Datasheet Linear Technology LTC3819EG#TRPBF

Manufacturer	Linear Technology
Series	LTC3819
Part Number	LTC3819EG#TRPBF

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

Datasheets

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

Extract from the document

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
Extract from the document
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:

LTC3819EGTRPBF, LTC3819EG TRPBF

EMS supplier

Slices

Microcontrollers