MT3905USPR SOP8 同步降压变换器 M3TEK

Description
The MT3905 is a fully integrated high efficiency
synchronous step-down converter which
requires minimum number of external
components. It offers very compact solution with
up to 4A continuous output current over a wide
input range.
The MT3905 employs proprietary Constant
On-Time (COT) control scheme providing
superior transient response and maintaining
constant switching frequency under the
continuous conduction mode operation. The
internal ramp compensation network allows
stable operation with ultra-low equivalent series
resistance (ESR) output ceramic capacitors
without using external compensation network.
An error amplifier in the control loop provides
excellent line and load regulation.
The MT3905 integrates extensive protection
functions include: UVLO, OCP, OVP and thermal
shutdown. Input under- voltage lockout is
internally set as 3.8V.
The unique ultrasonic pulse-skipping mode
(MT3905U) maintains the switching frequency
above 25kHz, which eliminates noise in audio
applications. Other features include pulse
skipping mode (MT3905N), which maximizes
efficiency in light-load applications.
The converter is available in a small 8pin
SOP8-EP and DFN14L 4x3 package.