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HomeProductsIntegrated Circuits (ICs)Specialized ICsMCP1630E/MS
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MCP1630E/MS - Micrel / Microchip Technology

Manufacturer Part Number
MCP1630E/MS
Manufacturer
Microchip Technology
Allelco Part Number
32D-MCP1630E/MS
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,610 pcs available, New & Original
Parts Description
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Data sheet
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Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 16610

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Specifications

MCP1630E/MS Tech Specifications
Micrel / Microchip Technology - MCP1630E/MS technical specifications, attributes, parameters and parts with similar specifications to Micrel / Microchip Technology - MCP1630E/MS

Product Attribute Attribute Value
Part Number MCP1630E/MS
Package -
Description -
Stock Condition Get 16610 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Microchip Technology
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the MCP1630E/MS switching frequency compare to similar synchronous buck controllers, and what are the implications for inductor selection in a 5V output design?
The MCP1630E/MS operates at a fixed switching frequency that allows predictable timing in PWM control loops, which is advantageous for designing stable voltage regulation systems. When targeting a 5V output, this fixed-frequency operation enables the use of smaller inductors compared to variable-frequency topologies, as the duty cycle remains within a narrower range. However, higher frequencies increase switching losses, potentially reducing overall efficiency. In practical designs, engineers often select inductors with saturation currents above peak load requirements while ensuring the core material supports the operating frequency without excessive core loss.
What input voltage conditions can the MCP1630E/MS reliably regulate, and how does dropout voltage affect system performance in battery-powered applications?
The MCP1630E/MS is designed to maintain regulation across a wide input range, typically starting from just above the output voltage level. In battery-powered systems—such as those using Li-ion cells—the dropout voltage becomes critical during discharge cycles. As the battery voltage drops toward the regulated output (e.g., 3.3V or 5V), the controller must operate closer to its minimum input threshold. If the input falls below this threshold, the output voltage will begin to sag, leading to potential instability or failure to deliver full rail voltage. This behavior directly impacts runtime and reliability in portable electronics.
How does thermal performance of the MCP1630E/MS influence PCB layout decisions, especially in compact form factors?
The MCP1630E/MS generates heat primarily through conduction via its power pins and exposed pad, particularly under high duty cycle or high current conditions. Efficient thermal management requires placing the IC near thermal vias connected to an internal ground plane or dedicated copper pour. In space-constrained designs, such as handheld devices, inadequate thermal relief can lead to localized heating, increasing junction temperature and potentially triggering thermal shutdown. Engineers should evaluate steady-state power dissipation (P_D = I_OUT × V_DROP) and ensure sufficient copper area to keep T_J below maximum ratings, typically below 150°C.
What external components are required to configure the MCP1630E/MS for overcurrent protection, and how do sense resistor values impact fault detection accuracy?
Overcurrent protection in the MCP1630E/MS is implemented using a current sense resistor placed between the source pin of the internal switch and ground. The controller monitors the voltage drop across this resistor; when it exceeds a threshold (typically around 100 mV), the device reduces duty cycle or disables switching to limit current flow. Selecting the correct sense resistor value involves balancing sensitivity against power loss. For example, a 0.1Ω resistor may be appropriate for 1A loads (dropping 100 mV at overload), but this adds 0.1W of continuous dissipation. Oversizing increases detection delay, while undersizing reduces protection margin.
Can the MCP1630E/MS support discontinuous conduction mode (DCM) operation, and what design considerations arise when transitioning between CCM and DCM?
Yes, the MCP1630E/MS inherently supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), depending on load current and inductance value. At light loads, the inductor current ramps down to zero before the next switching cycle begins—characteristic of DCM. This simplifies compensation but introduces non-ideal behaviors like increased ripple and reduced efficiency. Designers must account for this transition when selecting feedback loop compensation networks, as the control-to-output transfer function differs significantly between CCM and DCM. Failure to properly model this can result in poor transient response or instability at light loads.
