lm22673mrx-adj National Semiconductor Corporation, lm22673mrx-adj Datasheet - Page 4

• Manufacturer Part Number: lm22673mrx-adj
• Description: 3a Simple Switcher , Step-down Voltage Regulator With Adjustable Soft-start And Current Limit
• Manufacturer: National Semiconductor Corporation

www.national.com
LM22673-5.0
LM22673-ADJ
All Output Voltage Versions
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to GND
SS, IADJ Pin Voltage
SW to GND (Note 2)
Boot Pin Voltage
FB Pin Voltage
Power Dissipation
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
OFFMIN
V
CLADJ
I
DS(ON)
ONMIN
V
V
T
BIAS
θ
θ
I
I
I
f
ADJ
I
SS
CL
SD
FB
FB
Q
O
JA
JA
L
Parameter
Feedback Voltage
Feedback Voltage
Quiescent Current
Current Limit Adjust Voltage
Current Limit
Current Limit Adjust
Output Leakage Current
Switch On-Resistance
Oscillator Frequency
Minimum Off-time
Minimum On-time
Feedback Bias Current
Soft-start Current
Thermal Shutdown
Threshold
Thermal Resistance
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
V
IADJ Resistor = 56.2 kΩ
V
V
TO-263 THIN Package
PSOP-8 Package
V
EN Input = 0V
TJ Junction to ambient temperature
resistance (Note 6)
MR Package, Junction to ambient
temperature resistance (Note 7)
Internally Limited
IN
IN
FB
IN
SW
FB
Limits in standard type are for T
= 8V to 42V
= 4.7V to 42V
= 42V, SS Pin = 0V, V
= 5V
= 1.3V (ADJ Version Only)
= -1V
(Note 1)
-0.5V to 7V
-0.5V to 7V
-5V to V
V
SW
+ 7V
43V
IN
4
Supply Voltage (V
Junction Temperature Range
Junction Temperature
Soldering Information
ESD Rating (Note 3)
Storage Temperature Range
Operating Ratings
SW
Infrared (5 sec.)
Human Body Model
= 0V
A
= T
J
= 25°C only; limits in boldface type apply over the
J
= 25°C, and are provided for reference purposes
1.266/1.259
4.925/4.9
(Note 5)
3.4/3.35
0.65
Min
400
0.4
30
IN
)
(Note 4)
1.285
0.12
0.10
Typ
500
300
100
230
150
5.0
3.4
0.8
4.2
0.7
0.2
0.1
50
22
60
(Note 1)
1.304/1.311
5.075/5.1
0.16/0.22
0.16/0.20
(Note 5)
5.3/5.5
Max
-65°C to +150°C
600
-40°C to +125°C
0.9
70
6
1
2
3
4.5V to 42V
150°C
260°C
±2 kV
Units
°C/W
°C/W
kHz
mA
mA
µA
nA
µA
ns
ns
°C
Ω
V
V
V
A
A