LM2940CT-9.0 National Semiconductor, LM2940CT-9.0 Datasheet - Page 7

• Manufacturer Part Number: LM2940CT-9.0
• Description: IC,VOLT REGULATOR,FIXED,+9V,BIPOLAR,SIP,3PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM2940CT-9.0

• Rohs Compliant: NO

Thermal Resistance
Junction-to-Case
Thermal Resistance
Junction-to-Ambient
Long Term
Stability
Dropout Voltage
Short Circuit
Current
Maximum Line
Transient
Reverse Polarity
DC Input
Voltage
Reverse Polarity
Transient Input
Voltage
Electrical Characteristics
V
ture range of the indicated device. All other specifications apply for T
Thermal Performance
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions
but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics.
Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, T
ambient temperature, T
The value of θ
The effective value of θ
is specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal resistance and power dissipation for
the LLP package, refer to Application Note AN-1187. It is recommended that 6 vias be placed under the center pad to improve thermal performance.
Note 3: ESD rating is based on the human body model, 100 pF discharged through 1.5 kΩ.
Note 4: All limits are guaranteed at T
All limits at T
methods.
Note 5: All limits are guaranteed at T
All limits are 100% production tested and are used to calculate Outgoing Quality Levels.
Note 6: Output current will decrease with increasing temperature but will not drop below 1A at the maximum specified temperature.
IN
Parameter
= V
O
+ 5V, I
A
Output Voltage (V
JA
= T
(for devices in still air with no heatsink) is 60˚C/W for the TO-220 package, 80˚C/W for the TO-263 package, and 174˚C/W for the SOT-223 package.
J
= 25˚C are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control
O
A
JA
I
I
(Note 6)
R
LM2940, T ≤ 100 ms
LM2940/883, T ≤ 20 ms
LM2940C, T ≤ 1 ms
R
LM2940, LM2940/883
LM2940C
R
LM2940, T ≤ 100 ms
LM2940/883, T ≤ 20 ms
LM2940C, T ≤ 1 ms
= 1A, C
O
O
. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.
O
O
O
can be reduced by using a heatsink (see Application Hints for specific information on heatsinking). The value of θ
= 1A
= 100 mA
= 100Ω
= 100Ω
= 100Ω
Conditions
O
= 22 µF, unless otherwise specified. Boldface limits apply over the entire operating tempera-
A
A
O
= T
= T
)
3-Lead TO-220
3-Lead TO-263
3-Lead TO-220
3-Lead TO-263
8-Lead LLP (Note 2)
J
J
= 25˚C only (standard typeface) or over the entire operating temperature range of the indicated device (boldface type).
= 25˚C only (standard typeface) or over the entire operating temperature range of the indicated device (boldface type).
(Continued)
Typ
110
−30
−30
−75
−55
0.5
1.9
48
75
55
LM2940
(Note 4)
150/200
−15/−15
−50/−50
−45/−45
0.8/1.0
60/60
Limit
−15
1.6
45
12V
7
LM2940/833
(Note 5)
−15/−15
−45/−45
150/200
0.7/1.0
1.6/1.3
A
Limit
40/40
= T
J
= 25˚C.
4
4
60
80
35
J
, the junction-to-ambient thermal resistance, θ
Typ
110
−30
−55
0.5
1.9
60
55
LM2940
(Note 4)
−45/−45
150/200
0.8/1.0
Limit
−15
1.6
45
15V
LM2940/833
(Note 5)
−15/−15
−45/−45
150/200
0.7/1.0
1.6/1.3
JA
40/40
Limit
for the LLP package
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
www.national.com
JA
, and the
1000 Hr
mV
Units
V
A
V
V
V
mV/
MAX
MIN
MIN
MIN
MIN
MAX