Datasheet Linear Technology LTC3539EDCB#PBF

Manufacturer	Linear Technology
Series	LTC3539
Part Number	LTC3539EDCB#PBF

2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

Datasheets

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PDF, 194 Kb, Language: en, File uploaded: Sep 21, 2017, Pages: 14
2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

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Packaging

Package	2x3 DFN-8
Package Code	DCB
Package Index	05-08-1718

Parametrics

Architecture	Constant Frequency Current Mode
Demo Boards	DC1260A-A,DC1260A-B
Design Tools	LTspice File
Export Control	no
Features	Output Disconnect, Burst Mode
Frequency	2000 kHz
Frequency Adjust Range	1MHz or 2MHz
Integrated Inductor	no
Ishutdown	0.01 µA
Isupply	0.01 mA
Monolithic	yes
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Polyphase	no
Switch Current	2.6 A
Synchronous	yes
Topology	Boost
Vin Max	5 V
Vin Min	0.5 V
Vin Min Startup	0.7 V
Vout Max	5.25 V
Vout Min	1.5 V
Vswitch Max	6 V

Eco Plan

RoHS

Compliant

Other Options

LTC3539-2 LTC3539-2

Design Notes

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Complete Energy Utilization Improves Run Time of a Supercap Ride-Through Application by 40% &mdash DN485
PDF, 106 Kb, File published: Oct 26, 2010
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Complete Energy Utilization Improves Run Time of a Supercap
Ride-Through Application by 40% вЂ“ Design Note 485
George H. Barbehenn
Introduction
Many electronic systems require a local power source that
allows them to ride through brief main power interruptions without shutting down. Some local power sources
must be available to carry out a controlled shutdown if
the main power input is abruptly removed. Complete Energy Utilization Maximizes Run Time
of Supercap Ride-Through Application
Figure 1 shows a complete 3.3V/200mA ride-through application that maximizes the amount of power extracted
from the supercap to support the load. A battery backup can supply power in the event of a
mains shutdown, but batteries are not well suited to
this particular application. Although batteries can store
signiп¬Ѓcant amounts of energy, they cannot deliver much
power due to their signiп¬Ѓcant source impedance. Also,
batteries have п¬Ѓnite lives of ~2 to 3 years, and the maintenance required for rechargeable batteries is substantial. The LTC В®4425 complete 2A supercapacitor charger. It
clamps the individual cell voltages to ensure that the
cells do not overvoltage during charging and balances
the cells throughout charge and discharge. The main components of the ride-through application
include: The LTC3606 micropower buck regulator produces
the regulated 3.3V output. Supercapacitors are well suited to such ride-through
applications. Their low source impedance allows them
to supply signiп¬Ѓcant power for a relatively short time, …

Model Line

Series: LTC3539 (3)

LTC3539EDCB#PBF LTC3539EDCB#TRMPBF LTC3539EDCB#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost

Other Names:

LTC3539EDCBPBF, LTC3539EDCB PBF