LINER LT1036MK

LT1036
Logic Controlled Regulator
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DESCRIPTIO
The LT®1036 features two positive regulators in the same
package. The 12V main regulator offers excellent
performance while supplying load currents up to 3A, and
the 5V auxiliary regulator provides similar performance
while supplying lighter loads of 75mA. The main regulator
has the additional feature of being under the shutdown
control of a logic signal. When the enable pin is taken to a
low logic level, the main regulator shuts down and its
output voltage goes to near 0V. During this command, the
auxiliary output is unaffected by the main regulator’s
condition and continues to provide a 5V output.
FEATURES
■
■
■
■
■
■
Two Regulated Outputs:
12V at 3A
5V at 75mA
2% Output Voltage Tolerance
60dB Ripple Rejection
0.7% Load Regulation
TTL and CMOS Compatible Logic Control
100% Thermal Burn-In on All Devices
The main output has current and power limiting combined
with thermal shutdown to make it virtually blowout proof.
The auxiliary output is not affected by the thermal
shut down mechanism or the state of the main output,
allowing it to be used as a back-up in case of overloads or
shorts on the main supply.
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APPLICATIO S
■
■
■
■
Power Supply Sequencing
Remote On/Off Power Control
Selective System Power During Emergency
Power Operation
Memory Power Supply with Back-Up
The logic input of the LT1036 (enable pin) has a 1.6V
threshold and can be driven from a high source
impedance. This allows it to be driven by most logic
families, including TTL and CMOS.
For a dual 5V version of the LT1036, please see the LT1035
data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
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TYPICAL APPLICATIO
Guaranteed Load Current,
12V Output
Functional Diagram
5
4.5
12V
VIN
5
IN
OUT
4
1
OV
LOGIC
2
EN
GND
AUX
4
CURRENT (A)
LT1036
ENABLE
3.5
5V
3
3
2.5
2
1.5
LT1036M/1036C • FD01
1
0.5
0
14
16
18
20 22 24 26
INPUT VOLTAGE (V)
28
30
LT1036M/1036C • FD02
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LT1036
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ABSOLUTE
RATI GS (Note 1)
Power Dissipation
Continuous (Note 6) ........................................... 24W
Fault Conditions .............................. Internally Limited
Input Voltage (VIN) .................................................. 30V
Enable Voltage (VEN) ............................................... 30V
Operating Junction Temperature
LT1036M (OBSOLETE) ..................... – 55°C to 150°C
LT1036C ................................................ 0°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
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PRECO DITIO I G 100% Burn-In in Thermal Limit
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PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
BOTTOM VIEW
VIN
VO
5
1
CASE
IS GND
2
4
LT1036MK
LT1036CK
ORDER PART
NUMBER
FRONT VIEW
5
AUX
3
GND
2
AUX
VEN
1
VEN
VO
K PACKAGE
4-LEAD TO-3 METAL CAN
T PACKAGE
5-LEAD PLASTIC TO-220
TJMAX = 125°C, θJC = 3°C/W
TJMAX = 150°C, θJC = 2.5°C/W
TJMAX = 125°C, θJC = 2.5°C/W
OBSOLETE PACKAGE
LT1036CT
VIN
4
Consider the T Package as an Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range. Main regulator (Note 2) VIN = 15V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VO
