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UP6003 1 UP6003-ds-f0000, feb. 2013 www.upi-semi.com ? ? ? ? ? drive up to ten white leds from 3v supply ? ? ? ? ? wide vin range from 2.5v to 5.5v ? ? ? ? ? internal soft-start ? ? ? ? ? one pin shutdown and dimming control ? ? ? ? ? wide range for pwm dimming (100hz to200khz) ? ? ? ? ? under voltage protection ? ? ? ? ? over-temperature and over-voltage protection ? ? ? ? ? integrated 1.2a, 0.7 switch ? ? ? ? ? internal compensation ? ? ? ? ? small tsot23-6l package ? ? ? ? ? rohs compliant and halogen free r e b m u n r e d r oe p y t e g a k c a pg n i k r a m p o t 6 t m a 3 0 0 6 p ul 6 - 3 2 t o s t4 5 n tiny package, high performance, constant current switching regulator for 10x white led ? ? ? ? ? white led supply for backlight displays ? ? ? ? ? cellular phones ? ? ? ? ? pdss, handheld computers ? ? ? ? ? digital cameras ? ? ? ? ? mp3 players ? ? ? ? ? gps receivers ? ? ? ? ? camcorders general description applications ordering information features note: upi products are compatible with the current ipc/ jedec j-std-020 requirement. they are halogen-free, rohs compliant and 100% matte tin (sn) plating that are suitable for use in snpb or pb-free soldering processes. the UP6003 is a compact high-efficiency step-up converter with integrated switch specifically designed to drive up to ten white leds in series. series connection of the leds provides identical current resulting in uniform brightness. fixed 1.0 mhz operation allows smallest output ripple and external component size. with high conversion efficiency and small package, the UP6003 is suitable for portable devices which pcb area is especially concerned. the UP6003 features over-voltage protection against open- led situation. a single pin provides shutdown and accurate led dimming control. other features includes internal soft start, internal compensation, over-current protection, and over temperature protection. the UP6003 is available in tsot23-6l package. tsot23-6l gnd en vin fb lx vou t 1 2 4 6 3 5 pin configuration & typical application circuit l 22uh c out 1uf c in 2.2uf r fb lx gnd en vout fb vin chip enable vin 10 wleds
UP6003 2 UP6003-ds-f0000, feb. 2013 www.upi-semi.com . o n n i pe m a n n i pn o i t c n u f n i p 1x l . t u p t u o h c t i w s l a n r e t n i e h t o t n i p s i h t t c e n n o c . t e f s o m n l a n r e t n i f o n i a r d e h t s i n i p e h t . e d o i d y k t t o h c s l a n r e t x e f o e d o n a d n a r o t c u d n i t s o o b 2d n g . d n u o r g c f o l a n i m r e t e d o h t a c e h t o t y l t c e r i d n i p e h t s e i t in c d n a t u o h t i w e n a l p d n u o r g d n a . n i p s i h t o t t c e n n o c d l u o h s s t n e n o p m o c k c a b d e e f d n a l a n g i s - l l a m s l l a . e c n a d e p m i t s e w o l e h t 3b f . k c a b d e e f t n e r r u c s i t n e r r u c d e l e h t . r e i f i l p m a r o r r e f o t u p n i - g n i t r e v n i e h t s i n i p s i h t . e g a t l o v e c n e r e f e r l a n r e t n i o t d e t a l u g e r d n a r o t s i s e r s e i r e s a h g u o r h t d e s n e s 4n e . l o r t n o c g n i m m i d d n a n w o d t u h s s e c u d e r d n a r e t r e v n o c e h t n w o d s t u h s w o l n i p s i h t g n i l l u p e h t e e s ( l o r t n o c g n i m m i d d e l r o f s e s u l p s e v i e c e r n i p s i h t . a u 1 . 0 o t n w o d t n e r r u c y l p p u s s t i ) . n o i t c e s d e t a l e r 5t u o v . e g a t l o v t u p t u o t u p t u o r o f d e r o t i n o m s i n i p s i h t . e g a t l o v t u p t u o e h t o t y l t c e r i d n i p s i h t t c e n n o c s i r o t i c a p a c c i m a r e c r 7 x r o r 5 x f u 1 m u m i n i m a . d e l - n e p o t s n i a g a n o i t c e t o r p e g a t l o v r e v o . d e r i u q e r 6n i v . t u p n i y l p p u s r e w o p e h t s r e w o p d n a e g a t l o v t u p t u o e h t o t t n e r r u c s e i l p p u s t a h t e g a t l o v t u p n i c i m a r e c r 7 x r o r 5 x f u 2 . 2 m u m i n i m a h t i w e g a t l o v t u p n i s s a p y b . t i u c r i c l o r t n o c l a n r e t n i . r o t i c a p a c functional pin description functional block diagram control logic driver current sense current limit detector overvoltage protection slope comp shutdown & dimming control v ref bandgap and bias en gnd vout vin lx error amp. pwm comp. fb
