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LM2623 Application Note

Part Series:LM2623 Series
Category:DC-DC Converters
Description:Conv DC-DC 0.8V to 14V Step Up Single-Out 1.24V to 14V 2A 8Pin VSSOP T/R
Document:LM2623AMM/NOPB Application Note (9 Pages)

LM2623 Application Note DC-DC Converters

9 Pages
TI
Conv DC-DC 0.8V to 14V Step Up Single-Out 1.24V to 14V 2A 8Pin VSSOP T/R
9 Pages
TI
LM2623 DC to DC Converter and Switching Regulator Chip 1.24VDC to 14VDC Output Evaluation Board
9 Pages
TI
Conv DC-DC 0.8V to 14V Step Up Single-Out 1.24V to 14V 2A 8Pin VSSOP T/R

LM2623AMM/NOPB - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Frequency
2 MHz
Number of Pins
8 Pin
Supply Voltage (DC)
14.0V (max)
Case/Package
VSSOP-8
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LM2623AMM/NOPB - TI Function Overview

The LM2623AMM/NOPB is a general-purpose gated-oscillator-based step-up DC-to-DC Boost Converter for battery-powered and low input voltage systems. It accepts an input voltage between 0.8 and 14V and converts it into a regulated output voltage between 1.24 and 14V. Efficiencies up to 90% are achievable with the LM2623. In order to adapt to a number of applications, the LM2623 allows the designer to vary the output voltage, the operating frequency (300kHz to 2MHz) and duty cycle (17 to 90%) to optimize the part"s performance. The selected values can be fixed or can vary with battery voltage or input to output voltage ratio. The LM2623 uses a very simple, on/off regulation mode to produce good efficiency and stable operation over a wide operating range. It normally regulates by skipping switching cycles when it reaches the regulation limit (pulse frequency modulation).
Good efficiency over a very wide load range
Very low output voltage ripple
1.1V Startup voltage
Up to 2A load current at low output voltage
0.17R Internal MOSFET
Up to 90% regulator efficiency
80µA Typical operating current (into VDD pin of supply)
<2.5µA Ensured supply current in shutdown
Green product and no Sb/Br
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