LM22679TJ-5.0/NOPB National Semiconductor, LM22679TJ-5.0/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM22679TJ-5.0/NOPB
• Description: IC REG SWITCH BUCK 5A 5V TO263-7
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM22679TJ-5.0/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 5A
• Frequency - Switching: 500kHz
• Voltage - Input: 4.5 ~ 42 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-7 Thin
• For Use With: 551600233-001 - WEBENCH BUILD IT LM2267X TO-263LM22679EVAL - BOARD EVALUATION FOR LM22679
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: LM22679TJ-5.0

LM22679-5.0
LM22679-ADJ
All Output Voltage Versions
VIN to GND
SS, IADJ Pin Voltage
SW to GND
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
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
20 to 30°C/W depending on the amount of PCB copper dedicated to heat transfer. See application note AN-1797 for more information.
Symbol
R
T
T
I
OFFMIN
V
CLADJ
I
DS(ON)
ONMIN
V
V
T
BIAS
θ
I
I
I
f
ADJ
CL
I
SS
SD
FB
FB
Q
O
JA
L
(Note
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
JA
2)
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
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
V
Junction to ambient temperature
resistance
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
-0.5V to 7V
-0.5V to 7V
-5V to V
V
SW
1)
(Note
+ 7V
43V
IN
6)
3
Junction Temperature
Soldering Information
ESD Rating
Storage Temperature Range
Supply Voltage (V
Junction 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
(Note
1.266/1.259
4.925/4.9
(Note
6.0/5.75
0.65
Min
400
100
0.4
30
IN
3)
)
5)
(Note
1.285
0.10
Typ
500
200
100
230
150
5.0
3.4
0.8
7.1
0.7
32
31
50
22
(Note
4)
1)
1.304/1.311
JA
5.075/5.1
(Note
8.4/8.75
0.14/0.2
value can range from
Max
-65°C to +150°C
-40°C to +125°C
600
300
0.9
60
75
70
6
1
5)
www.national.com
4.5V to 42V
150°C
260°C
±2 kV
Units
°C/W
kHz
mA
µA
µA
nA
µA
°C
ns
ns
Ω
V
V
V
A
A