lm22678tje-adj National Semiconductor Corporation, lm22678tje-adj Datasheet - Page 4

• Manufacturer Part Number: lm22678tje-adj
• Description: 5a Simple Switcher , Step-down Voltage Regulator With Precision Enable
• Manufacturer: National Semiconductor Corporation

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability
and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in
the recommended Operating Ratings is not implied. The recommended Operating Ratings indicate conditions at which the device is functional and should not be
operated beyond such conditions.
Note 2: The absolute maximum specification of the ‘SW to GND’ applies to DC voltage. An extended negative voltage limit of -10V applies to a pulse of up to 50
ns.
Note 3: ESD was applied using the human body model, a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Note 4: Typical values represent most likely parametric norms at the conditions specified and are not guaranteed.
Note 5: Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical
Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 6: The value of θ
for the TO-263 THIN (TJ) package of 22°C/W is valid if package is mounted to 1 square inch of copper. The θ
value can range from
JA
JA
20 to 30°C/W depending on the amount of PCB copper dedicated to heat transfer. See application note AN-1797 for more information.
Typical Performance Characteristics
Unless otherwise specified the following conditions apply: Vin =
12V, T
= 25°C.
J
Efficiency vs I
and V
Normalized Switching Frequency vs Temperature
OUT
IN
V
= 3.3V
OUT
30076104
30076127
Current Limit vs Temperature
Normalized R
vs Temperature
DS(ON)
30076108
30076103
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