RH1085 Datasheet, PDF (1/4 Pages) Linear Technology – 3A Low Dropout Positive Adjustable Regulator

RH1085
3A Low Dropout
Positive Adjustable Regulator
DESCRIPTION
The RH1085 positive adjustable regulator 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 trim-
ming adjusts the output voltage to 1%. Current limit is also
trimmed, minimizing the stress on both the regulator and
power source circuitry under overload conditions.
The RH1085 is pin compatible with older 3-terminal regu-
lators. A 10μF output capacitor is required on these new
device. However, this is usually included in most regulator
designs.
The wafer lots are processed to Linear Technology
Corporation’s in-house Class S flow-to-yield circuits
usable in stringent military applications.
ABSOLUTE MAXIMUM RATINGS
Power Dissipation .............................. Internally Limited
Input-to-Output Voltage Differential ......................... 30V
Operating Junction Temperature Range
Control Section ............................. – 55°C to 150°C
Power Transistor ............................ – 55°C to 200°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PRECONDITIONING
100% Thermal Limit Burn-In
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
BURN-IN CIRCUIT
PACKAGE INFORMATION
15V
–15V
RH1085
IN
OUT
ADJ
1k
CAPACITOR(S) NOT SHOWN
121Ω
RH1085 BI
BOTTOM VIEW
V_IN
2
1
ADJ
K PACKAGE
2-LEAD TO-3 METAL CAN
CASE
IS OUTPUT
FINAL SPECIFICATIONS SUBJECT TO CHANGE
Note: For ordering information contact LTC.
1