Datasheet Linear Technology LTM4641 — 数据表

制造商	Linear Technology
系列	LTM4641

具高级输入和负载保护功能的 38V、10A DC/DC μModule 稳压器

数据表

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PDF, 1.5 Mb, 语言: en, 文件上传: Sep 25, 2017, 页数: 66
38V, 10A DC/DC µModule Regulator with Advanced Input and Load Protection

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价格

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	LTM4641EY#PBF	LTM4641IY	LTM4641IY#PBF	LTM4641MPY	LTM4641MPY#PBF
N	1	2	3	4	5
Package	15mm x 15mm x 5.01mm BGA 包装外形图	15mm x 15mm x 5.01mm BGA 包装外形图	15mm x 15mm x 5.01mm BGA 包装外形图	15mm x 15mm x 5.01mm BGA 包装外形图	15mm x 15mm x 5.01mm BGA 包装外形图
Package Code	BGA	BGA	BGA	BGA	BGA
Package Index	05-08-1914	05-08-1914	05-08-1914	05-08-1914	05-08-1914
Pin Count	144	144	144	144	144

参数化

Parameters / Models	LTM4641EY#PBF	LTM4641IY	LTM4641IY#PBF	LTM4641MPY	LTM4641MPY#PBF
Number of Channels	1	1	1	1	1
Demo Boards	DC1543A	DC1543A	DC1543A	DC1543A	DC1543A
Design Tools	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File
Export Control	no	no	no	no	no
Fault Ride Through Timer	no	no	no	no	no
Function	uModule Regulator, OV Disconnect, Current Limit, UV Lockout	uModule Regulator, OV Disconnect, Current Limit, UV Lockout	uModule Regulator, OV Disconnect, Current Limit, UV Lockout	uModule Regulator, OV Disconnect, Current Limit, UV Lockout	uModule Regulator, OV Disconnect, Current Limit, UV Lockout
Ishutdown, µA	200	200	200	200	200
Operating Temperature Range, °C	0 to 85	-40 to 85	-40 to 85	-55 to 125	-55 to 125
Reverse Vin	N/A	N/A	N/A	N/A	N/A
Total Quiescent Current, mA	8	8	8	8	8
Vin Range	4.5V to 38V	4.5V to 38V	4.5V to 38V	4.5V to 38V	4.5V to 38V

生态计划

	LTM4641EY#PBF	LTM4641IY	LTM4641IY#PBF	LTM4641MPY	LTM4641MPY#PBF
RoHS	Compliant	Not Compliant	Compliant	Not Compliant	Compliant

设计须知

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10A ОјModule Step-Down Regulator with Advanced Input and Load Protection &mdash DN527
PDF, 173 Kb, 档案已发布: May 7, 2014
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10A ВµModule Step-Down Regulator with Advanced Input
and Load Protection
Design Note 527
Yan Liang
Introduction
Bus voltage surges pose a danger not only to the DC/DC
converter, but also to the load. Traditional overvoltage
protection schemes involving a fuse are not necessarily
fast enough, nor dependable enough to protect loads
such as FPGAs, ASICs and microprocessors. A better
solution is to accurately and quickly detect an overvoltage condition and respond by quickly disconnecting the
input supply while discharging excess voltage at the
load with a low impedance path. This is possible with
the protection features in the LTMВ® 4641.
Power and Protection
The LTM4641 is a 4.5V to 38V input, 0.6V to 6V output,
10A step-down ОјModule В® regulator with advanced
input and load protection options, including:
(A) Input Protection Undervoltage lockout, overvoltage shutdown with
latchoff thresholds N-Channel overvoltage power-interrupt MOSFET
driver Surge stopper capable with few external components (B) Load Protection Robust, resettable latchoff overvoltage protection N-Channel overvoltage crowbar power MOSFET
driver
In addition, trip detection thresholds for the following …

文章

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µModule Regulator Powers and Protects Low Voltage µProcessors, ASICs and FPGAs from Intermediate Bus Voltage Surges &mdash LT Journal
PDF, 2.8 Mb, 档案已发布: Jul 9, 2013
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ВµModule Regulator Powers and Protects Low Voltage
ВµProcessors, ASICs and FPGAs from Intermediate Bus
Voltage Surges
Willie Chan and Jason Sekanina Intermediate bus voltages of 24V~28V nominal are
commonplace in industrial, aerospace and defense
systems where series-connected batteries may be a
backup power source and 12V bus architectures tend to
be impractical due to distribution losses. The widening
voltage gap between the system bus and the power
inputs of digital processors present design challenges
relating to power delivery, safety and solution size.
If a single-stage non-isolated step-down
DC/DC converter is used at the point of
load, it must operate with extremely
accurate PFM/PWM timing. Input surge
events can stress DC/DC converters,
presenting an overvoltage risk to the
load. Erroneous or counterfeit capacitors introduced in manufacturing may
cause output voltage excursions exceeding
the loadвЂ™s ratings potentially causing the
FPGA, ASIC or microprocessor to ignite.
Depending on the extent of the damage,
the root cause may be difficult to find. …

模型线

系列: LTM4641 (5)

LTM4641EY#PBF LTM4641IY LTM4641IY#PBF LTM4641MPY LTM4641MPY#PBF

制造商分类

Monitor, Control and Protection > Surge Stopper, Overvoltage & Overcurrent Protection
Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck
µModule Solutions > µModule Regulators > µModule Buck Regulators | Extended Temperature (H & MP) µModule Regulators

相关刊物

数据表 Datasheet Analog Devices LTM4641

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