Datasheet Linear Technology LTC3802EUH#PBF — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3802
Numero de parte	LTC3802EUH#PBF

Controlador dual DC / DC síncrono bifásico de 550 kHz con seguimiento programable ascendente / descendente

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PDF, 359 Kb, Idioma: en, Archivo subido: sept 23, 2017, Páginas: 28
Dual 550kHz Synchronous 2-Phase DC/DC Controller with Programmable Up/Down Tracking

Extracto del documento

Embalaje

Package	5x5 QFN-32
Package Code	UH
Package Index	05-08-1693

Paramétricos

Architecture	Constant Frequency Voltage Mode
Demo Boards	DC653A
Design Tools	LTspice Model
Export Control	no
Features	No Rsense, Tracking, PolyPhase, External Synchronization, PLL, Burst Mode, External Synchronization, PLL, Selectable Switching Frequency, Power Good, Soft Start
Frequency	750 kHz
Frequency Adjust Range	330kHz, 550kHz, 750kHz
Frequency Sync Range	330kHz - 750kHz
Integrated Inductor	no
Ishutdown	100 µA
Isupply	6.5 mA
Max Phases	2
Monolithic	no
Number of Outputs	2
Operating Temperature Range	0 to 85 °C
Output Current	25 A
Output Current 2	25 A
Polyphase	yes
Sense Resistor	None
Switch Current	25 A
Switch Current 2	25 A
Synchronous	yes
Topology	Buck
Topology 1	Buck
Topology 2	Buck
Vin Max	30 V
Vin Min	3 V
Vout Max	27 V
Vout Maximum	0.9VIN
Vout Min	0.6 V
Vout Min 2	.8 V
Vref Accuracy Over Temp	1 %

Plan ecológico

RoHS

Obediente

Artículos

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30V, Dual Output Regulator Controller is Efficient, Rich in Features, and Saves Space &mdash LT Journal
PDF, 1.0 Mb, Archivo publicado: marzo 25, 2005
Extracto del documento
DESIGN FEATURES 30V, Dual Output Regulator Controller
is Efп¬Ѓcient, Rich in Features,
and Saves Space by Teo Yang Long and Theo Phillips
Introduction
The LTC3802 is designed to excel in
generating low output voltages from
high input voltages, a common problem for the power supplies of fast CPUs.
It is the latest in Linear TechnologyвЂ™s
family of high speed, voltage feedback,
synchronous step-down regulator
controllers. It retains the constant
frequency architecture and Burst
ModeВ® operation of the LTC1702A,
while improving on its performance
and adding features (see Table 1).
The input supply operating range
is extended from a nominal 5V to the
entire 3VвЂ“30V range. The internal
reference voltage has decreased, allowing the output to go as low as
0.6V. An advanced modulation scheme
facilitates these low duty cycles and
fast switching frequencies. The two
channels are still run 180В° out of …

Linea modelo

Serie: LTC3802 (4)

LTC3802EGN#PBF LTC3802EGN#TRPBF LTC3802EUH#PBF LTC3802EUH#TRPBF

Clasificación del fabricante

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers

Otros nombres:

LTC3802EUHPBF, LTC3802EUH PBF