Datasheet Linear Technology LTC3819EG#PBF

Manufacturer	Linear Technology
Series	LTC3819
Part Number	LTC3819EG#PBF

2-Phase, High Efficiency, Step-Down Controller for Sun Server CPUs

Datasheets

PDF, 397 Kb, File uploaded: Sep 23, 2017

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Prices

Packaging

Package	SSOP-36
Package Code	G
Package Index	05-08-1640 (G36)

Parametrics

Architecture	Constant Frequency Current Mode
Export Control	no
Features	VID, PolyPhase, Differential Remote Sense, Power Good, Burst Mode
Frequency	300 kHz
Frequency Adjust Range	150kHz - 300kHz
Frequency Sync Range	150kHz - 300kHz
Integrated Inductor	no
Ishutdown	20 µA
Isupply	1.2 mA
Max Phases	2
Monolithic	no
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	45 A
Polyphase	yes
Sense Resistor	Rsense
Switch Current	45 A
Synchronous	yes
Topology	Buck
Vin Max	36 V
Vin Min	4 V
Vout Max	1.4125 V
Vout Maximum	1.025V to 1.4125V
Vout Min	1.025 V

Eco Plan

RoHS

Compliant

Design Notes

Download
Active Voltage Positioning Reduces Output Capacitors &mdash Design Solutions 10
PDF, 130 Kb, File published: Nov 1, 1999
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Design Solutions 10
November 1999
Active Voltage Positioning Reduces Output Capacitors
by Robert Sheehan
INTRODUCTION
Power supply performance, especially transient response,
is key to meeting todayвЂ™s demands for low voltage, high
current microprocessor power. In an effort to minimize
the voltage deviation during a load step, a technique that
has recently been coined вЂњactive voltage positioningвЂќ is
generating substantial interest and gaining popularity in
the portable computer market. The benefits include lower
peak-to-peak output voltage deviation for a given load
step, without having to increase the output filter capacitance. Alternatively, the output filter capacitance can be
reduced while maintaining the same peak-to-peak transient response.
BASIC PRINCIPLE
The term вЂњactive voltage positioningвЂќ (AVP) refers to
setting the power supply output voltage at a point that is
dependent on the load current. At minimum load, the
output voltage is set to a slightly higher than nominal level.
At full load, the output voltage is set to a slightly lower than
nominal level. Effectively, the DC load regulation is
degraded, but the load transient voltage deviation will be …

Model Line

Series: LTC3819 (2)

LTC3819EG#PBF LTC3819EG#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Digitally Programmable Regulators

Other Names:

LTC3819EGPBF, LTC3819EG PBF

EMS supplier

Slices

Microcontrollers