MCP14628 Data Sheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gif2A Synchronous Buck Power MOSFET DriverThe MCP14628 is a synchronous MOSFET driver used for driving MOSFETs in a rectified bridge arrangement. This type of arrangement is typical of synchronous buck converter topologies.There are two separate drivers contained in the MCP14628. the low-side driver output drives a non-floating or ground reference N-Channel MOSFET. The high-side driver is designed to drive a floating N-Channel MOSFET. since the N-Channel is floating, this output needs to be able to handle the high voltages required to fully turn on the high-side MOSFET. An external bootstrap capacitor is used to provide the additional voltage. The MCP14628 is available in a surface mount 8 Lead SOIC package with a body width of 150 mils and the 8 Lead 3mmX3mm DFN package.
Parameter NameValue
PowerSingle
Peak Output Current (mA)2000
Output Resistance (RH/RL)(Max. @ 25°C)2.5/2.5
Max. Supply Voltage (V)5
Input/Output Delay (td1, td2)1 (ns)25/25
ConfigurationNon-Inverting
DescriptionHigh-Side/Low-Side MOSFET Drivers
Operating Temp. Range (°C)-40 to 85
Features
- Adaptive Cross conduction protection
- High capacitive load drive Capability:
3000 pF in 8.0 ns (typ)
- Low Supply Current: 80 uA (typ)
- High Peak Output Current:
Source 2.0A (UGATE & LGATE)
Sink 2.0A (UGATE) & 4A (LGATE)
- Internal Bootstrap Blocking Device
- Enhanced Light Load Efficiency Mode
- Supports Floating High-Side Drive
- Packaging:
8 Lead surface mount SOIC, 150 mil body
8 Lead 3mmX3mm DFN
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