CAT37_08 Datasheet, PDF (5/13 Pages) Texas Instruments – CMOS White LED Driver Boost Converter

CAT37
TYPICAL CHARACTERISTICS
V_IN = 3.6V, T_AMB = 25ºC , C_IN = 4.7µF, C_OUT = 1µF, L = 6.8µH, unless otherwise specified.
Efficiency vs. Input Voltage
90
85
Efficiency vs. Temperature
86
LOAD = 20 mA
84
80
75
3 _{3LELDESDsata1t} 51m5mAA
VOVUOTUT= _=101V0V
70
65
82
80
78
LOAD = 3 LEDs
76
= _{V3I.N6V= 3.6V}
LOAD = 15 mA
LOAD = 10 mA
60
2
3
4
5
6
INPUT VOLTAGE [V]
74
-50 -25
0
25
50
TEMPERATURE [ºC]
75
100
V_SW, I_L, & V_OUT Waveforms
PWM on S¯¯H¯D¯N¯ pin at 1kHz
Enable Power-Up Waveforms
© Catalyst Semiconductor, Inc.
5
Characteristics subject to change without notice
Doc. No. MD-5005 Rev. T