LM2674N-5.0 National Semiconductor, LM2674N-5.0 Datasheet - Page 3

• Manufacturer Part Number: LM2674N-5.0
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2674N-5.0

• Input Voltage: 40V
• Output Current: 500mA
• Output Voltage: 5V
• No. Of Pins: 8
• Mounting Type: Through Hole
• Voltage Regulator Type: Switching
• Output Current Max: 500mA
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Symbol
DEVICE PARAMETERS
I
I
I
I
R
f
D
I
V
I
Q
STBY
CL
L
O
BIAS
S/D
JA
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion, and I
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but device parameter specifications may not be guaranteed under these conditions. 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
Note 3: External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator per-
formance. When the LM2674 is used as shown in Figures 2, 3 test circuits, system performance will be as specified by the system parameters section of the Electrical
Characteristics.
Note 4: Typical numbers are at 25˚C and represent the most likely norm.
Note 5: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% pro-
duction tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to cal-
culate Average Outgoing Quality Level (AOQL).
Note 6: Junction to ambient thermal resistance with approximately 1 square inch of printed circuit board copper surrounding the leads. Additional copper area will
lower thermal resistance further. See Application Information section in the application note accompanying this datasheet and the thermal model in LM267X Made
Simple software.
All Output Voltage Versions
Electrical Characteristics
S/D
DS(ON)
LOAD
Quiescent Current
Standby Quiescent
Current
Current Limit
Output Leakage Current
Switch On-Resistance
Oscillator Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Feedback Bias
Current
ON/OFF Pin
Voltage Thesholds
ON/OFF Pin Current
Thermal Resistance
= 100 mA.
Parameters
V
For 3.3V, 5.0V, and ADJ Versions
V
For 12V Versions
ON/OFF Pin = 0V
V
V
V
I
Measured at Switch Pin
V
ADJ Version Only
ON/OFF Pin = 0V
N Package, Junction to Ambient (Note 6)
M Package, Junction to Ambient (Note 6)
SWITCH
FEEDBACK
FEEDBACK
IN
SWITCH
SWITCH
FEEDBACK
IN
= 40V, ON/OFF Pin = 0V
= 12V for the 3.3V, 5V, and Adjustable versions and V
J
= 500 mA
= 0V
= −1V, ON/OFF Pin = 0V
= 25˚C, and those with bold type face apply over full Operating Tempera-
= 8V
= 15V
= 1.3V
Conditions
3
resistor into each pin.
0.25
Typ
260
105
2.5
2.5
0.8
1.4
50
95
85
20
95
1
6
0
0.62/0.575
Min
225
0.8
7
IN
= 24V for the 12V ver-
0.40/0.60
100/150
1.2/1.25
Max
275
3.6
2.0
25
15
37
www.national.com
Units
˚C/W
kHz
mA
mA
mA
µA
µA
nA
µA
%
%
A
V