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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Microchip Technology MCP16301T-450E/CHVAO

Name: MCP16301T-450E/CHVAO
Brand: Microchip Technology
SKU: MCP16301T-450E/CHVAO
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MCP16301T-450E/CHVAO

Manufacturer:: Microchip Technology

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: SOT-23-6

Datasheet:: MCP16301T-450E/CHVAO.pdf

Description:: IC REG BUCK ADJ 600MA SOT23-6

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Product details

Overview

MCP16301T-450E/CHVAO from Microchip Technology is a high-efficiency, fixed-frequency, step-down DC-DC converter with integrated 460 mΩ N-channel MOSFET, operating from 4.0V to 30V input and delivering up to 600 mA 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-450E/CHVAO datasheet, MCP16301T-450E/CHVAO pinout, MCP16301T-450E/CHVAO application, or MCP16301T-450E/CHVAO equivalent, key selection criteria include its AEC-Q100 qualified operation, internal peak current mode control with soft-start and overtemperature protection, SOT-23-6 package footprint, and compatibility with ceramic output capacitors without external compensation.

Technical Context

The MCP16301T-450E/CHVAO 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 high-side N-channel MOSFET driver powered by a bootstrap capacitor connected between BOOST and SW pins, requiring external Schottky diode and inductor for non-synchronous buck operation.

It features an internally trimmed 0.800 V feedback reference (±2% over temperature), undervoltage lockout with 3.5 V start threshold and 0.5 V hysteresis, and thermal shutdown at +150°C with +120°C restart. The device supports adjustable output via resistor divider on VFB and delivers stable regulation across -40°C to +125°C junction temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.0 V to 30 V - supports wide industrial and automotive input rails including 12 V, 24 V, and unregulated wall adapters.
Output Voltage Range	2.0 V to 15.0 V - set externally via resistor divider; enables direct biasing of MCU cores, I/O, and analog peripherals.
Max Output Current	600 mA continuous - sufficient for powering PIC® MCUs, dsPIC® DSCs, and small logic loads without derating at +25°C ambient.
Switching Frequency	500 kHz typical - enables use of small 15 µH inductors (e.g., 3.3 V output) and reduces EMI compared to lower-frequency alternatives.
Feedback Voltage	0.800 V ±2% - precise internal reference ensures tight output regulation even under line/load transients.
R_DS(ON)	460 mΩ - low conduction loss improves efficiency up to 96% and reduces thermal stress in SOT-23-6 package.
Quiescent Current	2 mA typical - minimizes standby power draw in always-on systems; drops to 7 µA in shutdown mode.
UVLO Threshold	3.5 V start / 3.0 V stop - prevents erratic startup during brown-out conditions while ensuring reliable turn-on.

Pinout & Package

Package: SOT-23-6 surface-mount package with 1.3 mm × 2.9 mm footprint and 0.95 mm height - compatible with standard reflow processes and space-constrained PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1: BOOST	Floating gate drive supply node	Connects to bootstrap capacitor; supplies >3.0 V bias to NMOS gate for high-side switching; requires external Schottky diode for recharge path.
2: GND	Power and signal reference ground	Low-impedance return for input/output capacitors, inductor, and internal circuitry; must be routed with minimal trace length to reduce noise coupling.
3: VFB	Output voltage sensing input	Accepts 0.800 V reference point from external resistor divider; determines regulated output voltage (V_OUT = 0.8 × (1 + R_TOP/R_BOT)).
4: EN	Logic-level enable control	Active-high input (VIH ≥ 1.4 V); disables switching and reduces IQ to 7 µA when pulled low (<0.4 V); must not float.
5: VIN	Main power input	Accepts 4.0–30 V DC; powers internal regulator and high-side driver; requires local 10 µF ceramic decoupling capacitor.
6: SW	Internal switch node	Connects to inductor and freewheeling diode; carries high dv/dt switching waveform; layout critical for EMI and efficiency.

Key Features

Feature	Design Value
Integrated N-Channel Buck Switch	460 mΩ R_DS(ON) enables high efficiency (>96%) and eliminates need for external MOSFET and driver IC.
Internal Soft-Start	300 µs controlled V_OUT ramp prevents inrush current and overshoot during power-up, simplifying system sequencing.
Stable with Ceramic Capacitors	No external compensation required - reduces BOM count and board area versus electrolytic-based solutions.
Peak Current Limit Protection	1.3 A typical current limit provides robust short-circuit and overload protection without external sensing components.
AEC-Q100 Qualified	Validated for automotive applications - meets stress testing requirements for temperature cycling, HTRB, and ESD (3 kV HBM).
Fixed-Frequency PWM Control	500 kHz operation allows predictable EMI filtering and consistent inductor sizing across designs.

