WL2810
WL2810
Low noise, High PSRR, High speed, CMOS
LDO
Descriptions
The WL2810 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 WL2810 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 WL2810 regulators are available in standard
SOT-353 package and DFN1x1-4L Package. Standard
products are Pb-free and Halogen-free.
Pin Configuration (Top View)
SOT-353
DFN1X1-4L
Http://www.sh-willsemi.com
Features
Input voltage
Output range
Output current
PSRR
Dropout voltage
: 2.2V~5.5V
: 1.0V~3.3V
: 300mA
: 70dB @ 217Hz
: 250mV @ I
OUT
=300mA
B : Package Code
* : Voltage Code
M: Month(A~Z)
D: Package Code
* : Voltage Code
Y : Year Code
W: Week Code
For detail marking information, please see page 10.
B*M
Quiescent current : 42μA Typ.
Shut-down current : < 1μA
Recommend capacitor : 1uF
Applications
MP3/MP4 Players
Cellphones, radiophone, digital cameras
Bluetooth, wireless handsets
Others portable electronics device
Marking
Order Information
For detail order information, please see page 10.
Will Semiconductor Ltd.
1
Aug, 2017 – Rev 1.9
WL2810
Electronics Characteristics
(Ta=25
o
C, V
IN
=V
OUT
+1V, C
IN
=C
OUT
=1uF, unless otherwise noted)
Parameter
Symbol
Condition
V
OUT
≤
1.5V, V
IN
=2.7V, I
OUT
=1mA
Output Voltage
V
OUT
V
OUT
>1.5V,
I
OUT
=1mA
Current Limit
I
LIM
V
EN
=V
IN
V
OUT
=3.3V, I
OUT
=300mA
V
OUT
=3.0V, I
OUT
=300mA
Dropout Voltage
V
DROP
V
OUT
=2.8V, I
OUT
=300mA
V
OUT
=2.5V, I
OUT
=300mA
V
OUT
=1.8V, I
OUT
=300mA
V
OUT
≤1.5V,
I
OUT
=300mA
Line Regulation
Load Regulation
Quiescent Current
Short Current
Shut-down Current
△V
LINE
△V
Load
I
Q
I
SHORT
I
SHDN
V
IN
=2.7~5.5V, I
OUT
=1mA
V
OUT
=2.8V , I
OUT
=1~300mA
V
OUT
=2.8V, I
OUT
=0
V
EN
=V
IN,
V
OUT
Short to GND with 1
Ω
V
EN
=0V
V
IN
=(V
OUT
+1V)
DC
+0.5V
P-P
Power Supply Rejection Rate
PSRR
F=217Hz ,Iout=10mA
V
IN
=(V
OUT
+1V)
DC
+0.5V
P-P
F=10KHz, Iout=10mA
EN logic high voltage
EN logic low voltage
EN Input Current
Output Noise Voltage
Thermal shutdown threshold
Thermal shutdown hysteresis
V
ENH
V
ENL
I
EN
e
NO
T
SD
△
T
SD
V
IN
=5.5V, I
OUT
=1mA
V
IN
=5.5V, V
OUT
=0V
V
EN
= 0 to 5.5V
10Hz to 100KHz, C
OUT
=1
μF
55
165
30
1.2
0.4
1.0
70
dB
60
V
V
Min.
0.97
V
OUT
0.98
V
OUT
300
Typ.
V
OUT
V
OUT
Max.
1.03
V
OUT
1.02
V
OUT
Unit
V
mA
220
240
250
280
400
Vin-min=2.2V
0.01
10
42
80
1.0
0.1
30
70
%/V
mV
330
360
375
420
600
mV
μA
mA
μA
μA
μV
RMS
o
o
C
C
Will Semiconductor Ltd.
4
Aug, 2017 – Rev 1.9
WL2810
Typical characteristics
(Ta=25
o
C, V
IN
=3.8V, V
OUT
= 2.8V C
IN
=C
OUT
=1uF, unless otherwise noted)
Quiescent current vs. Supply voltage
Quiescent current vs. Supply voltage
Output voltage vs. Supply voltage
Output voltage vs. Supply voltage
Output voltage vs. Output current
Output voltage vs. Output current
Will Semiconductor Ltd.
5
Aug, 2017 – Rev 1.9
能源基础设施
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