote telemetry units. IC Role / Device Role / Timing Role: Primary step-down regulator supporting wide VIN range (6–18V) as battery discharges from 12.8V to 10.5V. Use Value: UVLO hysteresis (0.65V) prevents oscillation during brown-out; thermal shutdown protects against overcharge-induced ambient rise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC24046-1.5YMT-TZ | Fixed 1.5V output, 4A rating, 2.2 MHz switching, integrated inductor option available | Better suited for ultra-compact designs where board area is constrained; higher frequency allows smaller passive components | Select when needing >3A headroom or integrated inductor simplification; not pin-compatible with MCP16323T-150E/NG |
| TPS54331DR | Adjustable 0.8–6V output, 3A, 570 kHz, external compensation required, no PG pin | Lacks power-good signaling and internal compensation; requires additional feedback resistors and compensation network | Choose only if adjustable output and lower EMI are prioritized over ease of use and system sequencing capability |
Compared with MIC24046-1.5YMT-TZ and TPS54331DR, the MCP16323T-150E/NG offers superior integration (no external compensation, built-in PG), tighter fixed-output tolerance (±2% vs ±3%), and optimized thermal performance in the 3×3 QFN package-making it ideal for cost-sensitive, thermally demanding industrial applications where reliability and simplicity are critical.
Availability
MCP16323T-150E/NG is available at Aetrix Electronics and suitable for PIC® microcontroller biasing, 12V industrial DC-DC conversion, and DSL modem power management requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for MCP16323T-150E/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 devices, and power management ICs, with a focus on industrial, automotive, and IoT applications.
The MCP16323 series was designed specifically for high-efficiency, high-current synchronous buck conversion in space-constrained industrial and embedded systems-emphasizing integration, thermal robustness, and system-level features like PG signaling and internal compensation.
FAQ
What is the output voltage tolerance of the MCP16323T-150E/NG?
The MCP16323T-150E/NG delivers a fixed 1.5V output with ±2% tolerance over temperature and line/load conditions. This specification applies in PWM mode at IOUT = 1A and is guaranteed across the full -40°C to +125°C junction temperature range, ensuring reliable core voltage for sensitive digital loads without external trimming.
Does the MCP16323T-150E/NG require external compensation components?
No, the MCP16323T-150E/NG includes fully integrated compensation circuitry-error amplifier, slope compensation, and internal feedback network-eliminating the need for external RC networks. This enables stable operation with ceramic output capacitors and simplifies design validation for industrial power supplies.
How does the Power Good (PG) pin function on the MCP16323T-150E/NG?
The PG pin on the MCP16323T-150E/NG is an open-drain output that remains low until VOUT exceeds 93% of 1.5V (1.395V), then waits 10 ms before releasing. It can be pulled up to any voltage ≤6V and is used to synchronize downstream power sequencing-ensuring peripherals power up only after stable 1.5V is established.
What thermal management provisions does the MCP16323T-150E/NG include?
The MCP16323T-150E/NG incorporates overtemperature protection that disables switching at 170°C die temperature and resumes at 160°C. Its 3×3 mm QFN package features an exposed thermal pad (EP) requiring direct solder connection to a PCB ground plane-achieving θJA = 38.5°C/W with a 4-layer board and 13.5 in² internal ground plane.
Can the MCP16323T-150E/NG operate with input voltages below 6V?
No-the MCP16323T-150E/NG has a specified minimum input voltage of 6.0V due to its internal UVLO threshold of 5.75V (typical). Operation below this level will prevent startup or cause erratic behavior; for sub-6V applications, alternative regulators such as the MCP16301 series should be evaluated.
MCP16323T-150E/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):
- 1.5V
- 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-150E/NG FAQ
1.How can I place an order for MCP16323T-150E/NG through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16323T-150E/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-150E/NG reliable?
The price and inventory of MCP16323T-150E/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-150E/NG is usually 5 days.
3.What payment methods are accepted for MCP16323T-150E/NG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16323T-150E/NG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16323T-150E/NG?
MCP16323T-150E/NG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16323T-150E/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-150E/NG?
For technical support, including MCP16323T-150E/NG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16323T-150E/NG requirements.
6.How does Aetrix verify that MCP16323T-150E/NG is sourced from the original manufacturer or authorized distributors?
All MCP16323T-150E/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-150E/NG meets industry standards.
7.What is the process for return or replacement of MCP16323T-150E/NG?
All MCP16323T-150E/NG units undergo pre-shipment inspection (PSI). If there is an issue with MCP16323T-150E/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-150E/NG part is unused and in its original packaging.
Return procedure for MCP16323T-150E/NG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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