CAT37 Datasheet, PDF (5/13 Pages) Catalyst Semiconductor – CMOS White LED Driver Boost Converter

CAT37
TYPICAL CHARACTERISTICS
V_IN = 3.6 V,T_AMB = 25˚C, C_IN = 4.7 µF, C_OUT = 1µF, L = 6.8 µH, unless otherwise specified.
Efficiency vs. Input Voltage
90
85
80
75 ³ 3^LEL^DE^SD^as^t a¹t⁵1^m5^AmA
VO_VU_OT_U=_T 1₌0V_10V
70
65
60
2
3
4
5
6
INPUT VOLTAGE [V]
Efficiency vs. Temperature
86
LOAD = 20 mA
LOAD =20 mA
84
82
LO^LA^OD^A=^D15⁼m¹⁵A ^mA
80
LO^LA^OD^A=^D1⁼0 m¹⁰A ^mA
78
76
L=O_LV3OA_I.6ND_AV=D=3_3=.L₆₃E_VD_Ls_EV_DI_sN
74
-50 -25 0
25 50 75 100
TEMPERATURE [ºC]
V , I , & V Waveforms
SW L
OUT
PWM on SHDN pin at 1kHz
Enable Power-Up Waveforms
5
Doc No. 5005, Rev. R