Photocoupler Part Name: LA212 Features ‧SOP package 4 Pin type in miniature design ‧80% minimum current transfer ratio ‧1500V rms Input/Output isolation ‧AC input. Applications ‧Telephones ‧Programmable controllers ‧System appliances, measuring instruments. ‧Signal transmission between circuits of different potentials and impedances. Dimensions(Unit: mm inch) 4 3 4 3 1 2 Letex LA212 16A 1 2 1. 2. 3. 4. - 1 - LED Anode, Cathode LED Cathode, Anode Emitter Collector Letex Technology Corp. Photocoupler Part Name: LA212 Absolute Maximum Ratings (Ambient Temperature: 25℃) Item Symbol Rating Units Forward Current Input Reverse Voltage Peak Forward Current Collector to Emitter Voltage Emitter to Collector Voltage Output Collector Current Power Dissipation I/O Breakdown Voltage Power Dissipation Storage Temperature Operating Temperature Soldering Temperature mA V A V V mA mW Vrms mW ℃ ℃ ℃ IF VR IFP Vceo Veco Ic Pc VI/O PD Tstg Top TSol 50 5 1 40 6 50 150 1500 200 -55 to +125 -55 to +100 260 Output Input Electrical Specifications (Ambient Temperature: 25℃) Item Symbol MIN. TYP. Forward Voltage Reverse Current Junction Capacitance C-E Breakdown Voltage E-C Breakdown Voltage Collector Dark Current VF IR Ct Vceo Veco Iceo 1.2 Note Ic=1mA, IB=0 IE=100µA, IB=0 RH=60%, 1min 10 seconds max. MAX. Units 1.4 - V µA pF V V nA IF= ± 20mA ﹪ IF= ± 1mA, Vce=5V V Ω pF µs µs IF=±20mA, Ic=1mA V=500V DC V=0, f=1.0MHz 25 35 5 100 Conditions V=0, f=1.0KHz Ic=0.5mA Ie=0.1mA Vce=20V, IF=0 BIN GRADE Coupled Current Transfer Ratio Collector Saturation Voltage Isolation Resistance Isolation Capacitance Rise Time Fall Time A CTR B C D Vce(sat) RI/O CI/O 80 130 200 300 tr tf - 2 - 160 260 240 600 0.4 9 10 1.0 6 6 Vce=5V, Ic=2mA, RL=100Ω Letex Technology Corp. Photocoupler Reference Data Collector power dissipation Vs. Ambient temperature Forward current Vs. Ambient temperature Peak forward current Vs. Duty ratio Forward current (mA) 50 40 30 20 10 2000 150 Peak forward current ( mA) Collector power dissipation (mW) 60 100 50 Pulse width 100us Ta = 25℃ 1000 500 200 100 50 20 0 0 -25 0 25 50 75 100 125 10 -25 Ambient temperature (℃) 0 25 50 75 100 Forward current Vs. Forward voltage I F = 30mA 25 Collector current (mA) 140 25℃ 120 CTR (%) 50 20 10 5 -1 2 5 10 0 2 5 10 Collector current Vs. Collector-Emitter voltage Vce = 5V Ta = 25℃ 160 0℃ 100 5 10 30 25℃ 50℃ -2 2 Duty ratio Current transfer ratio Vs. Forward current 180 Ta = 75℃ 200 100 80 60 Ta = 25℃ 20mA Pc(Max) 20 15 10mA 10 5mA 40 5 20 2 1 1 0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 Forward voltage (V) 5 10 20 50 0 Relative CTR Vs. Ambient temperature Collector-Emitter saturation voltage (V) 100 50 0 IF = 20mA Ic = 1mA 0.14 25 50 75 4 5 6 7 8 9 Collector dark current Vs. Ambient temperature Vce = 20V 0.12 0.10 0.08 0.06 10 -6 10 -7 10 -8 10 -9 0.04 10 -10 0.02 10 -11 0 0 3 10 -5 0.16 IF = 5mA Vce = 5V 2 Collector-Emitter voltage (V) Collector-Emitter saturation voltage Vs. Ambient temperature 150 -25 1 Forward current (mA) Collector dark current (A) Forward current (mA) 5 10 200 500 Relative CTR ( %) -3 125 Ambient temperature (℃) 100 -25 Ambient temperature (℃) 0 25 50 75 100 -25 Ambient temperature (℃) Collector-Emitter saturation voltage Vs. Forward current 0 25 50 75 100 Ambient temperature (℃) Test circuit for resopnse time Response time Vs. Load resistance 1.2 Ic=0.5mA 200 Response time ( μ s) 7mA 5mA 3mA 0.8 0.6 Vcc 500 100 1mA Collector-Emitter satureation voltage (V) Ta = 25℃ 1.0 0.4 Vce = 2V Ic = 2mA Ta = 25℃ Input Input RD 50 RL Output Output 10% 20 90% 10 5 2 1 0.2 0.5 0.2 0 0.1 0 10 20 30 40 Forward current (mA) 50 60 0.1 0.2 0.5 1 2 5 10 Load resistance (k Ω ) - 3 - Letex Technology Corp.