LM29 National Semiconductor, LM29 Datasheet - Page 3

• Manufacturer Part Number: LM29
• Description: LM2900/LM3900/LM3301 Quad Amplifiers
• Manufacturer: National Semiconductor

Current Limit
Dropout Voltage
Output Voltage Under
Transient Conditions
LM2930-8.0 (V
Electrical Characteristics
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
Note 2: Thermal resistance without a heat sink for junction to case temperature is 3˚C/W and for case to ambient temperature is 50˚C/W for the TO-220, 73˚C/W
for the TO-263. If the TO-263 package is used, the thermal resistance can be reduced by increasing the P.C. board copper area thermally connected to the package.
Using 0.5 square inches of copper area,
is 32˚C/W.
Note 3: All characteristics are measured with a capacitor across the input of 0.1 µF and a capacitor across the output of 10 µF. All characteristics except noise voltage
and ripple rejection ratio are measured using pulse techniques (t
taken into account separately.
Note 4: Guaranteed and 100% production tested.
Note 5: Guaranteed (but not 100% production tested) over the operating temperature and input current ranges. These limits are not used to calculate outgoing qual-
ity levels.
Note 6: To ensure constant junction temperature, low duty cycle pulse testing is used.
Typical Application
*Required if regulator is located far from power supply filter.
*
regulator. This capacitor must be rated over the same operating temperature range as the regulator. The equivalent series resistance (ESR) of this capacitor
should be less than 1
Typical Performance Characteristics
Output Impedance
*
C
OUT
Parameter
must be at least 10 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to the
IN
= 14V, I
over the expected operating temperature range.
O
= 150 mA, T
I
−12V V
O
= 150 mA
DS005539-11
JA
IN
is 50˚C/W; with 1 square inch of copper area,
j
= 25˚C (Note 6), C2 = 10 µF, unless otherwise specified)
40V, R
Conditions
(Note 3) (Continued)
Overvoltage Supply Current
L
= 100
W
10 ms, duty cycle 5%). Output voltage changes due to changes in internal temperature must be
3
JA
0.32
Typ
400
DS005539-12
is 37˚C/W; and with 1.6 or more square inches of copper area,
(Note 4)
Tested
DS005539-5
Limit
−0.3
700
150
0.6
8.8
Reverse Supply Current
(Note 5)
Design
Limit
www.national.com
mA
mA
V
V
V
DS005539-13
Unit
MAX
MAX
MIN
MAX
MIN
JA