KK54123 GROUND FAULT INTERRUPTER EARTH LEAKAGE CURRENT DETECTOR KK54123 Description The KK54123N/D is designed for use in earth leakage circuit interrupters for operation directly off the AC Line in breakers. It contains pre regulator, main regulator, after regulator, differential amplifier, level comparator, latch circuit. The input in the differential amp latch circuit. The input in the differential amplifier is connect to the secondary node of zero current transformer. The level comparator generates high level when earth leakage current is greater than some level. Feature • Low Power Consumption (PD=5mW) 100V/200V • 100V/200V Common Built-in Voltage Regulator • High Gain Differential Amplifier • High Input Sensitivity (VT = 6.1mV Typ.) • Minimum External Parts • Large Surge Margin • Wide Operating Temperature Range (TА= -40 to 85°C) • High Noise Immunity • Meet U. L. 943 standards Absolute Maximum Ratings Supply Voltage Supply Current Power Dissipation Operating Temperature Storage Temperature Pin Configuration (Top View) KK54123 20V 8mA 200m W - 40 to 85°C - 55 to 125°C ORDERING INFORMATION KK54123N Plastic KK54123D SOIC KK54123S SIP-8 TA = -40° to 85° C for all packages. KK54123 Block Diagram KK54123 Recommended Operating Condition: TA=-30°C to 80°C PARAMETER Supply Voltage Vs-GND Capacitor OS-GND Capacitor SYMBOL V+ Cvs Cos MIN. 12 1 TYP. MAX UNIT V µF µF 1 Electrical Characteristics PARAMETER SYMBOL Supply Current 1 lS1 * Trip Voltage VT Differential Amplifier Output Current 1 Differential Amplifier Output current 2 ITD1 CONDTIONS V+=12V, VR - VI = 30 mV TEMP. (°C) -30 25 85 -30 85 25 MIN. TYP. MAX. UNIT 4 400 6.1 580 530 480 9 -12 - -30 mV (rms) µA 25 17 - 37 µA -30 25 85 25 -200 -100 -75 0.7 - 1.4 V µA Output Current IO SC ON Voltage VSC ON V+ = 16V, VR - VI = X V+ = 16 V, VR - VI = 30 mV VOD = 1.2 V V+ = 16 V, VR - VI = short VOD = 0.8 V lSI = 580µA VSC = 1.4 V lSI = 530µA VOS = 0.8 V lSI = 480µA V+ = 16 V SC Input Current ISC ON V+ = l2V 25 - - 5 µA - - µA 4.3 - 6.7 V 0.4 - 2 V VSM ISM = 7 mA -30 85 -30 85 -30 85 25 200 VIDC V+ = 12 V, VOSL = 0.2 V V+ = 12 V, IIC = 20 mA IIDC = 100mA 20 - 28 V IS2 VOS = 0.5 V, VR - VI = X -30 85 25 - - 1200 µA 0.5 25 1 ITD2 Output "L" Current IOSL Input Clamp Voltage Differential Input Clamp Voltage Max. Current Voltage Supply Current 2 VIC Latch Circuit Off Supply Voltage Response Time V+ OFF TON V+ = 16 V, VR - VI = 0.3 V µA V - 4 ms KK54123 Typical Performance Curves KK54123 KK54123 KK54123 Typical Application Supply voltage circuit is connected as a previous diagram. Please decide constants R1, R2, C4, and C5 of a filter in order to keep at least 12V in Vs, when normal supply current flows. In this case, please connect C4 (more than 1 ㎌) and C2 (less than 1 ㎌). ZCT and load resistance RL of ZCT are connected between input pin① and ②. In this case protective resistance (R3=100Ω) must be insulted. Sensitivity current is regulated by RL, and output of amplifier shows in pin④. External capacitor C1 between pin④ and GND is used for noise removal. When large current is grounded in the primary side (AC line) of ZCT, the wave form in the secondary side of ZCT is distorted and some signals doesn’t appear in the output of amplifier. So please connect a varistor or a diode (2pcs.) to ZCT in parallel. Latch circuit is used to inspect the output level of amplifier and to supply gate current on the external SCR. When input pin becomes more than 1.1V (Typ.) latch circuit operates and supply gate current in the gate of SCR connected to the output pin⑦. Pin⑥ can be used in the open state, but please connect capacitor (about 0.047 ㎌) between pin⑥ and ⑦. Capacitor C6 between pin① and GND is used to remove noise and is about 0.047 ㎌. KK54123 N SUFFIX PLASTIC DIP (MS – 001BA) A Dimension, mm 5 8 B 1 4 MIN MAX A 8.51 10.16 B 6.1 7.11 5.33 C L F Symbol C D 0.36 0.56 F 1.14 1.78 -T- SEATING PLANE N G M K 0.25 (0.010) M J H D T NOTES: 1. Dimensions “A”, “B” do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side. G 2.54 H 7.62 J 0° 10° K 2.92 3.81 L 7.62 8.26 M 0.2 0.36 N 0.38 D SUFFIX SOIC (MS - 012AA) Dimension, mm A 8 5 B H 1 G P 4 D K MIN MAX A 4.8 5 B 3.8 4 C 1.35 1.75 D 0.33 0.51 F 0.4 1.27 R x 45 C -T- Symbol SEATING PLANE J F 0.25 (0.010) M T C M M G 1.27 H 5.72 J 0° 8° K 0.1 0.25 1. Dimensions A and B do not include mold flash or protrusion. M 0.19 0.25 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B ‑ 0.25 mm (0.010) per side. P 5.8 6.2 R 0.25 0.5 NOTES: KK54123