Product Descriptions
The MP2249 is a 1MHz constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency and eliminates the need for an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell LithiumIon (Li+) battery.
The MP2249 can supply 3A of load current from a 2.5V to 6V input voltage. It can run at 100% duty cycle for low dropout applications. The MP2249 provides internal soft-start control to reduce rush current and output discharge function to control discharging of the output capacitor.
The MP2249 is available in small 3mmx3mm TQFN10 or SOIC8E package.
Product Features
• High Efficiency: Up to 90 PERCENT
• Power Save Mode at Light Load
• 1MHz Constant Switching Frequency
• Up to 4.5A Peak Current
• 2.5V to 6V Input Voltage Range
• Output Adjustable from 0.6V to VIN
• 100 PERCENT Duty Cycle in Dropout
• Output Discharge Function
• Internal Soft-Start Control
• Power Good Indicator
• Short Circuit Protection
• Thermal Fault Protection
• Available in 3mmx3mm TQFN10 or SOIC8E Package
Product Applications
• Cellular and Smart Phones
• Microprocessors and DSP Core Supplies
• PDAs
• MP3 Players
• Digital Still and Video Cameras
• Portable Instruments
Product Specification
| Attribute | Attribute value |
| ANSM-Part# | ANSM-MP2249DN-LF-Z |
| Category | Integrated Circuits (ICs) |
| Power Management (PMIC) | |
| Voltage Regulators - DC DC Switching Regulators | |
| Mfr | - |
| Series | - |
| Packaging | Tape & Reel (TR) |
| Part Status | Not For New Designs |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.5V |
| Voltage - Input (Max) | 6V |
| Voltage - Output (Min/Fixed) | 0.6V |
| Voltage - Output (Max) | 6V |
| Current - Output | 3A |
| Frequency - Switching | 1MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Supplier Device Package | 8-SOICE |
| Base Product Number | MP2249 |
Product Photos
For more product information, please download the PDF
