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Microchip Technology MCP16301T-I/CHY
- Part No.:
- MCP16301T-I/CHY
- Manufacturer:
- Microchip Technology
- Package:
- SOT-23-6
- Datasheet:
-
MCP16301T-I/CHY.pdf
- Description:
- IC REG BUCK ADJ 600MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:12,685
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Product details
Overview
MCP16301T-I/CHY from Microchip Technology is a high-efficiency, fixed-frequency, non-synchronous buck DC-DC converter with integrated 460 mΩ N-channel MOSFET, operating from 4.0V to 30V input and delivering up to 600 mA continuous output current at adjustable 2.0V–15.0V output voltage with ±2% accuracy and 500 kHz switching frequency. It serves as a compact bias supply for PIC® microcontrollers and industrial 24V DC-DC conversion.
For engineers reviewing the MCP16301T-I/CHY datasheet, MCP16301T-I/CHY pinout, MCP16301T-I/CHY application, or MCP16301T-I/CHY equivalent, key selection considerations include its AEC-Q100 qualified operation, internal peak current mode control with slope compensation, SOT-23-6 package thermal resistance (θJA = 190.5°C/W), and bootstrap-driven high-side switch requiring external boost capacitor and Schottky diode.
Technical Context
The MCP16301T-I/CHY implements fixed-frequency (425–550 kHz) peak current mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its architecture integrates a trimmed 0.800 V feedback reference, internal soft-start (300 µs), and undervoltage lockout (UVLO start: 3.5 V, hysteresis: 0.5 V).
It uses a bootstrap-gated high-side N-MOSFET requiring external BOOST capacitor and blocking diode; the gate drive voltage must be maintained between 3.0 V and 5.5 V, typically derived from VOUT for 3.3 V/5.0 V outputs or via Zener shunt for 12 V/15 V outputs. Overtemperature protection disables switching at +150°C and resumes at +120°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.0 V to 30 V - supports wide industrial and automotive input rails without external pre-regulation |
| Output Voltage Range | 2.0 V to 15.0 V - adjustable via external resistor divider; enables single IC across multiple system rail requirements |
| Feedback Voltage | 0.784 V to 0.816 V (±2%) - precise internal reference ensures tight output regulation over temperature and load |
| Switching Frequency | 425–550 kHz (typ. 500 kHz) - enables use of small 10–68 µH inductors and ceramic capacitors for compact layout |
| Max Output Current | 600 mA continuous - guaranteed across full input range and -40°C to +125°C ambient |
| N-MOSFET RDS(ON) | 0.46 Ω - low conduction loss improves efficiency up to 96% at light-to-moderate loads |
| Quiescent Current | 2–7.5 mA active / 7–10 µA shutdown - enables low-power standby modes in battery-backed systems |
Pinout & Package
Package: SOT-23-6 surface-mount package (JEDEC MO-178AA), 1.6 mm × 2.9 mm footprint, 1.1 mm height, rated for -40°C to +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: BOOST | Floating high-side gate drive supply node | Connects to bootstrap capacitor (100 nF) and Schottky blocking diode; supplies >3.0 V to gate for NMOS turn-on |
| 2: GND | Power and signal reference ground | Must be short-traced to input/output capacitor returns to minimize noise coupling into feedback path |
| 3: VFB | Resistor-divider feedback input | Senses output via resistive divider; regulates VOUT to 0.800 V reference; bias current ±10 nA minimizes divider error |
| 4: EN | Logic-enable control input | Active-high (VIH ≥ 1.4 V); pulls <0.4 V to disable; draws only 7–10 µA in shutdown |
| 5: VIN | Main power input (4.0–30 V) | Supplies internal bias and high-side driver; requires local 10 µF ceramic decoupling near pin |
| 6: SW | Switch node connection | Drives external inductor and freewheeling Schottky diode; fast edge rate demands tight layout to reduce EMI |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Peak Current Mode Control | Eliminates need for external compensation components; provides fast transient response and inherent cycle-by-cycle current limiting |
| Internal Soft-Start | 300 µs controlled VOUT ramp prevents inrush current and overshoot during enable |
| Stable with Ceramic Capacitors | Enables use of low-ESR, space-saving X7R/X5R MLCCs for both input and output filtering |
| Overtemperature Protection | Thermal shutdown at +150°C with +30°C hysteresis ensures reliable operation under overload or poor heatsinking |
| Undervoltage Lockout (UVLO) | Starts at 3.5 V, stops at 3.0 V with 0.5 V hysteresis - prevents erratic startup during brownout conditions |
Applications
| PIC® Microcontroller Bias Supply | 24V Industrial DC-DC Conversion |
|---|---|
|
Use Scenario: Powering 3.3 V or 5 V VDD rails for PIC16/PIC18/dsPIC33 microcontrollers in programmable logic controllers and sensor nodes. IC Role / Device Role / Timing Role: Primary step-down regulator providing regulated bias voltage; replaces discrete buck controller + MOSFET solutions. Use Value: Delivers 600 mA at 96% efficiency with minimal external parts-reduces BOM count and PCB area vs. multi-chip alternatives. |
Use Scenario: Converting unregulated 24 V factory bus to 3.3 V or 5 V for I/O modules, fieldbus interfaces, and analog front-ends. IC Role / Device Role / Timing Role: High-input-voltage buck regulator handling wide line transients and load steps in harsh industrial environments. Use Value: AEC-Q100 qualification and -40°C to +125°C operation ensure reliability in extended temperature industrial deployments. |
| DSL/Cable Modem Power | SLA Battery-Powered Devices |
|
Use Scenario: Generating stable 3.3 V and 5 V rails from 12 V or 24 V wall adapters in broadband access equipment. IC Role / Device Role / Timing Role: Secondary DC-DC stage supplying core logic and PHY circuitry; operates with low quiescent current in standby. Use Value: 7–10 µA shutdown current extends standby time; 500 kHz switching allows compact 15 µH inductor and dual 10 µF output caps. |
