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SG3526N
Voltage Mode PWMs
ORDERING INFORMATION
Order this document by SG3526/D --
The SG3526 is a high performance pulse width modulator integrated
circuit intended for fixed frequency switching regulators and other power
control applications.
Functions included in this IC are a temperature compensated voltage
reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse
metering and steering logic, and two high current totem pole outputs ideally
suited for driving the capacitance of power FETs at high speeds.
Additional protective features include soft start and undervoltage lockout,
digital current limiting, double pulse inhibit, adjustable dead time and a data
latch for single pulse metering. All digital control ports are TTL and B–series
CMOS compatible. Active low logic design allows easy wired–OR
connections for maximum flexibility. The versatility of this device enables
implementation in single–ended or push–pull switching regulators that are
transformerless or transformer coupled. The SG3526 is specified over a
junction temperature range of 0° to +125°C. 8.0 V to 35 V Operation 5.0 V ±1% Trimmed Reference 1.0 Hz to 400 kHz Oscillator Range Dual Source/Sink Current Outputs: ±100 mA Digital Current Limiting Programmable Dead Time Undervoltage Lockout Single Pulse Metering Programmable Soft–Start Wide Current Limit Common Mode Range Guaranteed 6 Unit Synchronization
