WL2836D
WL2836D
Low noise, High PSRR, High speed, CMOS
LDO
Descriptions
The WL2836D series is a high accuracy, low noise,
high speed, high PSRR, 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 WL2836D 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 WL2836D regulators are available in standard
DFN1x1-4L Package. Standard products are Pb-free
and Halogen-free.
Pin Configuration (Top View)
DFN1x1-4L
Http://www.sh-willsemi.com
Features
Input Voltage Range
Output Voltage Range
Output current
Quiescent current
Shut-down current
Dropout voltage
PSRR
:1.4V~5.5V
: 0.9V~3.3V
: 300mA
: 50μA Typ.
: < 1μA
: 140mV @ I
OUT
=0.3A
: 78dB @ 1kHz, V
OUT
=1.8V
: 13×V
OUT
μV
RMS
:±1% @ V
OUT
>2V
: 1μF
I : Device Code
* : Voltage Code
Y : Year Code
W: Week Code
For detail marking information, please see page 14.
Low Output Voltage Noise
Output Voltage Tolerance
Recommend capacitor
Marking
Thermal-Overload and Short-Circuit Protection
Applications
MP3/MP4 Players
Cellphones, radiophone, digital cameras
Bluetooth, wireless handsets
Others portable electronics device
Order Information
For detail order information, please see page 14.
Will Semiconductor Ltd.
1
Oct, 2019 – Rev 1.7
WL2836D
Typical Application
Pin Description
DFN1x1-4L
PIN
1
2
3
4
EP
Symbol
V
OUT
GND
EN
V
IN
Description
Output
Ground
Enable (Active high)
Input
GND level, this pin must
connect to GND.
Block Diagram
Will Semiconductor Ltd.
2
Oct, 2019 – Rev 1.7
WL2836D
Absolute Maximum Ratings
Parameter
Power Dissipation, P
D
@T
A
=25℃
V
IN
Range
V
EN
Range
V
OUT
Range
I
OUT
Lead Temperature Range
Storage Temperature Range
Operating Junction Temperature Range
MSL
ESD Ratings
HBM
MM
Value
400
-0.3½6.5
-0.3½V
IN
-0.3½V
IN
Internally Limited
260
-55 ~ 150
150
Level-1
7500
300
V
V
o
o
o
Unit
mW
V
V
V
C
C
C
Recommend Operating Ratings
Parameter
Operating Supply voltage
Operating Temperature Range
Thermal Resistance, R
θJA
(DFN1x1-4L)
Value
1.4½5.5
-40½85
250
o
Unit
V
o
C
C/W
Will Semiconductor Ltd.
3
Oct, 2019 – Rev 1.7
WL2836D
Electronics Characteristics
(Ta=25
o
C, V
IN
=V
OUT
+1V, C
IN
=C
OUT
=1μF, I
OUT
=1mA，unless otherwise noted)
Parameter
Output Voltage
Input Voltage
Current Limit
Symbol
V
OUT
≤
2V
V
OUT
V
IN
I
LIM
V
EN
=V
IN
V
OUT
>2V
Condition
Min.
-20
0.99×
V
OUT
1.4
300
Typ.
V
OUT
V
OUT
Max.
+20
1.01×
V
OUT
5.5
Unit
mV
V
V
mA
V
OUT
=3.3V, I
OUT
=300mA
V
OUT
=3V, I
OUT
=300mA
Dropout Voltage
V
DROP
V
OUT
=2.8V, I
OUT
=300mA
V
OUT
=2.5V, I
OUT
=300mA
V
OUT
=1.6V, I
OUT
=300mA
V
OUT
=1V, 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
=V
OUT
+0.5V~5.5V
I
OUT
=1~300mA
V
OUT
=2.8V, I
OUT
=0
V
EN
=V
IN,
V
OUT
Short to GND
V
EN
=0V
V
IN
=(V
OUT
+1V)
DC
+
Power Supply Rejection Rate
PSRR
0.5V
P-P
f=100Hz
f=1kHz
f=10kHz
f=100kHz
f=1MHz
1
118
122
130
140
205
370
1
15
50
120
185
192
204
220
320
555
5
28
90
1.0
mV
mV
μA
mA
μA
dB
dB
dB
dB
dB
V
0.4
V
nA
μV
RM
S
℃
℃
Ω
mV
80
78
65
56
43
I
OUT
=10mA，
V
OSET
=1.8V
EN logic high voltage
EN logic low voltage
EN Input Current
Output Noise Voltage
Thermal shutdown threshold
Thermal shutdown hysteresis
Auto-discharge Nch Tr, ON
Resistance
V
ENH
V
ENL
I
EN
e
NO
T
SD
△
T
SD
R
LOW
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
=1μF
120
13×
V
OUT
160
30
V
IN
=4V, V
CE
=0V, V
OUT
=2.8V
120
Will Semiconductor Ltd.
4
Oct, 2019 – Rev 1.7
Typical characteristics
(Ta=25
o
C, V
IN
=V
OUT
+1V, I
OUT
=1mA，C
IN
=C
OUT
=1μF, unless otherwise noted)
V
OUT
=1.2V
V
OUT
=1.8V
V
OUT
=2.8V
Will Semiconductor Ltd.
5
Oct, 2019 – Rev 1.7
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