Output Voltage
TJ = 25°C
11.76
12
12.24
V
12.48
V
High
15V ≤ VIN ≤ 30V,
IOUT ≤ IMAX (Note 7)
●
Low
7V ≤ VIN ≤ 30V
●
0.1
0.3
V
●
10
80
mV
1
4
mV/V
∆VO
∆IO
Load Regulation
(Note 7)
VIN = 16V
0 ≤ IO ≤ 3A (Note 3)
∆VO
∆VIN
Line
Regulation
15V ≤ VIN ≤ 30V
(Note 3)
Ripple Rejection
50Hz ≤ f ≤ 500Hz (Note 9)
Thermal Regulation
∆PD = 20W (Note 5)
IO
Available Load Current
(Note 7)
15V ≤ VIN ≤ 20V
VIN = 25V
ISC
Short Circuit
Current
VIN = 15V
VIN = 25V
VIN
Input Voltage to
Maintain Regulation
(Dropout Voltage)
(Note 6)
IO = 1A
IO = 3A
11.52
50
60
0.003
●
●
●
●
3
2
dB
0.012
4
2.7
%/W
A
A
2.3
1
4
2
A
A
13.8
14.4
14.5
15
V
V
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LT1036
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range. Main Regulator (Note 2) VIN = 15V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
IQ
Quiescent
Current
θJC
Thermal Resistance,
Junction to Case
MIN
TYP
MAX
UNITS
Output High
Output Low
4
3
5.5
4.5
mA
mA
TO-220
2
3
°C/W
Auxiliary Regulator (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VO
Output Voltage
TJ = 25°C
4.9
5.0
5.1
V
4.8
5.0
5.2
V
5
15
mV
1
2
mV/V
mV/V
7.2V ≤ VIN ≤ 30V
0mA ≤ IO ≤ 75mA
●
●
∆VO
∆IO
Load
Regulation
7.2V ≤ VIN ≤ 30V
0mA ≤ IO ≤ 75mA (Note 3)
∆VO
∆VIN
Line
Regulation
7.2V ≤ VIN ≤ 30V
(Note 3)
0.2
Ripple Rejection
50Hz ≤ f ≤ 500Hz
74
ISC
Short Circuit
Current (Note 8)
7.0V ≤ VIN ≤ 30V
140
VIN
Input Voltage to
Maintain Regulation
(Dropout Voltage)
(Note 6)
IO ≤ 10mA
IO = 75mA
●
●
dB
250
mA
6.2
6.8
6.5
7.2
V
V
MIN
TYP
MAX
UNITS
Logic Control (Note 2)
SYMBOL
PARAMETER
CONDITIONS
VEN
Enable Threshold Voltage
7.0V ≤ VIN ≤ 30V
TJ = 25°C
●
1.45
1.3
1.6
1.6
1.7
1.8
V
V
VEN ≤ 1V (Note 4)
●
0
1.5
12
µA
VEN ≤ 2.4V
●
0
6
µA
Enable Pin Current
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Unless otherwise indicated, these specifications apply for
VIN = 15V, IO = 0mA, and TJ = 25°C.
Note 3: Line and load regulation is measured using a low duty cycle pulse,
causing little change in the junction temperature. Effects due to thermal
gradients and device heating must be taken into account separately.
Note 4: When the enable pin is at a low logic level, current flows out of the
enable pin.
Note 5: Pulse length for this measurement is 20ms.
Note 6: Input voltage is reduced until output drops by 100mV from its
initial value.
Note 7: See “Guaranteed Load Current” graph.
Note 8: Continuous shorts on the auxiliary output are not allowed unless
adequate heat sinking is used to maintain junction temperature below
150°C.
Note 9: Guaranteed but not tested.
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LT1036
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TYPICAL PERFOR A CE CHARACTERISTICS
Minimum Input-Output
Differential of Main Output
Minimum Input-Output
Differential of Auxiliary Output
2.4
2.2
2.0
1.8
1.6
TJ = 25°C
1.4
TJ = 150°C
0
0.5
2.2
2.0
TJ = 150°C
1.8
TJ = 25°C
1.6
1.2
1.0
0.8
1.0
2.0
1.5
OUTPUT CURRENT (A)
2.5
0.6
3.0
20
0
60
80
40
OUTPUT CURRENT (mA)
LT1036M/1036C • TPC01
SUPPLY CURRENT (mA)
4
CURRENT (A)
6
5
3
12V OUTPUT “OFF”
2
0
0
28
0
32
4
6
8
TIME (µs)
10
12
14
12.2
12.1
12.0
11.9
11.8
3
6
9 12 15 18 21 24 27 30
INPUT VOLTAGE (V)
5.1
5.0
4.9
4.8
4.7
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
LT1036M/1036C • TPC05
LT1036M/1036C • TPC04
Load Transient Response,
12V Output
LT1036M/1036C • TPC06
