LC201S SANKEN | Alldatasheet
Document overview
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Technical content
Datasheet sections
- 8.1 Basic Operation ------------------------------------------------------------------
- 8.2 Startup Operation ---------------------------------------------------------------
- 8.3 Current Sink Function ---------------------------------------------------------
Features
Built-in startup circuit Power dissipation of the startup circuit is zero. (When the power of IC is supplied from external power supply) OUT1 pin voltage is selectable from 9 V or 20 V by SL pin voltage. (When the power of IC is supplied from internal startup circuit) OUT2 voltage is fixed to 5V Current Sink Function (In case OUT1 pin voltage decreases, OUT2 pin is fixed to Low state) Typical Application Circuit VAC BR1 1 2 3 4 ST NC SL NC GND OUT2SINK OUT1 8 7 5 LC201S NC Micro computer C3R1 Package SOP8 Not to scale
Applications
Various lighting fixtures Fluorescent lamp, ceiling light, street light and down light, etc. Electronic equipment with microcomputer http://www.sanken-ele.co.jp/en/
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 3 Mar. 30, 2016 1. Absolute Maximum Ratings The polarity value for current specifies a sink as "+," and a source as " −," referencing the IC. Unless otherwise specified T A = 25 °C Characteristic Symbol Test Conditions Pins Rating Units ST Pin Voltage VST 1－8 600 V OUT1 Pin Voltage VOUT1 1－5 35 V OUT2 Pin Voltage VOUT2 1－4 − 0.3 to 7.0 V SL Pin Voltage VSL 1－2 − 0.3 to 5.0 V SINK Pin Voltage VSINK 1－3 20 V SINK Pin Sink Current ISINK 1－3 1.2 mA OUT1 Pin Sink Current IOUT1 1－5 1.5 mA OUT2 Pin Sink Current (without auxiliary winding) IOUT2-N 1－4 1.5 mA OUT22 Pin Sink Current (with auxiliary winding) IOUT2-A 1－4 10 mA Operating Ambient Temperature Top ― − 55 to 125 °C Storage Temperature Tstg ― − 55 to 125 °C Junction Temperature Tj ― 150 °C 2. Electrical Characteristics The polarity value for current specifies a sink as "+," and a source as "−," referencing the IC. Unless otherwise specified, TA = 25 °C Characteristic Symbol Test Conditions Pins Rating Units 位 M i n . Typ. Max. Power Supply Startup Operation OUT2 Pin Output Voltage VOUT2 VST = 60 V 1 – 4 4.5 5.0 5.5 V SL Pin High Threshold Voltage VSL(H) 1－2 1.5 ― ― V SL Pin Low Threshold Voltage VSL(L) 1－2 ― ― 0.5 V Startup Current IST 1 – 5 1.5 ― 6.5 mA In case SL pin is Open Startup Circuit Operation Voltage VSTON(OP) 1 – 8 13 17 21 V OUT1 Pin Output Voltage VOUT1(OP) VST = 60 V 1 – 5 8.0 9.0 10.0 V UVLO Operation Stop Voltage VUVH(OP) 1 – 3 6.5 8.0 9.5 V UVLO Operation Start Voltage VUVL(OP) 1 – 3 6.0 7.5 9.0 V In case SL pin is GND Startup Circuit Operation Voltage VSTON(SH) 1 – 8 26 30 34 V OUT1 Pin Output Voltage VOUT1(SH) VST = 60 V 1 – 5 18 20 22 V UVLO Operation Stop Voltage VUVH(SH) 1 – 3 15 18 21 V UVLO Operation Start Voltage VUVL(SH) 1 – 3 13 16 19 V Thermal Characteristics Junction to Case Thermal Resistance * θj-C － － － 45 °C/W * Case temperature (TC) measured at the center of the case top surface
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 4 Mar. 30, 2016 3. Functional Block Diagram ST OUT1 OUT2 SINK GND SL 8 5 Startup Input UVLO Linear Regulator 4. Pin Configuration Definitions Pin Name Descriptions
1 GND Ground
2 SL Switch of OUT1 pin voltage
3 SINK Sink pin to flow sink current at low input voltage
condition. Connect to OUT2 pin. 4 OUT2 5 V (Typ.) output
5 OUT1
9 V (Typ.) or 20 V (Typ.) output. When auxiliary winding is connected to OUT1 pin, OUT1 pin is power supply of the control circuit. 6 (NC) No function. In order to maintain the distance between high voltage pin and low voltage pin, keep this pin open. 7 (NC) 8 ST Startup current input. When auxiliary winding is not connected to OUT1 pin, ST pin is power supply of the control circuit. GND SL SINK OUT2 OUT1 (NC) ST (NC)
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 6 Mar. 30, 2016 6. Package Outline SOP8 7. Marking Diagram Part Number L C 2 0 1 S S K Y M D Sanken Control Number Lot Number Y is the last digit of the year (0 to 9) M is the month (1 to 9, O, N or D) D is a period of days (1 to 3) : 1 : 1st to 10th 2 : 11th to 20th 3 : 21st to 31st NOTES: 1) Drawing is not to scale. 2) Pb-free. Device composition compliant with the RoHS directive
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 7 Mar. 30, 2016 8. Operational Description All of the parameter values used in these descriptions are typical values, unless they are specified as minimum or maximum. With regard to current direction, "+" indicates sink current (toward the IC) and " –" indicates source current (from the IC).
