LM3488MM/NOPB

Step-up DC/DC controller with single output operating at 1000kHz in a 8-pin VSSOP package
4,297 Effective Inventory

LM3488MM/NOPB

Effective Inventory4,297

Step-up DC/DC controller with single output operating at 1000kHz in a 8-pin VSSOP package

  • Manufacturer Part # : LM3488MM/NOPB

  • Package/Case: VSSOP (DGK)-8

  • Brand: Texas Instruments

  • Product Categories : DC DC Switching Controllers

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Shipping & Payment

Shipping & Payment

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Service & Packaging

Service & Packaging

About After Sales Service

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LM3488MM/NOPB DataSheet
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Details

Boasting exceptional versatility and high-performance capabilities, the LM3488MM/NOPB is a top-of-the-line low-side N-FET high-performance controller tailored for switching regulators. Its suitability for topologies requiring a low-side FET, such as boost, flyback, or SEPIC, makes it an ideal choice for a wide range of applications. Moreover, the LM3488MM/NOPB's ability to operate at extremely high switching frequencies contributes to a reduction in overall solution size, delivering outstanding performance. Its flexible switching frequency can be effortlessly adjusted from 100 kHz to 1 MHz using a single external resistor or by synchronizing to an external clock, providing precise control and adaptability to varying system requirements. The device's current mode control ensures superior bandwidth and transient response, alongside cycle-by-cycle current limiting for reliable and efficient operation. Furthermore, the LM3488MM/NOPB incorporates built-in thermal shutdown, short-circuit protection, and overvoltage protection, offering comprehensive system protection and durability. Equipped with a power-saving shutdown mode that reduces total supply current to 5 µA and allows power supply sequencing, as well as internal soft-start for limiting inrush current at start-up, this device offers advanced functionality for efficient and controlled switching regulator operation

Key Features

  • Improved transient response and reduced ripple
  • Compact size and low profile for space-sensitive applications

Application

  • LM3488MM/NOPB ideal for LED backlighting
  • Power supplies benefit from LM3488MM/NOPB
  • Motor control made easy with LM3488MM/NOPB

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Topology Boost, Flyback, Forward, SEPIC Vin (min) (V) 2.97
Vin (max) (V) 40 Vout (min) (V) 1.26
Vout (max) (V) 500 Regulated outputs (#) 1
Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1000
Iq (typ) (mA) 2.7 Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Nonsynchronous rectification, Pre-Bias Start-Up
Duty cycle (max) (%) 100 Rating Catalog
Operating temperature range (°C) -40 to 125 Type Controller

FAQs

What is LM3488MM/NOPB?

The LM3488MM/NOPB is a synchronous buck switching regulator designed by Texas Instruments. It is ideal for applications requiring high efficiency, high-frequency operation, and compact design, such as point-of-load regulation, distributed power systems, and LED driver circuits.

How Does LM3488MM/NOPB Work?

The LM3488MM/NOPB works by converting a higher input voltage to a lower output voltage with high efficiency using a synchronous buck topology. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage and current. The regulator features integrated high- and low-side power MOSFETs, simplifying the design and reducing external component count.

How Many Pins does LM3488MM/NOPB have and What are the Functions of the Pinout Configuration?

The LM3488MM/NOPB is housed in a 10-lead VSSOP (Very Small Outline Package) package. The pinout configuration includes:

  • VIN: Input voltage pin.
  • SW: Switch node connection for the inductor.
  • GND: Ground connection.
  • FB: Feedback input for output voltage regulation.
  • SS/TR: Soft-start/tracking input.
  • RT/CLK: Oscillator timing resistor and clock synchronization input.
  • COMP: Compensation pin for loop stability.
  • PGND: Power ground connection.
  • BOOST: Control input for the internal charge pump.

What are the Pros and Cons of LM3488MM/NOPB?

Pros:

  • High Efficiency: Achieves high power conversion efficiency, reducing heat dissipation.
  • Integrated MOSFETs: Internal power MOSFETs simplify the design and reduce external component count.
  • Wide Input Voltage Range: Suitable for various input voltage levels, enhancing flexibility.
  • Adjustable Frequency: Allows optimization of the switching frequency for specific applications.
  • Protection Features: Includes overcurrent, overvoltage, and thermal shutdown protection for robust operation.

Cons:

  • Complexity: Switching regulators may have more complex design requirements compared to linear regulators.
  • EMI Concerns: High-frequency operation may require attention to electromagnetic interference (EMI) issues.
  • External Components: Requires external components such as inductors and capacitors for proper operation.

Are There Any Equivalents/Alternatives to LM3488MM/NOPB for Recommendation?

  • The LM3489 from Texas Instruments is a similar synchronous buck regulator with additional features.
  • Alternatives to the LM3488MM/NOPB include the LT3573 from Analog Devices and the TPS54060 from Texas Instruments.

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