Datasheet Linear Technology LT3741IUF#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LT3741
Artikelnummer	LT3741IUF#PBF

Hohe Leistung, konstanter Strom, konstante Spannung, Abwärtsregler

Datenblätter

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PDF, 639 Kb, Sprache: en, Datei hochgeladen: Mar 27, 2018, Seiten: 24
High Power, Constant Current, Constant Voltage, Step-Down Controller

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Preise

Verpackung

Package	4x4 QFN-20
Package Code	UF
Package Index	05-08-1710

Parameter

Architecture	Average Output Current Control
Demo Boards	DC1602A
Design Tools	LTspice File
Dimming	External Circuit
Export Control	no
Features	Output Current Regulation, Resistor Set Frequency, External Synchronization
Frequency	1000 kHz
Ishutdown	0.1 µA
Isupply	1.8 mA
Max Number of LEDs	10
Monolithic	no
Number of Outputs	1
Operating Temperature Range	-40 to 85 °C
Output Current	25 A
Switch Current	25 A
Synchronous	yes
Topology	Buck, LED Driver
Vin Max	36 V
Vin Min	6 V
Vout Max	34 V

Öko-Plan

RoHS

Compliant

Andere Optionen

LT3741-1 LT3741-1

Artikel

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Accurate Constant-Current, Constant-Voltage 20A Power Supply Ensures Safe Charging of Supercaps and Li-Ion Batteries &mdash LT Journal
PDF, 974 Kb, Datei veröffentlicht: Oct 27, 2010
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design features Accurate Constant-Current, Constant-Voltage
20A Power Supply Ensures Safe Charging of
Supercaps and Li-Ion Batteries
Josh Caldwell Many applications require a power supply that can
accurately regulate a voltage and accurately limit output
current, but there are remarkably few solutions that can
do both with a single IC. System designers must typically
trade off accuracy in one feature for accuracy in the
other by choosing between a high gain, high accuracy
voltage regulator with a crude current limit or a high
accuracy current regulator with a crude voltage clamp. SINGLE-CELL LITHIUM-ION
BATTERY CHARGER PROVIDES
10A OF CHARGING CURRENT Safety concerns and thermal limitations
of charging lithium-ion batteries mean
the charger must be able to carefully
control charging currents and voltages.
Ideally, a microcontroller can accurately
throttle back the charging current during
the initial and top-off charging phases.
This forces the use of a current regulation scheme that has precision adjustable
current control, thermal limiting capabilities, and an accurate voltage limit. The LTВ®3741 simplifies the design of
constant-current, constant-voltage regulators by combining an accurate current
regulator and an accurate voltage regulator in a single IC, thus eliminating power …

Modellreihe

Serie: LT3741 (8)

LT3741EFE#PBF LT3741EFE#TRPBF LT3741EUF#PBF LT3741EUF#TRPBF LT3741IFE#PBF LT3741IFE#TRPBF LT3741IUF#PBF LT3741IUF#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers
Power Management > LED Driver ICs > Step-Down (Buck) LED Drivers

Andere Namen:

LT3741IUFPBF, LT3741IUF PBF