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UC3526ADWINTERSILN/a5avaiRegulating Pulse Width Modulators
UC3526ADWTRG4TIN/a2530avaiRegulating Pulse Width Modulators 18-SOIC 0 to 70
UC3526ANTIN/a2600avaiRegulating Pulse Width Modulators


UC3526AN ,Regulating Pulse Width ModulatorsMAXIMUM RATINGS (Note 1, 2) RECOMMENDED OPERATING CONDITIONS Input Voltage (+VIN) . . . . . . . . . ..
UC3526DW ,Regulating Pulse Width ModulatorUC1526UC2526UC3526Regulating Pulse Width Modulator
UC3526DWTR ,Regulating Pulse Width ModulatorMAXIMUM RATINGS (Note 1, 2) RECOMMENDED OPERATING CONDITIONS (Note 3)Input Voltage (+VIN) . . . . . ..
UC3526J ,Regulating Pulse Width ModulatorMAXIMUM RATINGS (Note 1, 2) RECOMMENDED OPERATING CONDITIONS Input Voltage (+VIN) . . . . . . . . . ..
UC3526J ,Regulating Pulse Width ModulatorELECTRICAL CHARACTERISTICS:UC1526A / UC2526A UC3526APARAMETER TEST CONDITIONS UNITSMIN TYP MAX MIN ..
UC3526N ,Regulating Pulse Width ModulatorUC1526UC2526UC3526Regulating Pulse Width Modulator
UMA7N , Emitter common (dual digital transistors)
UMA9N , Digital transistor (Common Emitter Dual Transistors)
UMB11N , General purpose (dual digital transistors)
UMB1N , General purpose (dual digital transistors)
UMB2N , PNP -100mA -50V Complex Digital Transistors (Bias Resistor Built-in Transistors)
UMB3N , General purpose transistors (dual transistors)


UC3526ADW-UC3526ADWTRG4-UC3526AN
Regulating Pulse Width Modulators
BLOCK DIAGRAM
UC1526A
UC2526A
UC3526A

Regulating Pulse Width Modulator
FEATURES
Reduced Supply Current Oscillator Frequency to 600kHz Precision Band-Gap Reference 7 to 35V Operation Dual 200mA Source/Sink Outputs Minimum Output Cross-Conduction Double-Pulse Suppression Logic Under-Voltage Lockout Programmable Soft-Start Thermal Shutdown TTL/CMOS Compatible Logic Ports 5 Volt Operation (VIN = VC = VREF = 5.0V)
DESCRIPTION

The UC1526A Series are improved-performance pulse-width modu-
lator circuits intended for direct replacement of equivalent non- “A”
versions in all applications. Higher frequency operation has been
enhanced by several significant improvements including: a more ac-
curate oscillator with less minimum dead time, reduced circuit de-
lays (particularly in current limiting), and an improved output stage
with negligible cross-conduction current. Additional improvements
include the incorporation of a precision, band-gap reference gener-
ator, reduced overall supply current, and the addition of thermal
shutdown protection.
Along with these improvements, the UC1526A Series retains the
protective features of under-voltage lockout, soft-start, digital cur-
rent limiting, double pulse suppression logic, and adjustable
deadtime. For ease of interfacing, all digital control ports are TTL
compatible with active low logic.
Five volt (5V) operation is possible for “logic level” applications by
connecting VIN, VC and VREF to a precision 5V input supply. Consult
factory for additional information.
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