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LT1615IS5#TRMPBF

Description
Conv DC-DC 1.2V to 15V Step Up Single-Out 34V Automotive 5-Pin TSOT-23 T/R
File Size150KB,8 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LT1615IS5#TRMPBF Overview

Conv DC-DC 1.2V to 15V Step Up Single-Out 34V Automotive 5-Pin TSOT-23 T/R

LT1615IS5#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeStep Up
Output TypeAdjustable
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)34(Max)
Minimum Input Voltage (V)1.2
Maximum Input Voltage (V)15
Operating Supply Voltage (V)1.2 to 15
Typical Switch Current (A)0.35
Typical Quiescent Current (uA)20
Line Regulation0.1%/V
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTape and Reel
Pin Count5
Standard Package NameSOT
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed5
Lead ShapeGull-wing
LT1615/LT1615-1
Micropower Step-Up
DC/DC Converters
in ThinSOT
FEATURES
s
DESCRIPTIO
s
s
s
s
s
Low Quiescent Current:
20
µ
A in Active Mode
<1
µ
A in Shutdown Mode
Operates with V
IN
as Low as 1V
Low V
CESAT
Switch: 250mV at 300mA
Uses Small Surface Mount Components
High Output Voltage: Up to 34V
Low Profile (1mm) ThinSOT
TM
Package
APPLICATIO S
s
s
s
s
LCD Bias
Handheld Computers
Battery Backup
Digital Cameras
The LT
®
1615/LT1615-1 are micropower step-up DC/DC
converters in a 5-lead low profile (1mm) ThinSOT pack-
age. The LT1615 is designed for higher power systems
with a 350mA current limit and an input voltage range of
1.2V to 15V, whereas the LT1615-1 is intended for lower
power and single-cell applications with a 100mA current
limit and an extended input voltage range of 1V to 15V.
Otherwise, the two devices are functionally equivalent.
Both devices feature a quiescent current of only 20µA at no
load, which further reduces to 0.5µA in shutdown. A
current limited, fixed off-time control scheme conserves
operating current, resulting in high efficiency over a broad
range of load current. The 36V switch allows high voltage
outputs up to 34V to be easily generated in a simple boost
topology without the use of costly transformers. The
LT1615’s low off-time of 400ns permits the use of tiny, low
profile inductors and capacitors to minimize footprint and
cost in space-conscious portable applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
L1
10µH
1-Cell Li-Ion to 20V Converter for LCD Bias
85
D1
20V
12mA
SW
LT1615
SHDN
C1
4.7µF
GND
FB
R2
130k
1615/-1 TA01
V
IN
2.5V TO 4.2V
V
IN
80
V
IN
= 4.2V
75
EFFICIENCY (%)
R1
2M
C2
1µF
70
65
60
55
50
0.1
C1: TAIYO YUDEN LMK316BJ475
C2: TAIYO YUDEN TMK316BJ105
D1: MOTOROLA MBR0530
L1: MURATA LQH3C100K24
0.3
U
Efficiency
V
IN
= 2.5V
V
IN
= 3.3V
1
3
10
LOAD CURRENT (mA)
30
1615/-1 TA01a
U
U
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