NTE7124 Integrated Circuit Positive 5V Regulator w/Reset Function Description: The NTE7124 is a reset function–provided, general–purpose voltage regulator IC in a 5–Lead TO220 type package with output current 500mA designed for use in microcomputers. Features: D Reset Function (Power Supply Voltage Monitor: Generates a Reset Signal at a Power–ON and Temporal Power–Down) D On–Chip ASO Protector D On–Chip Thermal Protector D On–Chip Overcurrent Limiter Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Input Voltage, VINmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Reset Pin Supply Voltage, Vreset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Allowable Power Dissipation, Pdmax No Fin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.75W TC = +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +80°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Voltage VIN 7.5 – 20.0 V Output Current IO 5 – 500 mA Electrical Characteristics: (TA = +25°C, VIN = 10V, IO = 0.35A, CO = 10µF unless otherwise specified) Parameter Output Voltage Line Regulation LN1 LN2 Symbol Test Conditions Min Typ Max Unit VO1 TJ = +25°C 4.8 5.0 5.2 V VO2 7V ≤ VIN ≤ 20V, 5mA ≤ IO ≤ 0.35A 4.75 – 5.25 V – 1.0 100 mV – 0.5 50 mV ∆VO TJ = +25°C, 7V ≤ VIN ≤ 20V IO = 0.2A 8V ≤ VIN ≤ 20V Electrical Characteristics (Cont’d): (TA = +25°C, VIN = 10V, IO = 0.35A, CO = 10µF unless otherwise specified) Parameter Load Regulation LD1 Symbol Test Conditions Min Typ Max Unit TJ = +25°C 5mA ≤ IO ≤ 0.5A – 3.0 100 mV 5mA ≤ IO ≤ 0.2A – 1.5 50 mV LD2 Current Dissipation ICC TJ = +25°C – 3.4 6.0 mA Current Dissipation Variation Line (LN) Load (LD) ∆ICC 8V ≤ VIN ≤ 25V, IO ≤ 0.2A – – 0.8 mA 5mA ≤ IO ≤ 0.35A – – 0.5 mA Output Noise Voltage VNO IO = 5mA, 10Hz ≤ f ≤ 100kHz – 60 – µV Ripple Rejection RR IO = 0.1A 62 80 – dB 62 77 – dB – 2.0 2.5 V IO = 0.3A Dropout Voltage TJ = +25°C, f = 120Hz, 8V ≤ VIN ≤ 18V Vdrop Peak Output Current IOP TJ = +25°C – 1.1 – A Short–Circuit Current IOSC TJ = +25°C, VIN = 35V – 0.02 – A ∆VO/∆T IO = 5mA, TJ = +25° to +125°C – –0.3 – mV/°C – – 0.2 V – V Temperature Coefficient of Output Voltage ’L’ Reset Output Voltage VORL VO ≤ 4.5V, IO = 5mA Reset Threshold Voltage VRT IO = 5mA Reset Hysteresis Voltage VRTH IO = 5mA – 100 – mV Reset Output Delay Time td Cd = 0.1µF, IO = 5mA – 10 – ms VO–0.3 VO–0.2 Pin Connection Diagram (Front View) Input Delay Capacitor Output Reset Out GND .408 (10.37 Max 0.45 (1.37) Max .114 (2.9) .619 (15.72) Max .896 (22.76) Max .364 (9.25) Max .850 (21.6) Max .135 (3.45) .150 (3.81) 1 3 2 5 4 .182 (4.62) Max .182 (4.62)