8.1 Basic Operation
During the startup process, power of IC is sp plied via ST pin. After startup, OUT1 pin can be used as power supply pin instead of ST pin. In this case the OUT1 pin is connected to the auxilia ry winding of external power supply. There are two output pins, OUT1 and OU T2. OUT1 pin voltage is selectable from 9V or 20V. OUT2 pin is fixed to 5V. In case the power supply after startup of IC is supplied from ST pin, the output voltage of OUT1 pin can be changed as shown in Table 8-1 by the connection method of SL pin as shown in Figure 8-1 (SL pin is open or short with GND pin). Table 8-1 Relationship between the state of SL pin and the output voltage of OUT1 pin Parameter SL = Open (VSL ≥ 1.5 V) SL = GND (VSL ≤ 0.5 V) OUT1 pin output voltage, VOUT1 9 V 20 V In case the power supply after startup of IC changes over to the supply from the external power supply , the OUT1 pin after startup of IC is applied to setup voltage of external power supply. Output voltage of OUT2 pin is 5V constant without relation of the state of SL pin and the supply way of power supply of IC. SL GND1 UVLO OUT2 OUT1 9V/20V Input ST VAC BR1 VSL Startup Linier Regulator Figure 8-1 SL pin peripheral circuit
8.2 Startup Operation
Figure 8-2 shows ST pin peripheral circuit. UVLO OUT2 OUT1 ST VAC BR1 Startup Linier Regulator IST Figure 8-2 ST pin peripheral circuit When ST pin voltage increase s to Startup Circuit Operation Voltage, V STON, the internal startup circuit starts operation, and the C2 connected to OUT1 pin is charged by Startup Current, IST (about 4 mA). After that, when OUT1 pin voltage increases to UVLO Operation Stop Voltage, V UVH, the OUT2 pin outputs the voltage of 5 V. When ST pin voltage decreases and OUT1 pin voltage decreases to UVLO Operation Start Voltage, V UVL, OUT2 pin voltage becomes about 0 V. The value of V STON, V UVH and VUVL depend on the configuration of SL pin as shown in Table 8-2. Table 8-2 Relationship between SL pin and the function of OUT1 pin Parameter SL = Open SL = GND Startup Circuit Operation Voltage, VSTON 17 V 30 V UVLO Operation Stop Voltage, VUVH 8.0 V 18.0V UVLO Operation Start Voltage, VUVL 7.5 V 16.0V The startup time until OUT2 pin voltage becomes 5 V depends on capacitance of C2. Figure 8-3 shows reference value of startup time as a function of C2 value.
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 8 Mar. 30, 2016 Figure 8-3 The reference startup time of OUT2 pin After startup, there is two way of suppplying power to IC. In case the power of IC continues to be supplied via ST pin , OUT1 pin voltage becomes VOUT1 (9V or 20V refer to Table 8-1). In case the power of IC is supplied from external power supply, OUT1 pin is connect ed to the auxiliary winding of external power supply. Since the power supply pin can be switched from ST pin to OUT1 pin, the power dissipation of the startup circuit can be eliminated after startup process. VAC C2 D P BR1 OUT1 GND ST 5U1 VD External power supply Figure 8-4 In case the power of IC is supplied from external power supply After external power supply starts, when the auxiliary winding voltage, VD, is lower than V OUT1, OUT1 pin voltage keeps VOUT1. When V D increases and OUT1 pin voltage becomes higher than V OUT1, the startup circuit of IC is cut automatically. Then OUT1 pin voltage becomes the rectified and smoothed VD voltage. The number of turns of auxiliary winding D is set such that OUT1 pin voltage, VOUT1(D), becomes within the range of Expression (1) in the specification of the input voltage range and output load range of the power supply. V35VV OUT1(D)UVH (1) Where, VUVH is UVLO Operation Stop Voltage. V UVH depends on the setting of SL pin (refer to Table 8-2). The diode D2 should be a fast recovery diode since a high frequency switching current flows to D2.
