CLT03-2Q3 STMicroelectronics

CLT03-2Q3, CLT03-1SC3 Datasheet Self powered digital input current limiter Features Single and dual isolated channel devices No power supply needed Digital input current limitation Enables input to meet type 1 and 3 characteristic of IEC 61131-2 standard Deglitch filter for EMC robustness High side / Low side compatible Product label Inputs are reverse plugin compatible Drive isolated opto-couplers or non-isolated LVTTL digital input termination Operating ambient temperature range from -30 C to 125 C Two packages SOT23-8L - 650 m pitch QFN-16L - 500 m pitch Complies with the following standards: IEC 61000-4-2 level 1: 4 kV (air discharge) IEC 61000-4-2 level 1: 2 kV (contact discharge) Applications Where current limitation is required in factory automation applications: Programmable logic controller Remote input module Product status link CLT03-2Q3, CLT03-1SC3 Description The CLT03 series is a digital input current limiter which drastically reduces the power dissipation of the digital inputs. It does not require external power supply as the device is activated with the input signal and it consumes no power in off state. The CLT03 series is high side and low side compatible, as well as reverse plugin compatible. It can drive either opto-coupler or 3.3 V LVTTL circuit. The CLT03-2Q3 can be evaluated thanks to the STEVAL-IFP035V1 evaluation board which embeds an isolated and non-isolated digital inputs configuration. DS12302 - Rev 12 - October 2021 www.st.com For further information contact your local STMicroelectronics sales office.CLT03-2Q3, CLT03-1SC3 I/O pin description 1 I/O pin description Table 1. CLT03-1SC3 pins name, type, and description Name Pin Type Description INA 2 Signal input Logic input with current limitation INATT 3 Signal input Logic input with current limitation for non-isolated configuration INB 1 Signal input Logic input with current limitation TP 8 Test input Test pulse input for capacitor VBUF 7 Power output Buffer capacitor OUTN 4 Ground Logic output ground (channel 1 output ground) OUTP 6 Signal output Data output PD 5 Ground Logic output ground with pull down resistor (non-isolated mode) Figure 1. SOT23-8L pinout (top view) Table 2. CLT03-2Q3 pins name, type, and description Name Pin Type Description INA1 / INA2 7 / 3 Signal input Logic input with current limitation INATTL1 / INATTL2 6 / 2 Signal input Logic input with current limitation for non-isolated configuration INB1 / INB2 8 / 4 Signal input Logic input with current limitation TP1 / TP2 9 / 14 Test input Test pulse input for capacitor VBUF1 / VBUF2 10 / 15 Power output Buffer capacitor OUTN1 5 / TAB1 Ground Logic output ground (channel 1 output ground) OUTN2 13 / TAB2 Ground Logic output ground (channel 2 output ground) OUTP1 / OUTP2 11 / 16 Signal output Data output PD1/PD2 12 / 1 Ground Logic output ground with pull down resistor (non-isolated mode) Figure 2. QFN-16L 4.0 x 2.0 pinout (top view) DS12302 - Rev 12 page 2/23