UP6018QQMI

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Technical content

Features

The uP6008 is a compact high-efficiency step-up converter with integrated switch specifically designed to drive up to seven 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 uP6008 is suitable for portable devices which PCB area is especially concerned. The uP6008 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 uP6008 is available in SOT23 - 6L package. L 22uH COUT 1uF CIN 2.2uF R FB LX GND EN VOUT FB VIN Chip Enable VIN

7 WLEDs

Pin Configuration & Typical Application Circuit Note: (1) Please check the sample/production availability with uPI representatives. (2) uPI products are compatible with the current IPC/JEDEC J-STD-020 requirements. They are halogen-free, RoHS compliant and 100% matte tin (Sn) plating that are suit- able for use in SnPb or Pb-free soldering processes. SOT23-6L GND EN VIN FB LX VOU T uPI Confidential

2 uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual . o N n iPe m a N n iPn 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 TIN C d n aT U O ht 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 si 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 Sni p s i h T . 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 ) . n o i t c e s d e t a l e r 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 5T U O V . e g a t l o V t u p t u O tu 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 si 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 ci 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 ControlVREF Bandgap and Bias EN GND VOUTVIN LX Error Amp. PWM Comp. FB uPI Confidential

3uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual Functional Description The uP6008 is a compact high-efficiency step-up converter with integrated switch specifically designed to drive up to 7 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 uP6008 is suitable for portable devices where PCB area is especially concerned. Power on Reset The uP6008 continuously monitor supply input voltage at VIN pin for power on reset (POR). Once the rising POR threshold is exceeded, the uP6008 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 typically. When the EN pin pulls low, the uP6008 does not shuts down immediately but reduces the LED current gradually. Soft Start The uP6008 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 uP6008 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 ): VFB = RFB x ILED . 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 uP6008 modulates on-time of NMOSFET by changing the current command to regulate the LED current. Dimming Control The uP6008 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 uP6008 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 uP6008 features cycle-by-cycle current to prevent the device from damage due over current that might be result from of abnormal operation. The uP6008 turns off the NMOSFET when its current exceeds the current limit of 2A minimum, 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 uP6008 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 uP6008. The junction over-temperature threshold is 160 O C with 30O C of temperature hysteresis. The output voltage resumes when the over temperature fault condition is removed. uPI Confidential

4 uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual 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. θ JA is measured in the natural convection at TA = 25O 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. (Note 1) O C to +150O C ESD Rating (Note 2) (Note 4) Absolute Maximum Rating Thermal Information Recommended Operation Conditions Package Thermal Resistance (Note 3) Power Dissipation, PD @ TA = 25O C uPI Confidential

5uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual

Electrical Characteristics

(VIN = 3.7V, CIN = 2.2uF, COUT = 1uF, IOUT = 20mA, L = 22uH, TA =25O C, unless otherwise specified) r e t e m a r aPl o b m ySs n o i t i d n o C t s eTn iMp yTx a M st 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 uSV N I 5 .2- -0 .6V d l o h s e r h T t e s e R n O r e w oPV N I V N I g n i s iR0 .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 uQI Q V N E V , V 5 =B F I , V 5 . 1 =T U O , A m 0 = ) g n i h c t i w S o N (--0 020 03A u t n e r r u C y l p p uSI N I g n i h c t i w S , V 0 = BF- -1 2A m t n e r r u C n w o d t u hSI N D H SV N E V 0=- -1 4 A u e c n e r e f e R e g a t l o V e c n e r e f eRV B F P 8 0 0 6 Pu6 9 1 .02 .04 0 2 . 0 V Q 8 0 0 6 Pu4 9 2 .03 .06 0 3 . 0 n o i t a l u g e R e n iLV 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 WP- -5- -% y t u D g n i m m i D m u m i n i M 5- -0 01% 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 wSf C S O 5 7 .01 5 2 .1z H M e l c y C y t u D m u m i x a M 092 9- -% d n a h c t i w S r e w oPe d o i D R ) N O ( S Dh c t i wSR ) N O ( S DIX L A m 0 0 1=- -2 .0- - Ω 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 NEV L I V N I n w o d t u h S , V 6 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 NEV H I V N I e l b a n E , V 6 o t V 8 . 2=4 .1- -- -V t n e r r u C k n i S NEI H I --1 - -A 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 02z 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 O527 29 2V l e v e L t i m i L t n e r r uCI X L 2- -- -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 hTT N D H S n g i s e d yB- -0 61- - 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 yB- -0 3- - O C uPI Confidential

6 uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual VOUT (50mV/Div) IOUT (10mA/Div) VOUT (50mV/Div) IOUT (10mA/Div) ILX (100mA/Div) VEN (2V/Div) VOUT (10V/Div) ILX (100mA/Div) VEN (2V/Div) VOUT (10V/Div) VEN (2V/Div) IOUT (10mA/Div) VEN (2V/Div) IOUT (10mA/Div) Typical Operation Characteristics Ripple 500ns/Div VIN = 3.7V, IOUT = 20mA, COUT = 0.22uF Ripple 500ns/Div VIN = 3.7V, IOUT = 20mA, COUT = 1uF PWM Dimming from EN 10us/Div VIN = 3.7V, IOUT = 20mA, FDIM = 20kHz PWM Dimming from EN 1ms/Div VIN = 3.7V, IOUT = 20mA, FDIM = 200Hz Power Off from EN 100ms/Div VIN = 3.7V, IOUT = 20mA Power On from EN 2ms/Div VIN = 3.7V, IOUT = 20mA uPI Confidential

7uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual 0.5 1.5 2.5 3.5 2.5 3 3.5 4 4.5 5 5.5 6 180 190 200 210 220 230 240 2 . 533 . 544 . 555 . 56 700 800 900 1000 1100 1200 1300 1400 -40 -20 0 20 40 60 80 100 120 140 190 195 200 205 210 -40 -20 0 20 40 60 80 100 120 140 0 1 02 03 04 05 06 07 08 09 0 1 0 0 100kHz 200kHz 20kHz 10kHz 1kHz 100Hz 40% 45% 50% 55% 60% 65% 70% 75% 80% 85% 90% Load = 10mA Load = 20mA Switching Frequency vs. Temperature Temperature (O C) VIN = 3.7V, No load Switching Frequency (kHz) Typical Operation Characteristics Quiescent Current (uA) Input Voltage (V) VEN = 3.7V, VFB = 1.5V, No switching Quiescent Current vs. Input Voltage Supply Current vs. Input Voltage Supply Current (mA) Input Voltage (V) VEN = 3.7V, VFB = 0V, Switching Reference Voltage vs. Temperature Temperature (O C) VIN = 3.7V, No load Reference Voltage (mV) LED Current vs. Duty Duty (%) VIN = 3.7V, 7WLED, IOUT = 20mA LED Current (mA) Efficiency vs. Input Voltage Input Vltage (V) 7WLED, L = 22uH Efficiency (%) uPI Confidential

9uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual

Package Information

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. SOT23 - 6L 0.30 - 0.50 2.80 - 3.00 2.60 - 3.00

1.90 BSC

0.00 - 0.15

0.95 BSC

1.50 - 1.70 0.08 - 0.22 0.30 - 0.60

1.45 MAX

10 uP6008-DS-C3001, Dec. 2014 www.upi-semi.com Conceptual 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 responsibility 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) 2013, UPI SEMICONDUCTOR CORP . uPI Semiconductor Corp. Headquarter 9F.,No.5, Taiyuan 1st St. Zhubei City, Hsinchu Taiwan, R.O.C. uPI Semiconductor Corp. Sales Branch Office 12F-5, No. 408, Ruiguang Rd. Neihu District, Taipei Taiwan, R.O.C. uPI Confidential