UP6003 3 UP6003-ds-f0000, feb. 2013 www.upi-semi.com functional description the UP6003 is a compact high-efficiency step-up converter with integrated switch specifically designed to drive up to 10 wleds in series. series connection of the leds provides identical led current resulting in uniform brightness. fixed 1.0mhz operation allows smallest output ripple and external component size. with high conversion efficiency and small package, the UP6003 is suitable for portable devices where pcb area is especially concerned. power on reset the UP6003 continuously monitor supply input voltage at vin pin for power on reset (por). once the rising por threshold is exceeded, the UP6003 sets itself to active state and is ready to accept chip enable command. the por threshold is typically 2.2v at v in rising with 0.1v hysteresis. enable/disable pulling the en pin higher than 1.4v enables the device and initiate its soft start cycle. pulling the en pin lower than 0.4v disables the device and reduces it shutdown current less than 1ua. when the en pin pulls low, the UP6003 does not shuts down immediately but reduces the led current gradually. soft start the UP6003 limits the in-rush current at start-up by increasing the current limit. this prevents unwanted shutdown otherwise may be triggered by voltage drop due to large inrush current. led current regulation the UP6003 operates in a constant-frequency, slope- compensated peak-current-mode control to regulate the led current. the led current is sensed at fb pin by a current sensing resistor (r fb ): v fb = r fb x i led . the error amplifier compares the feedback voltage with internal 0.3v reference and compensates the error signal to get current command level. the internal nmosfet turns on at the beginning of each switching cycle and lets the inductor current ramp up linearly. the nmosfet turns off when the inductor current reaches the current command level. the UP6003 modulates on-time of nmosfet by changing the current command to regulate the led current. dimming control the UP6003 receives a pwm signal at en pin for led brightness control. the pwm signal is flatted by internal low pass filter to get a reference voltage that is proportional to the duty cycle of the pwm signal. the UP6003 does not turn off as the en pin is pulled high or low as shown in the typical operation characteristics section. this eliminates inrush current and audio noise that may occurs in convention pwm dimming control. the pwm frequency range from 100hz to 200khz is acceptable and yield linear brightness control. current limit function the UP6003 features cycle-by-cycle current to prevent the device from damage due over current that might be result from of abnormal operation. the UP6003 turns off the nmosfet when its current exceeds the current limit of 1.2a typical, preventing the indcutor current from continuously ramping up. the nmosft is turned on at next switching cycle. this minimizes the power dissipation and components stresses under over load and short-circuits conditions. over voltage protection the over voltage protection prevents damage to UP6003 during high output voltage conditions. when the output voltage is higher than threshold limit, the converter stops switching and the output voltage decays. switching would be turned on again when the voltage of the ovp pin drops below the below the lower hysteresis limit. over temperature protection the excessive internal dissipation of thermal protection will malfunction UP6003. the junction over-temperature threshold is 160 o c with 30 o c of temperature hysteresis. the output voltage resumes when the over temperature fault condition is removed.
UP6003 4 UP6003-ds-f0000, feb. 2013 www.upi-semi.com r e t e m a r a pl o b m y ss n o i t i d n o c t s e tn i mp y tx a m s t i n u t n e r r u c y l p p u s e g n a r e g a t l o v y l p p u sv n i 5 . 2- -5 . 5v d l o h s e r h t t e s e r n o r e w o pv n i v n i g n i s i r0 . 22 . 25 4 . 2v s i s e r e t s y h t e s e r n o r e w o p v n i - -1 . 0- -v t n e r r u c t n e c s e i u qi q v n e v , v 5 = b f i , v 5 . 1 = t u o o n ( , a m 0 = ) g n i h c t i w s - -0 0 20 0 3a u t n e r r u c y l p p u si n i g n i h c t i w s , v 0 = b f- -12a m t n e r r u c n w o d t u h si n d h s v n e v 0 =- -14a u e c n e r e f e r e g a t l o v e c n e r e f e rv b f 5 8 2 . 03 . 05 1 3 . 0v n o i t a l u g e r e n i lv n i v 3 . 4 ~ v 0 . 3 =- -1- -% y c a r u c c a l o r t n o c g n i m m i dz h k 0 2 t a % 0 2 > e l c y c y t u d m w p- -5- -% y t u d g n i m m i d m u m i n i m 5- -0 0 1% (note 1) supply input voltage, v in ---------------------------------------------------------------------------------------------------------------- -0.3v to +6 v lx, vout pin voltage --------------------------------------------------------------------------------------------------------- ---------- -0.3v to +50v other pins ------------------------------------------------------------------------------------------------------------------- -------------- -0.3v to +6v storage temperature range ---------------------------------------------------------------------------------------------------- ------- -65 o c to +150 o c junction temperature --------------------------------------------------------------------------------------------------------- --------------------------- 150 o c lead temperature (soldering, 10 sec) ----------------------------------------------------------------------------------------- ------------------- 260 o c esd rating (note 2) hbm (human body mode) -------------------------------------------------------------------------------------------------------- ------------- 2kv mm (machine mode) ------------------------------------------------------------------------------------------------------------ ----------------- 200v (note 4) operating junction temperature range ----------------------------------------------------------------------------------------- -- -40 o c to +125 o c operating ambient temperature range ------------------------------------------------------------------------------------------ - -40 o c to +85 o c supply input voltage, v in --------------------------------------------------------------------------------------------------------------- +2.8v to +5. 5v (v in = 3.7v, c in = 2.2uf, c out = 1uf, i out = 20ma, l = 22uh, t a =25 o c, unless otherwise specified) absolute maximum rating thermal information recommended operation conditions electrical characteristics package thermal resistance (note 3) tsot23 -6l ja --------------------------------------------------------------------------------------------------------------------------- 25 0 o c/w tsot23 -6l jc -------------------------------------------------------------------------------------------------------------------------- 100 o c/w power dissipation, p d @ t a = 25 o c tsot23 -6l -------------------------------------------------------------------------------------------------------------------- ----------------------- 0.4w
UP6003 5 UP6003-ds-f0000, feb. 2013 www.upi-semi.com note 1. stresses listed as the above absolute maximum ratings may cause permanent damage to the device. these are for stress ratings. functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. note 2. devices are esd sensitive. handling precaution recommended. note 3. ja is measured in the natural convection at t a = 25 c on a low effective thermal conductivity test board of jedec 51-3 thermal measurement standard. note 4. the device is not guaranteed to function outside its operating conditions. r e t e m a r a pl o b m y ss n o i t i d n o c t s e tn i mp y tx a m s t i n u r o t a l l i c s o e g n a r y c n e u q e r f g n i h c t i w sf c s o 8 . 012 . 1z h m e l c y c y t u d m u m i x a mv b f v 5 2 . 0 =0 92 9- -% d n a h c t i w s r e w o pe d o i d r ) n o ( s d h c t i w sr ) n o ( s d i x l a m 0 0 1 =- -7 . 02 . 1 t u p n i c i g o l d l o h s e r h t w o l c i g o l n ev l i v n i n w o d t u h s , v 5 . 5 o t v 8 . 2 =- -- -4 . 0v d l o h s e r h t h g i h c i g o l n ev h i v n i e l b a n e , v 5 . 5 o t v 8 . 2 =4 . 1- -- -v t n e r r u c k n i s n ei h i - -- -1a u g n i m m i d r o f y c n e u q e r f m w p 1 . 0- -0 0 2z h k y a l e d n o w d t u h s - -0 2- -s m n o i t c e t o r p l e v e l n o i t c e t o r p e g a t l o v r e v o 2 46 40 5v l e v e l t i m i l t n e r r u ci x l 12 . 1- -a e r u t a r e p m e t n o w d t u h s l a m r e h tt n d h s n g i s e d y b- -0 6 1- - o c s i s e r e t s y h n w o d t u h s l a m r e h t t n d h s n g i s e d y b- -0 3- - o c electrical characteristics
UP6003 6 UP6003-ds-f0000, feb. 2013 www.upi-semi.com ven 2v/div iled 10mv/div ven 2v/div iled 10mv/div vout 50mv/div iled 10mv/div vout 50mv/div iled 10mv/div ven 2v/div vout 10v/div ilx 100mv/div ven 2v/div vout 10v/div ilx 100mv/div typical operation characteristics power on from en 2ms/div 10wled, i led = 20ma, v in = 3.7v power off from en 10ms/div 10wled, i led = 20ma, v in = 3.7v ripple 500ns/div v in = 3.7v, i led = 20ma, c out = 1uf ripple 500ns/div v in = 3.7v, i led = 20ma, c out = 0.22uf pwm dimming from en 1ms/div v in = 3.7v, i led = 20ma, f dim = 200hz pwm dimming from en 10us/div v in = 3.7v, i led = 20ma, f dim = 20khz
UP6003 7 UP6003-ds-f0000, feb. 2013 www.upi-semi.com 0.270 0.276 0.282 0.288 0.294 0.300 0.306 0.312 0.318 0.324 0.330 -40 -20 0 20 40 60 80 100 120 0.270 0.276 0.282 0.288 0.294 0.300 0.306 0.312 0.318 0.324 0.330 2.5 3.0 3.5 4.0 4.5 5.0 5.5 940 960 980 1000 1020 1040 1060 1080 1100 -40 -20 0 20 40 60 80 100 120 900 920 940 960 980 1000 1020 1040 1060 1080 1100 2.5 3.0 3.5 4.0 4.5 5.0 5.5 50 55 60 65 70 75 80 85 90 2.5 3.0 3.5 4.0 4.5 5.0 5.5 load = 10ma load = 20ma load = 30ma 50 55 60 65 70 75 80 85 90 2.5 3.0 3.5 4.0 4.5 5.0 5.5 load = 20ma load = 10ma load = 30ma v ref vs. input voltage input voltage (v) no load v ref (v) v ref vs. input temperature temperature ( o c) v in = 3.7v, no load v ref (v) typical operation characteristics switching frequency vs. temperature temperature ( o c) vin = 3.7v, no load switching frequency (khz) efficiency vs. input voltage input voltage (v) 10wled, l = 22uh efficiency (%) switching frequency vs. input voltage input voltage (v) no load switching frequency (khz) efficiency vs. input voltage input voltage (v) 10wled, l = 10uh efficiency (%)
UP6003 8 UP6003-ds-f0000, feb. 2013 www.upi-semi.com 0 5 10 15 20 25 0 102030405060708090100 2khz 20khz 200hz 200khz 80 100 120 140 160 180 200 220 240 2.53.03.54.04.55.05.5 44.0 44.4 44.8 45.2 45.6 46.0 46.4 46.8 47.2 47.6 48.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 2.5 3.0 3.5 4.0 4.5 5.0 5.5 rising falling typical operation characteristics led current vs. duty duty (%) v in = 3.7v, 10wled, iled = 20ma led current (ma) quiescent current vs. input voltage input voltage (v) v en = v fb = 2v (no switching) quiescent current (ua) ovp voltage vs. input voltage input voltage (v) no load ovp voltage (v) enable threshold vs. input voltage input voltage (v) no load enable threshold voltage (v)
UP6003 9 UP6003-ds-f0000, feb. 2013 www.upi-semi.com application information component selection external component selection begins with inductor value selection based on the considerations of the output voltage, output current, and the maximum/minimum input voltages. catch diode and input/output capacitors can be selected according to the inductor value l. inductor selection inductor selection should consider the inductor value, rated current, dcr, size, core material, and cost. the inductor value is selected based on the consideration of inductor ripple current. the recommended value of inductor for 10 wleds applications is from 10uh to 22uh. the inductor should have low core loss at 1mhz and low dcr for better efficiency. the inductor saturation current rating should be considered to cover the inductor peak current. layout consideration for best performance of the UP6003, the following guidelines must be strictly followed. 1. input and output capacitors should be placed close to the ic and connected to ground plane to reduce noise coupling. 2. the gnd should be connected to a strong ground plane for heat sinking and noise protection. 3. keep the main current traces as short and wide as possible. 4. lx node of dc-dc converter is with high frequency voltage swing. it should be kept at a small area. 5. place the feedback components as close as possible to the ic and keep away from the noisy devices. via for gnd via for gnd c in r set inductor c out gnd en vin fb lx 1 2 4 6 3 vout 5 figure 1. tsot23 - 6l layout reference maximum output current vs. output voltage 0 50 100 150 200 250 300 350 400 450 500 550 600 10 15 20 25 30 35 40 v in = 3.7v v in = 4.2v v in = 3.3v v in = 5.5v v out (v) i out_max (ma) figure 2. maximum output current vs. output voltage d ) l f v 2 1 (i d) (1 i osc in lx out(max) ? ? = calculation conditions: l = 10uh, f osc = 1mhz, = 0.85, i lx = 1.2a multi-strings application l 22uh c out 1uf c in 2.2uf r fb lx gnd en vout fb vin chip enable vin n x m wleds figure 3. application for driving nxm wleds please considering the maximum output current vs. output voltage relationship when used for nxm wleds application.
UP6003 10 UP6003-ds-f0000, feb. 2013 www.upi-semi.com package information note 1.package outline unit description: bsc: basic. represents theoretical exact dimension or dimension target min: minimum dimension specified. max: maximum dimension specified. ref: reference. represents dimension for reference use only. this value is not a device specification. typ. typical. provided as a general value. this value is not a device specification. 2.dimensions in millimeters. 3.drawing not to scale. 4.these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.15mm. tsot23-6l 1.90 bsc 0.00 - 0.10 0.08 - 0.25 0.30 - 0.60 1.10 max 0.30 - 0.51 2.80 - 3.02 2.60 - 3.00 0.95 bsc 1.50 - 1.70
UP6003 11 UP6003-ds-f0000, feb. 2013 www.upi-semi.com important notice upi and its subsidiaries reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. upi products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment. however, no res ponsibility is assumed by upi or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of upi or its subsidiaries. copyright ( c ) 2011, upi semiconductor corp. upi semiconductor corp. headquarter 9f.,no.5, taiyuan 1st st. zhubei city, hsinchu taiwan, r.o.c. tel : 886.3.560.1666 fax : 886.3.560.1888 upi semiconductor corp. sales branch office 12f-5, no. 408, ruiguang rd. neihu district, taipei taiwan, r.o.c. tel : 886.2.8751.2062 fax : 886.2.8751.5064

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