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Details, datasheet, quote on part number:LM340T12
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MC7800, MC7800A, LM340, Three-Ter minal Positive Voltage Regulators
These voltage regulators are monolithic integrated circuits designed as fixedvoltage regulators for a wide variety of applications including local, oncard regulation. These regulators employ internal current limiting, thermal shutdown, and safearea compensation. With adequate heatsinking they can deliver output currents in excess of 1.0 A. Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents.
LM340A Series
THREETERMINAL POSITIVE FIXED VOLTAGE REGULATORS
SEMICONDUCTOR TECHNICAL DATA
· · · · · · · ·
Output Current in Excess of 1.0 A No External Components Required Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor SafeArea Compensation Output Voltage Offered in 2% and 4% Tolerance Available in Surface Mount D2PAK and Standard 3Lead Transistor Packages Previous Commercial Temperature Range has been Extended to a Junction Temperature Range of 40°C to +125°C
T SUFFIX PLASTIC PACKAGE CASE 221A Heatsink surface connected to Pin 2.
1 2 3
Pin 1. Input 2. Ground 3. Output
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MC7805AC LM340AT5 MC7805C LM340T5 MC7806AC MC7806C MC7808AC MC7808C MC7809C MC7812AC LM340AT12 6.0 V 8.0 V 9.0 V 12 V 5.0 V MC7812C LM340T12 MC7815AC LM340AT15 MC7815C LM340T15 MC7818AC MC7818C MC7824AC MC7824C 18 V 24 V 15 V 12 V D2T SUFFIX PLASTIC PACKAGE CASE 936 (D2PAK)
1
2 3
Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2.
STANDARD APPLICATION
Input Cin* 0.33 µF MC78XX Output CO**
ORDERING INFORMATION
Device MC78XXACT Insertion Mount Mount LM340ATXX MC78XXACD2T MC78XXCT LM340TXX MC78XXCD2T XX indicates nominal voltage. 4% Surface Mount 2% TJ = 40° to +125°C 40° to +125°C Surface Mount Insertion Mount Mount Output Voltage Tolerance Operating Temperature Range Package
A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0 V above the output voltage even during the low point on the input ripple voltage. XX, These two digits of the type number indicate nominal 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. Values of less than 0.1 µF could cause instability.
© Motorola, Inc. 1997
Rev 5
MOTOROLA ANALOG IC DEVICE DATA
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MC7800, MC7800A, LM340, LM340A Series
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Rating Input Voltage (5.0 18 V) Input Voltage (24 V) Power Dissipation Case 221A TA = 25°C Thermal Resistance, JunctiontoAmbient Thermal Resistance, JunctiontoCase Case 936 (D2PAK) TA = 25°C Thermal Resistance, JunctiontoAmbient Thermal Resistance, JunctiontoCase Storage Junction Temperature Range Operating Junction Temperature
NOTE: ESD data available upon request.
Symbol VI
Value 35 40
Unit Vdc
PD RJA RJC PD RJA RJA Tstg TJ
Internally Limited 65 5.0 Internally Limited See Figure 13 5.0 65 to +150 +150
W °C/W °C/W W °C/W °C/W °C °C
Representative Schematic Diagram
MC7800
LAT Q17 Vin R24 50 LAT 3 A Q18 Q19 QNPN C3 Q10 QNPN R18 100 k R22 100 Q7 QNPN R17 9.0 k D1 Zener R1 10.66 k Q8 QNPN R2 1.56 k R5 4.5 k Q14 QNPN Q1 C2 3.0 P N+ QNPN 6 Q13 QNPN R6 1.0 k R7 14 k Q4 QNPN Q3 QNPN C1 30 P R21 600 1.0 P D2 Zener R19 27.5 k Q20 QNPN R14 1.0 k R15 680
R23 0.2 Vout 5.01 R30 18 k Sense
Q5 QNPN 2 Q9 QNPN 2 Q12 QNPN R11 15 k Q15 QNPN R20 17500 R16 600 R10 3340(3316ACT) R12 3.0 k R25 6.0 k R26 3.0 k R29 9.0 k R28 9.0 k R27 9.0 k
Q6 QNPN
R9 3.0 k SUB Q11 2
R13 11660
Q2 Q16 QNPN 4 Diode R3 1.8 k R8 5.0 k
This device contains 22 active transistors.
