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Overview
| Topology | Buck Converter |
| Input voltage | 2.5-6 V |
| Output 1 | 1.5 V |
| Output 2 | 6 V / 3 A |
| Output 3 | 3.3 V |
| Output 4 | 2.5 V |
| Output 5 | 1.8 V |
| Output 6 | 1.2 V |
| IC revision | 1.0 |
Description
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 Lithium- Ion (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.
Features
- High Efficiency: Up to 90%
- 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% 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
Typical applications
- Portable Instruments
- MP3 Players
- Microprocessors and DSP Core Supplies
- Cellular Phones
- PDAs
- Smart Phones
- Digital Still and Video Cameras
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744310200 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCI SMT Flat Wire High Current Inductor | 2 | 8.7 | – | 15.62 | 58 | 7030 | SMT | 3 | 9 | 14.2 | Superflux | ||
 | 744777002 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | 2.2 | 6.9 | 6.5 | 20 | 60 | 7345 | Standard | 6.5 | 8 | – | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | Material | Samples |
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