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LT3466-1
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
Input Voltage (V IN ) ................................................... 24V
TOP VIEW
ORDER PART
SW1, SW2 Voltages ................................................ 44V
V OUT1 , V OUT2 Voltages ............................................. 44V
CTRL1, CTRL2 Voltages ........................................... 24V
V OUT1
SW1
V IN
1
2
3
11
10 FB1
9 CTRL1
8 R T
NUMBER
LT3466EDD-1
FB1, FB2 Voltages ...................................................... 2V
Operating Temperature Range (Note 2) ... –40 ° C to 85 ° C
Storage Temperature Range .................. –65 ° C to 125 ° C
Junction Temperature .......................................... 125 ° C
SW2 4 7 CTRL2
V OUT2 5 6 FB2
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
T JMAX = 125 ° C, θ JA = 43 ° C/W, θ JC = 3 ° C/W
DD PART MARKING
LBRX
EXPOSED PAD (PIN 11) IS GND
MUST BE SOLDERED TO PCB
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T A = 25 ° C. V IN = 3V, V CTRL1 = 3V, V CTRL2 = 3V, unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Operating Voltage
Maximum Operating Voltage
2.7
22
V
V
FB1 Voltage
FB2 Voltage
FB1 Pin Bias Current
FB2 Pin Bias Current
Quiescent Current
Switching Frequency
Oscillator Frequency Range
Nominal R T Pin Voltage
V FB1 = 0.2V (Note 3)
V FB2 = 0.8V (Note 3)
V FB1 = V FB2 = 1V
CTRL1 = CTRL2 = 0V
R T = 48.7k
(Note 4)
R T = 48.7k
●
●
192
788
0.75
200
200
800
10
10
5
16
1
0.54
208
812
50
50
7.5
25
1.25
2000
mV
mV
nA
nA
mA
μ A
MHz
kHz
V
Maximum Duty Cycle
R T = 48.7k
●
90
96
%
R T = 20.5k
R T = 267k
92
99
%
%
Converter 1 Current Limit
Converter 2 Current Limit
Converter 1 V CESAT
Converter 2 V CESAT
I SW1 = 300mA
I SW2 = 300mA
●
●
310
310
400
400
320
320
mA
mA
mV
mV
Switch 1 Leakage Current
Switch 2 Leakage Current
CTRL1 Voltage for Full LED Current
CTRL2 Voltage for Full Feedback Voltage
V SW1 = 10V
V SW2 = 10V
●
●
1.8
1
0.01
0.01
5
5
μ A
μ A
V
V
CTRL1 or CTRL2 Voltage to Turn On the IC
CTRL1 and CTRL2 Voltages to Shut Down Chip
150
70
mV
mV
CTRL1 Pin Bias Current
CTRL2 Pin Bias Current
V CTRL1 = 1V
V CTRL2 = 1V (Note 3)
●
●
6
9
10
12.5
120
μ A
nA
34661f
2
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