Datasheet Linear Technology LTC3711

Manufacturer	Linear Technology
Series	LTC3711

5-Bit Adjustable, Wide Operating Range, No RSENSE Step-Down Controller

Datasheets

PDF, 308 Kb, File uploaded: Sep 22, 2017

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Packaging

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

Parametrics

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

Eco Plan

	LTC3711EGN#PBF	LTC3711EGN#TRPBF
RoHS	Compliant	Compliant

Design Notes

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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 …

Articles

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New No Rsense Controllers Deliver Very Low Output Voltages &mdash LT Journal
PDF, 182 Kb, File published: 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 …

Model Line

Series: LTC3711 (2)

LTC3711EGN#PBF LTC3711EGN#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Digitally Programmable Regulators

EMS supplier

Slices

Microcontrollers