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WillSEMI

WL2803K Datasheet Preview

WL2803K Datasheet

CMOS LDO

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WL2803K
Ultra low dropout, 800mA, CMOS LDO
WL2803K
Http://www.sh-willsemi.com
Descriptions
The WL2803K series are ultra low dropout, Low
quiescent current, high PSRR CMOS LDO. The
dropout voltage is 260mV (Typ.) at 800mA load
current.
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
output current.
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
and Halogen-free.
SOT-89-5L
VOUT
5
NC
4
12
VIN GND
3
EN
Pin Configuration (Top View)
54
2803K**
YYWW
Features
Input voltage
: 2.5V~5.5V
Output voltage : 1.8V, 3.3V (Or upon request)
Output current : 800mA
PSRR
: 65dB @ 1KHz
Dropout voltage : 260mV @ IOUT=0.8A
Output noise
: 100uV
Quiescent current : 150μA Typ.
Applications
123
2803K = Device code
** = Voltage code (33: 3.3V)
YY = Year code
WW = Week code
Marking
Order Information
For detail information, Please refer to page 9.
LCD TV
STB
Computer, Graphic card
Network communication equipments
Others portable electronics devices
Will Semiconductor Ltd.
1 Aug. 2013 Rev1.4




WillSEMI

WL2803K Datasheet Preview

WL2803K Datasheet

CMOS LDO

No Preview Available !

Typical Application
VIN
4.7uF
1
2
ON
OFF
3
Pin Description
WL2803K
PIN Symbol Description
5 VOUT
4.7uF
1 VIN Input
2 GND Ground
3 EN Enable, Active High
4 NC Not Connect
4 5 VOUT Output
Block Diagram
VIN
EN
Current
Limit
VREF
Enable
Control
OTP
GND
VOUT
Will Semiconductor Ltd.
2 Aug. 2013 Rev1.4


Part Number WL2803K
Description CMOS LDO
Maker WillSEMI
PDF Download

WL2803K Datasheet PDF





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