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Linear Technology Electronic Components Datasheet

LTC3824IMSE Datasheet

High Voltage Step-Down Controller

No Preview Available !

Features
n Wide Input Range: 4V to 60V
n Current Mode Constant Frequency PWM
n Very Low Dropout Operation: 100% Duty Cycle
n Programmable Switching Frequency:
200kHz to 600kHz
n Selectable High Efficient Burst Mode® Operation:
40µA Quiescent Current
n Easy Synchronization
n 8V, 2A Gate Drive (VCC > 10V) for Industrial High
Voltage P-Channel MOSFET
n Programmable Soft-Start
n Programmable Current Limit
n Available in a Small 10-Pin Thermally Enhanced
MSE Package
Applications
n Industrial and Automotive Power Supplies
n Telecom Power Supplies
n Distributed Power Systems
LTC3824
High Voltage Step-Down
Controller With 40µA
Quiescent Current
Description
The LTC®3824 is a step-down DC/DC controller designed
to drive an external P-channel MOSFET. With a wide input
range of 4V to 60V and a high voltage gate driver, the
LTC3824 is suitable for many industrial and automotive
high power applications. Constant frequency current mode
operation provides excellent performance.
The LTC3824 can be configured for Burst Mode operation.
Burst Mode operation enhances low current efficiency
(only 40µA quiescent current) and extends battery run
time. The switching frequency can be programmed up to
600kHz and is easily synchronizable.
Other features include current limit, soft-start, micropower
shutdown, and Burst Mode disable.
The LTC3824 is available in a 10-lead MSE power package.
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 5731964.
Typical Application
VIN
5.5V TO 60V
CIN +
33µF
100V
5V/2A Buck Converter
CCAP
0.1µF
CAP
VCC
SENSE
LTC3824
RS
0.025Ω
392k
RSET
GND
GATE
22µH
100pF
VOUT
5V
COUT 2A
100µF
×2
SYNC/MODE
VFB
SS VC
0.1µF
10k
51Ω 422k
80.6k
3824 TA01
3.3nF
Efficiency and Power Loss vs Load Current
100
2.5
90 EFFICIENCY
80
VIN = 12V
2.0
VIN = 40V
1.5
70
1.0
60
50
10
POWER LOSS
VIN = 40V
VIN = 12V
100
1000
LOAD CURRENT (mA)
0.5
0
2000
3824 TA01a
For more information www.linear.com/LTC3824
3824fh
1


Linear Technology Electronic Components Datasheet

LTC3824IMSE Datasheet

High Voltage Step-Down Controller

No Preview Available !

LTC3824
Absolute Maximum Ratings
(Note 1)
VCC ............................................................................65V
SS, RSET, VFB ..............................................................4V
VC ...............................................................................3V
SYNC/MODE................................................................6V
VCC – VSENSE ...............................................................1V
Operating Junction Temperature Range
(Note 2)................................................... –55°C to 150°C
Storage Temperature Range...................... –65° to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
Pin Configuration
TOP VIEW
GND 1
10 CAP
SYNC/MODE 2
RSET 3
VC 4
11
GND
9 GATE
8 VCC
7 SENSE
VFB 5
6 SS
MSE PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 43°C/W, θJC = 3°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3824EMSE#PBF
LTC3824EMSE#TRPBF LTBRZ
10-Lead Plastic MSOP
–40°C to 125°C
LTC3824IMSE#PBF
LTC3824IMSE#TRPBF LTCGZ
10-Lead Plastic MSOP
–40°C to 125°C
LTC3824HMSE#PBF
LTC3824HMSE#TRPBF LTCGZ
10-Lead Plastic MSOP
–40°C to 150°C
LTC3824MPMSE#PBF LTC3824MPMSE#TRPBF LTCGZ
10-Lead Plastic MSOP
–55°C to 150°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3824EMSE
LTC3824EMSE#TR
LTBRZ
10-Lead Plastic MSOP
–40°C to 125°C
LTC3824IMSE
LTC3824IMSE#TR
LTCGZ
10-Lead Plastic MSOP
–40°C to 125°C
LTC3824HMSE
LTC3824HMSE#TR
LTCGZ
10-Lead Plastic MSOP
–40°C to 150°C
LTC3824MPMSE
LTC3824MPMSE#TR
LTCGZ
10-Lead Plastic MSOP
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
3824fh
2
For more information www.linear.com/LTC3824


Part Number LTC3824IMSE
Description High Voltage Step-Down Controller
Maker Linear Technology
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