1 datasheet to request the full datasheet, please visit www.intersil.com/products/ISL98611A high efficiency display power and led driver for smart phones ISL98611A the ISL98611A 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 two output rails for the display power: +5v (default) and -5v (def ault). it also integrates a boost regulator and 3-channel current sinks for the led backlight driver. the 5v output voltages can be adjusted from 4.5v up to 6v. ISL98611A extends the battery life of mobile devices by delivering greater than 87% efficiency for the display power function. for a backlight driver ISL98611A uses nonsynchronous rectification and by using a 3-channel topology ISL98611A provides more than 90% efficiency. ISL98611A integrates all co mpensation and feedback components, which minimizes bom count and reduces the solution pcb size. this product drives backlight leds with excellent current matching even at very low led current (2.2% down to 1ma), improving the brightness uniformity of lcd displays. it includes analog, pwm and hybrid dimming to maximize led efficiency while eliminating color shift issues. the ISL98611A is offered in a 2.33x2.61mm 2 wlcsp package, and the device is specified for operation across the -40c to +85c ambient temperature range. features ? >87% efficiency with 12ma load between vp and vn ? more than 90% efficient led driver ? only 9 external components; integrated compensation and feedback circuits ? analog, pwm and hybrid dimming ? 2.2% current matching down to 1ma ? can drive 2 or 3 strings of leds ? 35v maximum vled voltage ? 10-bit linear and 11-bit logarithmic dc output current control ?i 2 c, pwm and swire dimming inputs with internal multiplier for cabc ? 2.5v to 5v input voltage range ? vp and vn output adjustable from 4.5v up to 6v with 50mv steps ?i 2 c adjustable output voltages and settings ? 1a shutdown supply current ? pb-free (rohs compliant) applications ? tft-lcd smart phone displays ? small size/handheld display figure 1. typical application circuit for 3-channel led driver c in 10f 0402 lxbst agnd pgnd vin vbst l 1 2.2h v in 2.5v to 5v vbstcp vled ch0 ch1 ch2 lxled l 2 10h c vled 4.7f 0603 -5.0v negative supply positive supply +5.0v lcd panel c vbst 10f 0402 c vn 10f 0402 c cp 10f 0402 c vp 10f 0402 scl sda enp enn processor cp vn cn vsub vp pwmi enled swire fault 3p6s 30ma/string ISL98611A 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 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. july 29, 2015 fn8742.1
ISL98611A 2 intersil products are manufactured, assembled and tested utilizing iso9001 quality systems as noted in the quality certifications found at www.intersil.com/en/suppor t/qualandreliability.html intersil products are sold by description only. intersil corporat ion reserves the right to make changes in circuit design, soft ware 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 responsi bility is assumed by intersil or its subsid iaries for its use; nor for any infringem ents 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 i ntersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com fn8742.1 july 29, 2015 for additional products, see www.intersil.com/en/products.html submit document feedback
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