ADP124ARHZ-2.7-R7 datasheet(16/20 Pages) AD

No de pièce	ADP124ARHZ-2.7-R7

Description	5.5 V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulators

PDF	20 Pages

Scroll/Zoom	100%

Fabricant	AD [Analog Devices]

Site Internet	http://www.analog.com

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16 / 20 page

ADP124/ADP125

Rev. 0 | Page 16 of

100

120

140

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

VIN – VOUT (V)

TJ MAX

ILOAD = 500mA

ILOAD = 400mA

ILOAD = 300mA

ILOAD = 200mA ILOAD = 100mA

ILOAD = 10mA

ILOAD = 1mA

Figure 40. Junction Temperature vs. Power Dissipation,

40 mm2 of PCB Copper at Board Temperature = 85°C

PRINTED CIRCUIT BOARD LAYOUT

CONSIDERATIONS

Heat dissipation from the package can be improved by increasing

the amount of copper attached to the pins of the ADP124/ADP125.

However, as shown in Table 6, a point of diminishing returns

eventually is reached, beyond which an increase in the copper

size does not yield significant heat dissipation benefits.

The input capacitor should be placed as close as possible to the

VIN and GND pins, and the output capacitor should be placed

as close as possible to the VOUT and GND pins. Use of 0402 or

0603 size capacitors and resistors achieves the smallest possible

footprint solution on boards where the area is limited.

Figure 41. Example ADP124 PCB Layout

Figure 42. Example ADP125 PCB Layout

ADP124ARHZ-2.7-R7 Fiches technique(PDF) 16 Page - Analog Devices