YB1521 Datasheet, PDF (4/9 Pages) YOBON TECHNOLOGIES,INC. – High Power Step-Up DC-DC Converter & WLED Driver

YB1521
High Power Step-Up DC-DC Converter & WLED Driver
Electrical Characteristics
Table4 (V_IN=5V, V_EN=5V, T_A=25°C, unless otherwise noted.)
Parameters
Symbol Test Conditions
MIN
Input Voltage Range
Quiescent Current
Shutdown Current
Feedback Voltage
FB Input Bias Current
Switch On-Resistance
Maximum Duty Cycle
Switching Frequency
EN Threshold
V_IN
I_Q
I_SD
V_FB
R_DSON
DTMX
F_SW
V_ENH
2.5
V_FB=0.3V
V_EN=0V, I_OUT = 0mA
I_OUT = 260mA, V_OUT =
10.5V
180
V_FB = 0.2V
V_FB = 0V
85
1
V_EN Rising, V_IN = 5V
1
EN Threshold
V_ENL
V_EN Rising, V_IN = 2.5V
0.8
EN Dimming Frequency
20
Switch Current Limit
I_ILM
1
Under Voltage Lock Out
UVLO
V_IN Rising
UVLO Hysteresis
Over Voltage Protection
Thermal Shutdown
OVP
16
T_SD
The Hysteresis = 20℃
TYP
5
0.2
0.1
200
0.4
92
1.3
1.5
50
1.6
2.25
100
18
160
MAX Units
5.5
V
0.8 mA
1
µA
220 mV
0.1 µA
Ω
%
1.6 MHz
2
V
V
KHz
A
2.45 V
mV
22
V
℃
YB1521 MRev.1.1
www.yobon.com.tw
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