Datasheet Linear Technology LT3800IFE#PBF — 数据表

制造商	Linear Technology
系列	LT3800
零件号	LT3800IFE#PBF

高压同步电流模式降压控制器

数据表

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PDF, 265 Kb, 语言: en, 文件上传: Sep 19, 2017, 页数: 24
High-Voltage Synchronous Current Mode Step-Down Controller

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价格

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Package	TSSOP-16
Package Code	FE
Package Index	05-08-1663 (BC)

参数化

Architecture	Constant Frequency Current Mode
Demo Boards	DC720A
Design Tools	LTspice File,LTpowerCAD Model
Export Control	no
Features	Burst Mode
Frequency	200 kHz
Integrated Inductor	no
Ishutdown	20 µA
Isupply	3 mA
Max Phases	1
Monolithic	no
Number of Outputs	1
Operating Temperature Range	-40 to 85 °C
Output Current	15 A
Polyphase	no
Sense Resistor	Rsense
Switch Current	20 A
Synchronous	yes
Topology	Buck, Inverting
Vin Max	60 V
Vin Min	4 V
Vout Max	36 V
Vout Maximum	36V
Vout Min	1.231 V
Vref Accuracy Over Temp	1 %
Vswitch Max	80 V

生态计划

RoHS

Compliant

设计须知

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High Voltage Current Mode Step-Down Converter with Low Power Standby Capability &mdash DN383
PDF, 126 Kb, 档案已发布: Dec 22, 2005
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High Voltage Current Mode Step-Down Converter with Low
Power Standby Capability вЂ“ Design Note 383
Jay Celani
Introduction
Low power standby requirements are typically associated with battery-powered systems. Automotive systems, for example, commonly require power supplies to
maintain output voltage regulation even under no-load
conditionsвЂ”while drawing minimal quiescent current to
preserve battery life. Rising energy costs, however, have
extended the need for low current standby operation to
line-powered systems, such as small plugged-in appliances for home and business. converter requires few external components, maintains
high conversion efп¬Ѓciencies over a wide load range and
supports low power standby operation for compliance
with system power-management requirements.
High Efп¬Ѓciency at Standby
The LT3800 is a 4VIN to 60VIN, 200kHz п¬Ѓxed-frequency
controller that uses synchronous operation and N-channel
MOSFETs to maximize high current efп¬Ѓciency. Current
mode operation with continuous high-side inductor current sensing yields fast transient response and excellent
line regulation. Low current standby requirements are met
using Burst ModeВ® operation. A reverse inductor current
inhibit feature also increases efп¬Ѓciency during light-load
conditions. The LT3800 runs directly from the converter
input supply, so there are no local supplies required to …

文章

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High Voltage Step-Down Synchronous Controller Offers Single-Supply Operation, Current Mode Control, and 100µA Burst Mode Operation &mdash LT Journal
PDF, 533 Kb, 档案已发布: Mar 25, 2005
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DESIGN FEATURES High Voltage Step-Down Synchronous
Controller Offers Single-Supply
Operation, Current Mode Control,
and 100ВµA Burst Mode Operation
by Jay Celani Introduction
As more features and functions are
packed into electronics packages, efп¬Ѓcient step-down DC/DC conversion
circuits that can handle high input
voltages at substantial load currents
are increasingly necessary. This is
especially true for distributed power
systems that have high power point
of load requirements. The LT3800 is
a feature-packed high voltage synchronous step-down controller that
simpliп¬Ѓes meeting these high power
requirements.
The LT3800 is the core of singlesupply DC/DC converter solutions
that require few external components
and maintain high-efп¬Ѓciencies over
wide load ranges. Burst Mode operation and a reverse inductor current
inhibit feature maximize efп¬Ѓciencies
during light-load and no-load conditions, making the LT3800 ideal
for use in applications with supply …

模型线

系列: LT3800 (4)

LT3800EFE#PBF LT3800EFE#TRPBF LT3800IFE#PBF LT3800IFE#TRPBF

制造商分类

Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck | External Power Switch Buck Controllers

其他名称:

LT3800IFEPBF, LT3800IFE PBF