Datasheet Linear Technology LTC3562 — Datenblatt

Hersteller	Linear Technology
Serie	LTC3562

I2C Quad Synchronous Step-Down DC / DC-Regler 2 x 600 mA, 2 x 400 mA

Datenblätter

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PDF, 258 Kb, Sprache: en, Datei hochgeladen: Sep 22, 2017, Seiten: 20
I2C Quad Synchronous Step-Down DC/DC Regulator 2 x 600mA, 2 x 400mA

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Verpackung

	LTC3562EUD#PBF	LTC3562EUD#TRPBF
N	1	2
Package	3x3 QFN-20 Paketumrisszeichnung	3x3 QFN-20 Paketumrisszeichnung
Package Code	UD	UD
Package Index	05-08-1720	05-08-1720
Pin Count	20	20

Parameter

Parameters / Models	LTC3562EUD#PBF	LTC3562EUD#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1123A	DC1123A
Export Control	no	no
Features	I2C Control, Adjustable Slew Rate, Burst Mode, 100% Duty Cycle	I2C Control, Adjustable Slew Rate, Burst Mode, 100% Duty Cycle
Frequency, kHz	2250	2250
Integrated Inductor	no	no
Ishutdown, µA	0.7	0.7
Isupply, mA	0.024	0.024
Max Phases	1	1
Monolithic	yes	yes
Number of Outputs	4	4
Operating Temperature Range, °C	0 to 85	0 to 85
Output Current, A	0.6	0.6
Output Current 2, A	0.6	0.6
Output Current 3, A	0.4	0.4
Polyphase	no	no
Switch Current, A	1.2	1.2
Switch Current 2, A	1.2	1.2
Switch Current 3, A	0.8	0.8
Synchronous	yes	yes
Topology	Buck	Buck
Topology 1	Buck	Buck
Topology 2	Buck	Buck
Topology 3	Buck	Buck
Vin Max, V	5.5	5.5
Vin Min, V	2.85	2.85
Vout Max, V	5	5
Vout Max 2, V	5	5
Vout Max 3, V	5	5
Vout Maximum	Vin	Vin
Vout Min, V	0.425	0.425
Vout Min 2, V	0.6	0.6
Vout Min 3, V	0.6	0.6
Vref Accuracy Over Temp, %	3	3

Öko-Plan

	LTC3562EUD#PBF	LTC3562EUD#TRPBF
RoHS	Compliant	Compliant

Konstruktionshinweise

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Compact I2C-Controllable Quad Synchronous Step-Down DC/DC Regulator for Power-Conscious Portable Processors &mdash DN442
PDF, 106 Kb, Datei veröffentlicht: May 2, 2008
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Compact I2C-Controllable Quad Synchronous Step-Down
DC/DC Regulator for Power-Conscious Portable Processors
Design Note 442
Jim Drew
Introduction
The LTCВ®3562 quad output step-down regulator is designed
for multicore handheld microprocessor applications that
operate from a single Li-Ion battery. Its four monolithic, high
efп¬Ѓciency buck regulators support IntelвЂ™s mobile CPU P-State
and C-State energy saving operating modes. The output
voltages are independently controllable via I2C, and each
output can be independently started and shut down. Designers can choose from power saving pulse-skipping mode or
Burst ModeВ® operation, or select low noise LDO mode. The
space-saving LTC3562 is available in a 3mm Г— 3mm QFN
package and requires few external components.
Four I2C-Controllable Regulators
Two of the regulators provide up to 600mA of output
current each while the other two provide up to 400mA
each. All regulators are internally compensated, so no
external compensation components are needed.
One of the 600mA regulators and one of the 400mA regulators (R600A and R400A) feature I2C-controllable feedback
voltages, as shown in Figure 1. The output voltages of
these вЂњType AвЂќ regulators are set by a combination of external programming resistors and I2C-adjustable feedback …

Artikel

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I²C Quad Buck Regulator Packs Performance, Functionality, Versatility and Adaptability in a 3mm × 3mm QFN &mdash LT Journal
PDF, 285 Kb, Datei veröffentlicht: Jan 14, 2008
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LвЂ‰DESIGN IDEAS I2C Quad Buck Regulator Packs
Performance, Functionality, Versatility
and Adaptability in a 3mm Г— 3mm QFN
by Joe Panganiban
I2C Programmable
The LTC3562 is an I2C quadruple erating modes to satisfy the various Output Voltages
Introduction step-down regulator composed of four
extremely versatile monolithic buck
converters. Two 600mA and two 400mA
highly adjustable step-down regulators
provide a total of 2A of available output
current, all packed inside a 3mm Г— 3mm
QFN package. All four regulators are
2.25MHz, constant-frequency, current
mode switching buck converters whose
output voltages and operating modes
can be independently adjusted through
I2C control. The 2.7V to 5.5V input
voltage range makes it ideally suited for
single Li-Ion battery-powered applications requiring multiple independent
voltage supply rails. I2C Programmable
Operating Modes All four LTC3562 step-down regulators have the unique ability to be
programmed into four distinct op-noise/power demands of a variety of …

Modellreihe

Serie: LTC3562 (2)

LTC3562EUD#PBF LTC3562EUD#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | Multiple Output Buck
Power Management > Switching Regulator > Digitally Programmable Regulators