How does the soft-start functionality of the MCP1630E/MS prevent inrush current during power-up, and what capacitor value is typically recommended?
The MCP1630E/MS includes an internal soft-start mechanism that gradually ramps up the reference voltage from zero to full scale over a controlled time period, limiting the initial charging current into the output capacitor. This prevents sudden voltage surges that could stress downstream components or cause input voltage droop. The soft-start duration is set by an external capacitor connected to the SS pin. A typical value might be 0.1 µF to 1 µF, corresponding to startup times of 1 ms to 10 ms. Choosing too large a capacitor prolongs startup unnecessarily; too small risks violating minimum ramp requirements for proper sequencing.
What are the key differences between the MCP1630E/MS and a comparable non-synchronous buck regulator like the LM2596, particularly regarding efficiency at partial loads?
Unlike non-synchronous regulators that rely on body diode conduction for freewheeling during the off-time, the MCP1630E/MS uses a dedicated synchronous MOSFET, eliminating diode forward voltage drop. This results in higher efficiency, especially at moderate to heavy loads where conduction losses dominate. At partial loads (e.g., 25% of rated output current), the synchronous rectification advantage diminishes slightly due to gate drive overhead and quiescent current, but still outperforms diode-based solutions. Additionally, the MCP1630E/MS offers better thermal performance and more precise current limiting, making it preferable for applications demanding consistent efficiency across load ranges.
How does the MCP1630E/MS handle reverse current flow, and what precautions are needed if the output might back-feed into another subsystem?
The MCP1630E/MS does not actively block reverse current; if the output voltage exceeds the input due to external forces (e.g., another powered rail), current may flow backward through the internal parasitic diodes. This can compromise system safety and violate component ratings. To prevent unintended reverse current, designers often add a Schottky diode between output and input, or use a load switch with active control. Alternatively, some implementations use a P-channel MOSFET as a high-side pass element to isolate the output completely when not needed.
What is the significance of the enable (EN) pin threshold voltage, and how should it be driven in microcontroller-based systems?
The EN pin on the MCP1630E/MS has defined logic-level thresholds: typically 1.2V for activation and 0.4V for deactivation. These levels allow direct interface with standard microcontrollers without level shifting. When driving from a digital GPIO, ensure the pull-up or pull-down resistor value keeps leakage current low enough to avoid false triggering—values between 10kΩ and 100kΩ are common. Also, consider adding a small RC filter on the EN line to suppress noise-induced glitches that could cause erratic start/stop behavior during transient events.
How does electromagnetic interference (EMI) performance vary with PCB layout, and what layout practices minimize conducted emissions from the MCP1630E/MS circuit?
The MCP1630E/MS generates high di/dt and dv/dt transients during switching, which radiate and conduct EMI. Critical layout practices include minimizing loop areas formed by input capacitors, power switches, and the IC itself; placing input and output bypass capacitors as close as possible to their respective pads; and using star grounding to avoid ground bounce. Routing high-current paths with wide traces reduces impedance and associated noise. Ferrite beads may be added selectively to suppress high-frequency harmonics, though they must not interfere with soft-start or current-limit response.
What environmental and reliability factors should be considered when deploying the MCP1630E/MS in automotive or industrial environments?
The MCP1630E/MS is not inherently qualified to automotive standards (e.g., AEC-Q100), so extra care is needed in harsh environments. Operating temperature range extends beyond commercial grades, but long-term exposure to elevated temperatures accelerates degradation of bond wires and die attach. Thermal cycling stresses solder joints and packaging. In industrial settings, electrostatic discharge (ESD) protection should be reinforced with TVS diodes near input connectors. Additionally, input voltage transients common in automotive systems require robust filtering and clamping circuits to protect the controller from voltage spikes exceeding absolute maximum ratings.

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
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New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Micrel / Microchip Technology

MCP1630E/MS

Micrel / Microchip Technology
32D-MCP1630E/MS

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