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LT3495BEDDB#TRMPBF

Description
Conv DC-DC 2.5V to 16V Step Up Single-Out 40V Automotive 10-Pin DFN EP T/R
File Size603KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LT3495BEDDB#TRMPBF Overview

Conv DC-DC 2.5V to 16V Step Up Single-Out 40V Automotive 10-Pin DFN EP T/R

LT3495BEDDB#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeStep Up
IsolationIsolated
Output TypeAdjustable
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)40(Max)
Minimum Input Voltage (V)2.5
Maximum Input Voltage (V)16
Operating Supply Voltage (V)2.5 to 16
Typical Switch Current (A)0.65
Typical Quiescent Current (uA)60
Line Regulation0.03%/V(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count10
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width2
PCB changed10
Lead ShapeNo Lead
LT3495/LT3495B/
LT3495-1/LT3495B-1
650mA/350mA Micropower
Low Noise Boost Converter
with Output Disconnect
FEATURES
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DESCRIPTION
The LT
®
3495/LT3495B/LT3495-1/LT3495B-1 are low noise
boost converters with integrated power switch, feedback
resistor and output disconnect circuitry. The parts control
power delivery by varying both the peak inductor current
and switch off-time. This novel* control scheme results
in low output voltage ripple as well as high efficiency
over a wide load range. For the LT3495/LT3495-1, the
off-time of the switch is not allowed to exceed a fixed
level, guaranteeing the switching frequency stays above
the audio band for the entire load range. The parts feature
a high performance NPN power switch with a 650mA
and 350mA current limit for the LT3495/LT3495B and
LT3495-1/LT3495B-1 respectively. The quiescent current
is a low 60µA, which is further reduced to less than 0.1µA
in shutdown. The internal disconnect circuitry allows the
output voltage to be isolated from the input during shut-
down. An auxiliary reference input (CTRL pin) overrides
the internal 1.235V feedback reference with any lower
value allowing full control of the output voltage during
operation. The LT3495 series are available in a tiny 10-lead
3mm
×
2mm DFN package.
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Low Quiescent Current
60µA in Active Mode
0.1µA in Shutdown Mode
Low Noise Control Scheme (Switching Frequency
Always Stays Above Audible Range for LT3495/-1)
Integrated Power NPN:
650mA Current Limit (LT3495/B)
350mA Current Limit (LT3495-1/B-1)
Integrated Output Disconnect
Integrated Output Dimming
Wide input range: 2.5V to 16V
Wide output range: Up to 40V
Integrated feedback resistor
Tiny 10-Lead 3mm
×
2mm DFN Package
APPLICATIONS
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OLED Power
Low Noise Power
MP3 Player
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. *Patent pending.
TYPICAL APPLICATION
OLED Power Supply from One Li-Ion Cell
V
OUT
PEAK-TO-PEAK RIPPLE (mV)
ONE
Li-Ion
CELL
10µH
4.7µF
SW
V
CC
SHDN
CTRL
CAP
V
OUT
909k
FB
GND
3495 TA01a
Output Voltage Ripple
vs Load Current
50
90
1.0µF 0603
CAPACITOR AT V
OUT
EFFICIENCY (%)
Efficiency vs Load Current
V
IN
= 3.6V
400
LOAD FROM CAP
LOAD FROM V
OUT
320
POWER LOSS (mW)
2.2µF
V
OUT
16V
70mA
1µF
40
80
LT3495
30
70
240
20
60
160
10
2.2µF 1206
CAPACITOR AT V
OUT
10
1
LOAD CURRENT (mA)
100
3495 TA01b
50
80
0
0.1
40
0.1
1
10
LOAD CURRENT (mA)
0
100
3495 TA01c
3495b1b1fa
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