MC34712 Ver la hoja de datos (PDF) - Freescale Semiconductor

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componentes Descripción

Fabricante

MC34712

3.0 A 1.0 MHz Fully Integrated DDR Switch-Mode Power Supply

Freescale Semiconductor 

ELECTRICAL CHARACTERISTICS

MAXIMUM RATINGS

Table 2. Maximum Ratings (continued)

All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or

permanent damage to the device.

Ratings

Symbol

Value

Unit

THERMAL RESISTANCE (7)

Thermal Resistance, Junction to Ambient, Single-layer Board (1s)(8)

Thermal Resistance, Junction to Ambient, Four-layer Board (2s2p)(9)

Thermal Resistance, Junction to Board (10)

RθJA

RθJMA

RθJB

139

°C/W

43

°C/W

22

°C/W

Notes

7. The PVIN, SW, and GND pins comprise the main heat conduction paths.

8. Per SEMI G38-87 and JEDEC JESD51-2 with the single-layer board (JESD51-3) horizontal.

9. Per JEDEC JESD51-6 with the board (JESD51-7) horizontal. There are no thermal vias connecting the package to the two planes in the

board.

10. Thermal resistance between the device and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on the top

surface of the board near the package.

34712

6

Analog Integrated Circuit Device Data

Freescale Semiconductor

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