開發模組 (EVM) 的 GUI
LM3533
- Drives Two Parallel High-Voltage LED Strings for
Display and Keypad Lighting - High-Voltage Strings Capable of up to 40-V
Output Voltage and up to 90% Efficiency - Up to 30 mA per Current Sink (Both Backlight and
Indicator) - 14-Bit Equivalent Exponential Dimming With 8-Bit
Programmable Backlight Code - Selectable Analog ALS Input with 128
Programmable Gain-Setting Resistors or PWM
ALS Input With Internal Low-Pass Filter - PWM Input for Content Adjustable Brightness
Control - Five Low-Voltage Current Sinks for Indicator LEDs
- Integrated Charge Pump for Improved Efficiency
and VIN Operating Range - Internal Pattern Generation Engine
- Fully Configurable LED Grouping and Control
- Four Programmable Overvoltage Protection
Thresholds (16 V, 24 V, 32 V, and 40 V) - Programmable 500-kHz and 1-MHz Switching
Frequency - 27-mm2 Total Solution Size
The LM3533 is a complete power source for backlight, keypad, and indicator LEDs in smartphone handsets. The high-voltage inductive boost converter provides the power for two series LED strings for display backlight and keypad functions (HVLED1 and HVLED2). The integrated charge pump provides the bias for the five low-voltage indicator LED current sinks (LVLED1 to LVLED5). All low-voltage current sinks can have a programmable pattern modulated onto their output current for a wide variety of blinking patterns.
Additional features include a pulse width modulation (PWM) control input for content adjustable backlight control (CABC), and an ambient light sensor interface (ALS) with an internal 8-bit ADC to provide automatic current adjustment based upon ambient light conditions. Both the PWM and ALS inputs can be used to control any high- or low-voltage current sink.
The LM3533 is fully programmable via an I2C-compatible interface. The device is available in a 20-pin DSBGA and operates over a 2.7-V to 5.5-V input voltage range and a −40°C to +85°C temperature range.
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檢視所有 8 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM3533 Complete Lighting Power Solution for Smartphone Handsets datasheet (Rev. C) | PDF | HTML | 2015年 9月 27日 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 2016年 12月 21日 | ||
| Application note | Inductor Selection in Boost Converters for LCD Backlight Applications | 2016年 10月 24日 | ||
| Application note | Schottky Diode Selection in Asynchronous Boost Converters | 2016年 9月 6日 | ||
| User guide | AN-2250 LM3533 Evaluation Kit (Rev. B) | 2013年 4月 30日 | ||
| User guide | AN-2250 LM3533 Evaluation Kit | 2012年 6月 21日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
LM3533EVAL — LM3533 評估模組
The LM3533 Evaluation Module (LM3533EVM) is designed to fully evaluate the LM3533 Dual String backlight driver + 5 indicatorLED driver. The LM3533EVM consists of the National Semiconductor USB Interface Board and the LM3533 EvaluationBoard. The Texas Instruments USB Interface Board Rev 1.1 provides (...)
使用指南: PDF
驅動程式或資料庫
LM3533SW-LINUX — 適用於 LM3533 的 Linux 驅動程式
The Linux driver supports the LM3533 Complete lighting solution for smartphone handsets. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- (...)
模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFQ) | 20 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
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建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。