LM376N [NSC]
IC VREG 5 V-37 V ADJUSTABLE POSITIVE REGULATOR, PDIP8, DIP-8, Adjustable Positive Single Output Standard Regulator;
| 型号： | LM376N |
| 厂家： | 
National Semiconductor |
| 描述： | IC VREG 5 V-37 V ADJUSTABLE POSITIVE REGULATOR, PDIP8, DIP-8, Adjustable Positive Single Output Standard Regulator 稳压器 |
| 文件： | 总8页 (文件大小：151K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
January 1995
LM105/LM205/LM305/LM305A,
LM376 Voltage Regulators
General Description
The LM105 series are positive voltage regulators similar to
the LM100, except that an extra gain stage has been added
for improved regulation. A redesign of the biasing circuitry
removes any minimum load current requirement and at the
same time reduces standby current drain, permitting higher
voltage operation. They are direct, plug-in replacements for
the LM100 in both linear and switching regulator circuits
with output voltages greater than 4.5V. Important character-
istics of the circuits are:
Y
DC line regulation guaranteed at 0.03%/V
Ripple rejection on 0.01%V
Y
Y
45 mA output current without external pass transistor
(LM305A)
Like the LM100, they also feature fast response to both load
and line transients, freedom from oscillations with varying
resistive and reactive loads and the ability to start reliably on
any load within rating. The circuits are built on a single sili-
con chip and are supplied in a TO-99 metal can.
Y
Output voltage adjustable from 4.5V to 40V
s
125 C, and the LM305/LM305A is specified for 0 C
s
b
The LM105 is specified for operation for 55 C
a
s
T
A
s
§
Y
Output currents in excess of 10A possible by adding
external transistors
T
A
§
70 C.
§
a
§
Y
Load regulation better than 0.1%, full load with current
limiting
Schematic and Connection Diagrams
Metal Can Package
TL/H/7755–3
Top View
Order Number LM105H, LM105H/883,
Ý
SMD 5962-8958801, LM305H or LM305AH
See NS Package Number H08C
TL/H/7755–1
C
1995 National Semiconductor Corporation
TL/H/7755
RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 5)
LM105
50V
LM305
40V
LM305A
50V
Input Voltage
Input-Output Differential
40V
40V
40V
Power Dissipation (Note 1)
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 seconds)
800 mW
a
800 mW
a
800 mW
a
0 C to 70 C
b
b
b
b
55 C to 125 C
§
0 C to 70 C
§
§
§
65 C to 150 C
§
65 C to 150 C
§
a
a
300 C
b
a
300 C
65 C to 150 C
§
§
§
§
§
§
300 C
§
§
§
Electrical Characteristics (Note 2)
LM105
Typ
LM305
Typ
LM305A
Typ
Parameter
Conditions
Units
Min
8.5
4.5
Max Min
Max Min
Max
50
Input Voltage Range
Output Voltage Range
50
40
8.5
4.5
40
30
8.5
4.5
V
V
40
Input-Output Voltage
Differential
3.0
30
3.0
30
3.0
30
V
e
e
e
e
e
e
Load Regulation
(Note 3)
R
SC
R
SC
R
SC
10X, T
10X, T
10X, T
25 C
§
0.02
0.03
0.03
0.05
0.1
0.02
0.03
0.03
0.05
0.1
%
%
%
A
A
A
T
T
A(MAX)
A(MIN)
0.1
0.1
s
s
s
s
12 mA
O
0
I
12 mA
0
I
O
e
e
e
e
R
SC
R
SC
R
SC
0X, T
25 C
§
0.02
0.03
0.03
0.2
0.4
0.4
%
%
%
A
e
e
0X, T
70 C
§
A
0X, T
0 C
§
A
s
s
45 mA
0
I
O
e
Line Regulation
T
25 C
§
%/V
%/V
A
s
s
a
s
t
0 C
§
T
A
70 C
§
b
b
e
e
V
V
OUT
V
OUT
5V, T
25 C
§
0.025 0.06
0.015 0.03
0.025 0.06
0.015 0.03
0.025 0.06 %/V
0.015 0.03 %/V
IN
A
