DataSheet.es WD3138 Hoja de datos PDF


PDF WD3138 Datasheet ( Hoja de datos )

Número de pieza WD3138
Descripción White LED Driver
Fabricantes WillSEMI 
Logotipo WillSEMI Logotipo
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Total 23 Páginas
		
WD3138 datasheet

1 Page

WD3138 pdf
WD3138
Electronics Characteristics (Ta=25oC, VIN=3.6V, VEN=VIN, CIN=COUT=1μF, unless otherwise noted)
Parameter
Symbol
Supply Current
Operation Voltage Range
VIN
Under Voltage Lockout
VUVLO
UVLO Hysteresis
VUVLO-HYS
Quiescent Current
IQ
Supply Current
IS
Shutdown Current
ISD
Enable and Reference Control
EN Threshold Voltage
EN Pull-down Resistance
EN Shutdown Pulse Width
1-wire Digital Brightness
Detection Time
VENL
VENH
REN
tOFF
t1W_DET
1-wire Digital Brightness
Detection Delay
t1W_DELAY
1-wire Digital Brightness
Detection Window Time
t1W_WIN
Voltage and Current Control
Feedback Reference
VREF
Feedback Input Bias Current
Operation Frequency
Maximum Duty Cycle
PWM Dimming Clock Rate
PWM Dimming Duty Cycle
Power Switch
On Resistance
N-channel Leakage Current
OC and OLP
Current Limit
Open LED Protection
Threshold
1-wire Digital Timing
Start Time of Program Stream
End Time of Program Stream
Start Time of Data-Byte
Stream
High Time Low Bit
IFB
fOSC
DMAX
RON
ILN_NFET
ILIM
ILIM_START
VOLP
tSTART
tEOS
tSOD
tH_LB
Test Conditions
VIN Rising
No Switching
Switching
VEN < 0.4V
EN High to Low
EN Pin Low,
Note 1
100% Full Scale
1% Dimming
Recommended
Recommended
VIN=3.6V
VLX=40V, TA=25ºC
Start-up
LED Open,
Measured on LX
Logic 0
Min
2.7
1.8
1.5
2.5
260
100
1
196
500
92
5
1
0.68
36
2
2
2
2
Typ Max Unit
-- 5.5 V
2.2 2.5 V
0.1 V
0.4 1 mA
1 2 mA
1 μA
0.4 V
V
800 k
ms
μs
μs
ms
200 204 mV
2 mV
2 μA
600 700 kHz
95 %
100 KHz
100 %
0.6
1 μA
0.8
0.4
38 40
A
A
V
μs
360 μs
360 μs
180 μs
Will Semiconductor Ltd.
5 Jun, 2015 - Rev. 1.0

5 Page

WD3138 arduino
WD3138
Start-Up from EN
Shut-Down from EN
Start-Up from VIN
Shut-Down from VIN
Start-Up with LED Open
PWM Dimming Waveforms
Will Semiconductor Ltd.
10 Jun, 2015 - Rev. 1.0

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