LM2623-Q1

ACTIVE

Gated-Oscillator-Based Automotive DC-DC Boost Converter

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Product details

Parameters

Vin (Min) (V) 1 Vin (Max) (V) 14 Vout (Min) (V) 1.24 Vout (Max) (V) 14 Switch current limit (Typ) (A) 2.85 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 2000 Iq (Typ) (mA) 0.11 Features Enable Duty cycle (Max) (%) 90 Operating temperature range (C) -40 to 125 Rating Automotive open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

WSON (NHL) 14 16 mm² 4 x 4 open-in-new Find other Boost converters (integrated switch)

Features

  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4A
  • Good Efficiency Over a Very Wide Load Range
  • Very Low Output Voltage Ripple
  • Up to 2-MHz Switching Frequency
  • 0.9-V to 14-V Operating Voltage
  • 1.1-V Start-Up Voltage
  • 1.24-V to 14-V Adjustable Output Voltage
  • 0.17-Ω Internal MOSFET
  • Up to 90% Regulator Efficiency
  • 80-µA Typical Operating Current (Into VDD Pin of Supply)
  • Low Shutdown Current (IQ < 2.5 µA)
  • 4-mm × 4-mm Thermally Enhanced WSON Package Option

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Description

The LM2623-Q1 is a high-efficiency, general-purpose, step-up DC-DC switching regulator for automotive systems. The device accepts an input voltage between 0.9 V and 14 V and converts it into a regulated output voltage between 1.24 V and 14 V.

In order to adapt to a number of applications, the LM2623-Q1 allows the designer to program the output voltage, the operating frequency (300 kHz to 2 MHz), and duty cycle (17% to 90%) to optimize performance. The selected values can be fixed or can vary with input voltage or input-to-output voltage ratio. The LM2623-Q1 uses a very simple, on/off regulation mode to produce good efficiency and stable operation over a wide operating range. The device normally regulates by skipping switching cycles when it reaches the regulation limit (pulse frequency modulation (PFM)).

Refer to Non-Linear Effect and Choosing the Correct C3 Capacitor to resolve any design challenges before board design is finalized.

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Technical documentation

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* Datasheet LM2623-Q1 Automotive Gated-Oscillator-Based DC-DC Boost Converter datasheet Oct. 05, 2016

Design & development

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Hardware development

EVALUATION BOARD Download
49
Description

General Purpose, Gated Oscillator Based, DC/DC Boost Converter

Features
  • Good efficiency Over a Very Wide Load Range
  • Very Low Output Voltage Ripple
  • Small, Mini-SO-8 Package (half the Footprint of Standard 8 pin SO Package)
  • 1.09 mm Package height
  • Up to 2 MHz Switching Frequency
  • .8V to 14V Operating Voltage
  • 1.1V Start-up Voltage
  • 1.24V - 14V Adjustable Output Voltage
  • Up to 2A Load (...)

Design tools & simulation

SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
CALCULATION TOOL Download
Fly-Buck and Flyback Topology Selector
FLYBUCK-FLYBACK-DESIGN-CALC This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
Features
  • Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
  • Capability to design up to 6 isolated outputs
  • Recommends ICs for desired application design
  • Incorporates loop compensation in designs
  • Compares efficiency, external component count and transformer currents for every topology (...)

CAD/CAE symbols

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WSON (NHL) 14 View options

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