UC1835 UC1836
UC2835 UC2836
UC3835 UC3836 High Efficiency Regulator Controller
FEATURES DESCRIPTION Complete Control for a High Current,
Low Dropout, Linear Regulator Fixed 5V or Adjustable Output Voltage Accurate 2.5A Current Limiting with
Foldback Internal Current Sense Resistor The UC1835/6 families of linear controllers are optimized for the design of low cost, low dropout, linear regulators. Using an external pass
element, dropout voltages of less than 0.5V are readily obtained.
These devices contain a high gain error amplifier, a 250mA output
driver, and a precision reference. In addition, current sense with foldback provides for a 2.5A peak output current dropping to less than
0.5A at short circuit. Remote Sense for Improved Load
Regulation External Shutdown Under-Voltage Lockout and Reverse
Voltage Protection Thermal Shutdown Protection 8 Pin Mini-Dip Package
(Surface Mount also Available) BLOCK DIAGRAM Note: Pin numbers refer to 8-Pin DIL Package 8/94 These devices are available in fixed, 5V, (UC1835), or adjustable,
(UC1836), versions. In the fixed 5 volt version, the only external parts
required are an external pass element, an output capacitor, and a compensation capacitor. On the adjustable version the output voltage can
be set anywhere from 2.5V to 35V with two external resistors.
Additional features of these devices include under-voltage lockout for
predictable start-up, thermal shutdown and short circuit current limiting
to protect the driver device. On the fixed voltage version, a reverse
voltage comparator minimizes reverse load current in the event of a
negative input to output differential. UC1835 UC1836
UC2835 UC2836
UC3835 UC3836 ABSOLUTE MAXIMUM RATINGS (Note 1) …
