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YB1508P View Datasheet(PDF) - YOBON TECHNOLOGIES,INC.

Part NameDescriptionManufacturer
YB1508P Step-up DC-DC Converter , White LED Driver YOBON
YOBON TECHNOLOGIES,INC. YOBON
YB1508P Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
YB1508
Step-up DC-DC Converter , White LED Driver
Absolute Maximum Ratings
SW voltage
40V
All other pins
10V
Maximum Junction Temp,Tj
Lead Temperature (Soldering 10
sec)
Thermal Resistance
150 °C
300 °C
195 °C
Electricity Characteristics
Table 3(TA=25°C, Vin=3.3V Cin=1uF Cout=4.7uF unless otherwise noted)
Function Parameter
Conditions
Min
Typ
Input Voltage Range
Feedback Voltage
FB Pin Bias current
Supply current
2.7
Iout =20mA, Vout = 12.5V
Circuit of figure 1. (L=22uH
Cout =4.7uF)
180
200
Rfb = 10 ohms
2
10
Vfb = 0.3V
3.5
CTRL = 0V
1
Switching Frequency
0.7
0.8
Maximum Duty Cycle
Minimum duty cycle
20
25
Switch Vcesat
At Isw = 200mA
200
Switch Current Limit
40% duty cycle
250
Switch Leakage Current
Ctrl = 0.3V
1
VCTRL for Full LED current
1.6
1.7
CTRL Pin Bias Current
Ctrl = 2V
20
Chip turn off delay
YB1508
36
Over Voltage Protection
YB1508P
21
Max Units
9
V
220
mV
20
μA
mA
μA
1.3
MHz
93
%
35
%
mV
mA
μA
1.8
V
μA
30
μS
V
YB1508 MRev1.4
WWW.YOBON.COM.TW
3
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