The LM26400Y device is a monolithic, two-output fixed-frequency PWM step-down DC-DC regulator, in a 16-pin WSON or thermally-enhanced HTSSOP package. With a minimum number of external components and internal loop compensation, the LM26400Y is easy to use.
The ability to drive 2-A loads with an internal 175-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in a high-power density design. The world class control circuitry allows for an ON-time as low as 40 ns, thus supporting high-frequency conversion over the entire input range of 3 V to 20 V and down to an output voltage of only 0.6 V. The LM26400Y utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of line and load conditions. Switching frequency is internally set to 500 kHz, optimal for a broad range of applications in terms of size versus thermal tradeoffs.
Given a nonsynchronous architecture, efficiencies above 90% are easy to achieve. External shutdown is included, enabling separate turnon and turnoff of the two channels. Additional features include programmable soft-start circuitry to reduce inrush current, pulse-by-pulse current limit and frequency foldback, integrated bootstrap structure, and thermal shutdown.
| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator datasheet (Rev. D) | PDF | HTML | 13/10/2015 | |
| Guía de selección | Power Management Guide 2018 (Rev. R) | 25/06/2018 | |||
| Informe | Powering Multi-Rail Systems Using the LM26400Y Regulator | 28/01/2008 |
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| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| WSON (NHQ) | 16 | Ultra Librarian |
| HTSSOP (PWP) | 16 | Ultra Librarian |
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