900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LTC3534EGN Datasheet

500mA Synchronous Buck-Boost DC/DC Converter

No Preview Available !

Features
n Regulated Output with Input Voltages Above,
Below or Equal to the Output
n 2.4V to 7V VIN and 1.8V to 7V VOUT Ranges
n 5V VOUT at 500mA from 4 AA Cells
n Single Inductor
n Synchronous Rectification: Up to 94% Efficiency
n Burst Mode® Operation with 25µA IQ
n Output Disconnect in Shutdown
n 1MHz Switching Frequency
n <1µA Shutdown Current
n Small Thermally Enhanced 16-Lead (5mm × 3mm ×
0.75mm) DFN and 16-Lead GN Packages
Applications
n Medical Instruments
n Portable Barcode Readers
n Portable Inventory Terminals
n USB to 5V Supply
n Handheld GPS
LTC3534
7V, 500mA Synchronous
Buck-Boost DC/DC
Converter
Description
The LTC®3534 is a wide VIN range, highly efficient, fixed
frequency, buck-boost DC/DC converter that operates
from input voltages above, below or equal to the output
voltage. The topology incorporated in the IC provides a
continuous transfer function through all operating modes,
making the product ideal for multi-cell Alkaline/NiMH or
single Lithium-Ion/Polymer applications where the output
voltage is within the battery voltage range.
The LTC3534 offers extended VIN and VOUT ranges of 2.4V
to 7V and 1.8V to 7V, respectively. Quiescent current is
only 25µA in Burst Mode operation, maximizing battery
life in portable applications. Burst Mode operation is user
controlled and can be enabled by driving the PWM pin
low. If the PWM pin is driven high then fixed frequency
switching is enabled.
Other features include fixed 1MHz operating frequency, a
<1µA shutdown, short-circuit protection, programmable
soft-start, current limit and thermal overload protection.
The LTC3534 is available in the thermally enhanced 16-lead
(3mm × 5mm) DFN and 16-lead GN packages.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Typical Application
4 AA Cells to 5V at 500mA Buck-Boost Converter
5µH
VIN
3.6V TO 6.4V 4 AA +
CELLS 10µF
OFF ON
BURST PWM
SW1
SW2
PVIN
VOUT
VIN
LTC3534
FB
RUN/SS
10k
33pF
15k
PWM
VC
PGND1 GND PGND2 330pF
649k
162k
3534 TA01a
VOUT
5V
22µF 500mA
4 AA Cells to 5V Efficiency vs VIN
100
95
PWM IOUT = 300mA
90
PWM IOUT = 500mA
85
80
75
3.6 4.0 4.4 4.8 5.2 5.6 6.0 6.4
VIN (V)
3534 TA01b
For more information www.linear.com/LTC3534
3534fb
1


Linear Technology Electronic Components Datasheet

LTC3534EGN Datasheet

500mA Synchronous Buck-Boost DC/DC Converter

No Preview Available !

LTC3534
Absolute Maximum Ratings (Note 1)
VIN, PVIN Voltages........................................ –0.3V to 8V
VOUT Voltage................................................. –0.3V to 8V
SW1, SW2 Voltages
DC............................................................. –0.3V to 8V
Pulsed < 100ns......................................... –0.3V to 9V
RUN/SS, PWM Voltages............................... –0.3V to 8V
VC, FB Voltages............................................. –0.3V to 6V
Operating Temperature Range (Note 2)....–40°C to 85°C
Maximum Junction Temperature (Note 3)............. 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature
(Soldering, 10sec; GN Package)............................. 300°C
Pin Configuration
TOP VIEW
GND 1
RUN/SS 2
GND 3
PGND1 4
SW1 5
SW2 6
PGND2 7
GND 8
16 GND
15 FB
14 VC
17
13 VIN
12 PVIN
11 VOUT
10 PWM
9 GND
DHC PACKAGE
16-LEAD (5mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 43°C/W (4-LAYER BOARD), θJC = 4°C/W
EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB
TOP VIEW
GND 1
RUN/SS 2
GND 3
PGND1 4
SW1 5
SW2 6
PGND2 7
GND 8
16 GND
15 FB
14 VC
13 VIN
12 PVIN
11 VOUT
10 PWM
9 GND
GN PACKAGE
16-LEAD PLASTIC SSOP NARROW - FUSED
TJMAX = 125°C,θJA = 90°C/W (4-LAYER BOARD), θJC = 37°C/W
PINS 1, 8, 9, AND 16 ARE PGND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3534EDHC#PBF
LTC3534EDHC#TRPBF 3534
16-Lead (5mm × 3mm) Plastic DFN
LTC3534EGN#PBF
LTC3534EGN#TRPBF 3534
16-Lead SSOP Narrow - Fused
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3534EDHC
LTC3534EDHC#TR
3534
16-Lead (5mm × 3mm) Plastic DFN
LTC3534EGN
LTC3534EDE#TR
3534
16-Lead SSOP Narrow - Fused
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
3534fb
2
For more information www.linear.com/LTC3534


Part Number LTC3534EGN
Description 500mA Synchronous Buck-Boost DC/DC Converter
Maker Linear
PDF Download

LTC3534EGN Datasheet PDF






Similar Datasheet

1 LTC3534EGN 500mA Synchronous Buck-Boost DC/DC Converter
Linear





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy