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WillSEMI

WL2821 Datasheet Preview

WL2821 Datasheet

CMOS LDO

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WL2821
Low noise, High PSRR, High speed, CMOS
LDO
Descriptions
The WL2821 series is a high accuracy, low noise, high
speed, low dropout CMOS Linear regulator with high
ripple rejection. The devices offer a new level of cost
effective performance in cellular phones, laptop and
notebook computers, and other portable devices.
The WL2821 has the fold-back maximum output
current which depends on the output voltage. So the
current limit functions both as a short circuit protection
and as an output current limiter.
The WL2821 regulators are available in DFN1x1-4L
Package. Standard products are Pb-free and
Halogen-free.
Features
Input voltage
: 1.6V~5.5V
Output range
: 0.9V~3.3V
Output current : 300mA Typ.
PSRR
: 70dB @ 217Hz
Dropout voltage : 250mV @ IOUT=300mA
Quiescent current : 50μA Typ.
Shut-down current : < 1μA
Recommend capacitor : 1uF
Applications
MP3/MP4 Players
Cellphones, radiophone, digital cameras
Bluetooth, wireless handsets
Others portable electronics device
WL2821
Http://www.sh-willsemi.com
DFN1X1-4L
Pin Configuration (Top View)
B: Device Code
* : Voltage Code
Y : Year Code
W: Week Code
For detail marking information, please see page 9.
Marking
Order Information
For detail order information, please see page 9.
Will Semiconductor Ltd.
1 Jun, 2016 – Rev 0.9




WillSEMI

WL2821 Datasheet Preview

WL2821 Datasheet

CMOS LDO

No Preview Available !

Typical Application
WL2821
Pin Description
DFN1X1-4L
PIN Symbol Description
1 VOUT Output
2 GND Ground
3 EN Enable (Active high)
4 VIN Input
EP GND level, this pin must
connect to GND.
Block Diagram
Will Semiconductor Ltd.
2 Jun, 2016 – Rev 0.9


Part Number WL2821
Description CMOS LDO
Maker WillSEMI
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