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NTE1510 Integrated Circuit 5-Step LED Driver for Linear Scale
Description: The NTE1510 is an integrated circuit in an 8-Lead SIP type package designed for use in level meter applications. This device is capable of driving 5 LEDs to create a bar-type display. In accordance with the input level, the uppermost LED brightness varies to form a linear indicator, making the NTE1510 ideal for use in signal meters and VU meters. A low-voltage reference power supply is built-in, so that the only external components required are LEDs, resistors, and capacitors. Features: D Bar-Type Display of Input Level using 5 LEDs D The Uppermost LED Brightness Varies Linearly With Respect to the Input Level Resulting in a High-Resolution Display with No Radiation. D Built-In Reference Supply D By Changing the External Reference Values, the LED Brightness can be Adjusted D Wide Range of Supply Voltages: VCC = 4V to 18V D High Input Impedance: IIN = 100nA Typ Applications: D Signal Meters D VU Meters D Tuning Meters D General Purpose Display Applications Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Output Breakdown Voltage, BVO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Output Current (Per Pin), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15mA Power Dissipation (Note 1), PdF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550mW Derate Above 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5mW/C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Note 1. With the NTE1510 soldered to a printed circuit board (copper-clad area 4.5cm x 5.5cm, thickness 35, board thickness 2.0mm).
Recommended Operating Conditions: Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4V to 18V Rated Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V Electrical Characteristics: (TA= +25C, VCC = 10V unless otherwise specified)
Parameter Supply Voltage Range Fullscale Input Voltage Step Voltage Input Current Circuit Current Output 1 LED Drive Voltage (Pin6) Output 2 LED Drive Voltage (Pin7) Output 3 LED Drive Voltage (Pin8) Output 4 LED Drive Voltage (Pin1) Output 5 LED Drive Voltage (Pin2) Symbol VCC VINF Vstep IIN ICC VIT(6) VIT(7) VIT(8) VIT(1) VIT(2) VIN = 0V, Note 2 VIN = 0V RL = 1.5k, IL = 100A, Using red GaAIAs LEDs Test Conditions Min 4 - - - - 170 380 580 780 980 Typ 10 1320 210 0.1 5 230 450 660 860 Max 18 - - 1.0 8 300 530 730 940 Unit V mV mV A mA mV mV mV mV mV
1070 1180
Note 2. Current flowing from Pin4 is taken as positive current.
Pin Connection Diagram (Front View) 8 LED3 7 LED2 6 LED1 5 VCC 4 Input 3 GND 2 LED5 1 LED4
.768 (19.52) Max
.118 (3.0) Max
.264 (6.72) Max 1 8 .165 (4.2) Min
.100 (2.54) Typ .700 (17.78)

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