降压IC规格书-A19Q,A19W,A19E,A19R芯片
- 2020-08-05 20:29:00
- 夸克微 原创
- 6144
A19Q,A19W,A19E,A19R,A19T,A19Y,A19U,A19I,A191,A19O,A190,A19P,A19A,A19S,A19D,A19F,A19G,A19H,A19J,A19K,A19L,A19Z,A19X,A19C,A19V,A19B,A19N,A19M.
A20Q,A20W,A20E,A20R,A20T,A20Y,A20U,A20I,A201,A20O,A200,A20P,A20A,A20S,A20D,A20F,A20G,A20H,A20J,A20K,A20L,A20Z,A20X,A20C,A20V,A20B,A20N,A20M.
GENERALDESCRIPTION
The PW2058 is a constant frequency,current mode step-down converter. The device integrates a main switch and asynchronous rectifier for high efficiency without an external Schottky diode.It is ideal for powering portable equipment that runs from a single cellLithium-Ion (Li+) battery. The output voltage can be regulated as low as 0.6V. ThePW2058 can also run at 100% duty cycle for low dropout operation,extending battery life in portable system. This device offers two operation modes,PWM control and PFM Mode switching control, which allows a high efficiency overthe wider range of the load.
FEATURES
l High Efficiency: Up to 96%
l 1.5MHz Constant Frequency Operation
l 800mA Output Current
l No Schottky Diode Required
l 2V to 6V Input Voltage Range
l Output Voltage as Low as 0.6V
l PFM Mode for High Efficiency in LightLoad
l 100% Duty Cycle in Dropout Operation
l Low Quiescent Current: 20μA
