lt3466efe-trpbf Linear Technology Corporation, lt3466efe-trpbf Datasheet - Page 15

• Manufacturer Part Number: lt3466efe-trpbf
• Description: White Led Driver And Boost Converter In 3mm X 3mm Dfn Package
• Manufacturer: Linear Technology Corporation

6 LEDs
TYPICAL APPLICATIO S
4 LEDs
Li-Ion Powered Driver for 6 White LEDs and OLED Display
Li-Ion Powered 4 White LEDs Driver and 12V Boost Converter
C
C
C
L1, L2: MURATA LQH32CN150K53
IN
OUT1
OUT2
C
C
L1, L2: 33µH TOKO D52LC
: TAIYO YUDEN JMK107BJ105
IN
OUT1
: TAIYO YUDEN EMK212BJ474
: TAIYO YUDEN EMK212BJ105
R
10Ω
: TAIYO YUDEN JMK107BJ105
FB1
, C
R
10Ω
C
FB1
OUT2
OUT1
0.47µF
1µF
C
OUT1
: TAIYO YUDEN GMK316BJ105
AND DIMMING
OFF
SHUTDOWN
CONTROL 1
15µH
ON
V
FB1
CTRL1
SW1
OUT1
L1
V
FB1
CTRL1
SW1
OUT1
33µH
63.4k
L1
LT3466-1
3V TO 5V
3V TO 5V
LT3466-1
V
R
IN
R
T
V
T
38.3k
1%
IN
GND
CTRL2
V
1µF
SW2
C
OUT2
IN
33µH
FB2
U
L2
L2
15µH
OFF
SHUTDOWN
AND DIMMING
CONTROL 2
CTRL2
V
SW2
OUT2
FB2
ON
1µF
C
1µF
OUT2
909k
R1
C
1µF
OUT2
R2
64.9k
34661 TA01a
12V
30mA AT V
60mA AT V
34661 TA02a
R1
475k
R2
24.9k
16V
30mA
IN
IN
= 3V
= 5V
90
85
80
75
70
65
60
55
50
90
85
65
60
80
75
70
0
0
4 LEDs/20mA
V
V
6 LEDs
V
LED DRIVER
OUT2
IN
OUT2
= 3.6V
Efficiency vs Load Current
10
5
= 16V
= 12V
Conversion Efficiency
OUTPUT CURRENT (mA)
V
LOAD CURRENT (mA)
IN
10
20
BOOST CONVERTER
= 3V
15
30
V
IN
20
40
= 5V
25
34661 TA02b
50
34661 TA01b
LT3466-1
30
60
15
34661f