View AX2016_7768895.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a 40v, 1. 7 a, boost for 10 white led driver ? general description the AX2016/a is a step - up conver ter designed for driving up to 10 series white leds for backlighting application . the AX2016/a uses current mode, 1m h z fixed frequency architecture to regulate th e led current, which is set through an external current sense resistor. its low 300 mv 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 du e 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) pa ckages. ? features - 2. 5 v to 5 . 5 v operating input voltage range - drives up to 10 series white leds - 1m hz fixed switching frequency - wide range for pwm dimming (200hz to 200khz) - i nternal 1. 7 a switching current limit - over voltage protection (ovp) - internal soft - st art function - c urrent limit and thermal shutdown protect ion - under voltage lockout - available in the 6 -pin tsot- 23 and 8 - pin tdfn package s v?mw`r?y?b? www.gofotech.com
2/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? b lock d iagram ? pin assignment the package s of AX2016/a are tsot - 23- 6l an d tdfn - 8 l ; the pin assignment is given by : name description gnd ground pin vcc power i nput p in ov ovp sense pin en enable with dimming pin; internal pull - low; logic high active fb feedback p in ; put a resistor to gnd to setting the current nc no connect pin sw switch o utput p in v c c s w c o n t r o l a n d d r i v e r l o g i c e n r e f e r e n c e 1 . 2 3 8 v s o f t s t a r t c u r r e n t s e n s e s l o p e c o m p e n s a t i o n o s c i l l a t o r 1 m h z f b e r r o r a m p l i f i e r s u m m i n g c o m p a r a t o r t h e r m a l s h u t d o w n e n a b l e l o g i c g n d n - m o s 1 0 m s 3 0 0 m v s h u t d o w n o v p o v u v l o tdfn - 8 l ( 2 * 2 ) 1 2 3 4 5 6 7 8 gnd sw ( gnd ) nc fb gnd vcc ov en ( t o p v i e w ) t s o t - 2 3 - 6 l 3 2 6 4 1 g n d v c c s w o v 5 f b e n v?mw`r?y?b? www.gofotech.com
3/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? order/marking information order information top marking (tsot - 23 - 6l) top marking (tdfn - 8l) ? absolute maximum ratings (at t a =25c) characteristics symbol rating unit v cc pin voltage v cc - 0.3 to 6 v sw pin voltage v sw - 0.3 to 45 v ov pin voltage v ov - 0.3 to 45 v en , f b pin voltage - 0.3 to 6 v power dissipation pd ( t j - t a ) / ja mw storage temperature range t st - 65 to +150 c operating junction temperature range t op - 40 to + 125 c thermal resistance from junction to case tsot - 23 - 6l jc 180 c /w tdf n - 8 l 25 thermal resistance from junction to ambient tsot - 23 - 6l ja 250 c /w tdfn - 8 l 120 note: ja is measured with the pcb copper area of approximately 1 in 2 (multi - layer). x x x p a c k a g e t y p e p a c k i n g b l a n k : b a g a : t a p i n g c t : t s o t - 2 3 - 6 l z 8 : t d f n - 8 l ( 2 * 2 ) a x 2 0 1 6 x f b t y p e b l a n k : 0 . 3 v a : 0 . 2 v j a x 2 0 1 6 w e e k : 0 1 ~ 2 6 ( a ~ z ) 2 7 ~ 5 2 ( a ~ z ) y e a r : a = 2 0 1 0 1 = 2 0 1 1 2 = 2 0 1 2 i d c o d e : i n t e r n a l c y w x : : 9 = 2 0 1 9 j a x 2 0 1 6 a w e e k : 0 1 ~ 2 6 ( a ~ z ) 2 7 ~ 5 2 ( a ~ z ) y e a r : a = 2 0 1 0 1 = 2 0 1 1 2 = 2 0 1 2 i d c o d e : i n t e r n a l d y w x : : 9 = 2 0 1 9 a x 2 0 1 6 y e a r : a = 2 0 1 0 1 = 2 0 1 1 2 = 2 0 1 2 w e e k : 0 1 ~ 2 6 ( a ~ z ) 2 7 ~ 5 2 ( a ~ z ) i d c o d e : i n t e r n a l y w x j c : : 9 = 2 0 1 9 a x 2 0 1 6 a y e a r : a = 2 0 1 0 1 = 2 0 1 1 2 = 2 0 1 2 w e e k : 0 1 ~ 2 6 ( a ~ z ) 2 7 ~ 5 2 ( a ~ z ) i d c o d e : i n t e r n a l y w x j d : : 9 = 2 0 1 9 v?mw`r?y?b? www.gofotech.com
