LT1036_15 Datasheet, PDF (1/12 Pages) Linear Technology – Logic Controlled Regulator

OBSOLETE:
FOR INFORMATION PURPOSES ONLY
Contact Linear Technology for Potential Replacement
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}
U
APPLICATIO S
■ _{Power Supply Sequencing}
■ _{Remote On/Off Power Control}
■ _{Selective System Power During Emergency}
Power Operation
■ _{Memory Power Supply with Back-Up}
LT1036
Logic Controlled Regulator
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.
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.
TYPICAL APPLICATIO
V_IN
ENABLE
LOGIC
Functional Diagram
5
IN
2
EN
LT1036
GND
3
1
OUT
4
AUX
12V
OV
5V
LT1036M/1036C • FD01
Guaranteed Load Current,
12V Output
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
14 16 18 20 22 24 26 28
INPUT VOLTAGE (V)
30
LT1036M/1036C • FD02
1036fb
1