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ACPL-K370-500E Datasheet(PDF) 1 Page - AVAGO TECHNOLOGIES LIMITED |
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ACPL-K370-500E Datasheet(HTML) 1 Page - AVAGO TECHNOLOGIES LIMITED |
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1 / 13 page  ACPL-K370, ACPL-K376 Isolated Voltage/Current Detector Data Sheet Description The ACPL-K370 and ACPL-K376 are voltage/current threshold detection optocouplers. The ACPL-K376 is a low- current version of the ACPL-K370. To obtain lower current operation, the ACPL-K376 uses a high-efficiency AlGaAs LED which has higher light output at lower drive currents. Both devices have a threshold sensing input buffer IC that allows threshold levels to be set by a single external resistor over a wide range of input voltages. The input buffer has several performance enhancing features: hysteresis for extra noise immunity and switching immunity, a diode bridge for easy use with AC input signals, and internal clamping diodes to protect the buffer and LED from over-voltage and over-current tran- sients. Because threshold sensing is done prior to driving the LED, variations in optical coupling from the LED to the detector will not effect the threshold levels. The ACPL-K370 input buffer IC has a nominal turn-on threshold of 3.8 V(VTH+) and 2.77 mA (ITH+). The buffer IC for the ACPL-K376 is designed for lower input current. The nominal turn-on threshold for the ACPL-K376 is 3.8 V (VTH+) and 1.32 mA (ITH+), which reduces power dissipa- tion by 52%. The high-gain output stage features an open-collector output for both TTL compatible saturation voltages and CMOS compatible breakdown voltages. By combining many unique functions in a single package, the ACPL-K370 and ACPL-K376 are ideal components for indus- trial control computer input boards and other applications where a predetermined input threshold level is needed. Functional Diagram Features x ± 5% voltage detection accuracy x Wide AC or DC detection range: up to 1140 Vpeak x User configurable single/dual detection levels x Built-in hysteresis improves noise immunity x Very low threshold current: 1.32 mA (ACPL-K376) x Logic compatible output x Wide output supply voltage: 2 V to 18 V x –40°C to +105°C operating temperature range x SSO-8 package with 8 mm creepage and clearance x Safety and regulatory approval (pending): – IEC/EN/DIN EN 60747-5-5: 1140 Vpeak working insulation voltage – UL 1577: 5000 Vrms/1minute double protection rating – CSA: Component Acceptance Notice #5 Applications x Limit switch sensing x Low voltage detector x AC mains and DC-link voltage detection x Relay contact monitor x Relay coil voltage monitor x Current sensing x Microprocessor interfacing x Telephone ring detection Connection Diagram 1 2 3 4 8 7 6 5 AC1 DC+ DC AC2 VCC VO GND TRUTH TABLE (POSITIVE LOGIC) INPUT H L OUTPUT L H NC ICC IO D1 D2 D3 D4 Figure 1. Functional Diagram AC/DC POWER CONTROLLER ISOLATION BARRIER ACPL-K370 ACPL-K376 GND1 GND2 RX Figure 2. Connection Diagram |
Similar Part No. - ACPL-K370-500E |
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Similar Description - ACPL-K370-500E |
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