MIC2151
The MIC2150/1 are simple 2-phase dual-output synchronous buck control ICs featuring small size and high efficiency. The ICs implement PWM control at 500kHz (MIC2150) or 300kHz (MIC2151), with the outputs switching 180° out of phase. The result of the out-of-phase operation is 1MHz input ripple frequency with ripple current cancellation, minimizing the required input filter capacitance. A 1% output voltage tolerance allows the maximum level of system performance. Internal drivers with adaptive gate drive allow the highest efficiency with the minimum external components.
A dual threshold enable pin, matched soft-start pins, and a power good output are provided, allowing a high level of control.
The MIC2150/1 are available in the small size 4mm x 4mm 24-pin MLF® package. The MIC2150/1 has a junction operating range from –40°C to +125°C.
产品特性- Dual Synchronous Buck Control IC with outputs switching 180° out-of-phase
- 4.5V to 14.5V input voltage range
- Adjustable output voltages down to 0.7V
- 1% output voltage accuracy
- MIC2150: 500kHz PWM operation
- MIC2151: 300kHz PWM operation
- Adaptive gate drive allows efficiencies over 95%
- Adjustable current limit with no sense resistor
 Senses low-side MOSFET current
- Internal drivers allow 20A per phase
| 技术参数|
Parameter Name
Value
| Value | |
Supported Topologies
Sync. Buck
|
Sync. Buck
| |
Supported Outputs
2
|
2
| |
Minimum Input Voltage (V)
4.5
|
4.5
| |
Maximum Input Voltage (V)
14.5
|
14.5
| |
Minimum Output Voltage (V)
0.7
|
0.7
| |
Typical Tolerance (%)
±1
|
±1
| |
Duty Cycle Max (%)
0.83
|
0.83
| |
Operating Frequency (Hz)
300K
|
300K
| |
Power Good Signal
True
|
True
| |
Soft Start
True
|
True
| |
Internal Voltage Bias
True
|
True
| |
Enable Pin
True
|
True
| |
Current Limit / Short Circuit Protection
True
|
True
| |
Input UVLO Typ (V)
2.03
|
2.03
| |
Operating Supply Current (mA)
4.2
|
4.2
| |
Iq Off (µA)
50
|
50
| |
Package
24/4x4 MLF
|
24/4x4 MLF
|
|
文档资料
器件无铅环保信息
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC2151YML-TR | 0.042200 | 0.204000 | 24 | VQFN | 4x4x0.9mm | NiPdAu | e4 |  |  |
