WL2820D
WL2820D
Low noise, High PSRR, High speed, CMOS
LDO
https://www.omnivision-group.com/
Descriptions
The WL2820D series is a high accuracy, low noise,
high speed, low dropout CMOS Linear regulator with
DFN1X1-4L
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 WL2820D 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 WL2820D regulators are available in standard
Pin Configuration (Top View)
DFN1x1-4L Package. Standard products are Pb-free
and Halogen-free.
Features
Input voltage
: 2.2V~5.5V
Output range
: 1.0V~3.8V
Output current
: 300mA
E: Package Code
PSRR
: 70dB @ 217Hz
* : Voltage Code
Dropout voltage
: 250mV @ IOUT=300mA
Quiescent current : 42μA Typ.
Shut-down current : < 1μA
Discharge Resistance : 100Ω
Recommend capacitor : 1uF
Y : Year Code
W: Week Code
For detail marking information, please see page 8.
Marking
Applications
MP3/MP4 Players
Cellphones, radiophone, digital cameras
Bluetooth, wireless handsets
Others portable electronics device
Will Semiconductor Ltd.
Order Information
For detail order information, please see page 8.
1
Dec, 2021 – Rev 2.1
WL2820D
Typical Application
Pin Description
DFN1X1-4L
PIN
Symbol
1
VOUT
Output
2
GND
Ground
3
EN
Enable (Active high)
4
VIN
Input
EP
Description
GND level, this pin must
connect to GND.
Block Diagram
Will Semiconductor Ltd.
2
Dec, 2021 – Rev 2.1
WL2820D
Absolute Maximum Ratings
Parameter
Value
Power Dissipation, PD@TA=25℃
400
VIN Range
-0.3~6.5
V
VEN Range
-0.3~VIN
V
VOUT Range
-0.3~VIN
V
IOUT
Internally Limited
Lead Temperature Range
260
o
Storage Temperature Range
-55 ~ 150
o
Operating Junction Temperature Range
150
o
Moisture Sensitivity Level
Level-1
ESD Ratings
Unit
mW
C
C
C
HBM
8000
V
MM
400
V
Recommend Operating Ratings
Parameter
Value
Operating Supply voltage
2.2~5.5
Operating Temperature Range
-40~85
Thermal Resistance, RθJA
250
Will Semiconductor Ltd.
3
Unit
V
C
o
C/W
o
Dec, 2021 – Rev 2.1
WL2820D
Electronics Characteristics (Ta=25oC, VIN=VOUT+1V, CIN=COUT=1uF, unless otherwise noted)
Parameter
Symbol
Condition
VOUT ≤1.5V, VIN=2.7V, IOUT=1mA
Output Voltage
VOUT
VOUT>1.5V, IOUT=1mA
Current Limit
Dropout Voltage
ILIM
VDROP
VEN=VIN
Min.
0.97
VOUT
0.98
VOUT
Typ.
VOUT
VOUT
Max.
Unit
1.03
VOUT
1.02
V
VOUT
300
mA
VOUT=3.3V, IOUT=300mA
220
330
VOUT=3.0V, IOUT=300mA
240
360
VOUT=2.8V, IOUT=300mA
250
375
VOUT=2.5V, IOUT=300mA
280
420
VOUT=1.8V, IOUT=300mA
400
600
VOUT≤1.5V, IOUT=300mA
Vin-min=2.2V
0.01
0.1
%/V
mV
Line Regulation
△VLINE
VIN=2.7~5.5V, IOUT=1mA
Load Regulation
△VLoad
VOUT=2.8V , IOUT=1~300mA
10
30
mV
Quiescent Current
IQ
VOUT=2.8V, IOUT=0
42
70
μA
Short Current
ISHORT
VEN=VIN, VOUT Short to GND with 1Ω
80
Shut-down Current
ISHDN
VEN=0V
1.0
VIN=(VOUT+1V)DC+0.5VP-P
Power Supply Rejection Rate
PSRR
mA
μA
70
F=217Hz ,Iout=10mA
dB
VIN=(VOUT+1V)DC+0.5VP-P
60
F=10KHz, Iout=10mA
EN logic high voltage
VENH
VIN=5.5V, IOUT=1mA
EN logic low voltage
VENL
VIN=5.5V, VOUT=0V
0.4
V
EN Input Current
IEN
VEN= 0 to 5.5V
1.0
μA
Output Noise Voltage
eNO
10Hz to 100KHz, COUT=1μF
Thermal shutdown threshold
TSD
Thermal shutdown hysteresis
Auto-discharge Nch Tr.
ON Resistance
Will Semiconductor Ltd.
