The LM2742 is a high-speed, synchronous, switching regulator controller. It is intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2742 operates from a low-current 5V bias and can convert from a 1V to 16V power rail. The part utilizes a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by setting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enables on-times on the order of 40ns, one of the best in the industry. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 1V to 16V and the output voltage is adjustable down to 0.6V.

• Input Power from 1V to 16V
• Output Voltage Adjustable down to 0.6V
• Power Good Flag, Adjustable Soft-start and Output Enable for Easy Power Sequencing
• Reference Accuracy: 1.5% (0°C–125°C)
• Current Limit Without Sense Resistor
• Soft Start
• Switching Frequency from 50 kHz to 2 MHz
• 40ns Typical Minimum On-time
• TSSOP-14 Package

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• Vin (Min) (V)
• 2.2
• Vin (Max) (V)
• 16
• Vout (Min) (V)
• 0.6
• Vout (Max) (V)
• 13.5
• Iout (Max) (A)
• 20
• Iq (Typ) (uA)
• 1500
• Switching frequency (Min) (kHz)
• 50
• Switching frequency (Max) (kHz)
• 2000
• Features
• Enable, Power Good, Synchronous Rectification
• Regulated outputs (#)
• 1
• Number of phases
• 1
• Rating
• Catalog

LM2742的完整型号有：LM2742MTC/NOPB、LM2742MTCX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM2742MTC/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-14，包装数量MPQ：94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LM2742MTC/NOPB的批量USD价格：.929（1000+）

LM2742MTCX/NOPB，工作温度：-40 to 125，封装：TSSOP (PW)-14，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LM2742MTCX/NOPB的批量USD价格：.774（1000+）

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