PDF LM340 Data sheet ( Hoja de datos )

Número de pieza	LM340
Descripción	THREE TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
Fabricantes	ON Semiconductor
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No Preview Available ! Order this document by LM340/D Three-Terminal Positive Fixed Voltage Regulators This family of fixed voltage regulators are monolithic integrated circuits capable of driving loads in excess of 1.0 A. These three–terminal regulators employ internal current limiting, thermal shutdown, and safe–area compensation. Devices are available with improved specifications, including a 2% output voltage tolerance, on A–suffix 5.0, 12 and 15 V device types. Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents. This series of devices can be used with a series–pass transistor to boost output current capability at the nominal output voltage. • Output Current in Excess of 1.0 A • No External Components Required • Output Voltage Offered in 2% and 4% Tolerance* • Internal Thermal Overload Protection • Internal Short Circuit Current Limiting • Output Transistor Safe–Area Compensation LM340, A Series THREE–TERMINAL POSITIVE FIXED VOLTAGE REGULATORS SEMICONDUCTOR TECHNICAL DATA T SUFFIX PLASTIC PACKAGE CASE 221A Pin 1. Input 2. Ground 3. Output 1 2 3 Heatsink surface is connected to Pin 2. Simplified Application ORDERING INFORMATION Device Output Voltage and Tolerance Operating Temperature Range LM340T–5.0 LM340AT–5.0 5.0 V ± 4% 5.0 V ± 2% LM340T–6.0 6.0 V ± 4% LM340T–8.0 8.0 V ± 4% LM340T–12 LM340AT–12 12 V ± 4% 12 V ± 2% TJ = 0° to +125°C LM340T–15 15 V ± 4% LM340AT–15 15 V ± 2% LM340T–18 18 V ± 4% LM340T–24 24 V ± 4% * 2% regulators are available in 5, 12 and 15 V devices. Package Plastic Power Input Cin* 0.33µF LM340–XX Output CO** A common ground is required between the input and the output voltages. The input voltage must remain typically 1.7 V above the output voltage even during the low point on the input ripple voltage. XX these two digits of the type number indicate voltage. * Cin is required if regulator is located an appreciable distance from power supply filter. ** CO is not needed for stability; however, it does improve transient response. If needed, use a 0.1 µF ceramic disc. MOTOROLA ANALOG IC DEVICE DATA © Motorola, Inc. 1996 Rev 1 1 1 page LM340, A Series LM340–6.0 ELECTRICAL CHARACTERISTICS (Vin = 11 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.) Characteristics Symbol Min Typ Max Output Voltage (TJ = +25°C) IO = 5.0 mA to 1.0 A VO 5.75 6.0 6.25 Line Regulation 9.0 Vdc to 21 Vdc 8.0 Vdc to 25 Vdc (TJ = +25°C) 9.0 Vdc to 13 Vdc, IO = 1.0 A 8.3 Vdc to 21 Vdc, IO = 1.0 A (TJ = +25°C) Load Regulation 5.0 mA ≤ IO ≤ 1.0 A 5.0 mA ≤ IO ≤ 1.5 A (TJ = +25°C) 250 mA ≤ IO ≤ 750 mA (TJ = +25°C) Output Voltage 8.0 ≤ Vin ≤ 21 Vdc, 6.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W Regline – – – – – 60 – 60 – 30 – 60 Regload – – – – 60 – 60 – 30 VO 5.7 – 6.3 Quiescent Current IO = 1.0 A TJ = +25°C Quiescent Current Change 8.0 ≤ Vin ≤ 25 Vdc, IO = 500 mA 5.0 mA ≤ IO ≤ 1.0 A, Vin = 11 V 8.6 ≤ Vin ≤ 21 Vdc, IO = 1.0 A Ripple Rejection IO = 1.0 A (TJ = +25°C) IB – – 8.5 – 4.0 8.0 ∆IB – – 1.0 – – 0.5 – – 1.0 RR 59 78 – Dropout Voltage Output Resistance (f = 1.0 kHz) Short Circuit Current Limit (TJ = +25°C) Output Noise Voltage (TA = +25°C) 10 Hz ≤ f ≤ 100 kHz VI – VO – 1.7 – rO – 2.0 – ISC – 1.9 – Vn – 45 – Average Temperature Coefficient of Output Voltage IO = 5.0 mA TCVO – ±0.7 – Peak Output Current (TJ = +25°C) Input Voltage to Maintain Line Regulation (TJ = +25°C) IO = 1.0 A IO – 2.4 – 8.3 – – NOTE: 1. Tlow to Thigh = 0° to +125°C Unit Vdc mV mV Vdc mA mA dB Vdc mΩ A µV mV/°C A Vdc MOTOROLA ANALOG IC DEVICE DATA 5 5 Page LM340, A Series LM340–18 ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.) Characteristics Symbol Min Typ Max Output Voltage (TJ = +25°C) IO = 5.0 mA to 1.0 A VO 17.3 18 18.7 Line Regulation 21.5 Vdc to 33 Vdc 21 Vdc to 33 Vdc (TJ = +25°C) 24 Vdc to 30 Vdc, IO = 1.0 A 21 Vdc to 33 Vdc, IO = 1.0 A (TJ = +25°C) Load Regulation 5.0 mA ≤ IO ≤ 1.0 A 5.0 mA ≤ IO ≤ 1.5 A (TJ = +25°C) 250 mA ≤ IO ≤ 750 mA (TJ = +25°C) Output Voltage 21 ≤ Vin ≤ 33 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W Regline – – – – – 180 – 180 – 90 – 180 Regload – – – – 180 – 180 – 90 VO 17.1 – 18.9 Quiescent Current IO = 1.0 A TJ = +25°C Quiescent Current Change 21 ≤ Vin ≤ 33 Vdc, IO = 500 mA 5.0 mA ≤ IO ≤ 1.0 A, Vin = 27 V 21 ≤ Vin ≤ 33 Vdc, IO = 1.0 A Ripple Rejection IO = 1.0 mA (TJ = +25°C) IB – – 8.5 – 4.0 8.0 ∆IB – – 1.0 – – 0.5 – – 1.0 RR 53 69 – Dropout Voltage Output Resistance (f = 1.0 kHz) Short Circuit Current Limit (TJ = +25°C) Output Noise Voltage (TA = +25°C) 10 Hz ≤ f ≤ 100 kHz VI – VO – 1.7 – rO – 2.0 – ISC – 500 – Vn – 110 – Average Temperature Coefficient of Output Voltage IO = 5.0 mA TCVO – ±2.3 – Peak Output Current (TJ = +25°C) Input Voltage to Maintain Line Regulation (TJ = +25°C) IO = 1.0 A IO – 2.4 – 21 – – NOTE: 1. Tlow to Thigh = 0° to +125°C Unit Vdc mV mV Vdc mA mA dB Vdc mΩ A µV mV/°C A Vdc MOTOROLA ANALOG IC DEVICE DATA 11 11 Page

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