SSMG501

SSMG501 Series Elektronische Bauelemente Low Power Constant Current LED Driver RoHS Compliant Product A suffix of “-C” specifies halogen or lead -free DESCRIPTION SSMG501 is a simple general purpose current regulation component that can be easily used in various LED lighting applications. With the excellent load/line regulation and minimized chip current skew, SSMG501 keep LED’s current very stable even when power or load fluctuate in a wide range and make intensity very uniform in large area of LED light source. Except power supply function, the VDD pin of SSMG501 is output enable (OE) also, and can be used in digital PWM controlled circuit to achieve more precise current adjusting in gray level applications. The minimized power supply voltage let SSMG501 be used as a current regulative diode (CRD) when VDD and VP pin are tight together. This application makes SSMG501 very easy to be used. Just like a diode, when this diode is inserted in LED series, the current in circuit is regulated. In high supply voltage and low LED load voltage application, two or more single channel SSMG501 can be connected in series to share redundant high voltage. the extra redundant voltage can be share by each SSMG501 by a reasonable mechanism. This special capability let SSMG501 very suit for the usage of wide range power supply that many liner type LED drivers cannot work. SOT-23 FEATURES 18mA~30mA constant current regulator Self power structure, no extra power supply is needed 0.4V~17V output voltage 2µS/2µS current rising/falling time Cascade-able for higher voltage application No external current setting resistor is needed 1.6V~12V supply voltage PWM dimming by VDD pin -40℃~120℃ junction operating temperature Less than 1%/V load(or line) regulation A L 3 3 Top View 1 2 CB 1 2 K E D F REF. A B C D E F G Millimeter Min. Max. 2.70 3.10 2.10 3.00 1.20 1.80 0.89 1.40 1.78 2.04 0.30 0.50 H REF. G H J K L J Millimeter Min. Max. 0.09 0.18 0.45 0.70 0.08 0.25 0.89 1.02 APPLICATIONS General LED Lighting LED back lighting LED torch/flashing RGB lighting MARKING CODE SSMG501-18: 1A18 SSMG501-20: 1A20 SSMG501-25: 1A25 SSMG501-30: 1A30 Note: 18, 20, 25, 30 = Output Current(mA) PACKAGE INFORMATION Weight: 0.07800g (Approximately) http://www.SeCoSGmbH.com/ Any changes of specification will not be informed individually. 11-Dec-2009 Rev. B Page 1 of 4 SSMG501 Series Elektronische Bauelemente Low Power Constant Current LED Driver BLOCK DIAGRAMS PER CHANNEL AND IDEAL IV CHARACTERISTICS TERMINAL DESCRIPTION Pin name VDD VP VN Function Power supply Current in Current out Pin # 2 1 3 ABSOLUTE MAXIMUM RATINGS (TA = 25°C) PARAMETER Supply Voltage Output Voltage Output Current Power Dissipation Thermal Resistance Operating Temperature Storage Temperature SYMBOL VDD VP IPN PD RθJA TOPR TSTG RATINGS 0 ~ 17 -0.2 ~ 20 IS** +10% 250 300 -40 ~ +85 -55 ~ +150 UNIT V V mA mW ℃/W ℃ ℃ ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage Supply Current Output Voltage Output Current Leakage Line Regulation Load Regulation Thermal Regulation Threshold Voltage Current Boost ** Is is output saturation current. SYMBOL VDD IDD VP IS ILeakage %/VDD %/VP %/10℃ Viboost Iboost CONDITION Room Temp. VDD=5V, IP≒ IS** VDD=3V, IP≒ IS** VDD=1.7V, IP≒IS** Spec 0.4V > VDD > 0V, VP=15V 12V > VDD > 1.6V 10V > VP > 1.6V VDD=VP=2V IP=IS*1.1 VP=Viboost MIN 1.6 100 0.4 0.45 1.2 15 1 11 7 TYP 150 12 10 MAX 12 250 17 17 17 30 5 ±1 ±1 ±0.5 13 13 UNIT V µA V V V mA µA %/V %/V %/10℃ V %* IS SWITCHING CHARACTERISTICS (TA = 25°C) PARAMETER Propagation Delay Time VDD “L” →”H” Output Current Rising Time Propagation Delay Time VDD “H” →”L” Output Current Falling Time SYMBOL tpLH tRise tpHL tFall CONDITION VP=1V, VDD=0V→3V VP=1V, VDD=0V→3V VP=1V, VDD=3V→0V VP=1V, VDD=3V→0V MIN - TYP 1 1.5 1 1.5 MAX 5 5 UNIT µS µS µS µS http://www.SeCoSGmbH.com/ Any changes of specification will not be informed individually. 11-Dec-2009 Rev. B Page 2 of 4 SSMG501 Series Elektronische Bauelemente Low Power Constant Current LED Driver TEST CIRCUIT TIMING WAVEFORM 1AXX CHARACTERISTIC CURVE Line Regulation Load Regulation 25 25 Output Current IPN (mA) Output Current IPN (mA) 20 20 15 15 VPN =2V Center Current =20mA 10 10 5 5 0 0 0 2 4 6 8 10 12 14 16 17 1 1.1 1.3 1.4 1.5 2 3 4 5 6 7 8 10 12 14 Supply Voltage VDD (V) Output Voltage VPN (V) IDD vs. VDD (Room Temp.) 180 160 140 120 200 250 IDD vs. Temperature IDD (µA) IDD (µA) 100 80 60 40 20 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 6 7 8 9 10 12 15 16 17 150 100 50 0 -40 0 30 50 70 90 110 120 130 Supply Voltage VDD (V) Temperature (℃) http://www.SeCoSGmbH.com/ Any changes of specification will not be informed individually. 11-Dec-2009 Rev. B Page 3 of 4 SSMG501 Series Elektronische Bauelemente Low Power Constant Current LED Driver APPLICATION CIRCUITS ● 5V PWM Lighting Application ● High Voltage Drop Application 1AXX 1AXX 1AXX ● 12V Lighting Application ● Parallel Application 1AXX 1AXX 1AXX ● 36V Lighting Application LED Vf = 3.3 V ~ 3.5 V VDD = 35.5 V ~ 40 V http://www.SeCoSGmbH.com/ Any changes of specification will not be informed individually. 11-Dec-2009 Rev. B Page 4 of 4