Enable Pin Characteristics
Enable Threshold
50
1.75
0
0
COUT = 1µF TANTALUM
1.70
–0.2
1.65
0.4
50
0
COUT = 10µF TANTALUM
–50
LOAD TRANSIENT
0.2
TJ = 25°C
0.6
0.8
1.0
THRESHOLD (V)
–50
CURRENT (µA)
OUTPUT VOLTAGES
CHANGE (V)
2
LT1036M/1036C • TPC03
12V OUTPUT “ON”
1
LOAD
TRANSIENT (A)
VIN = 18V
4
1
12 16 20 24
INPUT VOLTAGE (V)
0
0
MAIN OUTPUT (V)
TJ = 25°C
8
∆ VIN = 1V
1
Output Voltage vs Temperature
7
2
COUT = 10µF TANTALUM
0
Quiescent Current
TJ = 25°C
4
20
100
8
5
0
0
–20
LT1036M/1036C • TPC02
Maximum Available Load
Current, 12V Output
DEVICE OUT OF REGULATION
3
BELOW 14V
COUT = 1µF TANTALUM
20
–20
1.4
AUXILIARY OUTPUT (V)
1.2
TJ = –55°C
INPUT
TRANSIENT (V)
TJ = –55°C
INPUT-OUTPUT VOLTAGE (V)
INPUT-OUTPUT VOLTAGE (V)
2.4
OUTPUT
VOLTAGE CHANGE (mV)
2.6
2.6
1.0
Line Transient Response,
12V Output
1.60
1.55
1.50
1.2
1.45
0
1.4
IOUT = 1A
∆ IOUT = 0.2A
1.8
0
2
1.40
1.6
4
6
8
TIME (µs)
10
12
14
LT1036M/1036C • TPC07
1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 20
ENABLE VOLTAGE (V)*
*NOTE SCALE CHANGE
0
1.35
–50 –25
0
25 50 75 100 125 150
JUNCTION TEMPERATURE (°C)
LT1036M/1036C • TPC09
LT1036M/1036C • TPC08
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LT1036
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TYPICAL PERFOR A CE CHARACTERISTICS
Short-Circuit Current, 12V Output
Output Switching Characteristics
5
TJ = 25°C
3
2
200
180
12
9
6
ENABLE
VOLTAGE (V)
160
COUT = 1µF
140
COUT = 10µF
3
SEE APPLICATION SECTION
FOR FALL TIME INFORMATION
0
1
CCOUT
0.1F
OUT≤≤0.1µF
5
4
8
12 16 20 24
INPUT VOLTAGE (V)
28
120
100
60
20
0
32
10 20 30 40 50 60 70 80 90
TIME (µs)
LT1036M/1036C • TPC10
LT1036M/1036C • TPC11
MAIN (12V) OUTPUT
80
40
0
0
0
NOISE (µVRMS)
OUTPUT VOLTAGE (V)
15
4
CURRENT (A)
Output Voltage Noise
0
100
AUXILIARY
OUTPUT
300
3k
10k
1k
BANDWIDTH (1 POLE) (Hz)
30k
LT1036M/1036C • TPC12
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APPLICATIO S I FOR ATIO
General Information
The LT1036 is a dual output regulator. The main 12V
output is capable of delivering up to 3A of load current and
can be shut down with a logic signal. The auxiliary 5V
output supplies a minimum of 75mA and is unaffected by
the logic signal. The outputs are trimmed to ± 2% initial
tolerance and exhibit excellent line and load regulation.
The logic control feature makes the LT1036 ideal for many
system applications where it is desirable to power-up a
portion of the system for a period of time, and then power
the system down during a standby operation. Applications
such as multiple power supply sequencing, elimination of
expensive AC and DC power switches, delayed start applications, switching 12V DC loads, and many others are
now easily accomplished.
Timing functions, such as delayed power-up or powerdown, can also be performed directly at the enable pin.
Because a logic low on the enable pin shuts down the main
regulator, feedback from output to enable can be used to
generate hysteresis or latching functions.
The low quiescent current drain of the LT1036 makes it
useful in battery-powered or battery back-up applications.
The enable pin can be used as a “low battery” detector or
to shut down major portions of system power, allowing
memory portions to continue to operate from the auxiliary
output. At low output currents, the auxiliary output will
regulate with input voltage typically as low as 6.2V, giving
maximum battery life.
