LTC3530EMS View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC3530EMS Datasheet PDF : 16 Pages
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LTC3530
TYPICAL APPLICATIONS
High Efficiency Li-Ion Powered Constant Current Lumiled Driver
L1
3.3μH
VIN
2.2V TO
4.2V
CIN
10μF
OFF ON
SW1
SW2
VIN
VOUT
LTC3530
SD/SS
FB CP1
1nF
VC
RT
RT
44.2k
BURST
GND
R2
100k
R3
95.3k
D1
R4
100k
COUT
4.7μF
CBURST
470pF
R1
301k
ILED = 500mA
LHXL-PW01
R2 = R1/1.5
ILED
=
12,810
(R1+R2+R3+R4)
R1 • R3
D1 = BAT54
CIN = TAIYO YUDEN JMK212BJ106MG
COUT = TAIYO YUDEN JMK325BJ475MM
Lumiled Driver Efficiency vs LED Current
100
VIN = 3.6V
98 1MHz
96
94
92
90
88
86
84
82
80
0.1
LED CURRENT (A)
0.5
3530 TA04b
3530fb
14
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