Description
The FP6791C is a CMOS step-up switching controller incorporates a reference voltage circuit, an oscillator, an error amplifier, a PWM controller an under voltage lockout circuit (UVLO) and a timer latch short-circuit protection circuit
The switching frequency can be controlled by the resistor connected to the ROSC pin and the maximum duty ratio can be controlled by the resistor connected to the RDUTY pin
In addition, the FP6791C provides adjustable shortcircuit protection delay time with an external capacitor connected to the CSP pin If the maximum duty condition continues because of short-circuiting, the capacitor externally connected to the CSP pin is charged, and oscillation stops after a specific time This condition is cleared by re-application of power This controller IC allows various settings and employs a small package, making it very easy to use
Features
Programmed Switching Frequency
Programmed Maximum Duty Ratio
Reference Voltage ： 1 0V ±1 5%
UVLO (Under-Voltage Lockout) Function
▪ Detection Voltage 2 2V
▪ Hysteresis Width 0 3V
Timer Latch Short-Circuit Protection Circuit Delay Time Set by an External Capacitor
Internal Soft-Start Function
External Compensation Network
Small Package 8-pin TSSOP
RoHS Compliant
Applications
LCD Panel
Portable Equipments
