Data Sheet

ADPL42010A

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Rev. 0

22 of 28

Figure 33. Reverse Output Current

Thermal Considerations

The power handling capability of the device is limited by the maximum rated junction temperature (125°C). The

power dissipated by the device is made up of two components:

1. Output current multiplied by the input/output voltage differential: (IOUT) × (VIN – VOUT).

2. And GND pin current multiplied by the input voltage: (IGND) × (VIN).

For the GND pin current, see Figure 12. Power dissipation is equal to the sum of the two components listed above.

The ADPL42010A has an internal thermal limiting designed to protect the device during overload conditions. For

continuous normal conditions, the maximum junction temperature rating of 125°C must not be exceeded.

OUTPUT VOLTAGE (V)

0

3.0

4.0

5.0

8

2.0

1.0

2.5

3.5

4.5

1.5

0.5

0

2

1

3

4

6

9

7

5

10

ADPL42010A

VOUT = VADJ

TJ = 25°C

VIN = 0V

CURRENT FLOWS

INTO OUTPUT PIN

ADPL42010A-2.5

VOUT = VFB

ADPL42010A-3.3

VOUT = VFB

ADPL42010A-1.8

VOUT = VFB

ADPL42010A-1.5

VOUT = VFB