lm22680mrx-adj National Semiconductor Corporation, lm22680mrx-adj Datasheet - Page 3

• Manufacturer Part Number: lm22680mrx-adj
• Description: 2a Simple Switcher ?step-down Voltage Regulator With Features
• Manufacturer: National Semiconductor Corporation

VIN to GND
EN Pin Voltage
SS, RT/SYNC Pin Voltage
SW to GND (Note 2)
BOOT Pin Voltage
FB Pin Voltage
Power Dissipation
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
junction temperature (T
correlation. Typical values represent the most likely parametric norm at T
only. Unless otherwise specified: V
Symbol
R
T
T
I
F
V
OFFMIN
STDBY
I
DS(ON)
ONMIN
V
V
T
BIAS
SYNC
SYNC
θ
I
I
I
I
f
CL
I
EN
SS
SD
FB
Q
O
EN
JA
L
Parameter
Feedback Voltage
Quiescent Current
Standby Quiescent Current
Current Limit
Output Leakage Current
Switch On-Resistance
Oscillator Frequency
Minimum Off-time
Minimum On-time
Feedback Bias Current
Enable Threshold Voltage
Enable Input Current
Synchronization Frequency
Synchronization Threshold
Voltage
Soft-Start Current
Thermal Shutdown
Threshold
Thermal Resistance
J
) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design, or statistical
IN
= 12V.
Conditions
V
V
EN Pin = 0V
V
V
V
EN Input = 0V
V
MR Package, Junction to ambient
temperature resistance (Note 6)
Internally Limited
IN
FB
IN
SW
FB
SYNC
Limits in standard type are for T
= 4.7V to 42V
= 42V, EN Pin = 0V, V
= 5V
= 1.3V
= -1V
(Note 1)
-0.5V to 6V
-0.5V to 7V
-0.5V to 7V
= 3.5V, 50% duty-cycle
-5V to V
V
SW
+ 7V
43V
IN
3
Junction Temperature
Soldering Information
ESD Rating (Note 3)
Storage Temperature Range
Supply Voltage (V
Junction Temperature Range
Operating Ratings
SW
Infrared (5 sec.)
Human Body Model
= 0V
A
= T
J
J
= 25°C only; limits in boldface type apply over the
= 25°C, and are provided for reference purposes
1.266/1.259
(Note 5)
2.32
Min
400
1.3
30
IN
)
(Note 4)
1.285
1.75
Typ
500
300
100
230
150
3.4
2.8
0.2
0.1
0.2
1.6
25
50
60
6
1
(Note 1)
1.304/1.311
0.24/0.32
(Note 5)
Max
-65°C to +150°C
-40°C to +125°C
600
3.4
1.9
40
70
6
2
3
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4.5V to 42V
150°C
260°C
±2 kV
Units
°C/W
MHz
kHz
mA
µA
µA
µA
nA
µA
µA
°C
ns
ns
Ω
V
A
V
V