A7406B中文資料創(chuàng)瑞科技數(shù)據(jù)手冊PDF規(guī)格書

DESCRIPTION

The A7406B is a wide input range, high-efficiency, and high frequency DC-to-DC step-down switching regulator, capable of delivering up to 0.6A of output current.

With a fixed switching frequency of 1.6MHz, this current mode PWM controlled converter allows the use of small external components, such as ceramic input and output caps, as well as small inductors.

Including cold crank and double battery jump-starts, the minimum input voltage may be as low as 4.5V and the maximum up to 45V, with even higher transient voltages. With these high input voltages, linear regulators cannot be used for high supply currents without overheating the regulator. Instead, high efficiency switching regulators such as A7406B must be used to minimize thermal dissipation.

The A7406B is available in SOT-26 package.

FEATURES

? Wide Input Operatin g Range from 4.5V to 45V

? 420mΩ internal NMOS

? Up to 95 Efficiency at 16V in 12V out L=47uH

with 300mA loading

? Internal compensation

? Capable of Delivering 600mA continuous output

current

? Fixed 1.6MHz PWM operation

? Internal soft start

? Output voltage a djustable down to 0.795V

? Cycle by cycle current limit

? Current Mode control

? Short circuit protection

? Logic Control Shutdown EN can be short to V IN

? Thermal shutdown and UVLO

? Available in SOT-26 Package

APPLICATION

? Smart/Industrial/Power Meters

? Indu strial Applications

? Automotive Applications