YB1315 Datasheet, PDF (3/10 Pages) YOBON TECHNOLOGIES,INC. – High Efficiency Charge Pump White LED Driver

Preliminary YB1315
High Efficiency Charge Pump White LED Driver
Absolute Maximum Ratings
Recommended Operating Conditions
Supply Voltage.......................................5.5V
Output Short-Circuit Duration...... Continuous
Junction Temperature Range...............150℃
Storage Temperature Range.. -65℃ to 150℃
Lead Temperature................................250℃
Input Supply Voltage............... 2.7V to 5.5V
Operating Temperature..........-40℃ to 85℃
Electrical Characteristics
Table 3 (V_IN=3.6V, EN1=EN2=V_IN, T_A=25°C, unless otherwise noted.)
Description
Symbol
Test Conditions
SUPPLY VOLTAGE AND CURRENT
Input Voltage Range
V_IN
I_OUT = 0~70mA
Operating Quiescent Current
Shutdown Current
CHARGE PUMP STAGE
V_IN =4.2V, x1-mode,
I_Q
EN1=EN2=1, I_SET =20μA
I_OUT = 0mA, x1.5-mode
I_SD
EN1=EN2=GND
Over Voltage Limit
Startup Time
Softstart Duration
Switching Frequency
V_OUT
LED1 unconnected, V_IN =4.2V
C_OUT =1μF, I_DX ≥0.9I_DX
f
Efficiency
η
V_IN =3.75V, I_LED=20mA each
V_DX =3.2V
Shutdown Temperature
Shutdown Temperature Hysteresis
CURRENT SINKS
Recommended Maximum Current Per
Current Sink
I_DX
3.2V≤V_IN≤5.5V
Current into Each Current Sink when
I_SET is Shorted to GND
I_DX
3.0V≤V_IN≤5.5V
I_SET short to GND
Current Matching Between Any Two
Outputs
V_DX =3.2V, T_A =25℃
Line Regulation
Reference Voltage for Current Set
Recommended I_SET Pin Current Range
I_DX to I_SET Current Ratio
Voltage at Dx to GND
V_ISET
I_SET
k
V_SOURCE
3.2V≤V_IN≤5.5V, V_DX =3.2V
EN1=EN2=1, I_SET =80μA
EN2=0, EN1=1
EN2=1, EN1=0
EN2=1, EN1=1
EN2=1, EN1=1, I_SET =80μA
MIN
2.7
0.7
580
4
220
TYP MAX Units
5.5
V
250
μA
2
mA
0.1
1
μA
5.3
V
750
μs
500
μs
1
1.3 MHz
83
%
160
℃
20
℃
25
mA
60
mA
±3
%
±3
%
200
400
mV
600 620
100 μA
250 280
0.4
V
YB1315 Rev.0.1
www.yobon.com.tw
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