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LTC1624IS8#PBF

Description
DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N Tube
CategoryPower/power management    The power supply circuit   
File Size364KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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LTC1624IS8#PBF Overview

DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N Tube

LTC1624IS8#PBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionSOP-8
Contacts8
Manufacturer packaging code05-08-1610 (S8)
Reach Compliance Codecompliant
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Maximum input voltage20 V
Minimum input voltage3.6 V
Nominal input voltage15 V
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output voltage30 V
Minimum output voltage1.9 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.752 mm
surface mountYES
Switch configurationSINGLE
Maximum switching frequency225 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.9 mm
Base Number Matches1
LTC1624
High Efficiency SO-8
N-Channel Switching
Regulator Controller
FEATURES
s
s
DESCRIPTION
The LTC
®
1624 is a current mode switching regulator
controller that drives an external N-channel power MOSFET
using a fixed frequency architecture. It can be operated in
all standard switching configurations including boost,
step-down, inverting and SEPIC. Burst Mode
TM
operation
provides high efficiency at low load currents. A maximum
high duty cycle limit of 95% provides low dropout operation
which extends operating time in battery-operated systems.
The operating frequency is internally set to 200kHz, allowing
small inductor values and minimizing PC board space. The
operating current level is user-programmable via an external
current sense resistor. Wide input supply range allows
operation from 3.5V to 36V (absolute maximum).
A multifunction pin (I
TH
/ RUN) allows external
compensation for optimum load step response plus
shutdown. Soft start can also be implemented with the
I
TH
/RUN pin to properly sequence supplies.
s
s
s
s
s
s
s
s
s
s
s
s
N-Channel MOSFET Drive
Implements Boost, Step-Down, SEPIC
and Inverting Regulators
Wide V
IN
Range: 3.5V to 36V Operation
Wide V
OUT
Range: 1.19V to 30V in Step-Down
Configuration
±
1% 1.19V Reference
Low Dropout Operation: 95% Duty Cycle
200kHz Fixed Frequency
Low Standby Current
Very High Efficiency
Remote Output Voltage Sense
Logic-Controlled Micropower Shutdown
Internal Diode for Bootstrapped Gate Drive
Current Mode Operation for Excellent Line and
Load Transient Response
Available in an 8-Lead SO Package
APPLICATIONS
s
s
s
s
s
Notebook and Palmtop Computers, PDAs
Cellular Telephones and Wireless Modems
Battery-Operated Digital Devices
DC Power Distribution Systems
Battery Chargers
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
1000pF
SENSE
I
TH
/RUN
V
FB
100pF
GND
SW
V
IN
BOOST
TG
V
IN
4.8V TO 28V
R
SENSE
0.05Ω
M1
Si4412DY
C
B
0.1µF
D1
MBRS340T3
L1
10µH
C
C
470pF
R
C
6.8k
LTC1624
R2
35.7k
R1
20k
Figure 1. High Efficiency Step-Down Converter
U
U
U
+
C
IN
22µF
35V
×
2
V
OUT
3.3V
2A
+
C
OUT
100µF
10V
×
2
1624 F01
1

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Description DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N Tube DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N T/R DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N T/R DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N T/R DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N T/R DC/DC Cntrlr Single-OUT Step Down/Step Up 2A 225kHz Automotive 8-Pin SOIC N
Is it Rohs certified? conform to incompatible conform to incompatible incompatible conform to incompatible
Maker ADI ADI ADI ADI ADI ADI ADI
package instruction SOP-8 SOP, SOP, SOP, SOP, SOP, SOP,
Reach Compliance Code compliant not_compliant compliant not_compliant not_compliant compliant not_compliant
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Maximum input voltage 20 V 36 V 36 V 36 V 36 V 36 V 36 V
Minimum input voltage 3.6 V 3.5 V 3.5 V 3.5 V 3.5 V 3.5 V 3.5 V
Nominal input voltage 15 V 15 V 15 V 15 V 15 V 15 V 15 V
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e0 e3 e0 e0 e3 e0
length 4.9 mm 4.9025 mm 4.9025 mm 4.9025 mm 4.9025 mm 4.9025 mm 4.9025 mm
Humidity sensitivity level 1 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8 8
Maximum operating temperature 85 °C 70 °C 70 °C 70 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C - - - -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP SOP SOP SOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 235 260 235 235 260 235
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.752 mm 1.752 mm 1.752 mm 1.752 mm 1.752 mm 1.752 mm 1.752 mm
surface mount YES YES YES YES YES YES YES
Switch configuration SINGLE SINGLE SINGLE SINGLE SINGLE SINGLE SINGLE
Maximum switching frequency 225 kHz 225 kHz 225 kHz 225 kHz 225 kHz 225 kHz 225 kHz
Temperature level INDUSTRIAL COMMERCIAL COMMERCIAL COMMERCIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 20 30 20 20 30 20
width 3.9 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm
technology CMOS - - - CMOS CMOS CMOS
ECCN code - EAR99 - EAR99 EAR99 - EAR99
Control Technology - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum output current - 2 A 2 A 2 A 2 A 2 A 2 A
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