L7900 STMicroelectronics, L7900 Datasheet

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L7900

Manufacturer Part Number
L7900
Description
NEGATIVE VOLTAGE REGULATORS
Manufacturer
STMicroelectronics
Datasheet

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Part Number:
L7900CV
Manufacturer:
ST
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DESCRIPTION
The L7900 series of three-terminal negative
regulators is available in TO-220, ISOWATT220
TO-3 and D
output voltages, making it useful in a wide range
of applications.These regulators can provide local
on-card regulation, eliminating the distribution
problems associated with single point regulation;
furthermore, having the same voltage option as
the L7800 positive standard series, they are
particularly suited for split power supplies. In
addition, the -5.2V is also available for ECL
system.
they can deliver over 1.5A output current.
Although designed primarily as fixed voltage
regulators, these devices can be used with
external
voltages and currents.
SCHEMATIC DIAGRAM
November 1999
OUTPUT CURRENT UP TO 1.5 A
OUTPUT VOLTAGES OF -5; -5.2; -6; -8; -9;
-12; -15; -18; -20; -22; -24V
THERMAL OVERLOAD PROTECTION
SHORT CIRCUIT PROTECTION
OUTPUT TRANSITION SOA PROTECTION
If adequate heat sinking is provided,
components
2
PAK packages and several fixed
to
obtain
NEGATIVE VOLTAGE REGULATORS
adjustable
1
TO-220
TO-3
2
ISOWATT220
SERIES
D
2
PAK
L7900
1
3
1
2
1/13
3

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L7900 Summary of contents

Page 1

... OUTPUT VOLTAGES OF -5; -5.2; -6; -8; -9; -12; -15; -18; -20; -22; -24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSITION SOA PROTECTION DESCRIPTION The L7900 series of three-terminal negative regulators is available in TO-220, ISOWATT220 2 TO-3 and D PAK packages and several fixed output voltages, making it useful in a wide range of applications ...

Page 2

... L7900 ABSOLUTE MAXIMUM RATINGS Symbol V DC Input Voltage (for 18V (for V = 20, 24V Output Current o P Power Dissipation tot T Operating Junction Temperature Range op T Storage Temperature Range st g THERMAL DATA Symbol Parameter R Thermal Resistance Junction-case thj Thermal Resistance Junction-ambient ...

Page 3

... B = 10Hz to 100KHz 120 100 due to heating effects must be taken into account o L7900 150 C, j Min. Typ. Max. Unit -4.8 -5 -5.2 V -4.75 -5 -5.25 V 100 100 0 ...

Page 4

... L7900 ELECTRICAL CHARACTERISTICS FOR L7906C (refer to the test circuits -11V 500 mA 2 Symbol Parameter V Output Voltage o V Output Voltage Line Regulation Load Regulation o I Quiescent Current d I Quiescent Current Change d I Quiescent Current Change d V Output Voltage Drift ...

Page 5

... B = 10Hz to 100KHz 120 100 due to heating effects must be taken into account o L7900 150 C, j Min. Typ. Max. Unit -11.5 -12 -12.5 V -11.4 -12 -12.6 V 240 mV 120 mV 240 mV 120 0.5 mA ...

Page 6

... L7900 ELECTRICAL CHARACTERISTICS FOR L7918C (refer to the test circuits -27V 500 mA 2 Symbol Parameter V Output Voltage o V Output Voltage Line Regulation Load Regulation o I Quiescent Current d I Quiescent Current Change d I Quiescent Current Change d V Output Voltage Drift ...

Page 7

... B = 10Hz to 100KHz 120 100 due to heating effects must be taken into account o L7900 150 C, j Min. Typ. Max. Unit -21.1 -22 -22.9 V -20.9 -22 -23.1 V 440 mV 220 mV 440 mV 220 0.5 mA ...

Page 8

... L7900 APPLICATION INFORMATION Figure 1 : Fixed Output Regulator. Notes : 1. To specify an output voltage, substitute voltage value for ”XX”. 2. Required for stability. For value given, capacitor must be solid tantalum. If aluminium electrolitics are used, at least ten times value should be selected required if regulator is located an 1 appreciable distance from power supply filter ...

Page 9

... TO-3 (R) MECHANICAL DATA mm DIM. MIN. TYP. A 11 10 30. inch MAX. MIN. TYP. 0.460 1.10 0.037 1.70 8.7 20.0 0.429 0.665 26.2 4.09 0.152 39.50 1.185 A R L7900 MAX. 0.043 0.066 0.342 0.787 1.031 0.161 1.555 D C P003N 9/13 ...

Page 10

... L7900 TO-220 MECHANICAL DATA DIM. MIN. TYP 2.4 D1 1.2 E 0.35 F 0.61 F2 1.15 G 4.95 5. 10.05 L2 16.2 L3 26.3 26.7 L5 2 Dia. 3.65 10/13 mm MAX. MIN. 4.8 1.37 2.8 0.094 1.35 0.047 0.55 0.014 0.94 0.024 1.4 0.045 5.21 0.195 10.4 10.4 0.396 27.1 1.035 3 0.102 15.8 0.594 6.6 0.236 3.85 0.144 inch TYP. MAX. 0.189 0.054 0.110 0.053 0.022 0.037 0.055 0.200 ...

Page 11

... MAX. MIN. 4.6 0.173 2.7 0.098 2.75 0.098 0.7 0.015 1 0.030 1.7 0.045 1.7 0.045 5.2 0.195 2.7 0.094 10.4 0.393 30.6 1.126 10.6 0.385 16.4 0.626 9.3 0.354 3.2 0.118 L7900 inch TYP. MAX. 0.181 0.106 0.108 0.027 0.039 0.067 0.067 0.204 0.106 0.409 0.630 1.204 0.417 0.645 0.366 0.126 P011G 11/13 ...

Page 12

... L7900 TO-263 (D mm DIM. MIN. TYP. A 4.4 A1 2.49 B 0.7 B2 1.14 C 0.45 C2 1. 1. DETAIL”A” 12/13 2 PAK) MECHANICAL DATA MAX. MIN. 4.6 0.173 2.69 0.098 0.93 0.027 1.7 0.044 0.6 0.017 1.36 0.048 9.35 0.352 10.4 0.393 5.28 0.192 15.85 0.590 1.4 0.050 1.75 0.055 D C DETAIL”A” ...

Page 13

... The ST logo is a registered trademark of STMicroelectronics 1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com . L7900 13/13 ...

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