W-6238 Datasheet, PDF (5/14 Pages) Copal Electronics – High Efficiency 10 LED Boost Converter

W-6238
TYPICAL CHARACTERISTICS
V_IN = 3.6V, C_IN = 4.7µF, C_OUT = 0.22µF, L = 47µH with 10 LEDs at 20mA, T_AMB = 25ºC, unless otherwise specified.
Quiescent Current vs. VIN (Not Switching)
Quiescent Current vs. VIN (Switching)
150
2.0
VFB = 0.4V
125
1.5
100
1.0
75
0.5
50
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
FB pin voltage vs. Temperature
303
302
301
300
299
298
297
-50
0
50 100 150
TEMPERATURE [ºC]
Switching Frequency vs. Supply Voltage
1.2
0.0
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
FB Pin Voltage vs. Output Current
310
305
300
295
10 LEDs
290
5 10 15 20 25 30
OUTPUT CURRENT [mA]
Switching Waveforms
1.1
1.0
0.9
0.8
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
© NIDEC COPAL ELECTRONICS CORP.
5
Characteristics subject to change without notice
Doc. No. MD-5019 Rev. D