LM1085-12-220M [SEME-LAB]
LOW DROPOUT 3 AMP POSITIVE;
| 型号： | LM1085-12-220M |
| 厂家： | 
SEME LAB |
| 描述： | LOW DROPOUT 3 AMP POSITIVE |
| 文件： | 总3页 (文件大小：35K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM1085–220M–05
LM1085–05–220M
LM1085–12–220M
MILITARY VERSION
LOW DROPOUT
3 AMP POSITIVE
VOLTAGE REGULATOR
TO–220 Isolated Metal Package
4.70
5.00
10.41
10.67
0.70
0.90
FEATURES
3.56
3.81
Dia.
• Low Dropout Performance
• Fixed or Adjustable Voltages
• Fixed Output Voltages of 5V & 12V
• Output Current 3A
1 2 3
• Line Regulation 0.015% / V Typical.
• Load Regulation 0.1% Typical.
• Military Temperature Range (–55 to +150°C)
0.89
1.14
2.54
BSC
2.65
2.75
BLOCK DIAGRAM
VIN
Pinouts
Pin
1
Fixed
Adjustable
ADJUST
OUTPUT
INPUT
GROUND
OUTPUT
INPUT
2
3
Case is ISOLATED
THERMAL
LIMIT
Ordering Information
LM1085–220M
Positive Adjustable Regulator
Fixed +5V Regulator
LM1085–05–220M
LM1085–12–220M
Fixed +12V Regulator
VADJ
VOUT
ABSOLUTE MAXIMUM RATINGS (T
= 25°C unless otherwise stated)
case
V
V
P
V
Input Voltage
5V, 12V
30V
35V
IN
I-O
D
Input–Output Differential Voltage
Power Dissipation
Adjustable
Internally limited
Operating Input Voltage
Adjustable
5 Volt
12 Volt
25V
20V
25V
IN
T
Operating Junction Temperature Range
Control
Power
–55 to 150°C
–55 to 200°C
J
T
T
Storage Temperature Range
Lead Temperature (for 10 sec.)
–65 to 150°C
300°C
STG
LEAD
* Although the devices’ maximum operating voltage is limited (20V for the 5V device, and 25V for the 12V and adjustable devices) the devices are
guaranteed to withstand transient input voltages up to 30V. For input voltages greater than the maximum operating input voltage, some degradation of
specifications will occur. For 5V and 12V devices operating at input-output voltage differentials >15V, a minimum external load of 5mA is required to
maintain regulation.
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
Prelim. 10/95
E-mail: sales@semelab.co.uk
Website: http://www.semelab.co.uk
LM1085–220M–05
LM1085–05–220M
LM1085–12–220M
MILITARY VERSION
DESCRIPTION
The LM1085 is designed to provide 3A with higher efficiency than currently available devices. All internal circuitry is
designed to operate down to 1V input to output differential and the dropout voltage is fully specified as a function of load
current. Dropout is guaranteed at a maximum of 1.5V at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference output voltage to 1%. Current limit is also trimmed, minimising the stress on both
the regulator and power source circuitry under overload conditions.
The LM1085 is pin compatible with older 3 terminal adjustable regulators. A 10 F output capacitor is required on these
new devices; however, this is usually included in most regulator designs.
Unlike PNP regulators, where up to 10% of the output current is wasted as quiescent current, the LM1085 quiescent
current flows into the load, increasing efficiency.
ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise stated)
Output
Parameter
Voltage Test Conditions
Min. Typ. Max.
Unit
VIN = 6.5 to 20V
IO = 0 to 3A
IO = 0 to 3A
5
4.90
11.76
1.225
5
5.10
12.24
1.270
TJ = –55 to 150°C
VO
Output Voltage
VIN = 13.5V to 25V
12
12
V
TJ = –55 to 150°C
VIN – VOUT = 1.5 to 15V IO = 10mA to 3A
TJ = –55 to 150°C
VREF
Reference Voltage
Line Regulation
ADJ.
5
1.25
VIN = 6.5 to 20V
0.5
1
10
10
25
25
0.2
0.2
20
35
36
72
0.3
0.4
IO = 0
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
mV
%
VIN = 13.5 to 25V
IO = 0
1
REG(LINE)
12
2
VIN – VOUT = 1.5 to 15V
ILOAD = 10mA
VIN = 8V
0.015
0.035
5
ADJ.
5
IO = 0 to 3A
VIN = 15V
10
mV
%
12
REG(LOAD) Load Regulation
See notes 1,2
12
IO = 0 to 3A
VIN – VOUT = 3V
IO = 10mA to 3A
VOUT = 50mV
IOUT = 3A
24
0.1
0.2
ADJ.
5
1.3
1.3
1.3
1.5
1.5
1.5
VOUT = 120mV
IOUT = 3A
VD
Dropout Voltage
See note 3
12
V
VREF = 1%
ADJ.
IOUT = 3A
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Prelim. 10/95
LM1085–220M–05
LM1085–05–220M
LM1085–12–220M
MILITARY VERSION
ELECTRICAL CHARACTERISTICS (TJ = –55 to +150°C unless otherwise stated)
Output
Parameter
Voltage Test Conditions
Min. Typ. Max.
Unit
3.2
4
0.5
5
VIN – VOUT = 5V
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TJ = –55 to 150°C
TA = 25°C
A
ICL
Current Limit
0.2
VIN – VOUT = 25V
5
10
10
10
VIN 20V
VIN 25V
IQ
Quiescent Current
12
5
mA
Minimum Load Current 4
VIN – VOUT = 25V
ADJ.
5
0.004
68
60
0.02 %/W
REG(THERM)
Thermal Regulation
TP = 30ms
5
60
54
TJ = –55 to 150°C
VIN = 8V
12
COUT = 25 F Tantalum VIN = 15V
dB
RA
Ripple Rejection
f = 120Hz
IO = 3A
VIN – VOUT = 3V
ADJ.
ADJ.
ADJ.
60
75
55
CADJ = 25 F
A
IPIN
Adjust Pin Current
120
TJ = –55 to 150°C
TJ = –55 to 150°C
VIN – VOUT = 1.5 to 15V
0.2
5
A
IPIN
Adjust Pin Current Change
IO = 10mA to 3A
TJ = –55 to 150°C
TA = 125°C
0.5
0.3
%
TS
Temperature Stability
Long Term Stability
RMS Output Noise
Thermal Resistance
Junction – Case
1
%
%
T = 1000 Hrs
TA = 25°C
0.003
TBA
TBA
VN
R
f = 10Hz to 10kHz
Control Circuitry
Power Transistor
JC
°C/W
Notes:
1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are
measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output
1
lead
/ ” from the package.
8
2. Line and load regulation are guaranteed up to the maximum power dissipation of 30W. Power dissipation is determined
by the input - output differential and the output current. Guaranteed maximum power dissipation will not be available over
the full input - output voltage range.
3. Dropout voltage is specified over the full output current range of the device.
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
Prelim. 10/95
E-mail: sales@semelab.co.uk
Website: http://www.semelab.co.uk
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