MIC2245YML-TR More Semiconductors - ICs by Microchip Technology
4MHz 500mA Synchronous Buck Regulator w/LowQ® Mode
| Status: | Active |
|---|---|
| Series: | MIC2245 |
| RoHS: | Compliant |
The MIC2245 is a high efficiency 4MHz pulse width modulated (PWM) synchronous buck (stepdown) regulator that features a LowQ® LDO standby mode that draws only 18µA of quiescent current. The MIC2245 allows an ultra-low noise, small size, and high efficiency solution for portable power applications.
In PWM mode, the MIC2245 operates with a constant frequency 4MHz PWM control. Under light load conditions, such as in system sleep or standby modes, the PWM switching operation can be disabled to reduce switching losses. In this light load LowQ® mode, the LDO maintains the output voltage and draws only 18µA of quiescent current. The LDO mode of operation saves battery life while not introducing spurious noise and high ripple as experienced with pulse skipping or bursting mode regulators.
The MIC2245 operates from a 2.7V to 5.5V input voltage and features internal power MOSFETs that can supply up to 500mA output current in PWM mode. It can operate with a maximum duty cycle of 100% for use in low-dropout conditions.
Features
| 2.7V to 5.5V supply/input voltage |
| Light load LowQ® LDO mode |
| 4MHz PWM mode |
| Adjustable output voltage option down to 1V |
| Ultra-fast transient response |
| Uses a tiny 1µH inductor |
| Fully integrated MOSFET switches |
| Micropower shutdown operation |
| Thermal shutdown and current limit protection |
| -40°C to +125°C junction temperature range |
Specifications
| Regulator Type | Step Down (Buck) |
|---|---|
| Switching Frequency (kHz) | 4000 |
| Input Voltage Range Min | 2.7 |
| Input Voltage Range Max | 5.5 |
| Output Current | 500 |
| Temp Range Min | -40 |
| Temp Range Max | 125 |
| Vout Min (V) | 1 |
| Vout Max (V) | 5.5 |
| Quiescent Current (mA) typ | 0.71 |
| Light Load Efficiency Mode | No |
| Automotive Rated | No |
| SHUTDOWN Current (µA) (Typ) | 0.01 |
| # of Outputs | 1 |
| Vfb (V) | 1 |
| Synchronous Rectifier | Yes |
| Duty Cycle Max (%) | 1 |
| Pins | Packaging | 10 | VDFN |
| Temp Range | -40C to +125C |
| Packing Media | Tape and reel (5000) |
Environmental Information
| JEDEC Indicator | e4 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.0227 |
| Shipping Weight (kg) | 0.643702 |
| Lead Count | 10 |
| Package Type | VDFN |
| Package Width or Size | 3x3x0.9mm |
| Soldering Composition | NiPdAu |
Alternative Descriptions
| 4Mhz Synchronous Buck Regulator - Low Q Mode 10 Vdfn 3X3X0.9Mm T/R Rohs Compliant: Yes |Microchip MIC2245YML-TR | Newark Electronics |
| Conv DC-DC Single Step Down 2.7V 5.5V 10-Pin VDFN T/R | Avnet America |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a MIC2245YML-TR?
Additional datasheets, footprints and schematics for MIC2245YML-TR are listed on our Part Details page. You can also find images and similar parts to MIC2245YML-TR on this page.
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What category does MIC2245YML-TR fall under?
The MIC2245YML-TR is listed under Semiconductors - ICs > More Semiconductors - ICs.
Can I view similar or alternative parts?
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Is the MIC2245YML-TR RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for MIC2245YML-TR have stock available?
Authorised distributors including Newark Electronics and Avnet America have stock available or on a lead time for MIC2245YML-TR.
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