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参数资料
| 型号： | YB1518ST25 |
| 厂商： | YOBON TECHNOLOGIES, INC. |
| 元件分类： | DC/DC变换器 |
| 英文描述： | Step-up DC-DC Converter White LED Driver |
| 中文描述： | 升压DC - DC转换器白光LED驱动器 |
| 文件页数： | 6/12页 |
| 文件大小： | 1582K |
| 代理商： | YB1518ST25 |
YB1518
Step-up DC-DC Converter White LED Driver
YB1518 MRev.1.2
www.yobon.com.tw
3
Absolute Maximum Ratings
VIN .........................................................................20V
SW Voltage ............................................................36V
FB Voltage ...............................................................5V
CTRL Voltage...........................................................5V
Maximum Junction Temp,TJ .............................150°C
Lead Temperature (Slokering 10 sec) ................300°C
Thermal Resistance............................................195°C
Electricity Characteristics
Recommended Operating Conditions
Operating Temperature ............................-40°C~85°C
Supply Voltage............................................ 2.7 V~16V
SW Voltage ............................................................32V
Symbol
Function Parameter
Test Conditions
Min
Typ
Max
Units
Vin
Input Voltage Range
2.7
16
V
Not Switching
VFB = 0.3V
1.2
1.5
1.7
mA
IQ (Quiescent
Current)
Shutdown
CTRL = 0V
0.3
1
uA
VFB
Feedback Voltage
Iout=20mA,Vout=12.5V
Circuit of Figure 1
90
100
110
mV
100% duty cycle
400
450
mA
ICL
Switch Current Limit
40% duty cycle
350
mA
IB
FB Pin Bias Current
VFB=100mV
1
uA
FRSW
Switching Frequency
900
930
960
KHz
DTMX
Maximum Duty Cycle
85
%
DTMN
Minimum Duty Cycle
20
25
%
VSAT
Switch Vcesat
At Isw = 200mA
180
mV
ILKG
Switch Leakage
Current
Ctrl = 0.3V
1
μA
Full On
1.7
V
VCTL
VCTRL for Full LED
Current
Full Off
0.3
V
ICTL
CTRL Pin Bias Current
Ctrl = 2V
40
μA
OVP
Over Voltage
Protection
34
V
θJA
Thermal Resistance
220
°C/W
Note:
Absolute maximum ratings are limits beyond which damage to the device may occur.
The maximum allowable power dissipation is a function of maximum function temperature , TJ(max), the
junction to ambient thermal resistance, θJA , and the ambient temperature. The maximum allowable, power
dissipation at any ambient temperature is calculated using: PD(MAX)= [TJ(max)-TA]/θJA . Exceeding the
maximum allowable power dissipation will cause excessive die temperature. All limits at temperature
extremes are guaranteed via correlation using standard statistical methods
(TA=25°C, Vin=3.3V, Cin=1uF Cout=10uF unless otherwise noted) Table 3
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