S8200 KODENSHI | Alldatasheet

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◈ Description The S8200 is an integrated adjustable constant-current source, driving loads up to 150mA, The output current level can be adjusted via an external resistor. The integrated SHDN input of the S8200 permits LED brightness regulation by pulse width modulation (PWM), with the SHDN input, the LED brightness can be regulated via duty cycle. Also, SHDN low sets the S8200 in sleep mode, the SHDN pin also can be used as an enable input. This discrete integration technology eliminates individual components by combining them into a single package, which results in a significant reduction of both system cost and board space. The device is a small surface mount package (SOT-25) ◈ Features

  • Supplies stable bias current for LEDs
  • LED drive current adjustable via single external resistor (Max 150mA)
  • Low Cost, Low External Parts Count
  • Small Surface-Mount SOT-25 Package
  • Halogen-Free Package is Available Package Type Device Name Marking SOT-25 S8200 82□※ ۀڿ Pin Symbol Description 1 FB Feedback / 0.6V Reference

2 GND Ground

3 SHDN Disable On/Off

4 VCC Power Supply

5 OUTPUT Open Collector Output

ڌ ڍ ڏڎ ڐ ◈ Pin Assignment & Description Package : SOT-25 ◈ Ordering Information SHDN GND FB VCC OUTPUT

◈ A b s o l u t e m a x i m u m r a t i n g s [Ta=25℃] Characteristic Symbol Rating Unit Power Supply V oltage V CC(MAX) 25 V Output V oltage V OUT(MAX) 25 V Output Sink Current I OUT(MAX) 150 mA Thermal Resistance Junction-Ambient Rth(j-a)* 250 ℃/W Power Dissipation P D * 0.5 W Operating Temperature Range T opr -40 ~ +85 ℃ Storage Temperature Range T stg -55 ~ +125 ℃ * Mounted on a glass epoxy circuit board of 30x30mm Pad dimension of 50mm2 ◈ Recommended operating conditions Characteristic Symbol Rating Unit Min Max Power Supply V oltage V CC 3 24 V Output V oltage V OUT 1.5 Vcc V Output Sink Current I OUT - 100 mA Shut Down V oltage SHDN -0.3 Vcc V Dimming Frequency (SHDN) F DIM - 10 kHz ◈ Electrical Characteristics (Ta=25 , unless otherwise noted.)℃ Characteristic Symbol Condi tion Min. Typ. Max. Unit Supply Current 1 I Q1 V CC =5V , Iout=10mA, V out=open - 2.0 3.0 mA Supply Current 2 I Q2 V CC =22V , Iout=10mA, V out=open - 2.2 3.5 mA V o Leak Current Ileak Vcc=5V , V out=22V - 0.1 1 µA Feedback V oltage V FB V CC =5V , Iout=10mA 586 600 614 mV Dropout V oltage Vdrop V CC =5V , Iout=100mA - 0.8 1.5 V Line Regulation △V FB1 V CC =3V~22V , Iout=10mA - 3 10 mV Load Regulation △V FB2 V CC =5V, Iout=1mA~100mA - 2 10 mV SHDN V oltage On Vdis on V CC =5V , Iout=10mA, Vo u t = V c c 1.5 - - V SHDN V oltage Off Vdis off V CC =5V , Iout=10mA, Vo u t = V c c - - 0.5 V SHDN Pin Current Idis Vcc=5V , SHDN=5V 230 430 630 µA Short Circuit Current I SC R FB =0Ω - 250 - mA S8200

◈ Functional block diagram ◈ Design Consideration 1) Calculation for RFB - RFB = 0.6V / ILED 2) Calculation for Vdrop - Vdrop = VCC – VLED 3) Calculation for Power Dissipation on the S8200 -PD1 = (Vdrop – VFB ) x ILED -PD2 = VCC x IQ -PD(total) = PD1 + PD2 4) If does not use an Dimming function, connect SHDN Pin with the ground. OCP GND FB Out VCC SHDN 0.6V

<APP1. Constant Current LED Driver Circuit> <APP2. PWM Dimming LED Driver Circuit> ◈ Typical Applications <APP3. VAC Landscape Lighting Application Circuit> 5 4 1 2 3 OUTPUT VCC FB GND SHDN R FB PWM signal Vs S8200 5 4 1 2 3 OUTPUT VCC FB GND SHDN R FB VS S8200 ILED =0.6V / RFB 5 4 1 2 3 OUTPUT VCC FB GND SHDN R FB AC INPUT (12V / 60Hz) 220μF S8200 SDB1040

