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LM20242MHE Datasheet(HTML) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM20242MHE
Description  36V, 2A PowerWise┬« Adjustable Frequency Synchronous Buck Regulator
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM20242MHE Datasheet(HTML) 4 Page - National Semiconductor (TI)

 
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Symbol
Parameter
Conditions
Min
Typ
Max
Units
Current Limit
I
LIM
Cycle By Cycle Current Limit
3.1
3.7
4.65
A
T
ILIM
Cycle By Cycle Current Limit Delay
150
ns
Enable
V
EN(RISING)
EN Pin Rising Threshold
1.2
1.25
1.3
V
V
EN(HYS)
EN Pin Hysteresis
50
mV
I
EN
EN Source Current
V
EN = 0V, VVIN = 12V
2
┬ÁA
Thermal Shutdown
T
SD
Thermal Shutdown
170
┬░C
T
SD(HYS)
Thermal Shutdown Hysteresis
20
┬░C
Thermal Resistance
╬Ş
JC
Junction to Case
5.6
┬░C/W
╬Ş
JA
Junction to Ambient
0 LFM airflow
30
┬░C/W
Note 1:
Absolute Maximum Ratings indicate limits beyond witch damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2:
The human body model is a 100 pF capacitor discharged through a 1.5 k
ÔäŽ resistor to each pin.
Note 3:
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 NationalÔÇÖs Average Outgoing Quality Level (AOQL).
Typical Performance Characteristics Unless otherwise specified: T
J = 25┬░C, VVIN = 12V
Efficiency vs. Load Current
f
SW = 350 kHz
30031403
Efficiency vs. Load Current
f
SW = 500 kHz
30031404
www.national.com
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