降压IC规格书-A19Q,A19W,A19E,A19R芯片

2020-08-05 20:29:00
夸克微
原创
2441

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


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