LT1036CT Linear Technology, LT1036CT Datasheet

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LT1036CT

Manufacturer Part Number
LT1036CT
Description
IC REG LOGIC CNTRL 12V/5V TO220
Manufacturer
Linear Technology
Datasheet

Specifications of LT1036CT

Regulator Topology
Positive Fixed
Voltage - Output
12V, 5V
Voltage - Input
Up to 30V
Number Of Regulators
2
Current - Output
3A, 75mA
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Bent and Staggered Leads)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Dropout (typical)
-
Current - Limit (min)
-

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LT
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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
LOGIC
Two Regulated Outputs:
2% Output Voltage Tolerance
60dB Ripple Rejection
0.7% Load Regulation
TTL and CMOS Compatible Logic Control
100% Thermal Burn-In on All Devices
Power Supply Sequencing
Remote On/Off Power Control
Selective System Power During Emergency
Power Operation
Memory Power Supply with Back-Up
Contact Linear Technology for Potential Replacement
ENABLE
FOR INFORMATION PURPOSES ONLY
12V at 3A
5V at 75mA
V
IN
OBSOLETE:
5
2
U
Functional Diagram
IN
EN
LT1036
GND
3
OUT
AUX
U
1
4
12V
5V
LT1036M/1036C • FD01
OV
DESCRIPTIO
The LT
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.
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.
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.
Logic Controlled Regulator
®
1036 features two positive regulators in the same
4.5
3.5
2.5
1.5
0.5
5
4
3
2
1
0
14
16
Guaranteed Load Current,
U
18
INPUT VOLTAGE (V)
12V Output
20
22
24
26
28
30
LT1036
LT1036M/1036C • FD02
1036fb
1

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LT1036CT Summary of contents

Page 1

... The logic input of the LT1036 (enable pin) has a 1.6V threshold and can be driven from a high source impedance. This allows 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. 12V LT1036M/1036C • ...

Page 2

... D = 15V ≤ V ≤ 20V 25V 15V 25V IN (Note ORDER PART FRONT VIEW NUMBER LT1036CT AUX 3 GND PACKAGE = 150°C, θ = 2.5°C 125°C, θ = 2.5°C/W JC MIN TYP MAX 11.76 12 12.24 ● ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range. Main Regulator (Note 2) V SYMBOL PARAMETER I Quiescent Q Current θ Thermal Resistance, JC Junction to Case Auxiliary Regulator (Note 2) SYMBOL PARAMETER V Output Voltage O ∆V Load O ∆I Regulation O ∆V Line ...

Page 4

LT1036 W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input-Output Differential of Main Output 2.6 2 –55°C J 2.2 2.0 1.8 1 25° 150°C 1.2 J 1.0 0 0.5 1.0 2.0 2.5 ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Short-Circuit Current, 12V Output 25° INPUT VOLTAGE (V) LT1036M/1036C • TPC10 U U APPLICATIO S I ...

Page 6

LT1036 U U 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 shown in Figure 2. AUX 5 ...

Page 7

U U APPLICATIO S I FOR ATIO Output Current The main output current limits at about 4A for input voltages below 20V. Internal foldback, or “power limit- ing”, circuitry detects the input-output voltage differential and reduces current limit for input ...

Page 8

LT1036 U TYPICAL APPLICATIO S First-On, Last-Off Sequencing V IN OUT 12V IN LT1036 “FIRST ON” EN AUX 5V GND R4 R1 150k 10k R2 2.2k t (1) = 50ms ON t (2) = 150ms 50µF ...

Page 9

W W SCHE ATIC DIAGRA Q38 860 800 Q36 Q37 Q35 900 AUX 4Ω OUTPUT 20pF 1.2k 10k Q6 12k 6k 3k Q33 ...

Page 10

LT1036 PACKAGE DESCRIPTIO 0.390 – 0.415 (9.906 – 10.541) 0.230 – 0.270 (5.842 – 6.858) 0.460 – 0.500 (11.684 – 12.700) 0.330 – 0.370 (8.382 – 9.398) 0.067 BSC 0.028 – 0.038 (1.70) (0.711 – 0.965 Package ...

Page 11

... 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U ...

Page 12

... Cost N-Channel MOSFETs, Fast Transient Response. www.linear.com ● = 1.265V, Dropout Voltage = 350mV-Ext PNP OUT = 1.21V, Dropout Voltage = .34V@I , OUT OUT "A" Version Stable with Ceramic Capacitors. RMS PK-PK. = 1.23V, Dropout Voltage = 150mV Ext FET OUT LW 0807 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1985 1036fb ...

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