4/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? electrical characterustics ( v cc =5 v, i out = 20ma , t a = 25c , unless othe rwise noted) characteristics symbol conditions min typ max units input voltage r ange v cc 2. 5 - 5 . 5 v step - up voltage range v out 3 - 4 0 v ov sense voltage v ov 38 v under voltage lockout u vlo rising - 2.2 2.4 v uvlo hysteresis - 1 00 - m v feedbac k voltage AX2016 v fb 285 300 315 mv AX2016a v fb 190 200 210 mv en threshold logic - high voltage v ih 2 . 0 - - v logic - low voltage v il - - 0.4 v en hysteresis - 200 - m v operating q uiescent c urrent i ccq i out = 0ma, v fb =0.5v - 300 500 a shutdown c urrent i sd v en =0v, t en > 20ms - 1 4 a n - c hannel mosfet c urrent l imit (note1) i lim duty=50% 1. 7 - a mosfet o n - r esistance (note1) r ds(on) - 0.6 1.0 maximum duty cycle d max - 88 - % line regulation v cc = 3 v to 5v - 1 - % switching f r equency f osc 0.75 1 1 .25 m hz dimming clock rate f dim 0.2 - 200 khz fb input leakage current i fb - lkg v fb = 0.5v - 0 .01 100 n a sw leakage current i swl v lx = 30 v, v fb =0.5v - - 1 a en i nput l eakage c urrent i en - lkg 1 v en = v cc - 1.5 3 a i en - lkg 2 v en = g nd - - 1 a shutdown delay t shdn - 10 - ms thermal shutdown t sd - 1 6 0 - c thermal shutdown hysteresis t sh - 30 - n ote1: guaranteed by design. v?mw`r?y?b? www.gofotech.com
5/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? a pplication c ircuit (1) 10 series led application (2) led dimming application v?mw`r?y?b? www.gofotech.com
6/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? a pplication i nform ation setting the i led current application circuit item shows the basic application circuit with AX2016/a adjustable output version. the external resistor sets the led output current according to the following equation: i led = ( v fb / r 3 ) part no. i led r 3 AX2016 20ma 15 6 mw 350ma 0.857 105 mw AX2016a 20ma 10 4 mw 350ma 0.571 70 mw over voltage protection the over voltage protection is detected by a junction breakdown detecting circuit. once v out goes over the detecting voltage, sw pin stops switching and the pow er n - mosfet will be turned off. then, the v out will be clamped to be near v ovp . under voltage lockout (uvlo) to avoid mis-operation of the device at low input voltages an under voltage lockout is included that disables the device, if the input voltage falls below ( 2.25 v-100mv). input capacitor selection the input capacitor reduces the surge current drawn from the input and switching noise from the device. the input capacitor impedance at the switching frequency shall be less than input source impedance to prevent high frequency switching current passing to the input. a low esr input capacitor sized for maximum rms current must be used. ceramic capacitors with x5r or x7r dielectrics are highly recommended because of their low esr and small tempe rature coe fficients. a 4.7 f ceramic capacitor for most applications is