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LT3466 データシート(PDF) 2 Page - Linear Technology

部品番号 LT3466
部品情報  Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes
PDF  20 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LT3466 データシート(HTML) 2 Page - Linear Technology

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LT3466
3466fa
Input Voltage (VIN) ................................................... 24V
SW1, SW2 Voltages ................................................ 44V
VOUT1, VOUT2 Voltages ............................................. 44V
CTRL1, CTRL2 Voltages ........................................... 24V
FB1, FB2, RT Voltages ................................................ 2V
Operating Temperature Range (Note 2) ... –40
°C to 85°C
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
TJMAX = 125°C, θJA = 43°C/W, θJC = 2.96°C/W
EXPOSED PAD (PIN 11) IS GND
MUST BE SOLDERED TO PCB
ORDER PART
NUMBER
DD PART MARKING
LBBH
LT3466EDD
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
11
DD PACKAGE
10-LEAD (3mm
× 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1
FB1
CTRL1
RT
CTRL2
FB2
VOUT1
SW1
VIN
SW2
VOUT2
(Note 1)
Maximum Junction Temperature ......................... 125
°C
Storage Temperature Range
DFN .................................................. –65
°C to 125°C
TSSOP .............................................. –65
°C to 150°C
Lead Temperature (Soldering, 10 sec, TSSOP) ..... 300
°C
ORDER PART
NUMBER
FE PART MARKING
3466EFE
LT3466EFE
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
GND
NC
VOUT1
SW1
VIN
SW2
VOUT2
GND
GND
FB1
CTRL1
NC
RT
CTRL2
FB2
GND
17
TJMAX = 125°C, θJA = 38°C/W, θJC(PAD) = 10°C/W
EXPOSED PAD (PIN 17) IS GND
MUST BE SOLDERED TO PCB
ELECTRICAL CHARACTERISTICS The ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VIN = 3V, VCTRL1 = 3V, VCTRL2 = 3V, unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Operating Voltage
2.7
V
Maximum Operating Voltage
24
V
FB1 Voltage
●
192
200
208
mV
FB2 Voltage
●
192
200
208
mV
Offset Voltage (VOS) Between FB1 and FB2 Voltages
VOS = |FB1 – FB2|
0
1.5
7.5
mV
FB1 Pin Bias Current
VFB1 = 0.2V (Note 3)
10
50
nA
FB2 Pin Bias Current
VFB2 = 0.2V (Note 3)
10
50
nA
Quiescent Current
VFB1 = VFB2 = 0.3V
5
7.5
mA
CTRL1 = CTRL2 = 0V
16
25
µA
Switching Frequency
RT = 48.7k
0.8
1
1.2
MHz
Oscillator Frequency Range
(Note 4)
200
2000
kHz
Nominal RT Pin Voltage
RT = 48.7k
0.54
V
Maximum Duty Cycle
RT = 48.7k
●
90
96
%
RT = 20.5k
92
%
RT = 267k
99
%



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