AAT3369-1 High Efficiency 1x/1.5x Charge Pump

The AAT3369-1 is a low-noise, constant-frequency charge pump DC/DC converter that uses a dual-mode load switch (1x) and fractional (1.5x) conversion to maximize efficiency for white LED applications. The AAT3369-1 is capable of driving 4 white LEDs at a total of 80mA from a single 2.7V to 5.5V input. The current sinks may be operated individually or in parallel while driving higher-current LEDs. A low external parts count (two 1μF flying capacitors and two small 1μF capacitors at VIN and VOUT) makes the AAT3369-1 ideal for small battery-powered applications. Skyworks' Simple Serial Control (S2Cwire) digital interface is used to enable, disable and set current to one of 32 levels for the LEDs. The AAT3369-1 is equipped with built-in short-circuit and over-temperature protection. The soft-start circuitry prevents excessive inrush current at start-up and mode transitions. The AAT3369-1 family is available in Pb-free, space-saving TSOPJW and TDFN33 packages, and operates over the -40°C to +85°C ambient temperature range.

技术特性

Dual-Mode (1x/1.5x) Charge Pump
Drives up to 4-Channel Backlight LEDs
32-Level Programmable Backlight Current (linear, inverting)
Single-wire S2Cwire Control
Built-in Thermal Protection
Automatic Soft Start
-40°C to +85°C Temperature Range
TSOPJW-12 and TDFN33-12 Packages

订购信息 Ordering Information

AAT3369-1

应用领域 APPLICATION

Cellular and Smart Phones
Digital Still and Video Cameras
• PDAs
Portable Devices
Portable Media Players
Other White LED Backlighting

AAT3369-1 典型应用

应用技术支持与电子电路设计开发资源下载	版本信息	大小
AAT3369-1 数据资料DataSheet下载:pdf	Rev.V2	2 页