Applications

PIC® Microcontroller Bias Supply	24V Industrial Input DC-DC Conversion
Use Scenario: Powering 3.3 V or 5 V core and I/O rails for PIC16F/PIC18F/PIC24F microcontrollers in battery-backed or mains-powered industrial controllers. IC Role / Device Role / Timing Role: Primary step-down regulator providing tightly regulated VDD with fast transient response to handle MCU sleep/wake cycles. Use Value: Delivers 600 mA at 3.3 V with <2% output error and 500 kHz switching, enabling compact 15 µH inductor and dual 10 µF ceramic output filter.	Use Scenario: Converting 24 V factory bus voltage to 5 V or 12 V for PLC I/O modules, sensor interfaces, and actuator drivers in harsh environments. IC Role / Device Role / Timing Role: High-input-voltage buck converter with UVLO and thermal protection for reliable operation across wide temperature and load ranges. Use Value: Operates from 4.0–30 V input with 600 mA output, AEC-Q100 qualification, and stable performance from –40°C to +125°C junction temperature.
Wall Cube Regulation	SLA Battery-Powered Devices
Use Scenario: Regulating unregulated 6–12 V outputs from AC-DC wall adapters into clean 3.3 V or 5 V for consumer electronics and IoT edge nodes. IC Role / Device Role / Timing Role: Efficient post-regulator replacing linear regulators to minimize heat and extend adapter lifetime. Use Value: Achieves up to 96% efficiency at full load, reducing thermal dissipation in enclosed plastic enclosures and supporting 100% duty cycle at light loads.	Use Scenario: Powering portable medical monitors, handheld test equipment, or security sensors powered by sealed lead-acid (SLA) batteries (12 V nominal, 10–14.4 V range). IC Role / Device Role / Timing Role: Wide-input buck converter maintaining stable 3.3 V output as battery discharges, with low quiescent current in standby. Use Value: Supports 4.0–30 V input range, draws only 7 µA in shutdown, and regulates down to 3.0 V input before UVLO shutdown.

PIC® Microcontroller Bias Supply

24V Industrial Input DC-DC Conversion

Use Scenario: Powering 3.3 V or 5 V core and I/O rails for PIC16F/PIC18F/PIC24F microcontrollers in battery-backed or mains-powered industrial controllers.

IC Role / Device Role / Timing Role: Primary step-down regulator providing tightly regulated VDD with fast transient response to handle MCU sleep/wake cycles.

Use Value: Delivers 600 mA at 3.3 V with <2% output error and 500 kHz switching, enabling compact 15 µH inductor and dual 10 µF ceramic output filter.

Use Scenario: Converting 24 V factory bus voltage to 5 V or 12 V for PLC I/O modules, sensor interfaces, and actuator drivers in harsh environments.

IC Role / Device Role / Timing Role: High-input-voltage buck converter with UVLO and thermal protection for reliable operation across wide temperature and load ranges.

Use Value: Operates from 4.0–30 V input with 600 mA output, AEC-Q100 qualification, and stable performance from –40°C to +125°C junction temperature.

Wall Cube Regulation

SLA Battery-Powered Devices

Use Scenario: Regulating unregulated 6–12 V outputs from AC-DC wall adapters into clean 3.3 V or 5 V for consumer electronics and IoT edge nodes.

IC Role / Device Role / Timing Role: Efficient post-regulator replacing linear regulators to minimize heat and extend adapter lifetime.

Use Value: Achieves up to 96% efficiency at full load, reducing thermal dissipation in enclosed plastic enclosures and supporting 100% duty cycle at light loads.

Use Scenario: Powering portable medical monitors, handheld test equipment, or security sensors powered by sealed lead-acid (SLA) batteries (12 V nominal, 10–14.4 V range).

IC Role / Device Role / Timing Role: Wide-input buck converter maintaining stable 3.3 V output as battery discharges, with low quiescent current in standby.

Use Value: Supports 4.0–30 V input range, draws only 7 µA in shutdown, and regulates down to 3.0 V input before UVLO shutdown.

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP2451DT-LF-Z	3.3–36 V input, 2 A output, 2 MHz switching, no integrated BOOT diode requirement; requires external compensation.	Higher current and frequency suit compact high-power designs but increase layout sensitivity and EMI filtering complexity.	Select MP2451DT-LF-Z when >600 mA output or faster transient response is needed; verify BOOT capacitor sizing and loop stability.
TPS54202DRCT	4.5–28 V input, 2 A output, 500 kHz, integrated high/low-side FETs, current-mode control, 15 µA shutdown IQ.	Sync-buck topology improves light-load efficiency; smaller solution size but higher cost and different pinout.	Choose TPS54202DRCT for battery-powered applications needing ultra-low shutdown current and higher efficiency below 100 mA load.

