LM2676EP Enhanced Plastic
All Output Voltage Versions
Electrical Characteristics
Limits appearing in
bold type face
apply over the entire junction temperature range of operation, −40°C to 125°C.
Specifications appearing in normal type apply for T
A
= T
J
= 25°C. Unless otherwise specified V
IN
=12V for the 3.3V, 5V and Ad-
justable versions and V
IN
=24V for the 12V version.
Symbol
I
Q
Parameter
Quiescent Current V
FEEDBACK
= 8V
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK
= 15V
For 12V Versions
I
STBY
I
CL
I
L
Standby Quiescent ON/OFF Pin = 0V
Current
Current Limit
Output Leakage
Current
Switch On-
Resistance
Oscillator
Frequency
Duty Cycle
Feedback Bias
Current
ON/OFF
Threshold Voltage
ON/OFF Input
Current
Thermal
Resistance
ON/OFF Input = 0V
T Package, Junction to Ambient
T Package, Junction to Ambient
T Package, Junction to Case
S Package, Junction to Ambient
S Package, Junction to Ambient
S Package, Junction to Ambient
S Package, Junction to Case
SD Package, Junction to Ambient
SD Package, Junction to Ambient
Note 4:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings indicate conditions under which of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test condition, see the electrical
Characteristics tables.
Note 5:
ESD was applied using the human-body model, a 100pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Note 6:
Typical values are determined with T
A
= T
J
= 25°C and represent the most likely norm.
Conditions
Typ
4.2
Min
Max
6
Units
mA
DEVICE PARAMETERS
50
4.5
3.8/3.6
100/150
5.25/5.4
200
15
0.17/0.29
225
280
μA
A
μA
mA
Ω
kHz
%
%
nA
V
IN
= 40V, ON/OFF Pin = 0V
V
SWITCH
= 0V
V
SWITCH
= −1V
I
SWITCH
= 3A
Measured at Switch Pin
Maximum Duty Cycle
Minimum Duty Cycle
V
FEEDBACK
= 1.3V
ADJ Version Only
16
0.15
260
91
0
85
R
DS(ON)
f
O
D
I
BIAS
V
ON/OFF
I
ON/OFF
θ
JA
θ
JA
θ
JC
θ
JA
θ
JA
θ
JA
θ
JC
θ
JA
θ
JA
1.4
20
65
45
2
56
35
26
2
55
29
0.8
2.0
45
V
μA
°C/W
++
°C/W
www.national.com
200996 Version 2 Revision 3
4
Print Date/Time: 2011/03/24 16:39:24
TI [ TEXAS INSTRUMENTS ]
