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參數(shù)資料
| 型號(hào)： | LM2930 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Octal Buffers/Drivers With 3-State Outputs 20-TSSOP -40 to 85 |
| 中文描述： | 三端穩(wěn)壓器正 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大小： | 251K |
| 代理商： | LM2930 |
Electrical Characteristics
(Note 3) (Continued)
LM2930-8.0 (V
IN
=14V, I
O
=150 mA, T
j
=25C (Note 6), C2=10 μF, unless otherwise specified)
Tested
Limit
(Note 4)
700
150
0.6
8.8
0.3
Design
Limit
(Note 5)
Parameter
Conditions
Typ
Unit
Current Limit
400
mA
MAX
mA
MIN
V
MAX
V
MAX
V
MIN
Dropout Voltage
Output Voltage Under
Transient Conditions
I
O
=150 mA
12V
≤
V
IN
≤
40V, R
L
=100
0.32
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 andAC 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 3C/W and for case to ambient temperature is 50C/W for the TO-220, 73C/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,
θ
JA
is 50C/W; with 1 square inch of copper area,
θ
JA
is 37C/W; and with 1.6 or more square inches of copper area,
θ
JA
is 32C/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
W
≤
10 ms, duty cycle
≤
5%). Output voltage changes due to changes in internal temperature must be
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
Typical Performance Characteristics
DS005539-5
*Required if regulator is located far from power supply filter.
*
C
OUT
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
*
over the expected operating temperature range.
Output Impedance
DS005539-11
Overvoltage Supply Current
DS005539-12
Reverse Supply Current
DS005539-13
3
www.national.com
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