UC2836N ,High Efficiency Regulator ControllerFEATURES DESCRIPTION• Complete Control for a High Current, The UC1835/6 families of linear controll ..
UC2836N ,High Efficiency Regulator ControllerMAXIMUM RATINGS (Note 1)Input Supply Voltage (+VIN) . . . . . . . . . . . . . . . . –1.0V to + 40V ..
UC2840 ,PWM Controllerfeatures of these devices in-
clude a 1% accurate reference, provision for slow,
turn-on and duty ..
UC2840 ,PWM ControllerABSOLUTE MAXIMUM RATINGS
Symbol Parameter Test Conditions Unit
V, Supply Voltage + V. (pin 15)
V ..
UC2840N ,32V; 1000mW; programmable off-line PWM controllerfeatures required
by all types of switching power supply controllers,
the UC184O family has been ..
UC2841DW ,Programmable, Off-Line, PWM ControllerMAXIMUM RATINGS Supply Voltage, +V (Pin 15) (Note 2) Operating Junction Temperature . . . . . . . . ..
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UM3561A , CARACTERISTICAS
UC2836N
High Efficiency Regulator Controller
FEATURES 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 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)
DESCRIPTIONThe UC1835/6 families of linear controllers are optimized for the de-
sign 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 fold-
back provides for a 2.5A peak output current dropping to less than
0.5A at short circuit.
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 com-
pensation 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.
High Efficiency Regulator Controller
BLOCK DIAGRAM
UC1835 UC1836
UC2835 UC2836
UC3835 UC3836
