Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN Package

General Description The MAX8901A/MAX8901B step-up converters drive from two to six series-connected white LEDs (WLEDs) with constant current to provide uniform WLED intensity for LCD backlighting in cell phones, PDAs, and other handheld devices. The MAX8901_ operate at a fixed 750kHz (typ) switch

效率最高的2至6只串联WLED供电电源，2mm x 2mm TDFN封装

MAX8901A/MAX8901B升压转换器能够以固定电流驱动2至6只串联白光LED (WLED)，为手机、PDA和其它手持设备提供亮度均匀的WLED驱动，用于LCD背光。MAX8901_工作在750kHz (典型值)固定开关频率，允许采用小尺寸外部元件，经过优化处理能够在1节锂离子/锂聚合物电池的整个电压范围保持最高效率。\n\n 这两款转换器采用单个输入(ON)使能IC并控制WLED亮度。MAX8901A采用直接PWM输入调节LED亮度，LED电流正比于PWM占空比。MAX8901B采用单线、串行脉冲调光，提供32级线性调节的LED亮度。利用脉冲串调光时，满量程LED电流为24. • 效率高达91% \n• 2.6V至5.5V输入电压范围\n• 固定频率工作模式\n• 能够驱动2至6只串联WLED，1.3% LED电流精度\n• 灵活的调光控制\n• 直接PWM调光(MAX8901A)\n• 32级、单线串行调光(MAX8901B)\n\n\n• 输入欠压锁存\n• 输入过压锁存\n• WLED过压保护(25V典型值)\n• 0.01µA (典型值)关断电流\n• 关断模式下没有WLED电流\n• 内部软启动和热关断;

Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN Package

General Description The MAX8901A/MAX8901B step-up converters drive from two to six series-connected white LEDs (WLEDs) with constant current to provide uniform WLED intensity for LCD backlighting in cell phones, PDAs, and other handheld devices. The MAX8901_ operate at a fixed 750kHz (typ) switch

Highest Efficiency Supply for 2 to 6 Series WLEDs in a 2mm x 2mm TDFN Package

文件：303.04 Kbytes Page：14 Pages

封装/外壳：8-WFDFN 裸露焊盘 包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 描述：IC LED DRVR RGLTR PWM 25MA 8TDFN 集成电路（IC） LED 驱动器

CCD Clock Driver

Overview The LB8901M is a monolithic IC designed to drive large-capacity clock gates of a CCD image sensor (LC9900 series) at a high speed. Features • Capable of driving large-capacity gates of a CCD, etc. • On-chip eight-block driver, two of which are capable of providing drive on the three-v

CCD Clock Driver

Overview The LB8901M is a monolithic IC designed to drive large-capacity clock gates of a CCD image sensor (LC9900 series) at a high speed. Features • Capable of driving large-capacity gates of a CCD, etc. • On-chip eight-block driver, two of which are capable of providing drive on the three-v

Digital Audio Interface Receiver

Overview The LC8901 and LC8901Q are LSIs for use in IEC958, EIAJ CP-1201 format data transmission between digital audio equipment. These LSIs are used on the receiving side, and handle synchronization with the input signal and demodulation of that signal to a normal format signal. Features • On

Digital Audio Interface Receiver

Overview The LC8901 and LC8901Q are LSIs for use in IEC958, EIAJ CP-1201 format data transmission between digital audio equipment. These LSIs are used on the receiving side, and handle synchronization with the input signal and demodulation of that signal to a normal format signal. Features • On

Wideband, Ring Demodulator

DESCRIPTION The SD8901 is a ring demodulator/balanced mixer. Designed to utilize Calogic’s ultra high speed and low capacitance lateral DMOS process. The SD8901 offers significant performance improvements over JFET and diode balanced mixers when low third order harmonic distortion has been a prob