8.3 Current Sink Function
When the output voltage of OUT2 pin is OFF, the Current Sink Function prevents the output voltage of OUT2 pin from varying by external factor. When this function is used, SINK pin is connected to OUT2 pin as shown in Figure 8-5. GND UVLO Linier Regulator OUT2 OUT1 SINK ISINK QSI Figure 8-5 SINK pin peripheral circuit Figure 8-6 shows Current Sink Function operational waveforms. When OUT1 pin voltage decreases UVLO Operation Stop Voltage, V UVL, the output of OUT2 pin becomes Low state. At the same time, QSI turns on and the sink current flows into SINK pin . Thus the output of OUT2 pin is fixed Low state immediately. When OUT1 pin voltage increase s to UVLO Operation Start Voltage, V UVH, or more, Q SI turns off and OUT2 pin outputs VOUT2 = 5 V. The value of R1 connected between SINK pin and OUT2 pin should be selected considering the range of the absolute maximum ratings of SINK pin current. OUT1 pin voltage ST pin current VUVH VUVL ISINK OUT2 pin voltage Figure 8-6 Current Sink Function operational waveforms. 0.001 0.01 0.1 1 10 100 Startup time (s) Capacitance of C2 (μF) SL=Open SL=0V
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 10 Mar. 30, 2016 10. Performance Curves
10.1 Regulation Curves of OUT1 Pin
Relationship between VST and VOUT1 (IOUT1 = 0 mA) Relationship between VOUT1 and IOUT1 (VST = 60 V)
10.2 Regulation Curves of OUT2 Pin
Relationship between VOUT1 and VOUT2 (IOUT2 = 0 mA) Relationship between VOUT2 and IOUT2 8.4 8.6 8.8 9.0 9.2 9.4 0 100 200 300 400 500 600 VOUT1 [V] VST [V] 19.6 19.8 20.0 20.2 20.4 20.6 0 100 200 300 400 500 600 VOUT1 [V] VST [V] 8.4 8.6 8.8 9.0 9.2 9.4 VOUT1 [V] IOUT1 [mA] 19.6 19.8 20.0 20.2 20.4 20.6 VOUT1 [V] IOUT1 [mA] 4.6 4.8 5.0 5.2 5.4 5.6 5 10 15 20 25 30 35 VOUT2 [V] VOUT1 [V] 4.6 4.8 5.0 5.2 5.4 5.6 15 20 25 30 35 VOUT2 [V] VOUT1 [V] 4.6 4.8 5.0 5.2 5.4 5.6 0 2 4 6 8 10 VOUT2 [V] IOUT2 [mA] 4.6 4.8 5.0 5.2 5.4 5.6 0 2 4 6 8 10 VOUT2 [V] IOUT2 [mA] SL = Open SL = Open SL = Open SL = Open SL = GND SL = GND SL = GND SL = GND
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 11 Mar. 30, 2016
10.3 Typcal Operation Waveform
Normal Operation Waveform AC 80 V (SL = GND) AC 265 V (SL = GND) (Ch1: AC, Ch2: OUT1, Ch3: OUT2) (Ch1: AC, Ch2: OUT1, Ch3: OUT2) Operation Waveform when Input Voltage is Varied AC 80 V→AC 265 V (SL = Open) AC 265V→AC 80 V (SL = Open) (Ch1: AC, Ch2: OUT1, Ch3: OUT2) (Ch1: AC, Ch2: OUT1, Ch3: OUT2) AC 80 V→AC 265 V (SL = GND) AC 265V→AC 80 V (SL = GND) (Ch1: AC, Ch2: OUT1, Ch3: OUT2) (Ch1: AC, Ch2: OUT1, Ch3: OUT2)
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 12 Mar. 30, 2016 Operation Waveform when the Load of OUT2 Pin is Varied IOUT = 0 mA→10 mA (SL = Open) IOUT = 10 mA→0 mA (SL = Open) (Ch2: OUT1, Ch3: OUT2, Ch4: IOUT2) (Ch1: OUT1, Ch2: OUT1, Ch3: IOUT2) IOUT = 0 mA→10 mA (SL = GND) IOUT = 10 mA→0 mA (SL = GND) (Ch2: OUT1, Ch3: OUT2, Ch4: IOUT2) (Ch1: OUT1, Ch2: OUT1, Ch3:IOUT2)
LC201S-DS Rev.1.2 SANKEN ELECTRIC CO.,LTD. 13 Mar. 30, 2016 IMPORTANT NOTES All data, illustrations, graphs, tables and any other information included in this document as to Sanken’s products listed herein (the “Sanken Products”) are current as of the date this document is issued . All contents in this document are subject to any change without notice due to improvement of the Sanken Products , etc. Please make sure to confirm with a Sanken sales representative that the contents set forth in this document reflect the latest revisions before use. The Sanken Products are intended for use as components of general purpose electronic equipment or apparatus (such as home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). Prior to use of the Sanken Products, please put your signature, or affix your name and seal, on the specification documents of the Sanken Products and return them to Sanken. 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