Seme LAB LT1085GMD 3 amp positive voltage regulator Datasheet

LT1085GMD
LT1085IGDII
LT1085SMD
3 AMP POSITIVE
VOLTAGE REGULATOR
INPUT
SAFE AREA
PROTECT ION
CU RR EN T
LIMITING
AMPLIFIER
L IM I T
OU TPUT
SEN SE
T H E R M AL
O V ER L O AD
VOL T AGE
REGUL ATION
AMPLIFIER
VR E F
FEATURES
• Low Dropout Performance
• Fixed or Adjustable Voltages
• Fixed Output Voltages of 3.3V, 5V & 12V
• Adjustable Output Voltage Range From 1.2V
• Line Regulation 0.015% / V Typical.
• Load Regulation 0.01% Typical.
• Available in Hermetically Sealed TO–3, SMD1 and
TO–257 (isolated & non-isolated) Packages.
• Military Temperature Range (–55 to +150°C)
DEVICE(1)
LT1085K–XX
LT1085G–XX
LT1085IG–XX
LT1085SMD–XX
ADJUST
DESCRIPTION
PACKAGE
TO–3
TO–257
Isolated TO–257
SMD1
Note
The LT1085 voltage regulators are monolithic integrated circuits designed for use in applications
requiring a well regulated positive output voltage
with low input-output differential voltage.
1) –XX = Voltage Option: 3.3, 5 or 12
–XX = Left blank for Adjustable Option.
Features include full power usage of up to 3A load current, internal current limiting and thermal shutdown. Safe area
protection on the die is also included, providing protection of the series pass Darlington transistor under most conditions.
The hermetically sealed TO–3 packages are utilised for high reliablitiy and low thermal resistance, whilst the SMD1
package is designed for surface mount applications.
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
VIN
Input – Output Voltage Differential
PD
Power Dissipation
RqJC
Thermal Resistance Junction To Case
TO–3
TO–3
Control
Power
0.93°C / W
3.0°C / W
RqJC
Thermal Resistance Junction To Case
SMD1
SMD1
Control
Power
0.79°C / W
4.0°C / W
RqJC
Thermal Resistance Junction To Case
TO–257
TO–257
Control
Power
0.79°C / W
4.0°C / W
TJ
Operating Junction Temperature Range
Control
Power
–55 to 150°C
–55 to 200°C
TSTG
Storage Temperature Range
TLEAD
Lead Temperature (for 10 sec.)
35V
Internally limited *
–65 to 150°C
300°C
* These ratings are only applicable for power dissipations of 30 Watts over a limited range of VIN – VOUT.
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: [email protected]
Website: http://www.semelab.co.uk
Prelim. 7/00
LT1085GMD
LT1085IGDII
LT1085SMD
ELECTRICAL CHARACTERISTICS
Output
Voltage Test Conditions
Parameter
3.3
VO
4
Output Voltage
5
12
VREF
4
REG(LINE)
Reference Voltage
4
(TJ = 25°C Unless otherwise stated)
ADJ.
Line Regulation
VIN – VOUT = 6.3V
IO = 10mA
IO = 10mA to 3A
TJ = Over Temp
VIN – VOUT = 8V
IO = 10mA
IO = 10mA to 3A
TJ = Over Temp
VIN – VOUT = 15V
IO = 10mA
IO = 10mA to 3A
TJ = Over Temp
VIN – VOUT = VO + 3V
IO = 10mA
IO = 10mA to 3A
TJ = Over Temp
VIN – VOUT = 1.5 to 15V
TJ = 25°C
IO = 10mA
TJ = Over Temp
VIN – VOUT = 1.5 to 35V
IO = 10mA
TJ = Over Temp
REG(LOAD)
4
Load Regulation
VD
Dropout Voltage
ICL
Current Limit
IQ
Quiescent Current
REG(THERM) Thermal Regulation
1,2
3
3
3
3
Min.
Typ.
Max.
