MIC28513-2YFL Microchip Integrated Circuit (Other) In Stock
The MIC28513-2YFL is a 4 A synchronous buck regulator with HyperSpeed control supporting a 4.6 V to 45 V input range and adjustable output down to 0.8 V, delivering high-efficiency DC/DC conversion in a 24-lead LCC package for industrial, telecom, and automotive power designs.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 27
- Lifecycle
- ACTIVE
- Datasheet
- MIC28513-2YFL Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4 A continuous output current from a wide 4.6 V to 45 V input range suits diverse power rails
- HyperSpeed control architecture achieves fast transient response with minimal output capacitance
- Adjustable output voltage down to 0.8 V covers point-of-load regulation for FPGAs and DSPs
- Synchronous rectification maximizes efficiency by eliminating external Schottky diode losses
- 24-lead LCC package with exposed thermal pad enables high power density and good heat dissipation
Applications
The MIC28513-2YFL is designed for point-of-load DC/DC conversion in industrial controllers, telecom line cards, and motor-drive gate-driver supplies where a high input bus voltage must be stepped down efficiently to sub-1 V FPGA core rails or 3.3 V logic supplies. Its wide 4.6 V to 45 V input accommodates 12 V, 24 V, and 36 V industrial distribution buses as well as 48 V telecom rails in a single design. The HyperSpeed control loop also supports low-duty-cycle applications in automotive body electronics and battery-management systems powered from 12 V or 24 V vehicle batteries.
Specifications
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE DOWN TO 0.8V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Input Voltage-Max | 45V |
| Input Voltage-Min | 4.6V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-XQCC-N24 |
| Number of Functions | 1 |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC24,.12X16,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 800kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output current capability of the MIC28513-2YFL, and down to what output voltage can it regulate?
The MIC28513-2YFL delivers up to 4 A of continuous output current and can regulate the output voltage down to 0.8 V using an external resistor divider. This combination makes it suitable for powering FPGA core rails at 0.9 V to 1.0 V, processor I/O rails at 1.8 V, and DDR memory supplies at 1.2 V directly from a 12 V or higher input bus.
How wide is the MIC28513-2YFL input voltage range, and which industrial bus voltages does it support without additional pre-regulation?
With an input range from 4.6 V to 45 V, the MIC28513-2YFL directly supports 5 V USB, 12 V desktop, 24 V industrial, and 36 V to 48 V telecom distribution buses in a single design. Designers can use one bill of materials across multiple product variants that differ only in the external bus voltage, reducing procurement complexity and qualification effort.
What advantage does HyperSpeed control offer over conventional voltage-mode PWM in a fast-transient load application?
HyperSpeed control in the MIC28513-2YFL uses a proprietary constant-on-time architecture that responds to a load step within a single switching cycle, compared to 2 to 5 cycles for conventional voltage-mode PWM with a type-III compensator. In FPGA power rails where core current can step by 2 A to 3 A in under 1 µs, this faster response limits output voltage deviation to less than 50 mV, allowing designers to use fewer or smaller output capacitors.
What thermal performance does the 24-lead LCC package provide for the MIC28513-2YFL at 4 A full load?
The 24-lead LCC (exposed-pad QFN-style) package has a junction-to-board thermal resistance of approximately 20 °C/W to 30 °C/W when the exposed pad is soldered to a multi-layer PCB with thermal vias. At 4 A output and a 90% efficiency scenario, the roughly 500 mW to 1 W internal dissipation produces a junction temperature rise of 15 °C to 30 °C above the board temperature, keeping the die well within the 125 °C maximum over a standard industrial -40 °C to +85 °C ambient range.
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