Ultra low dropout, 800mA, CMOS LDO
The WL2803K series are ultra low dropout, Low
quiescent current, high PSRR CMOS LDO. The
dropout voltage is 260mV (Typ.) at 800mA load
Using CMOS construction, the quiescent current
consumed by the WL2803K is typically 150uA over the
entire input voltage range, making it attractive for
consumer, networking applications that demand high
The WL2803K series are available in wide output
voltage range version from 1.2V to 3.3V with 0.1V step.
Standard output voltages are 1.8V, 3.3V. Other output
voltage options are available upon request.
The WL2803K series offer thermal shutdown
(OTP) and current limit functions, to assure the stability
of chip and power system at wrong condition, and it
uses trimming technique to guarantee output voltage
accuracy within ±2%.
The WL2803K regulators are available in
SOT-89-5L packages. Standard products are Pb-free
Pin Configuration (Top View)
Output voltage : 1.8V, 3.3V (Or upon request)
Output current : 800mA
: 65dB @ 1KHz
Dropout voltage : 260mV @ IOUT=0.8A
Quiescent current : 150μA Typ.
2803K = Device code
** = Voltage code (33: 3.3V)
YY = Year code
WW = Week code
For detail information, Please refer to page 9.
Computer, Graphic card
Network communication equipments
Others portable electronics devices
Will Semiconductor Ltd.
1 Aug. 2013 – Rev1.4