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LTC3458EDE#TR

Description
LTC3458 - 1.4A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C
CategoryPower/power management    The power supply circuit   
File Size294KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC3458EDE#TR Overview

LTC3458 - 1.4A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C

LTC3458EDE#TR Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeDFN
package instructionHVSON, SOLCC12,.12,20
Contacts12
Manufacturer packaging codeDE/UE
Reach Compliance Codenot_compliant
ECCN codeEAR99
Other featuresADJUSTABLE OUTPUT VOLTAGE RANGE FROM 2 VOLT TO 7.5 VOLT
Analog Integrated Circuits - Other TypesBATTERY CHARGE CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage6 V
Minimum input voltage1.5 V
Nominal input voltage3.3 V
JESD-30 codeR-PDSO-N12
JESD-609 codee0
length4 mm
Humidity sensitivity level1
Number of functions1
Number of terminals12
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Nominal output voltage5 V
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Encapsulate equivalent codeSOLCC12,.12,20
Package shapeRECTANGULAR
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationBOOST
Maximum switching frequency1150 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3 mm
LTC3458
1.4A, 1.5MHz Synchronous
Step-Up DC/DC Converter
with Output Disconnect
DESCRIPTIO
The LTC
®
3458 is a high efficiency, current mode, fixed
frequency, step up DC/DC converter with true output
disconnect and inrush current limiting. The LTC3458 is
rated for a 7.5V output and includes a 0.3Ω N-channel
MOSFET switch and a 0.4Ω P-channel MOSFET synchro-
nous rectifier. The LTC3458 is well suited for battery
powered applications and includes programmable output
voltage, switching frequency and loop compensation. The
oscillator frequency can be set up to 1.5MHz or synchro-
nized to an external clock.
Quiescent current is only 15μA during Burst Mode opera-
tion maximizing battery life in portable applications. The
Burst Mode current threshold, peak current limit, and soft-
start are externally programmable. Other features include
<1μA shutdown current, antiringing control, and thermal
limit. The LTC3458 is available in a low profile (0.75mm),
3mm
×
4mm 12-pin DFN package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Burst Mode is a registered trademark of Linear Technology Corporation.
FEATURES
High Efficiency: Up to 93%
Inrush Current Limiting and Output Disconnect
Programmable Output Voltages up to 7.5V
1.5V to 6V Input Range
Programmable/Synchronizable Fixed Frequency
Operation up to 1.5MHz
Programmable Automatic Burst Mode
®
Operation
Current Mode Control with Programmable Soft-Start
Period and Peak Current Limit
700mA at 7V from 5V Input
0.3Ω N-Channel and 0.4Ω P-Channel 1.4A Switches
at 5V
OUT
Ultralow Quiescent Currents: 15μA Sleep, <1μA in
Shutdown
3mm
×
4mm Thermally Enhanced DFN Package
Point-of-Load Regulators
USB V
BUS
Power
LCD Bias
OLED Displays
APPLICATIO S
TYPICAL APPLICATIO
COEV
10μH
DQ7545
USB to 7V at 1MHz
USB to 7V
OUT
100
V
IN
2.2μF
LTC3458
GND/PGND
SHDN
SYNC
R
T
I
LIM
200k
124k
V
OUT
10pF
ON OFF
FB
COMP
0.01μF
SS
0.01μF
BURST
133k
560pF
3458 TA01a
SW
V
OUT
7V
500mA
1.5M
USB
4.35V to 5.25V
EFFICIENCY
316k
33k
10pF
22μF
X5R
75
70
0.1
0.1
1000
3458 TA01b
U
U
U
1000
95
90
85
5.25V
IN
POWER LOSS (mW)
4.35V
IN
10
POWER LOSS
80
1
10
100
LOAD CURRENT (mA)
3458fa
1

LTC3458EDE#TR Related Products

LTC3458EDE#TR LTC3458LEDE#TR
Description LTC3458 - 1.4A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C LTC3458L - 1.7A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C
Brand Name Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible
Maker Linear ( ADI ) Linear ( ADI )
Parts packaging code DFN DFN
package instruction HVSON, SOLCC12,.12,20 HVSON, SOLCC12,.12,20
Contacts 12 12
Manufacturer packaging code DE/UE DE/UE
Reach Compliance Code not_compliant not_compliant
ECCN code EAR99 EAR99
Other features ADJUSTABLE OUTPUT VOLTAGE RANGE FROM 2 VOLT TO 7.5 VOLT ADJUSTABLE OUTPUT VOLTAGE RANGE FROM 2 VOLT TO 6 VOLT
Analog Integrated Circuits - Other Types BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER
control mode CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 6 V 6 V
Minimum input voltage 1.5 V 1.5 V
Nominal input voltage 3.3 V 3.3 V
JESD-30 code R-PDSO-N12 R-PDSO-N12
JESD-609 code e0 e0
length 4 mm 4 mm
Humidity sensitivity level 1 1
Number of functions 1 1
Number of terminals 12 12
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Nominal output voltage 5 V 5 V
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HVSON
Encapsulate equivalent code SOLCC12,.12,20 SOLCC12,.12,20
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) 235 235
Certification status Not Qualified Not Qualified
Maximum seat height 0.8 mm 0.8 mm
surface mount YES YES
Switch configuration BOOST BOOST
Maximum switching frequency 1150 kHz 1150 kHz
technology CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form NO LEAD NO LEAD
Terminal pitch 0.5 mm 0.5 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED
width 3 mm 3 mm
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