Datasheet Linear Technology LT8650SEV#PBF — 数据表

制造商	Linear Technology
系列	LT8650S
零件号	LT8650SEV#PBF

具有6.2µA静态电流的双通道4A，42V，同步降压静音开关2

数据表

PDF, 1.5 Mb, 文件上传: Oct 20, 2017

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价格

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Package	6mm × 4mm × 0.94mm LQFN
Package Code	LQFN
Package Index	05-08-1665

参数化

Architecture	Constant Frequency Peak Current Mode
Demo Boards	DC2407A
Design Tools	LTspice File,LTpowerCAD Model
Export Control	no
Features	Low EMI, Silent Switcher 2 Architecture, Burst Mode, Resistor Set Frequency, External Synchronization, PolyPhase
Frequency	3000 kHz
Frequency Adjust Range	300kHz - 3MHz
Frequency Sync Range	300kHz - 3MHz
Integrated Inductor	no
Ishutdown	1.7 µA
Isupply	0.0037 mA
Max Phases	2
Monolithic	yes
Number of Outputs	2
Operating Temperature Range	0 to 85 °C
Output Current	4 A
Output Current 2	4 A
Polyphase	yes
Switch Current	8.5 A
Switch Current 2	8.5 A
Synchronous	yes
Topology	Buck
Topology 1	Buck
Topology 2	Buck
Vin Max	42 V
Vin Min	3 V
Vout Max	41.58 V
Vout Max 2	41.58 V
Vout Maximum	0.99Vin
Vout Min	0.8 V
Vout Min 2	0.8 V
Vref Accuracy Over Temp	1.25 %

生态计划

RoHS

Compliant

设计须知

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Dual Channel 42V, 4A Monolithic Synchronous Step-Down Silent Switcher 2 with 6.2ОјA Quiescent Current &mdash DN1044
PDF, 403 Kb, 档案已发布: Nov 14, 2017
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Design Note
Dual Channel 42V, 4A Monolithic Synchronous Step-Down Silent
Switcher 2 with 6.2ВµA Quiescent Current
Hua (Walker) Bai
Introduction
The LTВ®8650S 42V, dual channel, 4A, synchronous Silent
SwitcherВ®2 regulator features a wide input voltage range of
3V to 42V, ideal for automotive, industrial and other stepdown applications. Its quiescent current is only 6.2ВµA, with
the outputs in regulation, a critical feature in automotive
environments, where always-on systems can drain the
battery even when the car is not running. EMI can be, and
a problem if overlooked in the board layout. The Silent
Switcher 2 design of the LT8650S can save the day when
it comes to passing stringent automotive EMI standards,
since layout becomes less critical than in other designs. excursions. Switching is at 2MHz, which allows higher loop
bandwidth and faster transient response.
Figure 2 shows the output response to a 0A to 4A load step,
where VOUT drops less than 100mV for both the 3.3V and
7.5V outputs. This response is combined with high initial
accuracy for a solution that meets tight VOUT tolerances. 3.3V OUTPUT (AC)
100mV/DIV
7.5V OUTPUT (AC)
100mV/DIV 7.5V/4A and 3.3V/4A Outputs Have Fast Transient …

文章

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High Power Monolithic Silent Switcher 2 Regulators Meet CISPR 25 Class 5 EMI, Fit Tight Spaces &mdash LT Journal
PDF, 3.5 Mb, 档案已发布: Jan 3, 2018
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Journal of Power Management
January 2018 I N T H I S Volume 1 Number 1
I S S U E 2MHz buck-boost controller
drives LED headlight
cluster, meets CISPR 25
Class 5 EMI 11 the refulator: precision
voltage reference is High Power Monolithic Silent
Switcher 2 Regulators Meet CISPR
25 Class 5 EMI, Fit Tight Spaces
Hua (Walker) Bai, Dong Wang and Ying Cheng an accurate low noise
regulator for 200mA loads
17 in your pocket white noise
generator for quickly
testing circuit signal
response 26 As the quantity of electronic systems in automobiles multiplies, so
does the risk of intra-vehicle electromagnetic interference. For this
reason, electronics in modern vehicles often must meet the CISPR
25 Class 5 test standard, which stringently limits conducted and
radiated emissions. Switching power supplies, by their very nature,
are rife with EMI, and proliferate throughout an automobile. Low
EMI is now a key requirement for automobile power supplies, along
with small solution size, high
efficiency, thermal proficiency, …

模型线

系列: LT8650S (2)

LT8650SEV#PBF LT8650SIV#PBF

制造商分类

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck | Micropower Buck Regulators | High Input Voltage Buck
Power Management > Switching Regulator > Ultralow Noise Regulators

其他名称:

LT8650SEVPBF, LT8650SEV PBF

相关刊物

数据表 Datasheet Analog Devices LT8650S

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