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LTC3534EDHC#PBF

Description
Conv DC-DC 2.4V to 7V Synchronous Step Down Single-Out 1.8V to 7V 0.5A 16-Pin DFN EP Tube
File Size312KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC3534EDHC#PBF Overview

Conv DC-DC 2.4V to 7V Synchronous Step Down Single-Out 1.8V to 7V 0.5A 16-Pin DFN EP Tube

LTC3534EDHC#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeSynchronous Step Down
Output TypeAdjustable
Switching Frequency (kHz)1150
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)1.8 to 7
Maximum Output Current (A)0.5
Minimum Input Voltage (V)2.4
Maximum Input Voltage (V)7
Typical Quiescent Current (uA)420
Efficiency (%)94
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTube
Pin Count16
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length5
Package Width3
PCB changed16
Lead ShapeNo Lead
FeaTures
n
n
n
n
n
n
n
n
n
n
LTC3534
7V, 500mA Synchronous
Buck-Boost DC/DC
Converter
DescripTion
The
LTC
®
3534
is a wide V
IN
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 V
IN
and V
OUT
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.
Regulated Output with Input Voltages Above,
Below or Equal to the Output
2.4V to 7V V
IN
and 1.8V to 7V V
OUT
Ranges
5V V
OUT
at 500mA from 4 AA Cells
Single Inductor
Synchronous Rectification: Up to 94% Efficiency
Burst Mode
®
Operation with 25µA I
Q
Output Disconnect in Shutdown
1MHz Switching Frequency
<1µA Shutdown Current
Small Thermally Enhanced 16-Lead (5mm
×
3mm
×
0.75mm) DFN and 16-Lead GN Packages
applicaTions
n
n
n
n
n
Medical Instruments
Portable Barcode Readers
Portable Inventory Terminals
USB to 5V Supply
Handheld GPS
Typical applicaTion
4 AA Cells to 5V at 500mA Buck-Boost Converter
5µH
100
4 AA Cells to 5V Efficiency vs V
IN
4 AA
CELLS
+
10µF
OFF ON
EFFICIENCY (%)
V
IN
3.6V TO 6.4V
SW1
PV
IN
V
IN
LTC3534
RUN/SS
PWM
SW2
V
OUT
10k
FB
V
C
162k
3534 TA01a
95
V
OUT
5V
22µF 500mA
PWM I
OUT
= 300mA
90
PWM I
OUT
= 500mA
85
649k
33pF
15k
BURST PWM
PGND1 GND PGND2 330pF
80
75
3.6
4.0
4.4
4.8 5.2
V
IN
(V)
5.6
6.0
6.4
3534 TA01b
3534fb
For more information
www.linear.com/LTC3534
1

LTC3534EDHC#PBF Related Products

LTC3534EDHC#PBF LTC3534EDHC#TRPBF
Description Conv DC-DC 2.4V to 7V Synchronous Step Down Single-Out 1.8V to 7V 0.5A 16-Pin DFN EP Tube Conv DC-DC 2.4V to 7V Synchronous Step Down Single-Out 1.8V to 7V 0.5A 16-Pin DFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant
ECCN (US) EAR99 EAR99
Part Status Active Active
HTS 8542.39.00.01 8542.39.00.01
Type Synchronous Step Down Synchronous Step Down
Output Type Adjustable Adjustable
Switching Frequency (kHz) 1150 1150
Switching Regulator Yes Yes
Number of Outputs 1 1
Output Voltage (V) 1.8 to 7 1.8 to 7
Maximum Output Current (A) 0.5 0.5
Minimum Input Voltage (V) 2.4 2.4
Maximum Input Voltage (V) 7 7
Typical Quiescent Current (uA) 420 420
Efficiency (%) 94 94
Minimum Operating Temperature (°C) -40 -40
Maximum Operating Temperature (°C) 85 85
Supplier Temperature Grade Extended Extended
Packaging Tube Tape and Reel
Pin Count 16 16
Standard Package Name DFN DFN
Supplier Package DFN EP DFN EP
Mounting Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max)
Package Length 5 5
Package Width 3 3
PCB changed 16 16
Lead Shape No Lead No Lead
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