RT9199GSP Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza

componentes Descripción

Fabricante

RT9199GSP

Cost-Effective, 2A Peak Sink/Source Bus Termination Regulator

Richtek Technology 

RT9199

As shown in Figure 12, the amount of copper area to which the SOP-8 (Exposed Pad) is mounted affects thermal

performance. When mounted to the standard SOP-8 (Exposed Pad) pad of 2 oz. copper (Figure 12.a), θJA is 86°C/W.

Adding copper area of pad under the SOP-8 (Exposed Pad) (Figure 12.b) reduces the θJA to 73°C/W. Even further,

increasing the copper area of pad to 70mm2 (Figure 12.d) reduces the θJA to 65°C/W.

(a) Copper Area = 10mm2, θJA = 86°C/W

(b) Copper Area = 30mm2, θJA = 73°C/W

(c) Copper Area = 50mm2, θJA = 68°C/W

(d) Copper Area = 70mm2, θJA = 65°C/W

Figure 12. Thermal Resistance vs. Copper Area Layout Thermal Design

DS9199-07 September 2007

www.richtek.com

11

Share Link: