UCC1884 Unitrode Semiconductor, UCC1884 Datasheet
UCC1884
Related parts for UCC1884
UCC1884 Summary of contents
Page 1
... The frequency fold- back, volt-second clamp, cycle-by-cycle current limit, and overcur- rent shutdown provide a rich set of protection features for use in peak current mode pulse width modulators. UCC1884 UCC2884 UCC3884 PRELIMINARY UDG-96026-1 ...
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... Section of Databook for thermal limitations and considerations of packages. CONNECTION DIAGRAMS DIL-16, SOIC-16 (Top View Packages ELECTRICAL CHARACTERISTICS: UCC1884, –40°C to 85°C for the UCC2884, and 0°C to 70°C for the UCC3884 150pF, R VREF, VVS = 0V, CSS = 2.5nF, VDD = 11V, Output no load, T PARAMETER 5V Reference Section VREF ...
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... ELECTRICAL CHARACTERISTICS (cont.): for UCC1884, –40°C to 85°C for the UCC2884, and 0°C to 70°C for the UCC3884 150pF, R VREF, VVS = 0V, CSS = 2.5nF, VDD = 11V, Output no load, T PARAMETER Error Amplifier Section (cont PWM Section Minimum Duty Cycle Maximum Duty Cycle ...
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... When VOUT increases, the frequency increases by OFF increasing the discharge current. The maximum operat- ing frequency occurs when VOUT = 3.5V. The C time is constant to guarantee a maximum output duty cy- cle. This pin must be above 3.0V to allow synchronization to occur. 4 UCC1884 UCC2884 UCC3884 . This is a variable dis VOUT/R . The OFF ...
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... IC is not currently in a soft start cycle bias at the PWM comparator’s non-inverting input and a reset domi- nant PWM latch permit zero duty cycle operation. technique The error amplifier has a wide gain-bandwidth product and its non-inverting input is internally set to 2.5VDC. 5 UCC1884 UCC2884 UCC3884 ...
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... CLKSYNC signal as shown on the Oscillator Synchronization Diagram (Figure 2). The fastest (master) CLKSYNC pin will couple a negative pulse into the slower (slave) CLKSYNC pins forcing the slaves’ CT pins to quickly discharge as shown on the Oscillator Wave- form diagram (Figure 3). 6 UCC1884 UCC2884 UCC3884 UDG-96029-1 UDG-96028-1 ...
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... This guarantees that if a slave unit tries to synchronize the master, the master frequency will still be faster than the slave fre- quency and the master will synchronize all the re- maining units. 7 UCC1884 UCC2884 UCC3884 resistor which pro- resis- OFF ...