R1290K
FEATURES
- Operating Voltage Range 2.0V ~ 5.5V
- Step-up DC/DC controller part
Internal 2A capability Nch MOSFET Driver (RON=150mΩ Typ.) Over Current Protection Function Adjustable VOUT up to 20V with external resistors Adjustable Phase pensation with external ponents Max duty adjustable with external resistors for DTC pin Soft-start time adjustable with external capacitor for SS pin Oscillator Frequency: Adjustable frequency with resistors (180k Hz~1400k Hz)
- Charge-pump part
Adjustable output voltage with external resistors Sequence function: Charge-pump turns on after the main step-up converter voltage outputs. The positive charge-pump and the negative charge-pump turn on sequence control is possible with setting delay time for each channel Oscillator Frequency: 1/4 of the main step-up DCDC converter oscillator frequency
- Controller part
Under Voltage Lock-Out (UVLO: selectable detector threshold from 1.8V, 2.2V or 2.8V) Reference voltage...
