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UC2823ADWTRTIN/a2900avaiHigh Speed PWM Controller
UC2823ANTIN/a5000avaiHigh Speed PWM Controller
UC2823ADWTIN/a1514avaiHigh Speed PWM Controller


UC2823AN ,High Speed PWM ControllerSLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010These devices have limited built-in ESD protection. ..
UC2823BDW ,High Speed PWM Controller UC2825A, UC2825B, UC3825A, UC3825BSLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010TERMINAL FUNCTION ..
UC2823BDW ,High Speed PWM ControllerSLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010These devices have limited built-in ESD protection. ..
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ULN7003A , HIGH-VOLTAGE, HIGH-CURRENT DARLINGTON ARRAY
ULN7003A , HIGH-VOLTAGE, HIGH-CURRENT DARLINGTON ARRAY
ULQ2001 ,SEVEN DARLINGTON ARRAYSULQ2001A - ULQ2003AULQ2002A - ULQ2004A®SEVEN DARLINGTON ARRAYS. SEVEN DARLINGTONS PER PACKAGE. EXTE ..
ULQ2001A ,EIGHT DARLINGTON ARRAYSABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV Output Voltage 50 VoV Input Voltage (for ULQ20 ..
ULQ2003 ,7-Channel High-Current Darlington ArrayABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV Output Voltage 50 VoV Input Voltage (for ULQ20 ..
ULQ2003A ,7-Channel High-Current Darlington ArrayULQ2001A - ULQ2003AULQ2002A - ULQ2004A®SEVEN DARLINGTON ARRAYS. SEVEN DARLINGTONS PER PACKAGE. EXTE ..


UC2823ADW-UC2823ADWTR-UC2823AN
High Speed PWM Controller
UC1823A, UC2823A, UC2823B,
UC3823A, UC3823B, UC1825A,
UC2825A, UC2825B, UC3825A, UC3825B
SLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010
HIGH-SPEED PWM CONTROLLER
FEATURES
Improved Versions of the UC3823/UC3825PWMs Compatible with Voltage-Mode orCurrent-Mode Control Methods Practical Operation at Switching Frequenciesto 1 MHz 50-ns Propagation Delay to Output High-Current Dual Totem Pole Outputs(2-A Peak) Trimmed Oscillator Discharge Current Low 100-μA Startup Current Pulse-by-Pulse Current Limiting Comparator Latched Overcurrent Comparator With FullCycle Restart
DESCRIPTION

The UC3823A and UC3823B and the UC3825A andUC3825B family of PWM controllers are improved
versions of the standard UC3823 and UC3825 family.Performance enhancements have been made to several
of the circuit blocks. Error amplifier gain bandwidth productis 12 MHz, while input offset voltage is 2 mV . Current limitthreshold is assured to a tolerance of 5%. Oscillator
discharge current is specified at 10 mA for accurate deadtime control. Frequency accuracy is improved to 6%.
Startup supply current, typically 100 μA, is ideal for off-lineapplications. The output drivers are redesigned to actively
sink current during UVLO at no expense to the startupcurrent specification. In addition each output is capable of
2-A peak currents during transitions.
BLOCK DIAGRAM
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