LM3487QMM/NOPB

Frequency - Switching:	100kHz ~ 1.4MHz
Base Part Number:	LM3487
Supplier Device Package:	10-VSSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	100%
Series:	Automotive, AEC-Q100
Voltage - Supply (Vcc/Vdd):	2.97 V ~ 35 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck, Buck-Boost
Output Configuration:	Positive or Negative
Function:	Step-Down, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LM3487QMM/NOPB Application Field and Working Principle

The LM3487QMM/NOPB is a high-performance, integrated power management device designed for multiple applications. It is part of Texas Instruments\' broad portfolio of PMIC - Voltage Regulators - DC DC Switching Controllers, and it features an advanced combination of features and design flexibility, as well as a wide range of application support. These features include high-efficiency synchronous rectification, low dropout operation, and intelligent shutdown control, all of which make the LM3487QMM/NOPB ideal for applications such as mobile computing, automotive, and communications systems.The LM3487QMM/NOPB is an integrated switching controller specifically designed for leading edge applications that require cost-effective and energy-efficient solutions. At its heart is a PFM controller with a built-in bias regulator and integrated temperature compensation for improved performance and compensated accuracy. It also features an internal oscillator for setting the frequency, as well as user selectable parameters for peak current and switching frequency settings. There are multiple overload and over-temperature protection settings, and the device is designed to provide excellent EMI performance.The working principle of the LM3487QMM/NOPB involves a control loop that takes multiple inputs such as load current and input voltage and then produces a control voltage in order to control the switching element of the power converter. It is specifically designed to maintain output voltage regulation at all load conditions, while also providing improved line and load transient response. The unique design of the peak current control feature ensures that the power converter runs at a continually optimum load by preventing an output voltage beyond the average, as well as minimizing the amount of output ripple. Additionally, the low power loss design of the integrated bias regulator allows for improved efficiency of the power converter.The device also contains a plethora of features such as protection against uncontrolled startup, short circuit protection, overvoltage protection, and a number of fault reporting and detection functions. The LM3487QMM/NOPB also has a low quiescent current shutdown function allowing for reduced power consumption when the system is in a standby mode.The LM3487QMM/NOPB is a device designed to provide a flexible and reliable power solution for a variety of application fields. It offers improved performance, stability, and efficiency over traditional switching controllers, making it ideal for mobile, automotive, and communications applications. Its advanced features, combined with an internal bias regulator and integrated temperature compensation, make it an ideal choice for high-performance applications.

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