R1280D002B Description
R1280D002x SERIES 2CH PWM DC/DC CONTROLLER NO.EA-086-160125 OUTLINE The R1280D002x Series are CMOS-based 2-channel PWM Step-up (as Channel 1)/Inverting (as Channel 2) DC/DC converter controllers. Each of the R1280D002x Series consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a reference current unit, a protection circuit, and an under voltage lockout (UVLO) circuit. A...
R1280D002B Key Features
- Input Voltage Range
- 2.5V to 5.5V
- Built-in Latch-type Protection Function by monitoring duty cycle (Fixed Delay Time Typ. 100ms)
- Oscillator Frequency
- 700kHz (R1280D002A,B)/200kHz (R1280D002C)
- Maximum Duty Cycle
- Typ. 90% (Only applied to R1280D002B Series)
- High Reference Voltage Accuracy
- U.V.L.O. Threshold
- Typ. 2.2V (Hysteresis: Typ. 0.1V)
R1280D002B Applications
- Constant Voltage Power Source for Portable Equipment
- Constant Voltage Power Source for LCD and CCD