3.267
3.3
3.333
3.234
3.3
3.366
4.95
5
5.05
4.90
5
5.10
11.88
12
12.12
11.76
12
12.24
1.238
1.25
1.262
1.225
1.25
1.270
0.015
0.2
3
0.035
3
Adjust Pin Current
DIPIN
Adjust Pin Current Change
TS
Temperature Stability
IO
Minimum Load Current
VN
RMS Output Noise
RA
Ripple Rejection Ratio
0.3
VIN – VOUT = 3V
TJ = Over Temp
3
0.2
0.4
DVOUT , DVREF = 1%
TJ = Over Temp
3
1.3
1.5
VIN – VOUT = 5V
TJ = Over Temp
3
3.2
VIN – VOUT = 25V
TJ = Over Temp
3
0.2
VIN – VOUT = 35V
TJ = Over Temp
3
tp = 30ms
TJ = 25°C
3
TJ = Over Temp
3
5
3
VIN – VOUT = 3V
IO = 3A
3
60
%
%
%
V
A
0.01
%/W
5
mA
mA
%
0.5
IO = 0.5A
V
mA
0.2
3
V
10
120
TJ = 25°C
TJ = Over Temp
0.5
0.002
IO = 0.5A
VIN – VOUT = 25V
TJ = Over Temp
4.0
55
TJ = Over Temp
TJ = Over Temp
6
0.1
TJ = 25°C
VIN – VOUT = 5V
5
0.6
VIN – VOUT = 3V
TJ = 25°C
IPIN
0.05
Unit
10
mA
0.003
%VO
75
dB
Notes
1. Test Conditions unless otherwise stated:
VIN = 1.5 to 35V, or Maximum Input, whichever is less.
IO = 10mA to 3A.
2. These specifications are only applicable for power dissipations of 30 Watts over a limited range of VIN – VOUT.
3. Over Temp. = Over specified Junction Temperature Range (See Absolute Maximum Ratings).
4. Low duty cycle pulse test with Kelvin connections required. Changes in output voltage are covered under the specification
for thermal regulation.
5. Bandwidth of 10Hz to 10kHz.
6. 120Hz input ripple, 15V = 64dB min. COUT (CADJ) = 25mF.
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: [email protected]
Website: http://www.semelab.co.uk
Prelim. 7/00
LT1085GMD
LT1085IGDII
LT1085SMD
K Package (TO–3)
G & IG Packages (TO–257)
40.01 (1.575)
Max.
4.83 (0.190)
5.08 (0.200)
0.89 (0.035)
1.14 (0.045)
10.41 (0.410)
10.92 (0.430)
3.56 (0.140)
Dia.
3.81 (0.150)
1 2 3
12.07 (0.500)
19.05 (0.750)
4.47 (0.176)
Rad.
2 Pls.
13.38 (0.527)
13.64 (0.537)
26.67
(1.050)
Max.
16.38 (0.645)
16.89 (0.665)
10.41 (0.410)
10.67 (0.420)
22.23 (0.875)
Max.
11.43 (0.450)
6.35 (0.250)
1.09 (0.043)
0.97 (0.038)
Dia.
1.63 (0.064)
1.52 (0.060)
0.64 (0.025)
Dia.
0.89 (0.035)
2.54 (0.100)
BSC
12.19 (0.48)
11.18 (0.44)
3.05 (0.120)
BSC
30.40 (1.197)
29.90 (1.177)
SMD1 PACKAGE
0 .7 6
(0 .0 3 0 )
m in .
11.18 (0.440)
10.67 (0.420)
4 .1 4 (0 .1 6 3 )
3 .8 4 (0 .1 5 1 )
2
3 .7 0 (0 .1 4 6 )
3 .4 1 (0 .1 3 4 )
0 .8 9
(0 .0 3 5 )
m in .
3 .7 0 (0 .1 4 6 )
3 .4 1 (0 .1 3 4 )
1
3
1 0 .6 9 (0 .4 2 1 )
1 0 .3 9 (0 .4 0 9 )
1
LT1085
Pin
1
2
Fixed
Adjustable
COMMON
ADJUST
INPUT
INPUT
Case is OUTPUT
Semelab plc.
Fixed
Adjustable
COMMON
ADJUST
OUTPUT
OUTPUT
INPUT
INPUT
Case is OUTPUT
7 (0
8 (0
8 (0
8 (0
.3 8
.3 6
.4 5
.4 4
1 )
9 )
6 )
4 )
0 .5 0 (0 .0 2 0 )
0 .2 6 (0 .0 1 0 )
LT1085SMD
Pin
1
2
3
LT1085G
Pin
1
2
3
2
9 .6
9 .3
1 1 .5
1 1 .2
16.97 (0.668)
16.87 (0.664)
3 .6 0 (0 .1 4 2 )
M a x .
1 6 .0 2 (0 .6 3 1 )
1 5 .7 3 (0 .6 1 9 )
4.09 (0.161)
3.84 (0.151)
2 Pls
Fixed
COMMON
OUTPUT
INPUT
Adjustable
ADJUST
OUTPUT
INPUT
LT1085IG
Pin
1
2
3
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: [email protected]
Website: http://www.semelab.co.uk
Fixed
Adjustable
COMMON
ADJUST
OUTPUT
OUTPUT
INPUT
INPUT
Case is ISOLATED
Prelim. 7/00
Similar pages