UCC28085
FEATURES
D Programmable Slope pensation D Internal Soft-Start on the UCC38083/4 D Cycle-by-Cycle Current Limiting D Low Start-Up Current of 120 µA and 1.5 m A
Typical Run Current
D Single External ponent Oscillator
Programmable from 50 k Hz to 1 MHz
D High-Current Totem-Pole Dual Output Stage
Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability
D Current Sense Discharge Transistor to
Improve Dynamic Response
D Internally Trimmed Bandgap Reference D Undervoltage Lockout with Hysteresis
BASIC APPLICATION
V IN
VDD UCC3808x
CTRL OUTA
RT OUTB
ISET
RT R SET
POWER TRANSFORMER
RF CF RS
FEEDBACK
APPLICATIONS
D High-Efficiency Switch-Mode Power Supplies D Tele dc-to-dc Converters D Point-of-Load or Point-of-Use Power Modules D Low-Cost Push-Pull and Half-Bridge
Applications
DESCRIPTION
The UCC38083/4/5/6 is a family of Bi CMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual...
