Datasheet Microchip MIC23051-945YML-TR — 数据表

MIC23051
4MHz PWM Buck Regulator with
HyperLight Loadв„ў and Voltage Scaling General Description Features The Micrel MIC23051 is a high efficiency 600mA PWM
HyperLight Loadв„ў Input voltage: 2.7V to 5.5V
synchronous buck (step-down) regulator featuring 600mA output current
HyperLight Loadв„ў, a patented switching scheme that Fixed output voltage from 0.72V to 3.3V
offers best in class light load efficiency and transient Output voltage scaling option
performance while providing very small external Ultra fast transient response
components and low output ripple at all loads. 20ВµA typical quiescent current
The MIC23051 has an output voltage scaling feature that
can toggles between two different voltage levels. 4MHz in CCM PWM operation in normal mode
The MIC23051 also has a very low typical quiescent 0.47ВµH to 2.2ВµH inductor
current draw of 20ВµA and can achieve over 85% efficiency Low voltage output ripple
even at 1mA. The device allows operation with a tiny
– 25mVpp in HyperLight Load mode
inductor ranging from 0.47ВµH to 2.2ВµH and uses a small
– 3mV output voltage ripple in full PWM mode
output capacitor that enables a sub-1mm height solution. >93% efficiency
In contrast to traditional light load schemes HyperLight ~85% at 1mA
Loadв„ў architecture does not need to trade off control
speed to obtain low standby currents and in doing so the Micropower shutdown
device only needs a small output capacitor to absorb the Available in 8-pin 2mm x 2mm MLFВ®
load transient as the powered device goes from light load –40В°C to +125В°C junction temperature range …