sufficient. for a lower output power requirement application, this value can be decreased. output capacitor selection the output capacitor is required to keep the output voltage ripple small a nd to ensure regulation loop stability. the output capacitor must have low impedance at the switching frequency. ceramic capacitors with x5r or x7r dielectrics are recommended due to their low esr and high ripple current. a 1uf ceramic capacitors works for most of the applications. higher capacitor values can be used to improve the load transient response. v?mw`r?y?b? www.gofotech.com
7/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? t ypical characteristics efficiency vs. output current efficiency vs. input voltage output voltage vs. output current quiescent current v s. input voltage frequency vs. input voltage frequency vs. temperature v?mw`r?y?b? www.gofotech.com
8/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? t ypical characteristics (continuous) reference voltage vs. input voltage reference voltage vs. temperature led current vs. duty enable threshold vs. input v oltage v?mw`r?y?b? www.gofotech.com
9/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? typical characteristics (continuous) power on from v in power on from en steady state operation normal operation into ovp pwm dimming from en (200hz) pwm dimming from en (20khz) v in v sw v out i out en v sw v out i out v in =5v 4wleds i out =150ma v in =5v , 4wleds , i out =150ma v sw v fb v out i out v in v sw v out i sw ( v out , i out : measured by ac coupled mode ) v in =5v , 3 wleds , i out =150ma v in =5v , 4wleds , i out =150ma v e n v sw v out i out v e n v sw v out i out v in =5v , 4 wleds , i out =150ma v in =5v , 4 wleds , i out =150ma v?mw`r?y?b? www.gofotech.com
10/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a ? p ackage o utlines (1) tsot - 23- 6 l symbol dimensions in millimeters dimensions in inches min. nom. max. min. nom. max. a - - 1.10 - - 0.043 a1 0.00 - 0.10 0 - 0.004 a2 0.70 0.90 1.00 0.028 0.035 0.039 b 0.30 0.40 0.50 0.012 0.016 0.020 c 0.08 0.14 0.20 0.003 0.006 0.008 d 2.80 2.90 3.00 0.110 0.114 0.118 e 2.60 2.80 3.00 0.102 0.110 0.118 e1 1.50 1.60 1.70 0.059 0.063 0.067 e 0.95 bsc. 0.037 bsc. e1 1.90 bsc. 0.075 bsc. l 0.30 0.45 0.60 0.012 0.018 0.024 l1 0.60 ref. 0.024 ref. l2 0.25 bsc. 0.010 bsc. y - - 0.10 - - 0.004 r 0.10 - - 0.004 - - 0 o - 8 o 0 o - 8 o jedec outline: mo-193 aa e 1 e e e 1 b d a a 1 a 2 y l 1 r l c l 2 v?mw`r?y?b? www.gofotech.com
11/ 11 axelite confidential materials, do not copy or distribute without written consent. rev. 1. 0 nov. 26 , 20 12 AX2016/a (2) tdfn - 8l (2*2 0.75mm) symbol dimensions in millimeters dimensions in inches min. nom. max. min. nom. max. a 0.70 0.75 0.80 0.028 0.03 0.031 a1 0.00 0.02 0.05 0 .00 0.001 0.002 b 0.15 0.20 0.25 0.006 0.008 0.01 c 0.19 0.20 0.25 0.007 0.008 0.01 d 1.90 2.00 2.10 0.075 0.079 0.082 d2 1.00 1.60 1.65 0.061 0.063 0.065 e 1.90 2.00 2.10 0.0 75 0.079 0.082 e2 0.40 0.90 0.95 0.033 0.035 0.037 e - 0.50 - - 0.02 - l 0.20 0.35 0.45 0.012 0.014 0.016 y 0.00 - 0.08 0 .00 - 0.003 1 d 2 1 e 2 l b e 1 e 1 d p i n 1 i n d e n t c a 1 y v?mw`r?y?b? www.gofotech.com

▲Up To Search▲

Price & Availability of AX2016

	To Download AX2016 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .