WL2817DA11-8/TR [WILLSEMI]
Ultra low dropout, 500mA/1A, CMOS LDO;型号: | WL2817DA11-8/TR |
厂家: | WILLSEMI |
描述: | Ultra low dropout, 500mA/1A, CMOS LDO 输出元件 调节器 |
文件: | 总15页 (文件大小:2916K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
WL2817DA
WL2817DA
Http://www.sh-willsemi.com
Ultra low dropout, 500mA/1A, CMOS LDO
Descriptions
The WL2817DA series are ultra low dropout, Low
quiescent current, high PSRR CMOS LDO.
Using CMOS construction, the quiescent current
consumed by the WL2817DA is typically 160uA over
the entire input voltage range, making it attractive for
consumer, networking applications that demand high
output current. The WL2817DA series are available in
wide output voltage range version from 1.0V to 3.3V.
DFN1612-8L
The WL2817DA series offer thermal shutdown (OTP)
and current limit functions, to assure the stability of
chip and power system at wrong condition, and it uses
trimming technique to guarantee output voltage
accuracy within ±2%.
The WL2817DA series can choose the output current
limit between 1.0A or 500mA by alternating the LCON
pin between “H” or “L”.The WL2817DA regulators are
available in DFN1612-8L packages. Standard products
are Pb-free and Halogen-free.
Pin Configuration (Top View)
Features
Input voltage
: 2.5V~5.5V
Output voltage range :1.0V 1.1V 1.2V 1.5V 1.8V
2.7V 2.8V 2.9V 3V 3.3V
Output current
PSRR
: 500mA/1A
: 60dB(@ VOUT=3V)
B
*
= Device code (3.0V)
Dropout voltage : 70mV @ IOUT=0.5A
Output noise : 50μVRMS
Quiescent current : 160μA Typ.
= Month code (N: 2015.01,
O:2015.02, and so on)
Marking
Applications
LCD TV
Order Information
For detail information, Please refer to page 15.
STB
Computer, Graphic card
Network communication equipments
Others portable electronics devices
Will Semiconductor Ltd.
1
Apr. 2019 – Rev1.8
WL2817DA
Typical Application
Pin Description
Symbol Description
PIN
1
VOUT
VOUT
Output
Output
2
Output Current Limit Alternate
3
LCON
Pin(“H”=1A,“L”=500mA)
4
5
6
7
8
outsense Feedback Pin
GND
CE
Ground
Min.
Typ.
4.7uF
1uF
Max.
Enable, Active High
Input
CIN
VIN
COUT
VIN
Input
Block Diagram
Will Semiconductor Ltd.
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Apr. 2019 – Rev1.8
WL2817DA
Absolute Maximum Ratings
Parameter
Symbol
VIN
Value
Unit
Input voltage range
EN voltage range
-0.3~6.5
V
V
VEN
-0.3~VIN
-0.3~VIN
-0.3~VIN
625
LCON voltage range
Output voltage range
Power dissipation *1
Thermal resistance
Junction temperature
Lead temperature(10s)
Storage temperature
VLCON
VOUT
PD
V
V
mW
oC/W
oC
oC
oC
V
RθJA
TJ
165
150
TL
260
Tstg
HBM
MM
-55 ~ 150
2000
ESD Ratings
200
V
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum
Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions
beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may
affect device reliability.
*1: Power dissipation is calculate by PD = (VIN-VOUT) x IOUT
Recommend Operating Ratings
Parameter
Symbol
VIN
Value
Unit
V
oC
Operating Supply voltage
Operating Temperature Range
2.5~5.5
-40~85
Topr
Will Semiconductor Ltd.
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Apr. 2019 – Rev1.8
WL2817DA
Electronics Characteristics (Ta=25oC, VIN=VOUT+1V, CIN=4.7uF, COUT=1uF,IOUT=1mA,
LCON=EN=VIN,unless otherwise noted)
Parameter
Symb
ol
Condition
Min.
Typ.
Max.
Unit
T=25℃
Voset*0.98 Voset
Voset*1.02
Voset*1.03
V
Output Voltage
Current Limit
VOUT
-40℃≤T≤85℃
Voset*0.97 Voset
LCON=“H”
LCON=“L”
1
A
A
ILIM
VIN=Vset+0.5V
0.5
VOUT=VOUT*0.9
7
Dropout Voltage
VDROP
70
3.5
1.5
mV
mV
mV
IOUT=0.5A
LCON=“H”:
1mA≤IOUT≤1A
LCON=“L”:
1mA≤IOUT≤0.5A
Load Regulation
△VLoad
VIN=Vset+0.5V
UVLO
2
5
V
mV
uA
Vuvlo
Line Regulation
Quiescent Current
Shut-down Current
VOUT Temperature
Coefficient
△VLINE Vset+0.5V≤VIN≤5.5V(VIN≥UVLO)
10
220
3
IOUT=0
IQ
160
1
ISHDN
ΔVOUT
ΔT
VEN = 0V
uA
/
ppm/
℃
-40℃≤T≤85℃
100
LCON=“H”
LCON=“L”
LCON=“H”
LCON=“L”
160
80
mA
mA
mA
mA
Short Current Limit
Inrush Current Limit
Reverse Current
Isc
VOUT=0V
CC mode
500
250
*1
Irush
VOUT=Voset+1V;EN=0;
*2
Irev
4.5
10
uA
0≤VIN≤Vrev_del
Detector offset
voltage in reverse
current protection
mode
*3
Vrev_det
VOUT=Voset+1V;EN=0
VOUT=Voset+1V;EN=0
0.5
V
Release offset
voltage in reverse
current protection
mode
*4
Vrev_rel
0.35
V
*5
Max reverse Current
Discharge resistance
Power Supply Ripple
Rejection
Irevmax
Rdis
VOUT=Voset+1V;EN=0
EN=0
70
60
uA
Ω
VIN=(VOUT+1V)DC+0.2VP-P
F=1KHz ,IOUT=10mA
PSRR
eNO
60
dB
40
Output noise voltage
(VOUT=3V)
BW=10Hz to 100KHz IOUT=0
BW=10Hz to 100KHz IOUT=10mA
BW=10Hz to 100KHz IOUT=0
BW=10Hz to 100KHz IOUT=10mA
VIN=5.5V, IOUT=1mA
μVRMS
60
20
Output noise voltage
(VOUT=1.0V)
EN logic high voltage
eNO
μVRMS
V
35
VENH
1.2
Will Semiconductor Ltd.
4
Apr. 2019 – Rev1.8
WL2817DA
EN logic low voltage
EN pull-down current
LCON pull-down current
EN logic high voltage
EN logic low voltage
LCON logic high
voltage
VENL
Ien
VIN=5.5V, IOUT=0mA
0.4
V
uA
uA
V
0.2
0.2
1
1
ILCON
VENH
VENL
1.2
1.2
0.4
V
VENH
V
V
LCON logic low
voltage
VENL
0.4
Thermal shutdown
threshold
oC
oC
TSD
165
30
Thermal shutdown
hysteresis
△ TSD
*1: For CC (Constant Current) mode, please refer to Start-up Characteristics.
*2 *3 *4 *5: Please refer to reverse current protection mode
Start-up Characteristics
Constant slope circuit is included in the WL2817DA to prevent the overshoot of the output voltage. If inrush current
increases due to the large capacitance of COUT, the operation mode will be shift from Constant Slope (CS) mode to
Constant Current (CC) mode. The CC mode maintains a constant inrush current. In the CC mode, ton varies with the size
of COUT and the load current.
Reverse Current Protection Circuit
The WL2817DA include a Reverse Current Protection Circuit, which stop the reverse current from VOUT pin to VIN pin
or GND pin when VOUT becomes higher than VIN.
Following figure shows the load characteristics of each mode. When giving the VOUT pin a constant voltage and
decreasing the VIN voltage,the VIN voltage will become lower than VOUT-Vrev_det, the reverse current protection starts to
function to stop the load current. By increasing the VIN voltage higher than VOUT-Vrev_rel, the protection mode will be
released to let the load current to flow. When VIN voltage is between VOUT and Vrev_det, the parasitic diode between VIN pin
and VOUT pin becomes forward direction. As a result, the current flows from VOUT pin to VIN pin, and the maximum of the
current is Irevmax
.
Figure1.Detection/Release Threshold value of Reverse Current Protection
Will Semiconductor Ltd.
5
Apr. 2019 – Rev1.8
WL2817DA
Typical characteristics (Ta=25oC, VIN=4V, VOUT=3V,CIN=4.7uF,COUT=1uF, unless otherwise noted)
200
180
160
140
120
IO=1mA
100
-40
-20
0
20
40
60
80
100
120
140
Temperature(oC)
Quiescent current vs. Input voltage
Quiescent current vs. Temperature
3.04
80
75
70
65
60
55
50
3.03
3.02
3.01
3.00
2.99
2.98
2.97
2.96
IO=1mA
IO=500mA
-40
-20
0
20
40
60
80
100
120
140
-40
-20
0
20
40
60
80
100
120
140
Temperature(oC)
Temperature(oC)
Dropout Voltage vs. Temperature
Output Voltage vs. Temperature
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
LCON=1
LCON=0
-40
-20
0
20
40
60
80
100
120
140
Temperature(oC)
Output voltage vs. Input voltage
Current Limit vs. Temperature
Will Semiconductor Ltd.
6
Apr. 2019 – Rev1.8
WL2817DA
Short Current Limit vs. Temperature
Inrush Current Limit vs. Temperature
Output Voltage vs. Load Current
Output Voltage vs. Load Current
Will Semiconductor Ltd.
7
Apr. 2019 – Rev1.8
WL2817DA
1.Start up
A:Different Load
LCON=0
LCON=1
VIN=4V,IOUT=0mA
VIN=4V,IOUT=100mA
VIN=4V,IOUT=300mA
VIN=4V,IOUT=0mA
VIN=4V,IOUT=100mA
VIN=4V,IOUT=600mA
Will Semiconductor Ltd.
8
Apr. 2019 – Rev1.8
WL2817DA
B:Different Cout
VIN=4V,COUT=1uF
LCON=0
LCON=1
VIN=4V,COUT=1uF
VIN=4V,COUT=4.7uF
VIN=4V,COUT=10uF
VIN=4V,COUT=4.7uF
VIN=4V,COUT=10uF
Will Semiconductor Ltd.
9
Apr. 2019 – Rev1.8
WL2817DA
VIN=4V,COUT=22uF
VIN=4V,COUT=47uF
VIN=4V,COUT=100uF
VIN=4V,COUT=22uF
VIN=4V,COUT=47uF
VIN=4V,COUT=100uF
2.Shut down
VIN=4V,IOUT=0mA
VIN=4V,IOUT=30mA
Will Semiconductor Ltd.
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Apr. 2019 – Rev1.8
WL2817DA
VIN=4V,IOUT=150mA
3.Load Step
VIN=4V,IOUT=50mA-100mA
VIN=4V,IOUT=1mA-250mA
VIN=4V,IOUT=1mA-500mA
VIN=4V,IOUT=1mA-1A
Will Semiconductor Ltd.
11
Apr. 2019 – Rev1.8
WL2817DA
4.LCON Line Step
VIN=4V,IOUT=0mA
VIN=4V,IOUT=150mA
VIN=4V,IOUT=500mA
Will Semiconductor Ltd.
12
Apr. 2019 – Rev1.8
WL2817DA
PACKAGE OUTLINE DIMENSIONS
DFN1612-8L
D
e
b
PIN 1
D2
TOP VIEW
BOTTOM VIEW
SIDE VIEW
Dimensions in Millimeters
Symbol
Min.
0.50
-
Typ.
0.55
Max.
0.60
0.05
A
A1
A3
D
-
0.15 Ref.
1.60
1.55
1.15
1.25
0.25
0.13
1.65
1.25
1.35
0.35
0.23
E
1.20
D2
E2
b
1.30
0.30
0.18
e
0.40 BSC
0.20
L
0.15
0.25
Recommend PCB Layout (Unit: mm)
Notes:
This recommended land pattern is for reference
purposes only. Please consult your manufacturing
group to ensure your PCB design guidelines are met.
Will Semiconductor Ltd.
13
Apr. 2019 – Rev1.8
WL2817DA
TAPE AND REEL INFORMATION
Reel Dimensions
Tape Dimensions
P1
Quadrant Assignments For PIN1 Orientation In Tape
Q1
Q3
Q2
Q4
Q1
Q3
Q2
Q4
User Direction of Feed
RD
W
Reel Dimension
7inch
13inch
12mm
4mm
Q2
Overall width of the carrier tape
8mm
2mm
Q1
16mm
8mm
Q3
P1
Pitch between successive cavity centers
Q4
Pin1 Pin1 Quadrant
Will Semiconductor Ltd.
14
Apr. 2019 – Rev1.8
WL2817DA
ORDER INFORMATION
Operating
Ordering No.
VOUT (V)
1.0
Package
Marking
C*
Shipping
Temperature
3000/Tape and
Reel
WL2817DA10-8/TR
WL2817DA11-8/TR
WL2817DA12-8/TR
WL2817DA15-8/TR
WL2817DA18-8/TR
WL2817DA27-8/TR
WL2817DA28-8/TR
WL2817DA29-8/TR
WL2817DA30-8/TR
WL2817DA33-8/TR
DFN1612-8L
DFN1612-8L
DFN1612-8L
DFN1612-8L
DFN1612-8L
DFN1612-8L
DFN1612-8L
DFN1612-8L
DFN1612-8L
DFN1612-8L
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
-40 ~ +85°C
3000/Tape and
Reel
1.1
J*
3000/Tape and
Reel
1.2
K*
3000/Tape and
Reel
1.5
L*
3000/Tape and
Reel
1.8
D*
3000/Tape and
Reel
2.7
M*
E*
3000/Tape and
Reel
2.8
3000/Tape and
Reel
2.9
N*
3000/Tape and
Reel
3.0
B*
3000/Tape and
Reel
3.3
I*
Will Semiconductor Ltd.
15
Apr. 2019 – Rev1.8
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