SP6415 Datasheet | Sipex Corporation

DESCRIPTION The SP6415 is a dual Boost DC/DC converter, designed to drive up to 4 white LEDs with a constant current and to power an organic LED display with a constant voltage. According to the SEL pin status, the SP6415 either regulates output current flowing through series connected LEDs or regulates output voltage applying to the OLED. A single external resistor is used to set the maximum LED current. The LED current can be adjusted by applying a PWM signal to the EN pin. Pulling the EN pin to GND disables the chip and reduces the supply current to less than 1u A. Additional features include a low-side NFET switch that can turn off the LED string with no DC current path to ground. Other features include OVP, OCP, UVP and OTP. The SP6415 is available in a small (3mmx3mmx0.85mm) DFN-10 package. TYPICAL APPLICATION CIRCUIT V IN 2.7V~4.2V CIN 4.7µ F VIN OVP ILED VFB ILED= RFB CH2 0.2 R FB L 0µ H D Main Display COUT 4.7µF VIN 2.7V~4.2V C IN 4.7 µF L 0 µH Main Display COUT 4.7µF SW OVP CH >.5V 0V Main V SUB SEL GND FB2 EN FB SP6415 ILED CH FB >.5V SP6415 EN CH2 VFB ILED= R FB VSUB C OUT2 4.7µF Main VSUB SEL GND FB2 VFB2 RFB2 0.2 RFB 47p F RSUB 0V OLED SUB Display RSUB2 VSUB    RSUB1  = 1 + ×1.23 RSUB 2    ILED2 ILED2= .23 RFB2 Figure . Main LEDs Display and OLED SUB Display Feb27-07 Rev K Figure 2. 4 LEDs for Main Panel and 3 LEDs for SUB Panel © 2007 Sipex Corporation Integrated White LED Driver With Organic LED Display Power Supply Absolute Maximum Ratings Parameter Input Supply Voltage EN, FB Voltages SW Voltage ESD Classification Symbol VIN VEN ,VFB VSW Maximum 6 VIN 30 A- Unit Caution: Stress above the listed absolute rating may cause permanent damage to the device. - HBM A: 0V ~ V Remended Operating Conditions Parameter Input Supply Voltage Ambient Temperature Range Junction Temperature...