Datasheet Linear Technology LTC3711 — Datenblatt

Hersteller	Linear Technology
Serie	LTC3711

5-Bit einstellbar, großer Betriebsbereich, kein RSENSE-Abwärtsregler

Datenblätter

PDF, 308 Kb, Datei hochgeladen: Sep 22, 2017

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Preise

Verpackung

	LTC3711EGN#PBF	LTC3711EGN#TRPBF
N	1	2
Package	SSOP-24 Paketumrisszeichnung	SSOP-24 Paketumrisszeichnung
Package Code	GN	GN
Package Index	05-08-1641 (GN24)	05-08-1641 (GN24)
Pin Count	24	24

Parameter

Parameters / Models	LTC3711EGN#PBF	LTC3711EGN#TRPBF
Design Tools	LTspice Model	LTspice Model
Export Control	no	no
Features	VID, Resistor Set Frequency, Power Good	VID, Resistor Set Frequency, Power Good
Frequency, kHz	300	300
Integrated Inductor	no	no
Ishutdown, µA	15	15
Isupply, mA	0.9	0.9
Max Phases	2	2
Monolithic	no	no
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Output Current, A	20	20
Polyphase	no	no
Switch Current, A	20	20
Synchronous	yes	yes
Topology	Buck	Buck
Vin Max, V	36	36
Vin Min, V	4	4
Vout Max, V	2	2
Vout Min, V	0.925	0.925

Öko-Plan

	LTC3711EGN#PBF	LTC3711EGN#TRPBF
RoHS	Compliant	Compliant

Konstruktionshinweise

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Active Voltage Positioning Reduces Output Capacitors &mdash Design Solutions 10
PDF, 130 Kb, Datei veröffentlicht: 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 …

Artikel

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New No Rsense Controllers Deliver Very Low Output Voltages &mdash LT Journal
PDF, 182 Kb, Datei veröffentlicht: Feb 1, 2001
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DESIGN FEATURES New No RSENSE Controllers Deliver Very
Low Output Voltages by Christopher B. Umminger
Valley Current Control
Digital system voltages are dropping of very high efficiency DC/DC step-Enables tON(MIN) < 100ns
Introduction ever lower, yet battery voltages are
not. This forces DC/DC step-down
converters in portable products to
operate at lower duty cycles. Unfortunately, low duty cycle operation
decreases efficiency due to both
increased switching losses and the
increased importance of I2R losses at
low output voltages. Furthermore,
conventional control architectures
often have difficulty operating with
very short switch on-times. The
LTC1778 and LTC3711 with VID
address these problems with a new
architecture for buck regulators that
delivers the low output voltages and
high efficiencies that modern portable supplies require.
The LTC1778 is a step-down controller that provides synchronous
drive for two external N-channel
MOSFET switches. It comes with a …

Modellreihe

Serie: LTC3711 (2)

LTC3711EGN#PBF LTC3711EGN#TRPBF

Herstellerklassifikation

Power Management > Switching Regulator > Digitally Programmable Regulators

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