Datasheet

LT3495/LT3495B/
LT3495-1/LT3495B-1
16
3495b1b1fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
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FAX: [phone]
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www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2008
LT 0209 REV A • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT1930/LT1930A 1A (I
SW
), 1.2MHz/2.2MHz, High Efficiency Step-Up
DC/DC Converters
V
IN
: 2.6V to 16V, V
OUT(MAX)
= 34V, I
Q
= 4.2mA/5.5mA, I
SD
< 1µA,
ThinSOT Package
LT1945 (Dual) Dual Output, Boost/Inverter, 350mA (I
SW
), Constant Off-
Time, High Efficiency Step-Up DC/DC Converter
V
IN
: 1.2V to 15V, V
OUT(MAX)
= ±34V, I
Q
= 40µA, I
SD
< 1µA,
10-Lead MS Package
LT1946/LT1946A 1.5A (I
SW
), 1.2MHz/2.7MHz, High Efficiency Step-Up
DC/DC Converters
V
IN
: 2.45V to 16V, V
OUT(MAX)
= 34V, I
Q
= 3.2mA, I
SD
< 1µA,
8-Lead MS Package
LT3463/LT3463A Dual Output, Boost/Inverter, 250mA (I
SW
), Constant
Off-Time, High Efficiency Step-Up DC/DC Converters with
Integrated Schottkys
V
IN
: 2.3V to 15V, V
OUT(MAX)
= ±40V, I
Q
= 40µA, I
SD
< 1µA,
DFN Package
LT3467/LT3467A 1.1A (I
SW
), 1.3MHz/2.1MHz, High Efficiency Step-Up
DC/DC Converters with Soft-Start
V
IN
: 2.4V to 16V, V
OUT(MAX)
= 40V, I
Q
= 1.2mA, I
SD
< 1µA,
ThinSOT Package
LT3471 Dual Output, Boost/Inverter, 1.3A (I
SW
), High Efficiency
Boost-Inverting DC/DC Converter
V
IN
: 2.4V to 16V, V
OUT(MAX)
= ±40V, I
Q
= 2.5mA, I
SD
< 1µA,
DFN Package
LT3473/LT3473A 1A (I
SW
), 1.2MHz, High Efficiency Step-Up DC/DC
Converters with Integrated Schottky Diode and Output
Disconnect
V
IN
: 2.2V to 16V, V
OUT(MAX)
= 36V, I
Q
= 100µA, I
SD
< 1µA,
DFN Package
LT3494/LT3494A 180mA/350mA (I
SW
), High Efficiency Step-Up DC/DC
Converters with Output Disconnect
V
IN
: 2.1V to 16V, V
OUT(MAX)
= 40V, I
Q
= 65µA, I
SD
< 1µA,
DFN Package
LT3580
2A, 40V, 2.5MHz Boost DC/DC Converter V
IN
: 2.5V to 32V, V
OUT(MAX)
= 40V, I
Q
= 1mA, I
SD
< 1µA,
MS8E 3mm × 3mm DFN-8 Package
Adjustable High Voltage Power Supply Doesn’t Need a Transformer Output vs CTRL
LOAD CURRENT (mA)
EFFICIENCY (%)
POWER LOSS (mW)
3495 TA04c
90
80
50
40
60
70
30
600
500
200
100
300
400
0
0.1 10 1001
V
IN
= 5V
V
OUT
= 120V
LOAD CURRENT (mA)
0
V
OUT
PEAK-TO-PEAK RIPPLE (mV)
700
600
400
500
300
200
100
0
168
3495 TA04d
20124
V
IN
= 5V
V
OUT
= 120V
SW CAP
V
CC
SHDN
CTRL
V
OUT
FB
GND
10.7k
V
OUT
15V TO 120V
10mA (V
IN
= 3.3V)
18mA (V
IN
= 5V)
35mA (V
IN
= 8V)
3495 TA04a
LT3495B
C1
4.7µF
L1
22µH
C2
1µF
D1 D2 D3 D4
C4
1µF
C6
1µF
909k
C5
1µF
C7
1µF
C3
1µF
3.3V TO 8V
INPUT
TURN ON/OFF
V
OUT
DIMMING
C1: 4.7µF, 16V, X5R, 0805
C2-C7: 1µF, 50V, X5R, 0805
D1-D5: DIODE INC. B0540WS-7
L1: COILCRAFT LPS4018-223MLB
D5
DANGER HIGH VOLTAGE! OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY
CTRL VOLTAGE (V)
0
V
OUT
VOLTAGE (V)
150
120
60
90
30
0
1.20.6 1.8
3495 TA04b
2.10.90.3 1.5
Output Voltage Ripple vs Load CurrentEfficiency vs Load Current