WL2821 Datasheet PDF - WillSEMI
| Part Number | WL2821 | |
| Description | CMOS LDO | |
| Manufacturers | WillSEMI | |
| Logo |  |
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There is a preview and WL2821 download ( pdf file ) link at the bottom of this page. Total 9 Pages | ||
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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
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WL2821
Typical characteristics (Ta=25oC, VIN=2.5V, VOUT = 1.05V CIN=COUT=1uF, unless otherwise noted)
60 70
50
40
30
20
10 WL2821D105
VOUT=1.05 IOUT=0mA
0
012345
Input Voltage(V)
Quiescent current vs. Supply voltage
60
50
40
30
20
10 WL2821D33
VOUT=3.3V IOUT=0mA
0
012345
Input Voltage(V)
Quiescent current vs. Supply voltage
1.2 3.5
1.0
0.8
0.6
0.4
WL2821D105
VOUT=1.05V
0.2 IO=1mA
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Input Voltage(V)
Output voltage vs. Supply voltage
3.0
2.5
2.0
1.5
1.0 WL2821D33
VOUT=3.3V
0.5 IOUT=1mA
0.0
012345
Input Voltage(V)
Output voltage vs. Supply voltage
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
WL2821D105
T=25oC
VIN=2.1V
VIN=4.2V
VIN=5V
100 200 300 400
Output Current(mA)
500
3.5
3.0
2.5
2.0
1.5
WL2821D33
1.0
T=25oC
VIN=4.3V
0.5 VIN=5V
VIN=5.5V
0.0
0 100 200 300 400
Output Current(mA)
500
Output voltage vs. Output current
Output voltage vs. Output current
Will Semiconductor Ltd.
5 Jun, 2016 – Rev 0.9
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for WL2821 electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ WL2821.PDF Datasheet ] | |
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