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MOTOROLA ANALOG IC DEVICE DATA
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7805C/LM340T5 Characteristic Output Voltage (TJ = 25°C) Output Voltage (5.0 mA IO 1.0 A, PD 15 W) 7.0 Vdc Vin 20 Vdc 8.0 Vdc Vin 20 Vdc Line Regulation (Note 2) 7.5 Vdc Vin 20 Vdc, 1.0 A 8.0 Vdc Vin 12 Vdc Load Regulation (Note 2) 5.0 mA IO 1.0 A 5.0 mA IO 1.5 A (TA = 25°C) Quiescent Current Quiescent Current Change 7.0 Vdc Vin 25 Vdc 5.0 mA IO 1.0 A (TA = 25°C) Ripple Rejection 8.0 Vdc Vin 18 Vdc, f = 120 Hz Dropout Voltage (IO = 1.0 A, TJ = 25°C) Output Noise Voltage (TA = 25°C) 10 Hz f 100 kHz Output Resistance f = 1.0 kHz Short Circuit Current Limit (TA = 25°C) Vin = 35 Vdc Peak Output Current (TJ = 25°C) Average Temperature Coefficient of Output Voltage Symbol VO VO 4.75 Regline Regload IB IB RR VI VO Vn rO ISC Imax TCVO 62 0.3 0.08 83 2.0 10 0.9 0.6 2.2 0.3 1.0 0.8 dB Vdc µV/VO m A A mV/°C 1.3 1.3 3.2 25 25 6.5 mA mA 0.5 0.8 20 10 mV 5.0 5.25 mV Min 4.8 Typ 5.0 Max 5.2 Unit Vdc Vdc
ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7805AC/LM340AT5 Characteristic Output Voltage (TJ = 25°C) Output Voltage (5.0 mA IO 1.0 A, PD 15 W) 7.5 Vdc Vin 20 Vdc Line Regulation (Note 2) 7.5 Vdc Vin 25 Vdc, IO = 500 mA 8.0 Vdc Vin 12 Vdc, IO = 1.0 A 8.0 Vdc Vin 12 Vdc, IO = 1.0 A, TJ = 25°C 7.3 Vdc Vin 20 Vdc, IO = 1.0 A, TJ = 25°C Load Regulation (Note 2) 5.0 mA IO 1.5 A, TJ = 25°C 5.0 mA IO 1.0 A 250 mA IO 750 mA Quiescent Current Quiescent Current Change 8.0 Vdc Vin 25 Vdc, IO = 500 mA 7.5 Vdc Vin 20 Vdc, TJ = 25°C 5.0 mA IO 1.0 A Ripple Rejection 8.0 Vdc Vin 18 Vdc, f = 120 Hz, IO = 500 mA Dropout Voltage (IO = 1.0 A, TJ = 25°C)
NOTES: 1. Tlow = 40°C for MC78XXAC, C, LM340ATXX, LM340TXX
Symbol VO VO Regline
Min 4.9 4.8
Typ 5.0 5.0
Max 5.1 5.2
Unit Vdc Vdc mV
Regload IB IB RR VI VO 68
0.5 0.8 1.3 4.5 1.3 0.8 0.53 3.2 0.3 0.08 83 2.0
10 12 4.0 10 mV 25 25 15 6.0 0.8 0.8 0.5 dB Vdc mA mA
Thigh = +125°C for MC78XXAC, C, LM340ATXX, LM340TXX 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.
MOTOROLA ANALOG IC DEVICE DATA
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