R1294L102A-E2 Nisshinbo

R1294L Series 3 ch DC/DC for TFT LCD No. EA-368-210514 OUTLINE The R1294L is the optimized DC/DC converter IC for TFT LCD displays. R1294L 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 Input Voltage Range (Maximum Rating) R1294L101A: 2.0 V to 5.5 V (6.5 V) R1294L102A: 2.5 V to 5.5 V (6.5 V) R1294L103A: 3.3 V to 5.5 V (6.5 V) Temperature Coefficient of VFB (V /T) Typ. 150 ppm/C (40C Ta 95C) FB Temperature Coefficient of VREF (V /T) Typ. 150 ppm/C REF Temperature Coefficient of CPPFB (V /T) Typ. 150 ppm/C (40C Ta 95C, CPVCC = 9 V) PFB Step-up DC/DC Controller Built-in 2 A Nch-switch (R = 150 m Typ.) ON Overcurrent Protection Adjustable V up to 20 V with external resistors OUT Adjustable Phase compensation with external components Maxduty adjustable with external resistors for DTC pin Soft-start time adjustable with external capacitor for SS pin Oscillator Frequency: Adjustable frequency with resistors (210 kHz to 1400 kHz) Charge-pump 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 adjustable by setting delay time for each channel Oscillator Frequency: 1/4 of the main step-up DC/DC converter oscillator frequency Controller Under Voltage Lock-Out (UVLO: selectable detector threshold from 1.8 V/2.2 V/2.8 V) Reference Voltage (VREF: Typ.1.2 V) Short Protection with timer latch function (adjustable delay time with external capacitor) Shutdown all the outputs if at least one of three outputs is shorted to the GND. Stand-by function by CE pin Package Thin 24-pin package QFN0404-24B 1 R1294L No. EA-368-210514 APPLICATIONS Power source for hand-held equipment Power source for LCD and CCD SELECTION GUIDE The UVLO threshold voltage is user-selectable. Package Quantity per Reel Pb Free Halogen Free Product Name R1294L10xA-E2 QFN0404-24B 1,000 pcs Yes Yes x: Specify the UVLO threshold voltage 1: 1.8 V 2: 2.2 V 3: 2.8 V 2