LM27342SDX

• Space-saving 3 x 3 mm LLP-10 & eMSOP-10 packages
• Wide input voltage range of 3V to 20V
• Wide output voltage range of 1V to 18V
• LM27341 provides a maximum output current of 1.5A
• LM27342 provides a maximum output current of 2A
• High switching frequency of 2 MHz
• 频率同步1.00兆赫SW 2.35 MHz
• 150mΩ internal bootstrap power NMOS switch
• 70 nA shut-off current
• Internal voltage reference accuracy of 1%
• Peak current mode, PWM operation
• Thermal shutdown
• LM27341Q and LM27342Q AEC-Q100 Class 1 qualified and are produced in an automotive-grade flow range

illustrate

The LM27341 and LM27342 regulators are monolithic, high-frequency, PWM step-down DC-DC converters in 10-pin LLP and 10-pin eMSOP packages. They include all the active functions, provide fast transient response and precisely regulate local DC-to-DC conversion with the smallest possible PCB area.

Minimal external components LM27341 and LM27342 easy to use. Capable of driving a 1.5A or 2A load with an internal 150mΩ NMOS tube respectively results in optimal power density switching. The world-class control circuitry allows for times as low as 65 ns, thus supporting very high frequency conversions. The switching frequency is internally set to 2 MHz synchronization from 1 to 2.35 MHz, which allows the use of very small surface mount inductors and capacitors. Even at very high operating frequencies, efficiencies of up to 90% are easy to achieve. Includes an external shutdown with an ultra-low shutdown current of 70 nA. The LM27341and LM27342 uses peak current mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Other features include an internal soft-start circuit to reduce inrush current, pulse through pulse current limiting, thermal shutdown, and output overvoltage protection.

apply

• Local 12V Vcore step-down converter
• Wireless power
• At the heart of the hard drive
• Stb
• Car
• USB-powered devices
• DSL modem