WL2805
WL2805
Low power consumption, CMOS LDO
Http://www.sh-willsemi.com
Descriptions
The WL2805 series are low dropout linear
regulators
and
optimized
to
provide
a
high
performance solution for battery power system to
deliver low quiescent current. The devices offer a new
SOT-23-3L
SOT-23-5L
level of cost effective performance in cellular phones,
laptop and notebook computers, and other portable
devices.
The WL2805 series are designed to make use of
low cost ceramic capacitors which ensure the stability
of the output current, and enhance the efficiency in
order to prolong the battery life of those portable
devices.
The
WL2805
regulators
are
available
WL2805N**
in
WL2805E**
SOT-23-3L, SOT-23-5L packages. Standard products
Pin Configuration (Top View)
are Pb-free and Halogen free products.
Features
Quiescent current
: 3μA Typ.
Input voltage
: 2.3V ~ 5.5V
Output voltage
: 1.2V ~ 3.3V
Output current
: 250mA @ VOUT>2V
Output current
: 100mA @ VOUT≤2V
Dropout voltage
: 100mV @ 100mA
Recommend capacitor
: 1uF
Operating Temperature
: -40 ~ +85 °C
Output short protection
For detail marking information please see page 9.
Marking
Applications
MP3/MP4 Players
Cell phones
Bluetooth earphone
Wireless mouse
Others electronics devices
Will Semiconductor Ltd.
Order Information
For detail order information please see page 9.
1
Sep. 2019 – Rev2.8
WL2805
Typical Applications
Pin Descriptions
PIN
Symbol
Description
1
GND
Ground
2
VOUT
Output
3
VIN
PIN
Symbol
1
VIN
Input
2
GND
Ground
3
CE
Chip Enable, Active High
4
NC
Not connected
5
VOUT
Input
Description
Output
Block Diagram
WL2805N**
Will Semiconductor Ltd.
WL2805E**
2
Sep. 2019 – Rev2.8
WL2805
Absolute Maximum Ratings
Parameter
Power Dissipation
Value
Unit
300
mW
VIN Range
-0.3~6.0
V
VEN Range
-0.3~VIN
V
VOUT Range
-0.3~VIN
V
260
o
-65 ~ 150
o
150
o
Lead Temperature
Storage Temperature
Operating Junction Temperature
C
C
C
Operating Range
Parameter
Value
Thermal Resistance, RθJA
Unit
250
Input Voltage
Operating Temperature Range
C/W
o
2.3 ~ 5.5
V
-40~85
oC
Electronics Characteristics (VIN = VOUT +1V, CIN=COUT=1uF, TA=25°C, unless otherwise noted)
Parameter
Output Voltage
Symbol
VOUT
Output Current
IOUT
Output short current limiter
ILIM
Condition
VIN = VOUT +1V , IOUT=1mA
1.300
1.330
1.470
1.500
1.530
1.764
1.800
1.836
2.450
2.500
2.550
2.744
2.800
2.856
2.940
3.000
3.060
3.234
3.300
3.366
IOUT =30mA, VOUT=3.0V
30
100
IOUT =100mA, VOUT=3.0V
100
200
△VLOAD
IOUT = 1~ 100mA
EN logic high voltage
VENH
VIN=5.5V, IOUT=1mA
EN logic low voltage
VENL
VIN=5.5V, IOUT=0mA
Will Semiconductor Ltd.
1.270
150
Load Regulation
PSRR
1.230
VOUT=GND
VIN=VOUT+1V~6V, IOUT=40mA
Power Supply Ripple Rejection
1.200
100
△VLINE
ISHDN
1.170
VOUT ≤ 2V
Line Regulation
Shut-down Current
Max.
250
VDROP
IQ
Typ.
VOUT > 2V
Dropout Voltage
Quiescent Current
Min.
VIN = VOUT +1V, IOUT=0A
Unit
V
mA
mA
0.1
25
mV
%/V
mV
V
1.2
3
VEN=0V
0.4
V
5
uA
1.0
uA
Vp-p=1V, F=100Hz, IOUT=10mA
-50
dB
Vp-p=1V, F=1KHz, IOUT=10mA
-30
dB
3
Sep. 2019 – Rev2.8
WL2805
Typical Characteristics (TA=25oC, unless otherwise noted)
15
15
VOUT=3.3V
12
Quiescent Current (uA)
Quiescent Current (uA)
VOUT=3.0V
9
6
3
0
0
1
2
3
4
5
12
9
6
3
0
6
0
Input Voltage (V)
4
5
6
5
VOUT=3.0V
VOUT=3.3V
4
Output Voltage (V)
4
Output Voltage (V)
3
Quiescent Current vs. Input Voltage
5
3
2
1
3
2
1
IOUT=100mA
0
1
2
3
4
Input Voltage (V)
5
0
6
IOUT=100mA
0
Output Voltage vs. Input Voltage
2
3
4
Input Voltage (V)
5
6
300
VOUT=3.0V
Dropout Voltage (V)
250
200
150
100
50
0
1
Output Voltage vs. Input Voltage
300
Dropout Voltage (V)
2
Input Voltage (V)
Quiescent Current vs. Input Voltage
0
1
VOUT=3.3V
250
200
150
100
50
0
50
100
150
200
Output Current (mA)
250
0
300
Dropout Voltage vs. Output Current
Will Semiconductor Ltd.