Use Scenario: Regulating power from sealed lead-acid (SLA) batteries (12 V nominal, 10–14.4 V range) to 3.3 V for portable test instruments or security sensors. IC Role / Device Role / Timing Role: Input-wide buck converter maintaining regulation across full SLA discharge curve without dropout. Use Value: UVLO hysteresis (3.5 V start / 3.0 V stop) prevents cycling near end-of-life; 600 mA capability supports intermittent high-current sensing bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z (Monolithic Power Systems) | 4.5–36 V input, 2 A output, 2 MHz switching, requires external compensation | Higher current and frequency; less suitable for ultra-low-noise or thermally constrained SOT-23 layouts | Choose MP2451DT-LF-Z when >600 mA output or faster transient response is required; verify thermal derating in SOT-23-6 |
| TPS54202DRCT (Texas Instruments) | 4.5–28 V input, 2 A output, integrated FETs, 500 kHz, requires external compensation | Higher current rating and tighter VFB tolerance (±0.5%), but larger 10-pin WSON package | Choose TPS54202DRCT for higher output current or improved reference accuracy; accept larger footprint and layout complexity |
Compared with MP2451DT-LF-Z and TPS54202DRCT, the MCP16301T-I/CHY offers the smallest solution size in SOT-23-6 with internal compensation and AEC-Q100 qualification-making it optimal for space-constrained, automotive-adjacent, or cost-sensitive industrial designs where 600 mA suffices.
Availability
MCP16301T-I/CHY is available at Aetrix Electronics and suitable for PIC® microcontroller bias supplies, 24V industrial DC-DC conversion, and DSL/cable modem power applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 reliability validation.
Supply support for MCP16301T-I/CHY 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, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP16301/H product line delivers highly integrated, AEC-Q100 qualified buck regulators targeting cost-sensitive, space-constrained applications in automotive, industrial, and consumer electronics where simplicity, reliability, and minimal external components are critical.
FAQ
What is the maximum input voltage rating for the MCP16301T-I/CHY?
The MCP16301T-I/CHY has an absolute maximum input voltage rating of 40 V on the VIN and SW pins, but its specified operational input range is 4.0 V to 30 V. Exceeding 30 V may cause premature UVLO stop or reduced efficiency due to increased switching losses; sustained operation above 30 V is not recommended per DS20005004E.
Does the MCP16301T-I/CHY require external compensation components?
No, the MCP16301T-I/CHY features fully internal compensation including error amplifier and slope compensation circuitry. This eliminates the need for external RC networks, simplifying design and reducing bill-of-materials count while maintaining stability across the full 2.0 V–15.0 V output range and -40°C to +125°C temperature range.
How is the output voltage set on the MCP16301T-I/CHY?
The MCP16301T-I/CHY output voltage is set using an external resistor divider connected between VOUT, VFB, and GND. With a precise 0.800 V internal reference, the formula is RTOP = RBOT × (VOUT/0.800 − 1). A 10 kΩ bottom resistor is recommended to balance quiescent current and noise immunity, yielding standard values like 31.6 kΩ for 3.3 V output.
Can the MCP16301T-I/CHY operate with a 12 V output?
Yes, the MCP16301T-I/CHY supports output voltages up to 15.0 V. For 12 V output, a 56 µH inductor is recommended per Table 5-1, and the BOOST supply must be derived externally-typically using a Zener-shunt regulator from VIN-since the internal boot circuit cannot self-charge reliably above 5.5 V.
What thermal performance can be expected from the MCP16301T-I/CHY in SOT-23-6?
The MCP16301T-I/CHY in SOT-23-6 has a junction-to-ambient thermal resistance (θJA) of 190.5°C/W per JEDEC JESD51-3. At 600 mA output and 12 V input, typical power dissipation is ~350 mW; this yields ~67°C rise above ambient, remaining well below the +150°C thermal shutdown threshold with moderate PCB copper area.
MCP16301T-I/CHY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-6
- 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):
- 4V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- 15V
- Current - Output:
- 600mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MCP16301T-I/CHY FAQ
1.How can I place an order for MCP16301T-I/CHY through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16301T-I/CHY 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 MCP16301T-I/CHY reliable?
The price and inventory of MCP16301T-I/CHY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16301T-I/CHY is usually 5 days.
3.What payment methods are accepted for MCP16301T-I/CHY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16301T-I/CHY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16301T-I/CHY?
MCP16301T-I/CHY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16301T-I/CHY 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 MCP16301T-I/CHY?
For technical support, including MCP16301T-I/CHY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16301T-I/CHY requirements.
6.How does Aetrix verify that MCP16301T-I/CHY is sourced from the original manufacturer or authorized distributors?
All MCP16301T-I/CHY 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 MCP16301T-I/CHY meets industry standards.
7.What is the process for return or replacement of MCP16301T-I/CHY?
All MCP16301T-I/CHY units undergo pre-shipment inspection (PSI). If there is an issue with MCP16301T-I/CHY, 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 MCP16301T-I/CHY part is unused and in its original packaging.
Return procedure for MCP16301T-I/CHY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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