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 compensation with external components 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 (180kHz~1400kHz).
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R1290K SERIES
3ch DC/DC for TFT LCD
No.EA-154-210517
OUTLINE
The R1290 series are the optimized DC/DC converter ICs for TFT LCD displays. Each of the R1290 series contains one PWM step-up DC/DC converter controller and two diode charge-pump controllers. The charge-pumps can control a boost output and a negative output and have the output voltage regulation function with external resistors.
The power on sequence can be made with setting the delay time with external capacitors for each charge pump channel.
FEATURES • Operating Voltage Range ...................................... 2.0V ~ 5.5V
• Step-up DC/DC controller part
Internal 2A capability Nch MOSFET Driver (RON=150mΩ Typ.
R1290K Datasheet
