High Efficiency Display Power and LED Driver for Smart Phones
跳转至页面部分：
Back to top
扩展 ECAD 模块
概览
描述
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. 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 the PCB area by integrating the two functions into a single IC and by requiring only eight external components in total. 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. 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.
特性
- Display power output voltage: ±5V, ±5.6V
- 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
- Analog, PWM, and hybrid dimming
- ±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
- 2.5V to 5V input voltage range
- VP and VN output adjustable from ±4.5V up to ±6V with 50mV steps
- I2C adjustable output voltages and settings
- 1μA shutdown supply current
- RoHS compliant
应用
应用
- TFT-LCD Smart phone displays
- Small size/handheld display
设计和开发
软件与工具
模型
ECAD 模块
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
产品选择
Processing table
| Reel | 3000 | |||
| Reel | 3000 |
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product