Datasheet Linear Technology LTC3864HDE#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3864
Artikelnummer	LTC3864HDE#PBF

60-V-DC / DC-Abwärtsregler mit niedrigem IQ und 100% Einschaltdauer

Datenblätter

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PDF, 709 Kb, Sprache: en, Datei hochgeladen: Sep 24, 2017, Seiten: 30
60V Low IQ Step-Down DC/DC Controller with 100% Duty Cycle Capability

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Preise

Verpackung

Package	4x3 DFN-12
Package Code	DE/UE
Package Index	05-08-1695

Parameter

Architecture	Constant Frequency Current Mode
Demo Boards	DC1722A,DC2434A
Design Tools	LTspice File,LTpowerCAD File
Export Control	no
Features	100% Duty Cycle, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good
Frequency	850 kHz
Frequency Adjust Range	50kHz - 850kHz
Frequency Sync Range	75kHz - 750kHz
Integrated Inductor	no
Ishutdown	7 µA
Isupply	0.04 mA
Max Phases	1
Monolithic	no
Number of Outputs	1
Operating Temperature Range	-40 to 125 °C
Output Current	5 A
Polyphase	no
Sense Resistor	Rsense
Switch Current	5 A
Synchronous	no
Topology	Buck
Vin Max	60 V
Vin Min	3.5 V
Vout Max	60 V
Vout Maximum	Vin
Vout Min	0.8 V
Vref Accuracy Over Temp	1 %

Öko-Plan

RoHS

Compliant

Artikel

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40µA IQ, P-Channel Step-Down Controller Operates from 60V to 3.5V VIN and Maintains High Efficiency at Light Loads &mdash LT Journal
PDF, 2.7 Mb, Datei veröffentlicht: Apr 10, 2013
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40ВµA IQ, P-Channel Step-Down Controller Operates from
60V to 3.5V VIN and Maintains High Efficiency at Light Loads
Terry Groom The LTC3864 is low IQ step-down DC/DC controller. It controls an external
P-channel MOSFET to provide excellent light load efficiency, wide input voltage
range (3.5VвЂ“60V) including low dropout operation, reliability and functional simplicity
in an easy-to-use 12-pin package. The LTC3864 is capable of 100% duty factor
operation, allowing continued operation with input supply voltage droop. HIGH EFFICIENCY
PMOS CONTROLLER The LTC3864 offers high efficiency at
full and light load by virtue of a strong
0.9О© turn-on and 2О© turn-off gate driver
and 40Вµ A low IQ Burst ModeВ® operation. Modern automotive always-on
applications often require less than
70Вµ A total supply current to prevent
battery drain. Burst Mode switching
and a low IQ of only 40Вµ A allows high
efficiency at these very low currents.
Figure 1 shows a typical efficiency graph,
showing very little decline as the load
current is reduced. Light load efficiency
is achieved in two ways: first by low
frequency Burst Mode switching, and
second by low VIN IQ. In light load Burst
Mode operation, the load current is …

Modellreihe

Serie: LTC3864 (16)

LTC3864EDE#PBF LTC3864EDE#TRPBF LTC3864EMSE#PBF LTC3864EMSE#TRPBF LTC3864HDE#PBF LTC3864HDE#TRPBF LTC3864HMSE#PBF LTC3864HMSE#TRPBF LTC3864IDE#PBF LTC3864IDE#TRPBF LTC3864IMSE#PBF LTC3864IMSE#TRPBF LTC3864MPDE#PBF LTC3864MPDE#TRPBF LTC3864MPMSE#PBF LTC3864MPMSE#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | High Input Voltage Buck | External Power Switch Buck Controllers
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

Andere Namen:

LTC3864HDEPBF, LTC3864HDE PBF

Verwandte Veröffentlichungen

Datenblätter Datasheet Analog Devices LTC3864

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