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AX2016 Dataheets PDF



Part Number AX2016
Manufacturers AXElite
Logo AXElite
Description Boost
Datasheet AX2016 DatasheetAX2016 Datasheet (PDF)

AX2016/A 40V, 1.7A, Boost for 10 White LED Driver  GENERAL DESCRIPTION The AX2016/A is a step-up converter designed for driving up to 10 series white LEDs for backlighting application. The AX2016/A uses current mode, 1MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage c.

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AX2016/A 40V, 1.7A, Boost for 10 White LED Driver  GENERAL DESCRIPTION The AX2016/A is a step-up converter designed for driving up to 10 series white LEDs for backlighting application. The AX2016/A uses current mode, 1MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The AX2016/A includes under-voltage lockout, current limiting and thermal shutdown protection preventing damage in the event of an output overload. The driver is available in small 6-pin TSOT-23 and 8-pin TDFN (2mm x 2mm) packages.  FEATURES 2.5V to 5.5V operating input voltage range Drives up to 10 series White LEDs 1MHz Fixed Switching Frequency Wide range for PWM dimming •yÑb€ (200Hz to 200KHz) R ` Internal 1.7A switching Ûmwcurrent limit om V Over Voltage Protection (OVP) h.c tec Internal Soft-start Function o f .go shutdown protection Current limit and Thermal w w Under voltage w Lockout Available in the 6-pin TSOT-23 and 8-pin TDFN Packages 1/11 Axelite Confidential Materials, do not copy or distribute without written consent. AX2016/A  BLOCK DIAGRAM VCC EN UVLO Reference 1.238V Soft Start Enable Logic 10ms OVP Shutdown OV 300mV FB Error Amplifier Summing Comparator Thermal Shutdown SW Control and Driver Logic N-MOS Oscillator 1MHz GND Slope Compensation Current Sense  PIN ASSIGNMENT The packages of AX2016/A are TSOT-23-6L and TDFN-8L; the pin assignment is given by: GND 1 VCC 2 (GND) 8 7 SW NC FB GND OV 3 EN 4 VÛmw`R•yÑb€ 6 5 Name GND VCC OV EN Description Ground Pin Power Input Pin OVP Sense Pin Enable with Dimming Pin; Internal Pull-Low; Logic High Active Feedback Pin; Put a Resistor to GND to Setting the Current No Connect Pin Switch Output Pin TDFN-8L (2*2) (Top View) w.goftechm SW GND FB 1 2 3 TSOT-23-6L 6 5 4 VCC OV EN FB NC SW 2/11 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.0 Nov.26, 2012 AX2016/A  ORDER/MARKING INFORMATION Order Information AX2016X XX X FB Type BLANK: 0.3V A: 0.2V Package Type Packing Blank : Bag CT: TSOT-23-6L Z8: TDFN-8L (2*2) A : Taping J C Y WX Top Marking (TSOT-23-6L) ID Code: Internal J D Y WX Week: 01~26(A~Z) 27~52(a~z) Year : A = 2010 1 = 2011 2 = 2012 : : 9 = 2019 ID Code: Internal Week: 01~26(A~Z) 27~52(a~z) Year : A = 2010 1 = 2011 2 = 2012 : : 9 = 2019 AX2016 AX2016A Top Marking (TDFN-8L) JC YWX AX2016 ID Code: Internal Week: 01~26(A~Z) 27~52(a~z) Year : A = 2010 1 = 2011 2 = 2012 : : 9 = 2019 JD YWX  ABSOLUTE MAXIMUM RATINGS o (at m T =25°C) .c A h c Characteristicste Symbol VCC Pin Voltage SW Pin Voltage OV Pin Voltage EN, FB Pin Voltage Power Dissipation Storage Temperature Range Operating Junction Temperature Range Thermal Resistance from Junction to TSOT-23-6L case TDFN-8L Thermal Resistance from Junction to TSOT-23-6L ambient TDFN-8L PD TST TOP θJC θJA VÛm •y w`R Ñb€ AX2016A ID Code: Internal Week: 01~26(A~Z) 27~52(a~z) Year : A = 2010 1 = 2011 2 = 2012 : : 9 = 2019 fo .go w ww Rating -0.3 to 6 -0.3 to 45 -0.3 to 45 -0.3 to 6 ( TJ-TA ) / θJA -65 to +150 -40 to +125 180 25 250 120 Unit V V V V mW °C °C °C/W °C/W VCC VSW VOV Note: θJA is measured with the PCB copper area of approximately 1 in2 (Multi-layer). 3/11 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.0 Nov.26, 2012 AX2016/A  ELECTRICAL CHARACTERUSTICS (VCC=5V, IOUT = 20mA, TA = 25°C, unless otherwise noted) Characteristics Symbol Conditions Input Voltage Range Step-Up Voltage Range OV Sense Voltage Under Voltage Lockout UVLO Hysteresis Feedback Voltage EN Threshold EN Hysteresis Operating Quiescent Current ICCQ IOUT= 0mA, VFB =0.5V Shutdown Current ISD VEN=0V, tEN > 20ms N-Channel MOSFET Current Limit ILIM Duty=50% (Note1) € b Ñ •y MOSFET On-Resistance (Note1) w`R RDS(on) Maximum Duty Cycle Line Regulation Switching Frequency Dimming Clock Rate FB Input Leakage Current SW Leakage Current EN Input Leakage Current Shutdown Delay Thermal Shutdown Thermal Shutdown Hysteresis Note1: Guaranteed by design. AX2016 AX2016A Logic-High Voltage Logic-Low Voltage VFB VFB VIH VIL VCC VOUT VOV UVLO Rising Min Typ Max Units 2.5 3 38 2.2 100 2.4 5.5 40 V V V V mV 285 300 315 mV 190 200 210 mV 2.0 200 1 1.7 0.75 0.2 VLX = 30V, VFB =0.5V 0.6 88 1 1 1.5 10 160 30 0.4 4 1.0 V V mV μA μA A Ω % % 300 500 VÛm ww o w.g c fote . D MAX h FOSC FDIM com VCC = 3V to 5V 1.25 MHz 200 KHz nA µA μA μA mS °C 1 3 1 - IFB-LKG VFB = 0.5V ISWL IEN-LKG1 VEN= VCC IEN-LKG2 VEN= GND TSHDN TSD TSH 0.01 100 4/11 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.0 Nov.26, 2012 AX2016/A  APPLICATION CIRCUIT (1) 10 series LED application (2) LED Dimming applicationÑb€ w`R m Û V w •y ww fo o g . te c.


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