Good design practice with all regulators is to bypass the
input and output terminals. A 2µF solid tantalum at the
input and at both outputs is suggested. For the applications which follow, the bypass capacitors are still recommended, but for simplicity are not shown on the diagram.
It is also recommended that for maximum noise immunity
the voltage enable pin be tied high if it is unused. It can be
tied directly to VIN, as shown in Figure 1, or to the auxiliary
Output. If the enable pin is left open, it will float to a high
logic level of approximately 1.6V and the main output
regulator will be at 12V.
The enable pin is fully protected against input voltages up
to 30V, even if the power input voltage is zero.
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LT1036
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APPLICATIO S I FOR ATIO
The basic shutdown control circuit uses a direct gate drive
or an open collector driver and a pull-up resistor which are
tied to VAUX, as shown in Figure 2.
5
VIN
+
2
1µF
IN
OUT
LT1036
EN
GND
3
AUX
1
VO 12V
+
2µF
5V
4
+
2µF
be used as the timing current in delayed power-up
applications as it is temperature sensitive and varies
somewhat from device to device. Instead, a resistor tied to
the auxiliary output, the input, or to a logic signal should
be used. The timing resistor chosen should provide at
least 25µA of current to “swamp out” the effects of the
internal current.
Main Output Current Voltage Characteristics
Figure 1
7.5-20V
IN
12V
OUT
LT1036
EN
GND
AUX
5V
0A-3A
LOAD
0mA–75mA
LOAD
VAUX
LT1036M/1036C • AI02
Figure 2
Driving the Enable Pin
The enable pin equivalent schematic is shown in Figure 3.
Basically, enable pin current is zero above the threshold
and about 1.5µA below the threshold, flowing out of the
pin. Standard logic, such as TTL and CMOS, will interface
directly to the enable pin, even if the logic output swing is
higher than the input voltage (VIN) to the regulator.
15V CMOS can be used to drive the enable pin, even if
the regulator is not powered up, without loading the
CMOS output.
Timing functions, such as delayed power-up or
power-down can be implemented with an RC network.
The current flowing out of the enable pin should not
70µA
1V
ENABLE
Following a high to low transition at the enable pin, the
main regulator output will begin to drop after a delay of
approximately 0.4µs. With no capacitive load, the output
will fall to zero in approximately 0.8µs (RL = 4Ω to 100Ω).
With a capacitive load, fall time is limited by the RC product
of the load and the output capacitance. For light loads
(RL >400Ω), the discharge time is controlled by an
internal current pull-down of 15mA for output voltages
down to 1.5V. Below 1.5V, the pull-down current drops to
≈ 4mA. The DC output voltage in the shutdown mode is
approximately 0.12V due to an internal current path in the
regulator. (See Figure 4.)
The user should note that the output in the low state can
only sink about 3mA. If current is forced into the output,
the output voltage will rise to 1V at 5mA and about 1.5V at
10mA. With no output capacitor, the rise time of the main
output is about 12µs. With an output capacitor, rise time
is limited by the short circuit current of the LT1036 and the
load capacitance. A 10µF output capacitor slows the
output rise time to approximately 80µs.
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CURRENT FORCED INTO OUTPUT (mA)
LT1036M/1036C • AI01
9 VIN = 15V
8
7
6
5
4 TJ = 25°C
TJ = –55°C
3
2
TJ = 150°C
1
0
0
0.2
0.4 0.6 0.8 1.0 1.2
OUTPUT VOLTAGE (V)
LT1036M/1036C • AI03
Figure 3
1.4
1.6
LT1036M/1036C • AI04
Figure 4
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LT1036
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APPLICATIO S I FOR ATIO
Output Current
The main output current limits at about 4A for input
voltages below 20V. Internal foldback, or “power limiting”, circuitry detects the input-output voltage differential
and reduces current limit for input to output voltages
exceeding 8V. With 25V input, for instance, short circuit
current is reduced to ≈ 0.9A.
