CL1A20-M

CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Features • Limits regulated current • 5mA, 10mA, 15mA, 20mA versions • Rejects 50Hz / 60Hz ripple • Low pin count • 250V maximum operating voltage • Zero external components • Can be paralleled for higher current Description The CL1 product family are temperature compensated unipolar current regulators with versions available from 5mA to 20mA. It is designed to be used under a wide range of voltages, from 6V to 200V DC. The CL1 is primarily intended as a current limiting LED driver for serial LED applications in industrial lamp indicators, signage, accent and automotive lightning. Other applications include constant current source and sink. The CL1 temperature coefficient is optimized from -40 oC to 125oC. The CL1 will source or sink constant current. The CL1 will likely require a heat sink connected to the Source (pin 2). Absolute Maximum Ratings1 Maximum operating voltage2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250V DC Operating free air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 oC to 85oC Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 oC to 85oC ESD tolerance, human body model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500V Note 1: Stresses beyond “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended period may impact device reliability. Note 2: All voltages are with respect to Source. Recommended Operating Conditions Min Max Unit 6 200 V DC Operating free air temperature -40 85 o C Operating chip temperature -40 135 o C SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated Operating Voltage www.simplechips.com 1/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Thermal Characteristics3 Ambient Temperature (25oC) unless otherwise specified Parameter Min Typ Max Unit SOT223 thermal resistance minimum copper layout 160 o C/Watt SOT223 thermal resistance (0.60inch x 0.50inch) 88 o C/Watt SOT223 thermal resistance (1.0inch x 1.0inch) 67 o C/Watt TO252 thermal resistance minimum copper layout 110 o C/Watt TO252 thermal resistance (0.60inch x 0.50inch) 75 o C/Watt TO252 thermal resistance (1.0inch x 1.0inch) 50 o C/Watt Note 3: Footprint copper layout size based on Package Heating Test Board (page 11) Terminal Definition Terminal Name Pin No. Type Description Sink 1 HV Input Sinks the load current Source 2 VH Input Usually Ground. Sources the load current. SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 2/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Functional Block Diagram Concept of Operation This chip is powered by applying a voltage difference between Sink and Source terminal. As the voltage rises, the N-Channel MOSFET begins to conduct current between Sink and Source terminals. The temperature compensated source resistor senses this current and provides this feedback voltage to the non-inverting input of the operational amplifier. The operational amplifier compares the feedback voltage with the reference voltage provided by a p-n junction. The operational amplifier drives the gate of the N-channel MOSFET such that the feedback voltage and the reference voltage remain equal. p-n junctions exhibit a negative temperature coefficient of approximately -2mV/ oC. The Source resistor is temperature compensated to match the temperature coefficient of the p-n junction. In this way, the regulated current flowing between Sink and Source will be (to a first order) independent of the chip junction temperature. The power dissipated by the chip is given simply as I lim * (VSink - VSource). The chip will likely require a heat sink mechanically connected to the Source terminal (pin 2). SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 3/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Electrical Characteristics VSink - VSource = 20V, Temp = 25oC unless otherwise specified 20mA nominal device Parameter Regulated Current (Ilim) at 25oC Min Typ Max Unit 18.5 21.2 24.0 mA Regulated Current (Ilim) at -40oc 19.1 mA Regulated Current (Ilim) at +85oC 21.6 mA 24 A / oC Absolute Temperate Coefficient Minimum Operating Voltage (limits current to 90% of I lim) 3.5 4.7 6.0 V Voltage Coefficient 10V to 200V (pulse 10mSec) 1.0 2.0 mA / 100V Stabilization time to 10% of final value 2.0 Sec Transient response 10% to 90% 300 nSec 15mA nominal device Parameter Regulated Current (Ilim) at 25oC Min Typ Max Unit 13.9 15.9 18.0 mA Regulated Current (Ilim) at -40oc 14.3 mA Regulated Current (Ilim) at +85oC 16.2 mA 18 A / oC Absolute Temperate Coefficient Minimum Operating Voltage (limits current to 90% of I lim) 4.2 5.5 V Voltage Coefficient 20V to 250V (pulse 10mSec) 0.75 1.5 mA / 100V Stabilization time to 10% of final value 2.0 Sec Transient response 10% to 90% 300 nSec SimpleChips Technology Inc. 3.0 Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 4/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Electrical Characteristics (cont.) VSink - VSource = 20V, Temp = 25oC unless otherwise specified 10mA nominal device Parameter Regulated Current (Ilim) at 25oC Min Typ Max Unit 9.3 10.6 12 mA Regulated Current (Ilim) at -40oc 9.5 mA Regulated Current (Ilim) at +85oC 10.8 mA 12 A / oC Absolute Temperate Coefficient Minimum Operating Voltage (limits current to 90% of I lim) 2.5 3.7 5.0 V Voltage Coefficient 20V to 250V (pulse 10mSec) 0.5 1.0 mA / 100V Stabilization time to 10% of final value 2.0 Sec Transient response 10% to 90% 300 nSec 5mA nominal device Parameter Regulated Current (Ilim) at 25oC Min Typ Max Unit 4.6 5.3 6.0 mA Regulated Current (Ilim) at -40oc 4.8 mA Regulated Current (Ilim) at +85oC 5.4 mA 6 A / oC Absolute Temperate Coefficient Minimum Operating Voltage (limits current to 90% of I lim) 3.2 4.5 V Voltage Coefficient 20V to 250V (pulse 10mSec) 0.25 0.5 mA / 100V Stabilization time to 10% of final value 2.0 Sec Transient response 10% to 90% 300 nSec SimpleChips Technology Inc. 2.0 Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 5/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Characteristic Curves (25oC, 20mA version) Note 4: Footprint size based on Package Heating Test Board (page 11) SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 6/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Characteristic Curves (25oC, 20mA version) Note 5: Footprint size based on Package Heating Test Board (page 11) SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 7/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Characteristics curves (25oC, 20mA version) SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 8/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Typical Application Circuits SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 9/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Package Dimensions 3-Lead TO-252 (DPAK) Front view Side view Rear view Side view Rear view 3-Lead SOT-223 Front view SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 10/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Thermal properties test boards: (Schematics not to scale) SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 11/12 CL1 Unipolar Current Regulator 5-20mA Temperature Compensated May 2021 Product Identification Codes PART NO. X Device XX Internal Use - Regulated Current XX - XX Package Type Media Device: CL1 = Temperature Compensated Unipolar Current Regulator Internal use: A B C = Internal Use Regulated Current: 5 10 15 20 = = = = 5mA 10mA 15mA 20mA Package: M ST = = SOT-223 TO-252 (DPAK) Media Type: B T TR = = = Bulk Samples Tubes Tape & Reel SimpleChips Technology Inc. Copyright 2021, SimpleChips Technology Incorporated www.simplechips.com 12/12