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Details, datasheet, quote on part number:LM340T-8.0
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| Part: | LM340T-8.0 |
| Category: | Power Management => Regulators => Linear Regulators => Positive |
| Description: | Three Terminal Positive Fixed Voltage Regulators |
| Company: | Motorola Semiconductor Products |
| Datasheet: | Download LM340T-8.0 datasheet File size : 211 kB |
| Request For quote: | Find where to buy LM340T-8.0
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Datasheet text preview:
Order this document by LM340/D
LM340, A Series Three-Ter minal 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 threeterminal regulators employ internal current limiting, thermal shutdown, and safearea compensation. Devices are available with improved specifications, including a 2% output voltage tolerance, on Asuffix 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 seriespass transistor to boost output current capability at the nominal output voltage. · Output Current in Excess of 1.0 A
THREETERMINAL POSITIVE FIXED VOLTAGE REGULATORS
SEMICONDUCTOR TECHNICAL DATA
· · · · ·
No External Components Required Output Voltage Offered in 2% and 4% Tolerance* Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor SafeArea Compensation
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
Input
LM340XX
Output CO**
ORDERING INFORMATION
Device LM340T5.0 LM340AT5.0 LM340T6.0 LM340T8.0 LM340T12 LM340AT12 LM340T15 LM340AT15 LM340T18 LM340T24 Output Voltage and Tolerance 5.0 V ± 4% 5.0 V ± 2% 6.0 V ± 4% 8.0 V ± 4% 12 V ± 4% 12 V ± 2% 15 V ± 4% 15 V ± 2% 18 V ± 4% 24 V ± 4% TJ = 0° to +125°C 0° to +125°C Plastic Power Power Operating Temperature Range Package
Cin* 0.33µF
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.
* 2% regulators are available in 5, 12 and 15 V devices.
© Motorola, Inc. 1996
Rev 1
MOTOROLA ANALOG IC DEVICE DATA
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LM340, A Series
MAXIMUM RATINGS (TA = +25°C unless otherwise noted.)
Rating Input Voltage (5.0 V 18 V) Input Voltage (24 V) Power Dissipation and Thermal Characteristics Plastic Package TA = +25°C Derate above TA = +25°C Thermal Resistance, JunctiontoAir TC= +25°C Derate above TC = +75°C (See Figure 1) Thermal Resistance, JunctiontoCase Storage Temperature Range Operating Junction Temperature Range Symbol Vin Value 35 40 Unit Vdc
PD 1/JA JA PD 1/JA JC Tstg TJ
Internally Limited 15.4 65 Internally Limited 200 5.0 65 to +150 0 to +150
W mW/°C °C/W W mW/°C °C/W °C °C
Representative Schematic Diagram
1.0k
1.0k 210 6.7V 16k 100 1.0k 3.0k 10pF 6.4k 5.6k 300 13 200
Input
300 3.6k
0.12
520 40 pF 6.0k 2.0k 3.9k
50
200 Output
2.6k
6.0k
2.8k
Gnd
2
MOTOROLA ANALOG IC DEVICE DATA
LM340, A Series
LM3405.0 ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
Characteristics Output Voltage (TJ = +25°C) IO = 5.0 mA to 1.0 A Line Regulation (Note 2) 8.0 Vdc to 20 Vdc 7.0 Vdc to 25 Vdc (TJ = +25°C) 8.0 Vdc to 12 Vdc, IO = 1.0 A 7.3 Vdc to 20 Vdc, IO = 1.0 A (TJ = +25°C) Load Regulation (Note 2) 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 7.0 Vin 20 Vdc, 5.0 mA IO 1.0 A, PD 15 W Quiescent Current IO = 1.0 A TJ = +25°C Quiescent Current Change 7.0 Vin 25 Vdc, IO = 500 mA 5.0 mA IO 1.0 A, Vin = 10 V 7.5 Vin 20 Vdc, IO = 1.0 A Ripple Rejection IO = 1.0 A (TJ = +25°C) 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 Average Temperature Coefficient of Output Voltage IO = 5.0 mA Peak Output Current (TJ = +25°C) Input Voltage to Maintain Line Regulation (TJ = +25°C) IO = 1.0 A Symbol VO Regline Regload VO IB IB RR VI VO rO ISC Vn TCVO IO 62 7.3 80 1.7 2.0 2.0 40 ±0.6 2.4 1.0 0.5 1.0 dB Vdc m A µV mV/°C A Vdc 4.0 8.5 8.0 mA 4.75 50 50 25 5.25 Vdc mA 50 50 25 50 mV Min 4.8 Typ 5.0 Max 5.2 Unit Vdc mV
NOTES: 1. Tlow to Thigh = 0° to +125°C 2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
DEFINITIONS
Line Regulation The change in output voltage for a change in the input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that the average chip temperature is not significantly affected. Load Regulation The change in output voltage for a change in load current at constant chip temperature. Maximum Power Dissipation The maximum total device dissipation for which the regulator will operate within specifications. Quiescent Current That part of the input current that is not delivered to the load. Output Noise Voltage The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range.
MOTOROLA ANALOG IC DEVICE DATA
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