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LT3433IFE#PBF

Description
IC REG BCK BOOST ADJ 0.5A 16TSSO
CategoryPower/power management    The power supply circuit   
File Size231KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LT3433IFE#PBF Overview

IC REG BCK BOOST ADJ 0.5A 16TSSO

LT3433IFE#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeTSSOP
package instructionHTSSOP, TSSOP16,.25
Contacts16
Manufacturer packaging codeFE
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Maximum input voltage60 V
Minimum input voltage4 V
Nominal input voltage13.8 V
JESD-30 codeR-PDSO-G16
JESD-609 codee3
length5 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current0.9 A
Package body materialPLASTIC/EPOXY
encapsulated codeHTSSOP
Encapsulate equivalent codeTSSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.1 mm
surface mountYES
Switch configurationBOOST
Maximum switching frequency230 kHz
technologyBIPOLAR
Temperature levelAUTOMOTIVE
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width4.4 mm
LT3433
High Voltage
Step-Up/Step-Down
DC/DC Converter
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Automatic Step-Up and Step-Down Conversion
Uses a Single Inductor
Wide 4V to 60V Input Voltage Range
V
OUT
from 3.3V to 20V
Dual Internal 500mA Switches
100µA No-Load Quiescent Current
Low Current Shutdown
±1%
Output Voltage Accuracy
200kHz Operating Frequency
Boosted Supply Pin to Saturate High Side Switch
Frequency Foldback Protection
Current Limit Foldback Protection
Current Limit Unaffected by Duty Cycle
16-lead Thermally Enhanced TSSOP Package
The LT
®
3433 is a 200kHz fixed-frequency current mode
switching regulator that provides both step-up and step-
down regulation using a single inductor. The IC operates
over a 4V to 60V input voltage range making it suitable for
use in various wide input voltage range applications such
as automotive electronics that must withstand both load
dump and cold crank conditions.
Internal control circuitry monitors system conditions and
converts from single switch buck operation to dual switch
bridged operation when required, seamlessly changing
between step-down and step-up voltage conversion.
Optional Burst Mode
®
operation reduces no-load quies-
cent current to 100µA and maintains high efficiencies with
light loads.
Current limit foldback and frequency foldback help pre-
vent inductor current runaway during start-up. Program-
mable soft-start helps prevent output overshoot at start-up.
The LT3433 is available in a 16-lead thermally enhanced
TSSOP package.
APPLICATIO S
s
s
s
12V Automotive Systems
Wall Adapter Powered Systems
Battery Power Voltage Buffering
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
U.S. patent number: 5731694
TYPICAL APPLICATIO
4V to 60V to 5V DC/DC Converter
with Burst Mode Operation
1N4148
V
IN
2.2µF
0.01µF
330pF
SHDN
SS
V
C
68k
1nF
BURST_EN
SWL
V
OUT
1N4148
V
BIAS
0.1µF
V
FB
100k
3433 TA01
Maximum Output
Current vs V
IN
500
V
OUT
= 5V
V
IN
V
BST
MAXIMUM OUTPUT CURRENT (mA)
0.1µF
SWH
B160A
100µH
B120A
LT3433
BUCK
400
300
EFFICIENCY (%)
+
309k
V
OUT
47µF
200
BRIDGED
100
SGND PGND
0
0
10
20
30
V
IN
(V)
40
50
60
3433 TA01c
U
Efficiency
90
80
V
IN
= 13.8V
70
60
50
40
30
20
0.1
V
IN
= 4V
1
10
100
OUTPUT CURRENT (mA)
1000
3433 TA01b
U
U
3433f
1

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Description IC REG BCK BOOST ADJ 0.5A 16TSSO IC reg buck bst adj 0.5A 16tssop IC reg buck bst adj 0.5A 16tssop Cable Assembly, Fixed Resistor, Thin Film, 0.8W, 2340ohm, 200V, 0.05% +/-Tol, 50ppm/Cel, Surface Mount, 2010, CHIP IC REG BUCK BST ADJ 0.5A 16TSSOP
Is it Rohs certified? conform to incompatible incompatible conform to incompatible conform to
Reach Compliance Code compliant _compli _compli compliant not_compliant compliant
Maximum operating temperature 125 °C 125 °C 125 °C 70 °C 155 °C 125 °C
Minimum operating temperature -40 °C - -40 °C -20 °C -55 °C -40 °C
Brand Name Linear Technology Linear Technology Linear Technology - - Linear Technology
Parts packaging code TSSOP TSSOP TSSOP - - TSSOP
package instruction HTSSOP, TSSOP16,.25 HTSSOP, TSSOP16,.25 HTSSOP, TSSOP16,.25 - CHIP TSSOP, TSSOP16,.25
Contacts 16 16 16 - - 16
Manufacturer packaging code FE FE FE - - FE
ECCN code EAR99 EAR99 EAR99 - EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR - - SWITCHING REGULATOR
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE - - CURRENT-MODE
Maximum input voltage 60 V 60 V 60 V - - 60 V
Minimum input voltage 4 V 4 V 4 V - - 4 V
Nominal input voltage 13.8 V 13.8 V 13.8 V - - 13.8 V
JESD-30 code R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 - - R-PDSO-G16
JESD-609 code e3 e0 e0 - e0 e3
length 5 mm 5 mm 5 mm 97 mm - 5 mm
Humidity sensitivity level 1 1 1 - - 1
Number of functions 1 1 1 - - 1
Number of terminals 16 16 16 - 2 16
Maximum output current 0.9 A 0.9 A 0.9 A - - 0.9 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY - - PLASTIC/EPOXY
encapsulated code HTSSOP HTSSOP HTSSOP - - TSSOP
Encapsulate equivalent code TSSOP16,.25 TSSOP16,.25 TSSOP16,.25 - - TSSOP16,.25
Package shape RECTANGULAR RECTANGULAR RECTANGULAR - - RECTANGULAR
Package form SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH - SMT SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 235 235 - - 250
Certification status Not Qualified Not Qualified Not Qualified - - Not Qualified
Maximum seat height 1.1 mm 1.1 mm 1.1 mm - - 1.1 mm
surface mount YES YES YES - YES YES
Switch configuration BOOST BOOST BUCK-BOOST - - BOOST
Maximum switching frequency 230 kHz 230 kHz 230 kHz - - 230 kHz
technology BIPOLAR BIPOLAR BIPOLAR - THIN FILM BIPOLAR
Temperature level AUTOMOTIVE OTHER AUTOMOTIVE - - AUTOMOTIVE
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) - Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING - - GULL WING
Terminal pitch 0.65 mm 0.65 mm 0.65 mm - - 0.65 mm
Terminal location DUAL DUAL DUAL - - DUAL
Maximum time at peak reflow temperature 30 20 NOT SPECIFIED - - NOT SPECIFIED
width 4.4 mm 4.4 mm 4.4 mm - - 4.4 mm
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