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LTC3530 数据表(PDF) 14 Page - Linear Technology

部件名 LTC3530
功能描述  Wide Input Voltage Synchronous Buck-Boost DC/DC Converter
PDF  16 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3530 数据表(HTML) 14 Page - Linear Technology

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



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