900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LT1613 Datasheet

Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter

No Preview Available !

LT1613
1.4MHz, Single Cell DC/DC
Converter in 5-Lead SOT-23
FEATURES
s Uses Tiny Capacitors and Inductor
s Internally Compensated
s Fixed Frequency 1.4MHz Operation
s Operates with VIN as Low as 1.1V
s 3V at 30mA from a Single Cell
s 5V at 200mA from 3.3V Input
s 15V at 60mA from Four Alkaline Cells
s High Output Voltage: Up to 34V
s Low Shutdown Current: <1µA
s Low VCESAT Switch: 300mV at 300mA
s Tiny 5-Lead SOT-23 Package
U
APPLICATIO S
s Digital Cameras
s Pagers
s Cordless Phones
s Battery Backup
s LCD Bias
s Medical Diagnostic Equipment
s Local 5V or 12V Supply
s External Modems
s PC Cards
TYPICAL APPLICATIO
VIN
3.3V
+ C1
15µF
SHDN
L1
4.7µH
D1
VIN SW
LT1613
SHDN
FB
GND
R1
37.4k +
VOUT
5V
200mA
C2
22µF
R2
12.1k
L1: MURATA LQH3C4R7M24 OR SUMIDA CD43-4R7
C1: AVX TAJA156M010
C2: AVX TAJB226M006
D1: MBR0520
1613 TA01
Figure 1. 3.3V to 5V 200mA DC/DC Converter
DESCRIPTIO
The LT®1613 is the industry’s first 5-lead SOT-23 current
mode DC/DC converter. Intended for small, low power
applications, it operates from an input voltage as low as
1.1V and switches at 1.4MHz, allowing the use of tiny, low
cost capacitors and inductors 2mm or less in height. Its
small size and high switching frequency enables the
complete DC/DC converter function to take up less than
0.2 square inches of PC board area. Multiple output power
supplies can now use a separate regulator for each output
voltage, replacing cumbersome quasi-regulated ap-
proaches using a single regulator and a custom trans-
former.
A constant frequency, internally compensated current
mode PWM architecture results in low, predictable output
noise that is easy to filter. The high voltage switch on the
LT1613 is rated at 36V, making the device ideal for boost
converters up to 34V as well as for Single-Ended Primary
Inductance Converter (SEPIC) and flyback designs. The
device can generate 5V at up to 200mA from a 3.3V supply
or 5V at 175mA from four alkaline cells in a SEPIC design.
The LT1613 is available in the 5-lead SOT-23 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Efficiency Curve
100
95
90
85
80
75
70
65
60
55
50
0
VIN = 1.5V
VIN = 4.2V
VIN = 3.5V
VIN = 2.8V
50 100 150 200 250 300 350 400
LOAD CURRENT (mA)
1613 TA01a
1


Linear Technology Electronic Components Datasheet

LT1613 Datasheet

Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter

No Preview Available !

LT1613
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN Voltage .............................................................. 10V
SW Voltage ................................................– 0.4V to 36V
FB Voltage ..................................................... VIN + 0.3V
Current into FB Pin ............................................... ±1mA
SHDN Voltage .......................................................... 10V
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range
Commercial ............................................. 0°C to 70°C
Extended Commercial (Note 2) ........... – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
SW 1
GND 2
FB 3
5 VIN
4 SHDN
S5 PACKAGE
5-LEAD PLASTIC SOT-23
ORDER PART NUMBER
LT1613CS5
S5 PART MARKING
LTED
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Commercial grade 0°C to 70°C, VIN = 1.5V, VSHDN = VIN unless
otherwise noted. (Note 2)
PARAMETER
Minimum Operating Voltage
Maximum Operating Voltage
Feedback Voltage
FB Pin Bias Current
Quiescent Current
Quiescent Current in Shutdown
Reference Line Regulation
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch VCESAT
Switch Leakage Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
CONDITIONS
VSHDN = 1.5V
VSHDN = 0V, VIN = 2V
VSHDN = 0V, VIN = 5V
1.5V VIN 10V
(Note 3)
ISW = 300mA
VSW = 5V
VSHDN = 3V
VSHDN = 0V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
MIN TYP MAX UNITS
0.9 1.1
V
10 V
q 1.205 1.23 1.255
V
q 27 80 nA
3 4.5 mA
0.01 0.5
0.01 1.0
µA
µA
0.02 0.2 %/V
q 1.0 1.4 1.8 MHz
q 82
86
%
550 800
mA
300 350 mV
0.01 1
µA
1V
0.3 V
25 50
0.01 0.1
µA
µA
Note 2: The LT1613C is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current limit guaranteed by design and/or correlation to static test.
2


Part Number LT1613
Description Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
Maker Linear Technology
PDF Download

LT1613 Datasheet PDF






Similar Datasheet

1 LT1610 Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
Linear Technology
2 LT1611 Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
Linear Technology
3 LT1612 Step-Down 800kHz PWM DC/DC Converter
Linear Technology
4 LT1613 Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
Linear Technology
5 LT1614 Inverting 600kHz Switching Regulator
Linear Technology
6 LT1615 Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
Linear Technology
7 LT1615-1 Micropower Step-Up DC/DC Convertersin SOT-23
Linear Technology
8 LT1616 1.4MHz Step-Down Switching Regulator
Linear Technology
9 LT1617 Micropower Inverting DC/DC Converters in SOT-23
Linear Technology





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy