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MP2451DT
The MP2451DT is a synchronous step-down converter IC used for regulating voltage in electronic devicesMP2451DT
The MP2451DT is a synchronous step-down converter IC used for regulating voltage in electronic devices
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MP2451DT DataSheet
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Details
The MP2451DT is a synchronous, rectified, step-down converter with built-in internal power MOSFETs. It operates from a 4.5V to 18V input voltage range and provides up to 3A of continuous output current with excellent load and line regulation. Its integrated low resistance, high-side and low-side power MOSFETs deliver high efficiency performance.This device utilizes constant-on-time (COT) control architecture, providing fast transient response and simplifying loop compensation design. It also features cycle-by-cycle current limiting and thermal shutdown protection to ensure safe operation under fault conditions.With a wide input voltage range and high output current capability, the MP2451DT is suitable for various applications, including industrial, automotive, and consumer electronics. It comes in a compact, thermally enhanced 10-pin MSOP package, offering a small footprint solution for space-constrained designs.
Key Features
- Integrated 4A, 500kHz/1MHz synchronous step-down regulator
- Programmable output voltage from 0.6V to VDD
- PowerGood output indicator
- Soft start and external synchronization
- Over-temperature, over-current, and short-circuit protection
- Thermal shutdown and under-voltage lockout
Application
- Portable electronic devices
- Mobile phones
- Tablets
- Laptops
- Bluetooth speakers
- GPS devices
- USB Type-C power delivery applications
- Battery pack chargers
- Industrial equipment
- Automotive applications
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Pbfree Code | No | Rohs Code | No |
| Part Life Cycle Code | Active | Part Package Code | TSSOP |
| Pin Count ! | 6 | Reach Compliance Code | compliant |
| ECCN Code | EAR99 | HTS Code ! | 8542.39.00.01 |
| Additional Feature ! | OUTPUT VOLTAGE IS ADJUSTABLE FROM 0.8 TO 28.8V | Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE | Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 36 V | Input Voltage-Min | 3.3 V |
| Input Voltage-Nom | 12 V | JESD-30 Code | R-PDSO-G6 |
| Length | 2.9 mm | Number of Functions | 1 |
| Number of Terminals | 6 | Operating Temperature-Max | 85 °C |
| Operating Temperature-Min | -40 °C | Output Current-Max | 0.85 A |
| Package Body Material | PLASTIC/EPOXY | Package Code | VSSOP |
| Package Equivalence Code | TSOP6,.11,37 | Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH | Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status ! | Not Qualified | Seated Height-Max | 1 mm |
| Surface Mount ! | YES | Switcher Configuration | BUCK |
| Switching Frequency-Max | 2400 kHz | Temperature Grade ! | INDUSTRIAL |
| Terminal Form ! | GULL WING | Terminal Pitch ! | 0.95 mm |
| Terminal Position | DUAL | Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Width | 1.6 mm |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is MP2451DT?
The MP2451DT is a high-frequency, synchronous, rectified, step-down switch mode converter designed by Monolithic Power Systems. It is suitable for applications requiring efficient power conversion with high switching frequencies, such as portable devices, LED lighting, and battery-powered systems.
How Does MP2451DT Work?
The MP2451DT operates as a step-down converter, converting a higher input voltage to a lower output voltage with high efficiency. It utilizes synchronous rectification to minimize switching losses and improve overall efficiency. The converter features a pulse-width modulation (PWM) control scheme for regulating the output voltage.
How Many Pins does MP2451DT have and What are the Functions of the Pinout Configuration?
The MP2451DT is housed in a 10-pin DFN (Dual Flat No-leads) package. The pinout configuration includes:
- VIN: Input voltage pin.
- SW: Switching node pin.
- EN: Enable pin for turning the converter on/off.
- PGND: Power ground pin.
- AGND: Analog ground pin.
- FB: Feedback pin for voltage regulation.
- COMP: Compensation pin for stability control.
- SS/TR: Soft-start/tracking pin for startup control.
- ILIM: Current limit setting pin.
- VOUT: Output voltage pin.
What are the Pros and Cons of MP2451DT?
Pros:
- High Efficiency: Achieves high efficiency through synchronous rectification.
- Compact Design: Small DFN package for space-constrained applications.
- High Switching Frequency: Offers high switching frequencies for reduced component size.
- Wide Input Voltage Range: Supports a wide input voltage range for versatile applications.
- Short-Circuit Protection: Includes built-in protection features for enhanced reliability.
Cons:
- Heat Dissipation: May require a heat sink for thermal management at high loads.
- External Components: Additional external components may be needed for specific applications or features.
Are There Any Equivalents/Alternatives to MP2451DT for Recommendation?
- The LM2675 from Texas Instruments is a comparable synchronous step-down converter.
- Alternatives to the MP2451DT include the LT8610 from Analog Devices and the ADP2303 from Analog Devices.
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