△ TSD
RLOW
VIN=4.0V,VCE=0V
4
1.2
V
55
μVRMS
C
165
o
30
o
100
C
Ω
Dec, 2021 – Rev 2.1
WL2820D
Typical characteristics (Ta=25oC, VIN=3.8V, VOUT = 2.8V CIN=COUT=1uF, unless otherwise noted)
Quiescent current vs. Supply voltage
Quiescent current vs. Supply voltage
3.0
1.5
2.5
0.9
0.6
VOUT=1.2V
IOUT=1mA
IOUT=200mA
0.3
0.0
0
1
2
3
4
Output Voltage(V)
Output Voltage(V)
1.2
2.0
1.5
1.0
0.0
5
VOUT=2.8V
IOUT=1mA
IOUT=200mA
0.5
0
1
2
3
4
5
Input Voltage(V)
Input Voltage(V)
Output voltage vs. Supply voltage
Output voltage vs. Supply voltage
Output voltage vs. Output current
Will Semiconductor Ltd.
Output voltage vs. Output current
5
Dec, 2021 – Rev 2.1
WL2820D
Output Voltage vs. Temperature
Output Voltage vs. Temperature
Dropout Voltage vs. Output Current
Will Semiconductor Ltd.
PSRR
6
Dec, 2021 – Rev 2.1
WL2820D
Soft Start form EN
Soft Start form EN
EN Shutdown
EN Shutdown
Load Step
Load Step
Line Step
Will Semiconductor Ltd.
Line Step
7
Dec, 2021 – Rev 2.1
WL2820D
ORDER INFORMATION
Ordering No.
Vout
(V)
Package
Operating
Temperature
WL2820D105-4/TR
1.05
DFN1x1-4L
-40~+85°C
WL2820D11-4/TR
1.1
DFN1x1-4L
-40~+85°C
WL2820D12-4/TR
1.2
DFN1x1-4L
-40~+85°C
WL2820D15-4/TR
1.5
DFN1x1-4L
-40~+85°C
WL2820D18-4/TR
1.8
DFN1x1-4L
-40~+85°C
WL2820D21-4/TR
2.1
DFN1x1-4L
-40~+85°C
WL2820D22-4/TR
2.2
DFN1x1-4L
-40~+85°C
WL2820D25-4/TR
2.5
DFN1x1-4L
-40~+85°C
WL2820D27-4/TR
2.7
DFN1x1-4L
-40~+85°C
WL2820D28-4/TR
2.8
DFN1x1-4L
-40~+85°C
WL2820D285-4/TR
2.85
DFN1x1-4L
-40~+85°C
WL2820D30-4/TR
3.0
DFN1x1-4L
-40~+85°C
WL2820D33-4/TR
3.3
DFN1x1-4L
-40~+85°C
WL2820D38-4/TR
3.8
DFN1x1-4L
-40~+85°C
Marking
Shipping
EC
Tape and Reel,
YW
10000
ED
Tape and Reel,
YW
10000
EE
Tape and Reel,
YW
10000
EG
Tape and Reel,
YW
10000
EH
Tape and Reel,
YW
10000
EX
Tape and Reel,
YW
10000
EJ
Tape and Reel,
YW
10000
EK
Tape and Reel,
YW
10000
EY
Tape and Reel,
YW
10000
EL
Tape and Reel,
YW
10000
EV
Tape and Reel,
YW
10000
EM
Tape and Reel,
YW
10000
EN
Tape and Reel,
YW
10000
EQ
Tape and Reel,
YW
10000
Marking:
E*
= Device Code
Y
= Year
W
= Week
Will Semiconductor Ltd.
8
Dec, 2021 – Rev 2.1
WL2820D
PACKAGE OUTLINE DIMENSIONS
DFN1x1-4L
D
Ⅰ
1.
b
k
D
2.
L
E
E1
1
Ⅰ
e
TOP VIEW
0.180
BOTTOM VIEW
A
0.375
0.260
Ⅲ
1.
1.200
A3
A1
0
40
0.
5
23
0.
2.
0.065
0.
40
0
Ⅲ
(x2)
SIDE VIEW
0.910
RECOMMENDED LAND PATTERN(Unit:mm)
Symbol
Dimensions in Millimeters
Min.
Typ.
Max.
A
0.32
0.37
0.40
A1
-
-
0.05
A3
0.13 Ref.
b
0.17
0.22
0.28
L
0.20
0.25
0.30
D
0.95
1.00
1.05
E
0.95
1.00
1.05
D1
0.43
0.48
0.53
E1
0.43
0.48
0.53
K
0.15
-
-
e
Will Semiconductor Ltd.
·
0.65BSC
9
Dec, 2021 – Rev 2.1
WL2820D
TAPE AND REEL INFORMATION
Reel Dimensions
RD
Reel Dimensions
Tape Dimensions
W
P1
Quadrant Assignments For PIN1 Orientation In Tape
Q1
Q2
Q1
Q2
Q3
Q4
Q3
Q4
RD
Reel Dimension
W
Overall width of the carrier tape
P1
Pitch between successive cavity centers
Pin1
Pin1 Quadrant
Will Semiconductor Ltd.
User Direction of Feed
7inch
13inch
1 8mm
12mm
16mm
2mm
4mm
8mm
Q1
Q2
Q3
10
Q4
Dec, 2021 – Rev 2.1