LM2622_04 NSC [National Semiconductor], LM2622_04 Datasheet - Page 14

• Manufacturer Part Number: LM2622_04
• Description: 600kHz/1.3MHz Step-up PWM DC/DC Converter
• Manufacturer: NSC [National Semiconductor]

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Application Information
POWER DISSIPATION
The output power of the LM2622 is limited by its maximum
power dissipation. The maximum power dissipation is deter-
mined by the formula
where T
(125˚C), T
mal resistance of the package. θ
layout of the board as shown below.
jmax
A
is the ambient temperature, and θ
is the maximum specidfied junction temperature
P
D
= (T
jmax
- T
A
JA
)/θ
JA
is dependant on the
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(Continued)
JA
FIGURE 5. 1.3 MHz operation
is the ther-
14
1.3 MHZ OPERATION
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