UCC3808-1

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCC2808-1, UCC2808-2, UCC3808-1, UCC3808-2 SLUS168E – APR 1999 – REVISED AUGUST 2015 UCCx808-x Low Power Current Mode Push-Pull PWM 1 Features 1 Dual Output Drive Stages in Push-Pull Configuration 130-μA Typical Starting Current 1-mA Typical Run Current Operation to 1-MHz Internal Soft-Start On-Chip Error Amplifier With 2-MHz Gain Bandwidth Product On-Chip VDD Clamping Output Drive Stages Capable Of 500-mA Peak Source Current, 1-A Peak Sink Current 2 Applications Server and Desktop Power Supplies Telecom Power Supplies DC-DC Converters Switched-Mode Power Supplies 3 Description The UCCx808-x is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCCx808 contains all of the control and drive circuitry required for offline or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count. The UCCx808-x dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) UCC2808-1 UCC2808-2 UCC3808-1 UCC3808-2 SOIC (8) PDIP (8) 4.90 mm × 3.91 mm 9.81 mm × 6.35 mm (1) For all ...