A
V
5V, T
25 C
§
IN
s
s
T
Temperature Stability
T
T
A
0.3
1.0
0.3
1.0
0.3
1.0
%
A(MIN)
A(MAX)
2
Electrical Characteristics (Note 2) (Continued)
LM105
Typ
LM305
Typ
LM305A
Typ
Parameter
Conditions
Units
Min
Max Min
Max Min
Max
Feedback Sense Voltage
Output Noise Voltage
1.63
1.7
1.81 1.63
1.7
1.81 1.55
1.7
1.85
V
s
e
e
s
10 kHz
10 Hz
f
C
C
V
0
0.005
0.002
0.005
0.002
0.005
0.002
%
%
REF
REF
0.1 mF
e
e
25 C
Standby Current Drain
30V, T
mA
mA
mA
§
IN
IN
IN
A
e
V
V
T
40V
50V
0.8
2.0
e
0.8
2.0
0.8
2.0
e
e
SC
Current Limit
25 C, R
§
10X,
A
225
300
375 225
300
375 225
300
375
mV
e
Sense Voltage
V
OUT
0V, (Note 4)
Long Term Stability
Ripple Rejection
0.1
0.1
0.1
%
e
e
C
REF
10 mF, f
120 Hz
0.003
0.003
0.003
%/V
i
i
i
TO-99 Board Mount
in Still Air
JA
JA
JC
230
230
230
C/W
§
TO-99 Board Mount in
400 LF/Min Air Flow
92
25
92
25
92
25
C/W
§
TO-99
C/W
§
Note 1: The maximum junction temperature of the LM105 and LM305A is 150 C, and the LM305 is 85 C. For operation at elevated temperatures, devices in the
§
§
H08C package must be derated based on a thermal resistance of 168 C/W junction to ambient, or 25 C/W junction to case. Peak dissipations to 1W are allowable
§
§
providing the dissipation rating is not exceeded with the power average over a five second interval for the LM105 and averaged over a two second interval for the
LM305.
Note 2: Unless otherwise specified, these specifications apply for temperatures within the operating temperature range, for input and output voltages within the
range given, and for a divider impedance seen by the feedback terminal of 2 kX. Load and line regulation specifications are for a constant junction temperature.
Temperature drift effects must be taken into account separately when the unit is operating under conditions of high dissipation.
Note 3: The output currents given, as well as the load regulation, can be increased by the addition of external transistors. The improvement factor will be roughly
equal to the composite current gain of the added transistors.
Note 4: With no external pass transistor.
Note 5: Refer to RETS105X Drawing for military specifications for the LM105.
3
Typical Performance Characteristics LM105/LM305/LM305A
Current Limiting
Characteristics
Load Regulation
Load Regulation
nce
TL/H/7755–6
4
Typical Applications
10A Regulator with Foldback Current Limiting
TL/H/7755–4
1.0A Regulator with Protective Diodes
orted input or inductive leads on
ut voltage reversal.
put voltage reversal.
TL/H/7755–5
Linear Regulator with Foldback Current Limiting
Current Regulator
TL/H/7755–8
TL/H/7755–9
5
Typical Applications (Continued)
Shunt Regulator
TL/H/7755–10
Switching Regulator
Basic Positive Regulator with Current Limiting
.
2 on Arnold
262123-2
permally
core.
TL/H/7755–11
TL/H/7755–12
1.0A Regulator with Protective Diodes
horted
loads on
y.
nput
utput
TL/H/7755–13
Linear Regulator with Foldback Current Limiting
TL/H/7755–14
6
7
Physical Dimensions inches (millimeters)
Metal Can Package (H)
Ý
Order Number LM105H, LM105H/883, SMD 5962-8958801, LM305H or LM305AH
NS Package Number H08C
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