An additional feature of the LT1036 is that the auxiliary
supply does not incorporate, nor is it affected by, thermal
shutdown. Any fault condition of the main regulator will
not affect the auxiliary output voltage.
The following applications circuits will serve to indicate
the versatility of the LT1036.
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TYPICAL APPLICATIO S
Fast Turn-Off, Delayed Turn-On
VIN
IN
Latch-Off with Output Short
OUT
12V
VIN
LT1036
EN
*
GND
IN
OUT
12V
LT1036
AUX
EN
GND
68k
AUX
0.33µF
*CAN BE ANY GATE TYPE
5V
+
R1
100k
C1
LT1036M/1036C • TA02
tON = 0.3 R1C1
LT1036M/1036C • TA01
Delayed Power-Up
VIN
IN
Thermal Cutoff at High Ambient Temperature
OUT
VIN
12V
IN
EN
GND
OUT
5V
LT1036
LT1036
AUX
EN
5V
GND
AUX
26.1k
C1
tDELAY ≈ 0.4 R1C1
R1
27k
tOFF = 58°C
tON = 46°C
154k
Rt*
LT1036M/1036C • TA03
*YELLOW SPRINGS #44008. 30kΩ at 25°C
LT1036M/1036C • TA04
Power Supply Turn-On Sequencing
VIN
IN
OUT
LT1036
EN
GND
IN
AUX
OUT
LT1036
R2
EN
GND
AUX
C2
R1
C1
t1 = 0.4 R1C1
t2 = 0.15 R2C2
LT1036M/1036C • TA05
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LT1036
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TYPICAL APPLICATIO S
First-On, Last-Off Sequencing
VIN
IN
OUT
LT1036
“FIRST ON”
EN
GND AUX
IN
12V
First-On, First-Off Sequencing
OUT
12V
VIN
IN
OUT
LT1036
“FIRST ON”
EN
GND AUX
LT1036
EN
5V
GND
AUX
5V
R1
10k
R4
150k
R5
150k
+
5V
ON
EN
OFF
OFF
tON (1) = 100ms
tON (2) = 200ms
ON
GND
AUX
5V
R2
4.7k
R5
1k
+
R1
1k
100µF
50µF
12V
R6
150k
R3
1k
R3
1k
OUT
LT1036
R4
150k
R2
2.2k
tON (1) = 50ms
tON (2) = 150ms
IN
12V
LT1036M/1036C • TA06
LT1036M/1036C • TA07
Line Dropout Detector
TO FILTERED
RAW DC
IN
TRIP SET
OUT
12V
AUX
5V AUXILIARY
LT1036
18k
500k
TO SECONDARY
OF AC POWER
TRANSFORMER
EN
8
0.1µF
4N46
GND
3
2k
3.3k
–
7
LT1011
1N4148(4)
2
+
DROPOUT
SIGNAL
1
4
3k
LT1036M/1036C • TA08
Low Dissipation Regulator
27k
1k
1N4003
3.9k
LT1035
LT1036 VOUT
VIN
AUX
6000µF
4
2
GND
+
12V
OUTPUT
10µF
–
4
12V
GND
AUX
5V
COUPLER “ON” = OUTPUT “ON”
OUTPUT
CONTROL
LOGIC
150k
+
OUT
3
R
2
LT1011
COMPARATOR
1
EN
1
10.5k
1000pF
8
EN
5
+
IN
LT1036
15.5V
1mH*
VIN
17.5VDC
TO 30VDC
7
VIN
3.5V DC UNDER
ALL CONDITIONS
2N6667
1k
Optocoupled Output Control
3
5k
5k
*DALE TD-5
THIS CIRCUIT IS DESIGNED TO
REDUCE POWER DISSIPATION
IN THE LT1036 OVER A
90VAC–140VAC INPUT RANGE
SELECT R DEPENDING UPON THE
ON-RESITANCE OF THE OPTOCOUPLER
LT1036M/1036C • TA10
LT1036M/1036C • TA09
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LT1036
W
W
SCHE ATIC DIAGRA
VIN
5
Q38
860
800
6k
3k
Q36
Q37
Q31
Q33
Q32
D2
7V
Q35
Q28
Q29
8k
D1
5k
Q23
Q27
Q24
10k
2k
5k
430
Q13
Q2
Q1
Q12
AUX
OUTPUT
3k
D5
8k
5k
115
1.3k
900
Q3 2k
Q7
Q8
Q30
