Datasheet Linear Technology LTC3720EGN#PBF — 数据表

制造商	Linear Technology
系列	LTC3720
零件号	LTC3720EGN#PBF

单相VRM8.5电流模式降压控制器

数据表

PDF, 303 Kb, 文件上传: Sep 22, 2017

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价格

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Package	SSOP-28
Package Code	GN
Package Index	05-08-1641 (GN28)

参数化

Demo Boards	DC483A
Design Tools	LTspice Model
Export Control	no
Features	VID, Active Voltage Positioning, Resistor Set Frequency, Power Good
Frequency	200 kHz
Frequency Adjust Range	150kHz - 300kHz
Integrated Inductor	no
Ishutdown	15 µA
Isupply	0.9 mA
Max Phases	1
Monolithic	no
Number of Outputs	1
Operating Temperature Range	0 to 85 °C
Output Current	20 A
Polyphase	no
Switch Current	20 A
Synchronous	yes
Topology	Buck
Vin Max	36 V
Vin Min	4 V
Vout Max	1.825 V
Vout Min	1.05 V

生态计划

RoHS

Compliant

设计须知

下载
Active Voltage Positioning Reduces Output Capacitors &mdash Design Solutions 10
PDF, 130 Kb, 档案已发布: 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 …

文章

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VRM8.5 Design with the LTC3720 Achieves Small Size and Fast Transient Response &mdash LT Journal
PDF, 174 Kb, 档案已发布: Aug 9, 2004
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DESIGN IDEAS VRM8.5 Design with the LTC3720
Achieves Small Size and Fast Transient
Response
by David Chen
Several different brands of CPUs
fall into IntelВ® VRM8.5 category. Depending upon clock frequency and
computation power, these CPUs consume different levels of supply current
ranging from several amperes to 30A.
The newly released LTC3720 single-3.3V POWER GOOD
BAT54C 3 CSS
0.1ВµF 1
0.01ВµF INT VCC 2
4 CC 220pF R
VP2
105k
RVP1 21.0k 5
6
20k 220pF 7 David Chen Lower the Output Voltage Ripple of
Positive-to-Negative DC/DC Converters
with Optimum Capacitor Hook-Up
. 22
Keith Szolusha Use a Single Input to Acquire Two
Similar Signals Simultaneously and …

模型线

系列: LTC3720 (2)

LTC3720EGN#PBF LTC3720EGN#TRPBF

制造商分类

Power Management > Switching Regulator > Digitally Programmable Regulators

其他名称:

LTC3720EGNPBF, LTC3720EGN PBF

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