MIC23450
The MIC23450 is a high-efficiency, 3MHz, triple 2A, synchronous buck regulator with HyperLight Load® mode. HyperLight Load® provides very-high efficiency at light loads and ultra-fast transient response which is perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors. The 5mm x 5mm QFN package saves board space and requires only five external components for each channel.
The MIC23450 is designed for use with a very small inductor, down to 0.47µH, and an output capacitor as small as 2.2µF that enables a total solution size, less than 1mm height.
The MIC23450 has a very-low quiescent current of 23µA each channel and achieves as high as 81% efficiency at 1mA. At higher loads, the MIC23450 provides a constant switching frequency around 3MHz while achieving peak efficiencies up to 93%.
The MIC23450 is available in 32-pin 5mm x 5mm MLF® package with an operating junction temperature range from -40°C to +125°C.
Features- Input voltage: 2.7V to 5.5V
- Three independent 2A outputs
- Up to 93% peak efficiency
- 81% typical efficiency at 1mA
- Three independent Power Good Indicators
- 23µA typical quiescent current (per channel)
- 3MHz PWM operation in continuous mode
- Ultra-fast transient response
- Low voltage output ripple
30mVpp ripple in HyperLight Load® mode
5mV output voltage ripple in full PWM mode
- 30mVpp ripple in HyperLight Load® mode
- 5mV output voltage ripple in full PWM mode
- Fully integrated MOSFET switches
- 0.01µA shutdown current (per channel)
- Thermal-shutdown and current-limit protection
- Output voltage as low as 1V
- 32-pin 5mm x 5mm QFN
- -40°C to +125°C junction temperature range
| Parameter|
Parameter Name
Value
| Value | |
Regulator Type
Step Down (Buck)
|
Step Down (Buck)
| |
# of Outputs
3
|
3
| |
Input Voltage Range Min (V)
2.7
|
2.7
| |
Input Voltage Range Max (V)
5.5
|
5.5
| |
Output Voltage Range Min (V)
0.62
|
0.62
| |
Output Voltage Range Max (V)
3.3
|
3.3
| |
Quiescent Current (mA) typ
69
|
69
| |
Switching Frequency (kHz)
3000
|
3000
| |
Synchronous Rectifier
Yes
|
Yes
| |
Operating Temp Range
-40 to 125
|
-40 to 125
| |
Vfb (V)
0.62
|
0.62
| |
Duty Cycle Max (%)
0.9
|
0.9
| |
SHUTDOWN Current (µA) (Typ)
0.01
|
0.01
| |
Light Load Efficiency Mode
Yes
|
Yes
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC23450-AAAYML-TR | 32 | VQFN | -40C to +125C | T/R | 1.82 | 1.51 | 1.38 | 1.33 | 1.31 |
相关开发工具
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC23450-AAAYML-TR | 0.064100 | 0.214000 | 32 | VQFN | 5x5x0.9mm | NiPdAu | e4 |  |  |
| MIC23450-AAAYML-T5 | 0.064100 | 0.214000 | 32 | VQFN | 5x5x0.9mm | NiPdAu | e4 | | |
