DATASHEET To request the full datasheet, please visit www.intersil.com/products/isl98611 High Efficiency Display Power and LED Driver for Smart Phones ISL98611 Features The ISL98611 is a high efficiency display power supply and LED driver for small size displays such as smart phones. It integrates a boost regulator, LDO and inverting charge pump that are used to generate regulated positive and negative voltages for display power. It also integrates a boost regulator and 3-channel current sinks for the LED backlight driver. The positive and negative output voltages can be adjusted from ±4.5V up to ±6V. • Display power output voltage: ±5V, ±5.6V The ISL98611 extends the battery life of mobile devices by delivering greater than 88% efficiency for the display power function and up to 93% efficiency for the backlight driver when powering 12 LEDs. It reduces PCB area by integrating the two functions into a single IC and by requiring only 8 external components in total. • Analog, PWM and hybrid dimming • Positive and negative voltages can be programmed from ±4.5V to ±6V • >88% efficiency with 12mA load between VP and VN • Up to 93% efficient LED driver • Only 8 external components; integrated compensation and feedback circuits • ±2.2% current matching down to 1mA and ±2.8% at 50μA • Can drive 2 strings of LEDs • 10-bit linear and 11-bit logarithmic DC output current control • I2C, PWM and SWIRE dimming inputs with internal multiplier for CABC This product drives backlight LEDs with excellent current matching even at very low LED current (±2.2% down to 1mA and ±2.8% at 50μA), improving the brightness uniformity of LCD displays. It includes analog, PWM and hybrid dimming to maximize LED efficiency while eliminating color shift issues. • 2.5V to 5V input voltage range • VP and VN output adjustable from ±4.5V up to ±6V with 50mV steps The ISL98611 is offered in a 2.33x2.61mm2 WLCSP package and the device is specified for operation across the -40°C to +85°C ambient temperature range. • I2C adjustable output voltages and settings • 1µA shutdown supply current Applications • RoHS compliant TABLE 1. KEY DIFFERENCES BETWEEN PARTS • TFT-LCD Smart phone displays PART NUMBER • Small size/handheld display VP/VN OPTIONS (V) ISL98611IIZ-T ±5 ISL98611II56Z-T ±5.6 3P6S 30mA/string VIN 2.5V TO 5V CIN 10µF 0402 L2 10µH L1 2.2µH VIN CVLED 4.7µF 0603 LXLED VLED CH0 CH1 CH2 LXBST VBSTCP VBST ISL98611 CP CCP 10µF 0402 CVBST 10µF 0402 FAULT PROCESSOR SWIRE PWMI SCL SDA ENP ENN ENLED CN CVN 10µF 0402 VN VSUB AGND PGND VP -5.0V NEGATIVE SUPPLY LCD PANEL POSITIVE SUPPLY CVP 10µF 0402 +5.0V FIGURE 1. TYPICAL APPLICATION CIRCUIT FOR 3-CHANNEL LED DRIVER April 3, 2015 FN8662.2 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2014, 2015. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL98611 For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 2 FN8662.2 April 3, 2015