Q11
Q25
20pF
D3
6.5V
Q10
20
Q5
0.03Ω
10pF
4Ω
4
50
750
Q4
4k
Q26
30
pF
15pF
Q34
Q9
20pF
MAIN
OUTPUT
500
1.2k
10k
1
Q22
4.8k
8k
Q21
Q6
7k
Q16
Q20
Q15
2.1k
12k
20.4k
Q19
Q14
2k
Q18
400
2.9k
Q39
Q17
10k
100k
500
GND
3
2
ENABLE
LT1036M/1036C • SD01
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LT1036
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PACKAGE DESCRIPTIO
T Package
5-Lead Plastic TO-220 (Standard)
(Reference LTC DWG # 05-08-1421)
0.390 – 0.415
(9.906 – 10.541)
0.165 – 0.180
(4.191 – 4.572)
0.147 – 0.155
(3.734 – 3.937)
DIA
0.045 – 0.055
(1.143 – 1.397)
0.230 – 0.270
(5.842 – 6.858)
0.460 – 0.500
(11.684 – 12.700)
0.570 – 0.620
(14.478 – 15.748)
0.330 – 0.370
(8.382 – 9.398)
0.620
(15.75)
TYP
0.700 – 0.728
(17.78 – 18.491)
SEATING PLANE
0.152 – 0.202
0.260 – 0.320 (3.861 – 5.131)
(6.60 – 8.13)
0.095 – 0.115
(2.413 – 2.921)
0.155 – 0.195*
(3.937 – 4.953)
0.013 – 0.023
(0.330 – 0.584)
BSC
0.067
(1.70)
0.028 – 0.038
(0.711 – 0.965)
0.135 – 0.165
(3.429 – 4.191)
* MEASURED AT THE SEATING PLANE
T5 (TO-220) 0399
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LT1036
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PACKAGE DESCRIPTIO
K Package
4-Lead TO-3 Metal Can
(Reference LTC DWG # 05-08-1311)
0.320 – 0.350
(8.13 – 8.89)
0.760 – 0.775
(19.30 – 19.69)
0.060 – 0.135
(1.524 – 3.429)
0.420 – 0.480
(10.67 – 12.19)
0.038 – 0.043
(0.965 – 1.09)
1.177 – 1.197
(29.90 – 30.40)
0.470 TP
P.C.D.
0.655 – 0.675
(16.64 – 19.05)
0.151 – 0.161
(3.84 – 4.09)
DIA 2 PLC
0.167 – 0.177
(4.24 – 4.49)
R
72°
18°
0.490 – 0.510
(12.45 – 12.95)
R
K4(TO-3) 1098
OBSOLETE PACKAGE
1036fa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
LT1036
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1573
UltraFast Transient Response Low Dropout Regulator
PNP Driver, Up to 5A
VIN=2.8 to 10V, VOUT = 1.265V, Dropout Voltage = 350mV-Ext PNP
V@IOUT, IQ = 1.7mA, Shutdown Current = 200µA, S8 Package.
Requires External PNP Transistor.
LT1764/A
3A, Low Noise, Fast Transient Response, LDO
VIN = 2.7 to 20V, VOUT = 1.21V, Dropout Voltage = .34V@IOUT,
IQ = 1mA, Shutdown Current < 1µA, DD, TO220-5 Packages. Low
Noise < 40µVRMS PK-PK. "A" Version Stable with Ceramic Capacitors.
LT3150
Fast Transient Response Low Dropout Regulator
MOSFET Driver, Up to 10A
VIN = 1.4 to 10V, VOUT = 1.23V, Dropout Voltage = 150mV Ext FET
@IOUT, IQ = 12mA, GN-16 Package. Intgr LT1613 Boost, Drives Low
Cost N-Channel MOSFETs, Fast Transient Response.
1036fa
12
Linear Technology Corporation
LW/TP 0902 1K REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
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 LINEAR TECHNOLOGY CORPORATION 1985