WL2852K
WL2852K
High Input Voltage, Low Quiescent Current
LDO
Descriptions
The WL2852K series is a high accuracy, high input
voltage low quiescent current, high speed, and low
dropout Liner regulator with high ripple rejection. The
device is manufactured with Bi-CMOS process.
The WL2852K offers over-current limit and over
temperature protection to ensure the device working in
well conditions.
The WL2852K regulators are available in standard
SOT-89-3L packages. Standard products are Pb-free
and Halogen-free.
SOT-89
Http://www.sh-willsemi.com
1
2
3
VOUT GND VIN
Pin Configuration (Top View)
: 4.75V~40V
: 1.8V~5.7V
Features
Supply Voltage
Output Range
Output Current
PSRR
Dropout Voltage
Output Accuracy : <+/-2%
: 100mA (Up to 150mA Typ.)
: 60dB @ 100Hz
: 800mV @ I
OUT
=100mA
2852K**
YYWW
Quiescent Current : 10μA@V
IN
=7V(Typ.)
Recommend Capacitor : 10uF
For detail marking information, please see page 9.
Marking
Order Information
For detail order information, please see page 9.
Will Semiconductor Ltd.
1
Mar 2015 – Rev.1.5
WL2852K
Typical Application
V
IN
C1
10uF
V
IN
WL2852
GND
V
OUT
V
OUT
C2
10uF
GND
Pin Description
PIN
1
2
3
Symbol
VOUT
GND
VIN
Description
Voltage Output
Ground
Voltage Input
Block Diagram
VIN
VOUT
V
REF
Will Semiconductor Ltd.
2
Mar 2015 – Rev.1.5
WL2852K
Absolute Maximum Ratings
Parameter
Power Dissipation
V
IN
Range
V
OUT
Range
Lead Temperature Range
Storage Temperature Range
Operating Junction Temperature Range
ESD MM
ESD HBM
Value
Internal limited
-0.3½45
-0.3½6.5
260
-55 ~ 150
150
400
4K
Unit
mW
V
V
o
o
o
C
C
C
V
V
Recommend Operating Ratings
Parameter
Operating Supply voltage
Operating Temperature Range
Thermal Resistance (On PCB) , R
θJA
Power Dissipation
Value
4.75½40
-40½85
43.5
1000
o
Unit
V
o
C
C/W
mW
Electronics Characteristics
(Ta=25
o
C, V
IN
=12V, C
IN
=C
OUT
=10uF, unless otherwise noted)
Symbol
V
IN
V
OUT
Parameter
Input Range
Output Range
Test Condition
I
OUT
=10mA
I
OUT
=10mA
WL2852K SPEC
Min.
Typ.
Max.
Unit
V
V
V
V
V
V
mA
μA
4.75
V
OUT
*0.98
5.586
5.194
4.9
3.234
180
V
OUT
5.7
5.3
5.0
3.3
280
10
11
13
8
800
0.02
0.1
0.6
-100
f=100Hz
f=1KHz
f=10KHz
60
45
35
165
30
±0.5
40
V
OUT
*1.02
5.814
5.406
5.1
3.366
460
15
16
20
12
1200
ΔV
OUT
Output Voltage
V
IN
=12V,I
OUT
=10mA
I
OUT_PK
I
Q
Maximum Output Current V
IN
=12V, R
L
=1Ω
V
IN
=7V, No load
Quiescent Current
V
IN
=24V, No load
V
IN
=40V, No load
I
OUT
=1mA
I
OUT
=100mA
V
IN
=7--24V,V
OUT
=5V I
OUT
=1mA
V
IN
=7--45V,V
OUT
=5V I
OUT
=1mA
V
IN
=12V, I
OUT
=1--100mA
I
OUT
=10mA
V
IN
=10V
V
PP
=0.5V
I
OUT
=1mA
V
DROP
△
V
Line
△
V
Load
e
NO
PSRR
T
SD
T
SD_HYS
ΔVo/ΔT
Dropout Voltage
Line Regulation
Load Regulation
Output Noise
Ripple Rejection
Thermal Protection
Thermal Protection Hys
Temperature Cofficient
mV
%/V
%
+100
μV
dB
℃
℃
mv/℃
V
IN
=12V, I
OUT
=1mA
V
IN
=12V, I
OUT
=1mA
V
IN
=12V, I
OUT
=1mA
3
Will Semiconductor Ltd.
Mar 2015 – Rev.1.5
WL2852K
Typical characteristics (Ta=25oC, CIN=COUT=10uF, unless otherwise noted)
20
18
20
18
Quiescent Current ( uA )
16
14
12
10
8
6
4
2
0
0
5
10
15
20
25
30
35
40
45
Quiescent Current ( uA )
16
14
12
10
8
6
4
2
0
0
5
10
15
20
25
30
35
40
45
V
OUT
= 3.3V
V
OUT
= 5.0V
Input Voltage ( V )
Input Voltage ( V )
Quiescent Current vs. Input Voltage
Quiescent Current vs. Input Voltage
3.50
3.45
3.40
5.25
5.20
5.15
Output Voltage ( V )
3.35
3.30
3.25
3.20
3.15
3.10
3.05
3.00
-40
Output Voltage ( V )
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
4.70
I
O
= 1 mA
V
OUT
= 3.3V
-20
0
20
40
60
80
100
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
120
140
160
I
O
= 1 mA
V
OUT
= 5.0V
-20
0
20
40
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
60
80
100
4.65
-40
Temperature ( C )
o
Temperature ( C )
o
Output Voltage vs. Temperature
Output Voltage vs. Temperature
3.5
5.5
5.0
3.0
4.5
Output Voltage ( V )
Output Voltage ( V )
2.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.0
1.5
1.0
0.5
I
OUT
= 1 mA
I
OUT
= 10 mA
I
OUT
= 100 mA
0
5
10
15
20
25
30
35
40
45
I
OUT
= 1 mA
I
OUT
= 10 mA
I
OUT
= 100 mA
0
5
10
15
20
25
30
35
40
45
0.0
Input Voltage ( V )
Input Voltage ( V )
Output Voltage vs. Input Voltage
Output Voltage vs. Input Voltage
Will Semiconductor Ltd.
4
Mar 2015 – Rev.1.5
WL2852K
3.5
3.0
5.5
5.0
4.5
Output Voltage ( V )
Output Voltage ( V )
2.5
2.0
1.5
1.0
0.5
0.0
0
-40 C
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
40
80
120
160
200
240
O
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
-40 C
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
40
80
120
160
200
240
O
Load Current ( mA )
Load Current ( mA )
Output Voltage vs. Load Current
Output Voltage vs. Load Current
3.5
3.0
5.5
5.0
4.5
Output Voltage ( V )
Output Voltage ( V )
2.5
2.0
1.5
1.0
0.5
0.0
0
40
25 C
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
80
120
160
200
240
O
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
40
25 C
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
80
120
160
200
240
O
Load Current ( mA )
Load Current ( mA )
Output Voltage vs. Load Current
Output Voltage vs. Load Current
3.5
3.0
5.5
5.0
4.5
Output Voltage ( V )
Output Voltage ( V )
2.5
2.0
85 C
1.5
1.0
0.5
0.0
0
20
40
60
80 100 120 140 160 180 200
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
O
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
20
40
60
80 100 120 140 160 180 200
85 C
V
IN
= 6 V
V
IN
= 12 V
V
IN
= 24 V
V
IN
= 30 V
O
Load Current ( mA )
Load Current ( mA )
Output Voltage vs. Load Current
Output Voltage vs. Load Current
Will Semiconductor Ltd.
5
Mar 2015 – Rev.1.5
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