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LM2653 - 1.5A High Efficiency Synchronous Switching Regulator

Description

The LM2653 switching regulator provides high efficient power conversion over a 100:1 load range (1.5A to 15 mA).

This feature makes the LM2653 an ideal fit in battery-powered applications.

Synchronous rectification is used to achieve up to 97% efficiency.

Features

  • include thermal shutdown, input undervoltage lockout, adjustable soft-start, cycle by cycle current limit, output overvoltage and undervoltage protections. n n n n n n n n n n n n 4V to 14V input voltage range 1.5V to 5.0V adjustable output voltage 0.1Ω Switch On Resistance 300 kHz fixed frequency internal oscillator 7 µA shutdown current Patented current sensing for current mode control Input undervoltage lockout Output overvoltage shutdown protection Output undervoltage shutdown protection Adj.

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Datasheet Details

Part number LM2653
Manufacturer National Semiconductor
File Size 243.99 KB
Description 1.5A High Efficiency Synchronous Switching Regulator
Datasheet download datasheet LM2653 Datasheet
Additional preview pages of the LM2653 datasheet.

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LM2653 1.5A High Efficiency Synchronous Switching Regulator November 1999 LM2653 1.5A High Efficiency Synchronous Switching Regulator General Description The LM2653 switching regulator provides high efficient power conversion over a 100:1 load range (1.5A to 15 mA). This feature makes the LM2653 an ideal fit in battery-powered applications. Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2653 enters a low power hysteretic or “sleep” mode to keep the efficiency high. In many applications, the efficiency still exceeds 80% at 15 mA load. A shutdown pin is available to disable the LM2653 and reduce the supply current to 7µA. All the power, control, and drive functions are integrated within the ICs.
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