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BL8584 Dataheets PDF



Part Number BL8584
Manufacturers BELLING
Logo BELLING
Description 6-Channels WLED Linear Driver
Datasheet BL8584 DatasheetBL8584 Datasheet (PDF)

DESCRIPTION The BL8584 is a CMOS based White/Blue LED driver with stand-alone capability. The driver is primarily designed for LED backlighting of LCD display powered by Li-ion battery With its high efficiency, low standby current and wide range of input supply voltage, the BL8584 is suitable for applications such as portable device display and keypad backlighting. There are six identical channels in BL8584, each of which can drive one LED by current rating of 20mA. BL8584 is available with QFN .

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DESCRIPTION The BL8584 is a CMOS based White/Blue LED driver with stand-alone capability. The driver is primarily designed for LED backlighting of LCD display powered by Li-ion battery With its high efficiency, low standby current and wide range of input supply voltage, the BL8584 is suitable for applications such as portable device display and keypad backlighting. There are six identical channels in BL8584, each of which can drive one LED by current rating of 20mA. BL8584 is available with QFN 3X3-16 package TYPICAL APPLICATION BL8584 6-Channels WLED Linear Driver FEATURES • 6-channels output • 2.7 to 5.5V input range • PWM dimming control • LED sink current of 20mA • Independent current sink circuit for each LED output • Low standby current • High accuracy current match on each channel APPLICATIONS • LCD screen backlights driver • Mobile phone, portable device keypad backlights driver PIN ASSIGNMENT BL8584 BLOCK DIAGRAM www.belling.com.cn 1 MARKING INFORMATION Product Classification Marking BL8584CJKTR KC: Product Code KC LLNYW LL: LOT No. N: FAB Code Y: Year No. W: Week No. Top view BL8584 6-Channels WLED Linear Driver ORDERING INFORMATION BL8584 □1 □2 □3 Code □1 □2 □3 Description Temperature&Rohs: C: -40~85°C, Pb Free Rohs Std. Package type: JK: QFN 3X3 –16 Packing type: TR:Tape&Reel (Standard) PIN DESCRIPTION Name D1-D6 EN VIN GND NC Function Description RGB or WLED Cathode Connection Pin Chip Enable and Dimming Control. Pin15 and Pin16 both are EN pins, they are shorted internally, so please don’t connect one of them to GND Power Supply Ground Not Connected ABSOLUTE MAXIMUM RATING Supply voltage Voltage of LEDn, EN pin Maximum Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec) –0.3V to 7V –0.3V to 7V 125°C –40°C to 85°C –40°C to 150°C 260°C Note: Exceed these limits to damage to the device. Note: Exposure to absolute maximum rating conditions may affect device reliability. RECOMMENDED OPERATING CONDITIONS Items Supply Voltage Range Operating Temperature MIN MAX Unit 2.7 5.5 V -25 85 °C www.belling.com.cn 2 BL8584 ELECTRICAL CHARACTERISTICS VCC=3.7V, Ta=25°C, No Load, Input: VEN=3.7V. (Unless otherwise noted) Symbols VIL VIH IIL IIH VLEDL ILED ILEDn IQ ISTBY Parameters EN Pin “Low” Logic EN Pin “High” Logic EN Pin “Low” Input Current EN Pin “High” Input Current LEDn Dropout Voltage LEDn Sink Current LEDn Sink Current Deviation Quiescent Current Standby Supply Current Conditions MIN 1.7 -1 VEN=”0” 18 -5 SPEC TYP 100 20 500 0.5 MAX 0.4 1 22 5 800 Unit V V uA uA mV mA % uA uA DETAILED DESCRIPTION BL8584 works with a wide range of supply voltage, from 2.7V to 6V. The forward voltage of commercial white/blue LED is in the range of 2.9V to 3.5V at a current level of 20mA. Proper selection of the LED to match the supply voltage can fully utilize the Li-ion battery. For example, there is 1% ~ 3 % power left in the Li-ion battery when it.


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