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LTC3526EDC-2#TRPBF

Description
Switching Voltage Regulators 500mA, 2MHz Synch Step -Up in DFN
CategoryPower/power management    The power supply circuit   
File Size329KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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LTC3526EDC-2#TRPBF Overview

Switching Voltage Regulators 500mA, 2MHz Synch Step -Up in DFN

LTC3526EDC-2#TRPBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionHVSON,
Contacts6
Manufacturer packaging code05-08-1703
Reach Compliance Codecompliant
Other featuresOPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5 V
Minimum input voltage0.5 V
Nominal input voltage1.2 V
JESD-30 codeS-PDSO-N6
JESD-609 codee3
length2 mm
Humidity sensitivity level1
Number of functions1
Number of terminals6
Maximum operating temperature85 °C
Minimum operating temperature
Maximum output current0.7 A
Nominal output voltage3.3 V
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationBOOST
Maximum switching frequency2400 kHz
technologyCMOS
Temperature levelOTHER
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width2 mm
Contact Linear Technology for Potential Replacement
NOT RECOMMENDED FOR NEW DESIGNS
LTC3526-2/LTC3526B-2
500mA 2MHz Synchronous
Step-Up DC/DC Converters
in 2mm
×
2mm DFN
Description
The LTC
®
3526-2/LTC3526B-2 are synchronous, fixed
frequency step-up DC/DC converters with output discon-
nect. Synchronous rectification enables high efficiency
in the low profile 2mm × 2mm DFN package. Battery life
in single AA/AAA powered products is extended further
with an 850mV start-up voltage and operation down to
500mV once started.
A switching frequency of 2MHz minimizes solution foot-
print by allowing the use of tiny, low profile inductors
and ceramic capacitors. The current mode PWM design
is internally compensated, reducing external parts count.
The LTC3526-2 features Burst Mode operation at light load
conditions, while the LTC3526B-2 features continuous
switching. Anti-ring circuitry eliminates EMI concerns by
damping the inductor in discontinuous mode. Additional
features include a low shutdown current of under 1µA and
thermal shutdown.
The LTC3526-2/LTC3526B-2 are housed in a 6-pin
2mm × 2mm × 0.75mm DFN package.
For new designs, we recommend the LTC3526L-2/
LTC3526LB-2.
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Patents pending.
FeAtures
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Delivers 3.3V at 100mA from a Single Alkaline/
NiMH Cell or 3.3V at 200mA from Two Cells
V
IN
Start-Up Voltage: 850mV
V
IN
Operating Range: 0.5V to 5V
1.6V to 5.25V V
OUT
Range
Up to 94% Efficiency
Output Disconnect
2MHz Fixed Frequency Operation
V
IN
> V
OUT
Operation
Integrated Soft-Start
Current Mode Control with Internal Compensation
Burst Mode
®
Operation with 9µA Quiescent Current
(LTC3526-2)
Low Noise PWM Operation (LTC3526B-2)
Internal Synchronous Rectifier
Logic Controlled Shutdown (I
Q
< 1µA)
Anti-Ringing Control
Low Profile (2mm × 2mm × 0.75mm) DFN-6 Package
ApplicAtions
n
n
n
n
n
Medical Instruments
Flash-Based MP3 Players
Noise Canceling Headphones
Wireless Mice
Bluetooth Headsets
typicAl ApplicAtion
2.2µH
SW
V
IN
1µF
OFF ON
V
OUT
1.78M
LTC3526-2
SHDN
GND
FB
1M
35262b2 TA01a
LTC3526-2 Efficiency and Power Loss vs Load Current
100
90
80
EFFICIENCY (%)
V
IN
= 2.4V
EFFICIENCY
1000
100
POWER LOSS (mW)
V
IN
1.6V TO 3.2V
V
OUT
3.3V
200mA
4.7µF
70
60
50
40
30
20
10
0
0.01
0.1
1
10
100
0.01
1000
35262b2 TA01b
10
POWER LOSS
1
0.1
LOAD CURRENT (mA)
35262b2fc


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Description Switching Voltage Regulators 500mA, 2MHz Synch Step -Up in DFN Switching Voltage Regulators LTC3526-2 - 500mA 2MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN Fixed Resistor, Wire Wound, 2W, 123ohm, 0.05% +/-Tol, -20,20ppm/Cel, Switching Voltage Regulators LTC3526-2 - 500mA 2MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN Switching Voltage Regulators 500mA, 2MHz Synch Step -Up in DFN Switching Voltage Regulators 500mA, 2MHz Synch Step -Up in DFN Switching Voltage Regulators LTC3526-2 - 500mA 2MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN Switching Regulator LTC3526-2 - 500mA 2MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN
Is it Rohs certified? conform to incompatible incompatible conform to conform to conform to incompatible incompatible
Reach Compliance Code compliant not_compliant unknown compliant compliant compliant not_compliant not_compliant
JESD-609 code e3 e0 e0 e3 e3 e3 e0 e0
Number of terminals 6 6 2 6 6 6 6 6
Maximum operating temperature 85 °C 85 °C 250 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE Axial SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
surface mount YES YES NO YES YES YES YES YES
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn60Pb40) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Maker ADI ADI - ADI ADI ADI ADI ADI
package instruction HVSON, 3 X 3 MM, PLASTIC, MO-229WEED-2, DFN-10 - HVSON, HVSON, HVSON, 3 X 3 MM, PLASTIC, MO-229WEED-2, DFN-10 3 X 3 MM, PLASTIC, MO-229WEED-2, DFN-10
Other features OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V - PRECISION, NON INDUCTIVE OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V OPERATES IN ADJUSTABLE MODE FROM 1.6V TO 5.25V - -
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR - SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR
control mode CURRENT-MODE CURRENT-MODE - CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 5 V 5 V - 5 V 5 V 5 V 5 V 5 V
Minimum input voltage 0.5 V 0.5 V - 0.5 V 0.5 V 0.5 V 0.5 V 0.5 V
Nominal input voltage 1.2 V 1.2 V - 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V
JESD-30 code S-PDSO-N6 S-PDSO-N6 - S-PDSO-N6 S-PDSO-N6 S-PDSO-N6 S-PDSO-N6 S-PDSO-N6
length 2 mm 2 mm - 2 mm 2 mm 2 mm 2 mm 2 mm
Humidity sensitivity level 1 1 - 1 1 1 1 1
Number of functions 1 1 - 1 1 1 1 1
Maximum output current 0.7 A 0.5 A - 0.7 A 0.5 A 0.5 A 0.5 A 0.5 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HVSON - HVSON HVSON HVSON HVSON HVSON
Package shape SQUARE SQUARE - SQUARE SQUARE SQUARE SQUARE SQUARE
Peak Reflow Temperature (Celsius) 260 235 - 260 260 260 235 235
Certification status Not Qualified Not Qualified - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 0.8 mm 0.8 mm - 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm
Switch configuration BOOST BOOST - BOOST BOOST BOOST BOOST BOOST
Maximum switching frequency 2400 kHz 2400 kHz - 2400 kHz 2400 kHz 2400 kHz 2400 kHz 2400 kHz
technology CMOS - WIRE WOUND CMOS CMOS CMOS - -
Temperature level OTHER OTHER - OTHER OTHER OTHER OTHER OTHER
Terminal form NO LEAD NO LEAD - NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD
Terminal pitch 0.5 mm 0.5 mm - 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm
Terminal location DUAL DUAL - DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 20 - 30 30 30 20 20
width 2 mm 2 mm - 2 mm 2 mm 2 mm 2 mm 2 mm
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