<APP4. High V oltage Operation of S8200 (1) > For operation in excess of S8200 specified maximum voltage (VCC & VOUT ) of 25V, one way is to connect a sufficient number of LEDs between the power supply voltage and the DC input of the VCC &V OUT (pin 4, 5) such that the voltage seen at pin 4, 5 is less than 25V. That is to say, use additional LEDs to drop the voltage fed to the S8200 below its maximum rating, in the usual way. Refer to APP4,5 Note that the exact number of diodes required will depend on the supply voltage VCC and output voltage VOUT ,the voltage drops across the particular LEDs being used. (Red, Blue and White LEDs have different forward voltage drop.) Use enought LEDs such that voltage at pin4,5 of S8200 is < 25V ※ Attention : When VS uses to exceed 25V, Dimming functions the use is impossible. <APP5. High V oltage Operation of S8200 (2) > ◈ Typical Applications 5 4 1 2 3 OUTPUT VCC FB GND SHDN R FB VS > 25V S8200 D 1 D 2 D N 5 4 1 2 3 OUTPUT VCC FB GND SHDN R FB VS > 25V S8200 D 1 D 2 D N-1 D N

◈ Typical Applications <APP6. Power Supply Where Separates Operation of S8200 > 5 4 1 2 3 OUTPUT VCC FB GND SHDN R FB VS > 25V S8200 D 1 D 2 D N Ra Rb

͢͡͡ ͢͢͡ ͣ͢͡ RFͳ=ͧΩ ΅Ͳ=ͣͦ℃ ͩ͡͡ ͩͣ͡ ͩͥ͡ ͩͧ͡ ͩͩ͡ ͪ͡͡ ͪͣ͡ ͪͥ͡ ͪͧ͡ ͪͩ͡ ͢͡͡͡ ·ʹʹ=ͦ· RFͳ=ͧΩ ͟͡͡ ͦ͟͡ ͢͟͡ ͦ͢͟ ͣ͟͡ ͣͦ͟ ͤ͟͡ ͤͦ͟ ͥ͟͡ ͥͦ͟ ͦ͟͡ ·cc=ͤ· ·cc=ͦ· ·cc=ͣͣ· RFͳ=ͧ͡Ω ·OΆ΅=OΡeΟ ͟͡͡ ͦ͟͡ ͢͟͡ ͦ͢͟ ͣ͟͡ ͣͦ͟ ͤ͟͡ ͤͦ͟ ͥ͟͡ ·ʹʹ=ͦ· △IΠΦΥ=͢͡͡ΞͲ ͟͡͡ ͟͢͡ ͣ͟͡ ͤ͟͡ ͥ͟͡ ͦ͟͡ ͧ͟͡ ͨ͟͡ ͩ͟͡ ͪ͟͡ ͢͟͡ RFͳ=ͧ͡Ω ͣͦ͟͞ ͣ͟͞͡ ͦ͢͟͞ ͢͟͞͡ ͦ͟͞͡ ͟͡͡ ͦ͟͡ ͢͟͡ ͦ͢͟ ͣ͟͡ ͣͦ͟ ·ʹʹ = ͦ· RFͳ = ͧ͡Ω ◈ Electrical Characteristic Curves Fig.1 VFB vs TA Feedbak V oltage Change - VFB [%] Ambient Temperature - TA [℃] Fig.2 Line Regulation vs TA Line Regulation- △V FB [mV] Ambient Temperature - TA [℃] Fig.3 Load Regulation vs TA Load Regulation- △V FB [mV] Ambient Temperature - TA [℃] Fig.4 Quiescent Current vs TA Quiescent Current - Iڬ [mA] Ambient Temperature - TA [℃] Fig.5 Dropout Voltage vs TA Dropout V oltage- VDROP [mV] Ambient Temperature - TA [℃] Fig.6 Output Current vs Supply Voltage Output Current [mA] Supply V oltage - Vcc [V]

◈ Electrical Characteristic Curves Fig.7 Dimming Waveform Ch1 : VFB , 1V/Div Ch2 : SHDN, 5V/Div Ch3 : IOUT , 5mA/Div Ch1 ► Ch2 ► Ch3 ► Fig.8 Short Circuit Current Ch1 : SHDN, 5V/Div Ch2 : IOUT , 50mA/Div Ch1 ► Ch2 ► Fig.9 Power Dissipation vs TA Power Dissipation - ګڟ [mW] Ambient Temperature - TA [℃]

SOT-25 Outline Dimension(mm) ※ Recom m end PCB solder land [ Unit: m m ]

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