The LM27222 is a dual N-channel MOSFET driver designed to drive MOSFETs in push-pull configurations as typically used in synchronous buck regulators. The LM27222 takes the PWM output from a controller and provides the proper timing and drive levels to the power stage MOSFETs. Adaptive shoot-through protection prevents damaging and efficiency reducing shoot-through currents, thus ensuring a robust design capable of being used with nearly any MOSFET. The adaptive shoot-through protection circuitry also reduces the dead time down to as low as 10ns, ensuring the highest operating efficiency. The peak sourcing and sinking current for each driver of the LM27222 is about 3A and 4.5Amps respectively with a Vgs of 5V. System performance is also enhanced by keeping propagation delays down to 8ns. Efficiency is once again improved at all load currents by supporting synchronous, non-synchronous, and diode emulation modes through the LEN pin. The minimum output pulse width realized at the output of the MOSFETs is as low as 30ns. This enables high operating frequencies at very high conversion ratios in buck regulator designs. To support low power states in notebook systems, the LM27222 draws only 5µA from the 5V rail when the IN and LEN inputs are low or floating.

• Adaptive Shoot-through Protection
• 10ns Dead Time
• 8ns Propagation Delay
• 30ns Minimum On-time
• 0.4? Pull-down and 0.9? Pull-up Drivers
• 4.5A Peak Driving Current
• MOSFET Tolerant Design
• 5μA Quiescent Current
• 30V Maximum Input Voltage in Buck Configuration
• 4V to 6.85V Operating Voltage
• SOIC-8 and WSON Packages

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• Bus voltage (Max) (V)
• 30
• Power switch
• MOSFET
• Input VCC (Min) (V)
• 4
• Input VCC (Max) (V)
• 6.85
• Peak output current (A)
• 4.5
• Rise time (ns)
• 17
• Operating temperature range (C)
• -40 to 125
• Rating
• Catalog
• Number of channels (#)
• 2
• Fall time (ns)
• 14
• Prop delay (ns)
• 8
• Iq (uA)
• 540
• Input threshold
• CMOS
• Channel input logic
• CMOS
• Negative voltage handling at HS pin (V)
• -0.3
• Features
• —
• Driver configuration
• Single

LM27222的完整型号有：LM27222M/NOPB、LM27222MX/NOPB、LM27222SD/NOPB、LM27222M，以下是这些产品的关键参数及官网采购报价：

LM27222M/NOPB，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM27222M/NOPB的批量USD价格：1.214（1000+）

LM27222MX/NOPB，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM27222MX/NOPB的批量USD价格：1.012（1000+）

LM27222SD/NOPB，工作温度：-40 to 125，封装：WSON (NGT)-8，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM27222SD/NOPB的批量USD价格：1.012（1000+）

LM27222M，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-235C-UNLIM，引脚镀层/焊球材料：SNPB，TI官网LM27222M的批量USD价格：1.569（1000+）

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