0
50
100
150
200
Output Current (mA)
250
300
Dropout Voltage vs. Output Current
4
Sep. 2019 – Rev2.8
3.5
3.5
3.0
3.0
O
2.5
85 C
2.0
Output Voltage (V)
Output Voltage (V)
WL2805
O
25 C
1.5
O
-40 C
1.0
0.5
0.0
100
200
300
400
500
600
2.5
O
25 C
2.0
O
-40 C
1.5
1.0
VOUT=3.3V
0.5
VOUT=3.0V
0
O
85 C
0.0
700
0
100
Output Current (mA)
IO=1mA
Output Voltage (V)
Output Voltage (V)
3.32
VOUT=3.0V
2.99
2.98
IO=100mA
2.97
IO=40mA
2.96
600
700
VOUT=3.3V
IO=1mA
3.31
3.30
3.29
IO=100mA
3.28
IO=40mA
3.27
3.26
-25
0
25
50
75
100
3.25
-50
125
-25
0
25
50
75
100
125
o
o
Temperature ( C)
Temperature ( C)
Output Voltage vs. Temperature
Output Voltage vs. Temperature
80
80
60
50
40
30
60
50
40
30
20
20
10
10
100
1000
0
10
10000
100
1000
10000
Frequency (Hz)
Frequency (Hz)
PSRR vs. Frequency
Will Semiconductor Ltd.
VIN
=4.3V
VIN-Ripple =1Vp-p
VOUT =3.3V
IOUT
=1mA
70
PSRR (dB)
VIN
=4.0V
VIN_Ripple =1Vp-p
VOUT
=3.0V
IOUT
=1mA
70
PSRR (dB)
500
3.33
3.00
0
10
400
Output Short Protection
3.02
2.95
-50
300
Output Current (mA)
Output Short Protection
3.01
200
PSRR vs. Frequency
5
Sep. 2019 – Rev2.8
WL2805
80
80
PSRR (dB)
60
50
40
30
70
50
40
30
20
20
10
10
0
10
100
1000
VIN
=4.3V
VIN_Ripple =1Vp-p
VOUT
=3.3V
IOUT
=10mA
60
PSRR (dB)
VIN
=4.0V
VIN_Ripple =1Vp-p
VOUT
=3.0V
IOUT
=10mA
70
0
10
10000
Frequency (Hz)
100
1000
Frequency (Hz)
PSRR vs. Frequency
PSRR vs. Frequency
Power Up
Power Down
Line Regulation
Load Regulation
Will Semiconductor Ltd.
10000
6
Sep. 2019 – Rev2.8
WL2805
Package outline dimensions
SOT-23-3L
Symbol
Dimensions In Millimeters
Min.
Max.
A
1.050
1.250
A1
0.000
0.100
A2
1.050
1.150
b
0.300
0.500
c
0.100
0.200
D
2.820
3.020
E
1.500
1.700
E1
2.650
2.950
e
0.950(Basic)
e1
1.800
2.000
L
0.300
0.600
θ
0
8o
Will Semiconductor Ltd.
o
7
Sep. 2019 – Rev2.8
WL2805
Package outline dimensions
SOT-23-5L
Symbol
Dimensions In Millimeters
Min.
Max.
A
1.050
1.250
A1
0.000
0.100
A2
1.050
1.150
b
0.300
0.500
c
0.100
0.200
D
2.820
3.020
E
1.500
1.700
E1
2.650
2.950
e
0.950(Basic)
e1
1.800
2.000
L
0.300
0.600
θ
0
8o
Will Semiconductor Ltd.
o
8
Sep. 2019 – Rev2.8
WL2805
Order Information
Vout
Ordering No.
(V)
Package
Operating
Temperature
Marking
Shipping
WL2805N12-3/TR
1.2
SOT-23-3L
-40~+85°C
FBC*
3000 Tape & Reel
WL2805N15-3/TR
1.5
SOT-23-3L
-40~+85°C
F15*
3000 Tape & Reel
WL2805N18-3/TR
1.8
SOT-23-3L
-40~+85°C
F18*
3000 Tape & Reel
WL2805N20-3/TR
2.0
SOT-23-3L
-40~+85°C
F20*
3000 Tape & Reel
WL2805N25-3/TR
2.5
SOT-23-3L
-40~+85°C
FCF*
3000 Tape & Reel
WL2805N28-3/TR
2.8
SOT-23-3L
-40~+85°C
FCJ*
3000 Tape & Reel
WL2805N30-3/TR
3.0
SOT-23-3L
-40~+85°C
F30*
3000 Tape & Reel
WL2805N33-3/TR
3.3
SOT-23-3L
-40~+85°C
F33*
3000 Tape & Reel
WL2805E12-5/TR
1.2
SOT-23-5L
-40~+85°C
WL2805E15-5/TR
1.5
SOT-23-5L
-40~+85°C
WL2805E18-5/TR
1.8
SOT-23-5L
-40~+85°C
WL2805E25-5/TR
2.5
SOT-23-5L
-40~+85°C
WL2805E28-5/TR
2.8
SOT-23-5L
-40~+85°C
WL2805E30-5/TR
3.0
SOT-23-5L
-40~+85°C
WL2805E33-5/TR
3.3
SOT-23-5L
-40~+85°C
WFBC
YYWW
WF15
YYWW
WF18
YYWW
WFCF
YYWW
WFCJ
YYWW
WF30
YYWW
WF33
YYWW
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
3000 Tape & Reel
Marking:
F15
= Device code
*
= Month code (A~Z)
WF15
= Device code
YY
= Year
WW
= Week
Will Semiconductor Ltd.
9
Sep. 2019 – Rev2.8
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