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LT3460ES5#TRPBF

P1-P3P4-P6P7-P9P10-P12
LT3460/LT3460-1
1
3460fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
1.3 MHz/650kHz Step-Up
DC/DC Converter in SC70,
ThinSOT and DFN
The LT
®
3460/LT3460-1 are general purpose step-up DC/
DC converters. The LT3460/LT3460-1 switch at 1.3MHz/
650kHz, allowing the use of tiny, low cost and low height
capacitors and inductors. The constant frequency results
in low, predictable output noise that is easy to fi lter.
The high voltage switches in the LT3460/LT3460-1 are
rated at 38V, making the device ideal for boost converters
up to 36V. The LT3460 can generate 12V at up to 70mA
from a 5V supply.
The low 1mA quiescent current and 650kHz switching
frequency of LT3460-1 make it ideal for lower current
applications.
The LT3460 is available in SC70 and SOT-23 packages.
The LT3460-1 is available in SC70 and 2mm × 2mm DFN
packages.
5V to 12V, 70mA Step-Up DC/DC Converter
n
1.3MHz (LT3460) Switching Frequency
n
650kHz (LT3460-1) Switching Frequency
n
High Output Voltage: Up to 36V
n
300mA Integrated Switch (LT3460)
n
180mA Integrated Switch (LT3460-1)
n
Wide Input Range: 2.5V to 16V
n
Uses Small Surface Mount Components
n
Low Shutdown Current: <1μA
n
Low Profi le (1mm) SC70 (LT3460 and LT3460-1),
SOT-23 (ThinSOT™) (LT3460) and 2mm × 2mm DFN
(LT3460-1) Packages
n
Digital Cameras
n
CCD Bias Supply
n
XDSL Power Supply
n
TFT-LCD Bias Supply
n
Local 5V or 12V Supply
n
Medical Diagnostic Equipment
n
Battery Backup
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ThinSOT is
a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
Effi ciency
Switching Waveforms
LOAD CURRENT (mA)
0
EFFICIENCY (%)
90
85
80
75
70
65
60
20 40 60 80
3460 F01a
0.2μs/DIV
3460 F01b
I
L
100mA/DIV
V
SW
5V/DIV
OFF ON
V
IN
5V
22μH
130k
15k
1μF
22pF
4.7μF
V
OUT
12V
70mA
V
IN
SW
FB
SHDN
GND
LT3460
3460 F01
LT3460/LT3460-1
2
3460fb
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V
IN
) ....................................................16V
SW Voltage ...............................................................38V
FB Voltage ...................................................................5V
SHDN Voltage ...........................................................16V
(Note 1)
5 V
IN
4 SHDN
SW 1
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
GND 2
FB 3
T
JMAX
= 125°C, θ
JA
= 256°C/W IN FREE AIR
θ
JA
= 120°C ON BOARD OVER GROUND PLANE
6 V
IN
5 GND
4 SHDN
SW 1
TOP VIEW
SC6 PACKAGE
6-LEAD PLASTIC SC70
GND 2
FB 3
T
JMAX
= 125°C, θ
JA
= 400°C/W IN FREE AIR
θ
JA
= 270°C/W ON BOARD OVER GROUND PLANE
TOP VIEW
SHDN
V
IN
FB
NC
SW
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
4
5
7
6
3
2
1
NC
T
JMAX
= 125°C, θ
JA
= 102°C/W
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3460ES5#PBF LT3460ES5#TRPBF LTB1 5-Lead Plastic TSOT-23 –40°C to 85°C
LT3460ESC6#PBF LT3460ESC6#TRPBF LAAF 6-Lead Plastic SC70 –40°C to 85°C
LT3460ESC6-1#PBF LT3460ESC6-1#TRPBF LDJV 6-Lead Plastic SC70 –40°C to 85°C
LT3460EDC-1#PBF LT3460EDC-1#TRPBF LDNB 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
Operating Ambient
Temperature Range (Note 2) ....................– 40°C to 85°C
Maximum Junction Temperature........................... 125°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
LT3460/LT3460-1
3
3460fb
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C, V
IN
= 3V, V
SHDN
= 3V, unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Minimum Operating
Voltage
2.5 2.5 V
Maximum Operating
Voltage
16 16 V
Feedback Voltage
l
1.235
1.225
1.255 1.275
1.280
1.235
1.225
1.255 1.275
1.280
V
V
Feedback Line Regulation 2.5V < V
IN
< 16V 0.015 0.015 %/V
FB Pin Bias Current
l
5 25 80 0 25 80 nA
Supply Current
SHDN = 0V
2.0
0.1
3.0
0.5
1.0
0.1
1.5
0.5
mA
μA
Switching Frequency 1.0 1.3 1.7 0.35 0.65 1.0 MHz
Maximum Duty Cycle 85 90 80 90 %
Switch Current Limit 300 420 600 180 260 380 mA
Switch V
CESAT
I
SW
= 250mA (LT3460), I
SW
= 100mA (LT3460-1) 320 450 220 350 mV
Switch Leakage Current V
SW
= 5V 0.01 1 0.01 1 μA
SHDN Voltage High 1.5 1.5 V
SHDN Voltage Low 0.4 0.4 V
SHDN Pin Bias Current 40 15 μA
Note 2: The LT3460E/LT3460-1E is guaranteed to meet specifi cations from
0°C to 70°C. Specifi cations over the –40°C to 85°C operating temperature
range are assured by design, characterization and correlation with
statistical process controls.
LT3460 LT3460-1
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current Switching Frequency SHDN Pin Bias Current
V
IN
(V)
0
2.0
10
3460 G01
1.5
0.5
1.0
5
15
0
I
Q
(mA)
2.5
100°C
25°C
–50°C
LT3460
LT3460-1
TEMPERATURE (°C)
–50
0.8
1.0
1.2
25 75
3460 G02
0.6
0.4
–25 0
50 100
0.2
0
SWITCHING FREQUENCY (MHz)
1.4
LT3460
LT3460-1
TEMPERATURE (°C)
–50
250
300
350
25 75
3460 G03
200
150
100
–25 0
50 100
50
0
SHDN PIN BIAS CURRENT (μA)
400
SHDN = 3V (LT3460)
SHDN = 16V (LT3460)
SHDN = 16V (LT3460-1)
SHDN = 3V (LT3460-1)
P1-P3P4-P6P7-P9P10-P12

LT3460ES5#TRPBF

Mfr. #:
Buy LT3460ES5#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 300mA, 1.3MHz Boost Converter
Lifecycle:
New from this manufacturer.
Delivery:
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