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National Semiconductor LM2672 Simple Switcher Power Converter Datasheet
The LM2672 series are monolithic step‑down (buck) regulators that deliver up to 1 A load current with excellent line and load regulation. They operate at a fixed 260 kHz switching frequency, provide over 90 % efficiency, and require only five external components.
The device is offered in SO‑8, 8‑pin DIP and 16‑lead LLP packages, with fixed output versions of 3.3 V, 5.0 V and 12 V as well as an adjustable version. Typical applications include high‑efficiency step‑down converters and pre‑regulators for linear regulators.
National Semiconductor LM2672 specifications
| Switching frequency | 260 kHz |
|---|---|
| Maximum efficiency | up to 96 % |
| Input voltage range | 8 V to 40 V |
| Output current | 1 A |
| Fixed output voltages | 3.3 V, 5.0 V, 12 V, adjustable |
| Quiescent current (typical) | 2.5 mA |
Source: National Semiconductor LM2672 Simple Switcher Power Converter Datasheet
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Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the switching frequency of the LM2672?
The LM2672 operates at a fixed switching frequency of 260 kHz.
From: National Semiconductor LM2672 Simple Switcher Power Converter Datasheet
What is the maximum efficiency of the LM2672?
The device can achieve up to 96 % efficiency.
From: National Semiconductor LM2672 Simple Switcher Power Converter Datasheet
What is the switching frequency of the LM2672?
The LM2672 operates at a fixed switching frequency of 260 kHz.
From: National Semiconductor LM2672 Simple Switcher Power Converter Datasheet
What input voltage range can the LM2672 handle?
The device is rated for an operating input voltage from 6.5 V up to 40 V (absolute maximum 45 V).
From: National Semiconductor LM2672 Simple Switcher Power Converter Datasheet