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UC2525A Datasheet(PDF) 5 Page - Texas Instruments |
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UC2525A Datasheet(HTML) 5 Page - Texas Instruments |
5 / 17 page ![]() www.ti.com +VIN 15 Q3 Q4 Q2 Q1 1 2 Inv Input NI Input 200 mA 100 mA 5.8 V 100 W Comp 9 to PWM Comparator UC1525A, UC1527A UC2525A, UC2527A UC3525A, UC3527A SLUS191C – FEBRUARY 1997 – REVISED JANUARY 2008 ELECTRICAL CHARACTERISTICS (continued) +VIN = 20 V, and over operating temperature, unless otherwise specified, TA = TJ PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PWM COMPARATOR Minimum duty-cycle 0% Maximum duty-cycle 45% 49% Zero duty-cycle 0.7 0.9 Input threshold(4) V Maximum duty-cycle 3.3 3.6 Input bias current(4) 0.05 1.0 µA SHUTDOWN Soft-start current VSD = 0 V, VSS = 0 V 25 50 80 µA Soft-start low level VSD = 2.5 V 0.4 0.7 V Shutdown threshold To outputs, VSS = 5.1 V, TJ = 25°C 0.6 0.8 1.0 Shutdown input current VSD = 2.5 V 0.4 1.0 mA Shutdown Delay(5) VSD = 2.5 V, TJ = 25°C 0.2 0.5 µs OUTPUT DRIVERS (each output) (VC = 20 V) ISINK = 20 mA 0.2 0.4 Low-level output voltage ISINK = 100 mA 1.0 2.0 ISOURCE = 20 mA 18 19 V High-level output voltage ISOURCE = 100 mA 17 18 Undervoltage lockout VCOMP and VSS = High 6 7 8 VC OFF Current (6) VC = 35 V 200 µA Rise Time(5) CL = 1 nF, TJ = 25°C 100 600 ns Fall Time(5) CL = 1 nF, TJ = 25°C 50 300 TOTAL STANDBY CURRENT Supply Current VIN = 35 V 14 20 mA (4) Tested at fOSC = 40 kHz (RT = 3.6 kΩ, CT = 0.01 µF, RD = 0 Ω. (5) These parameters, although ensured over the recommended operating conditions, are not 100% tested in production. (6) Collector off-state quiescent current measured at pin 13 with outputs low for UC1525A and high for UC1527A. UC1525A Error Amplifier Copyright © 1997–2008, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): UC1525A, UC1527A UC2525A, UC2527A UC3525A, UC3527A |
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