Compared with MP2451DT-LF-Z and TPS54202DRCT, the MCP16301T-450E/CHVAO offers optimal balance of cost, integration (no external compensation), AEC-Q100 qualification, and proven reliability in space-constrained industrial and automotive bias supplies - especially where 600 mA output and SOT-23-6 footprint are sufficient.

Availability

MCP16301T-450E/CHVAO is available at Aetrix Electronics and suitable for PIC® microcontroller bias supplies, 24V industrial DC-DC conversion, and SLA battery-powered devices requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for MCP16301T-450E/CHVAO 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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and software platforms.

The MCP16301/H product line delivers highly integrated, AEC-Q100 qualified buck regulators targeting cost-sensitive, space-constrained applications such as MCU bias supplies, industrial power rails, and automotive subsystems requiring high reliability and minimal external components.

FAQ

What is the maximum output current capability of the MCP16301T-450E/CHVAO under full load and elevated temperature?

The MCP16301T-450E/CHVAO delivers 600 mA continuous output current across the full input voltage range (4.0–30 V) and output voltage range (2.0–15.0 V) at +25°C ambient. At higher temperatures, derating applies: maximum output current decreases gradually above +85°C ambient due to thermal limits, with full shutdown occurring at +150°C junction temperature and automatic recovery at +120°C.

Does the MCP16301T-450E/CHVAO require external compensation components for stable operation?

No, the MCP16301T-450E/CHVAO includes fully integrated internal compensation - both error amplifier and slope compensation circuitry - eliminating the need for external RC networks. This allows stable operation with ceramic output capacitors and simplifies design across its entire operating range, as confirmed in the DS20005004E datasheet Section 4.1.2.

How is the output voltage set on the MCP16301T-450E/CHVAO, and what is the feedback reference voltage?

The MCP16301T-450E/CHVAO uses an external resistor divider connected to the VFB pin to set output voltage. Its internal reference is trimmed to 0.800 V ±2% over temperature, so V_OUT = 0.8 × (1 + R_TOP/R_BOT). A 10 kΩ bottom resistor is recommended; for 3.3 V output, R_TOP = 31.6 kΩ yields 3.328 V per DS20005004E Example 5-1.

Can the MCP16301T-450E/CHVAO operate with input voltages below 4.0 V?

No - the MCP16301T-450E/CHVAO has a guaranteed minimum input voltage of 4.0 V per its Absolute Maximum Ratings and Electrical Characteristics tables. Operation below this level risks failure to start or maintain regulation. Its undervoltage lockout stops switching at ~3.0 V (UVLOSTOP), and it will not resume until VIN rises above ~3.5 V (UVLOSTART).

What package type and pin configuration does the MCP16301T-450E/CHVAO use?

The MCP16301T-450E/CHVAO uses the SOT-23-6 surface-mount package with 1.3 mm × 2.9 mm body and 0.95 mm height. Pin 1 is BOOST, Pin 2 is GND, Pin 3 is VFB, Pin 4 is EN, Pin 5 is VIN, and Pin 6 is SW - matching the pinout defined in DS20005004E Table 3-1 and Figure 1-1.

MCP16301T-450E/CHVAO 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 ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-6

MCP16301T-450E/CHVAO FAQ

1.How can I place an order for MCP16301T-450E/CHVAO through Aetrix?

Please submit a Request for Quotation (RFQ) for MCP16301T-450E/CHVAO 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-450E/CHVAO reliable?

The price and inventory of MCP16301T-450E/CHVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16301T-450E/CHVAO is usually 5 days.

3.What payment methods are accepted for MCP16301T-450E/CHVAO?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16301T-450E/CHVAO transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MCP16301T-450E/CHVAO?

MCP16301T-450E/CHVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCP16301T-450E/CHVAO 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-450E/CHVAO?

For technical support, including MCP16301T-450E/CHVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16301T-450E/CHVAO requirements.

6.How does Aetrix verify that MCP16301T-450E/CHVAO is sourced from the original manufacturer or authorized distributors?

All MCP16301T-450E/CHVAO 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-450E/CHVAO meets industry standards.

7.What is the process for return or replacement of MCP16301T-450E/CHVAO?

All MCP16301T-450E/CHVAO units undergo pre-shipment inspection (PSI). If there is an issue with MCP16301T-450E/CHVAO, 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-450E/CHVAO part is unused and in its original packaging.

Return procedure for MCP16301T-450E/CHVAO:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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