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PDF L7952ACD2T Datasheet ( Hoja de datos )

Número de pieza L7952ACD2T
Descripción 2% NEGATIVE VOLTAGE REGULATORS
Fabricantes STMicroelectronics 
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L7952ACD2T Hoja de datos, Descripción, Manual
L7900AC
® SERIES
2% NEGATIVE VOLTAGE REGULATORS
s OUTPUT CURRENT UP TO 1.5 A
s OUTPUT VOLTAGES OF -5; -5.2; -6; -8; -12;
-15; -18; -20; -22; -24V
s THERMAL OVERLOAD PROTECTION
s SHORT CIRCUIT PROTECTION
s OUTPUT TRANSITION SOA PROTECTION
DESCRIPTION
The L7900AC series of three-terminal negative
regulators is available in TO-220 and D2PAK
packages and several fixed output voltages.
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 L7800A positive standard series, they are
particularly suited for split power supplies. In
addition, the -5.2V is also available for ECL
system. If adequate heat sinking is provided,
they can deliver over 1.5A output current.
Although designed primarily as fixed voltage
regulators, these devices can be used with
external components to obtain adjustable
voltages and currents.
SCHEMATIC DIAGRAM
3
1
D2PAK
TO-220
November 1999
1/11

1 page

L7952ACD2T pdf
L7900AC
ELECTRICAL CHARACTERISTICS FOR L7912A (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -19V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Vo Output Voltage
Tj = 25 oC
-11.75 -12 -12.25
Vo Output Voltage
Vo* Line Regulation
Vo* Load Regulation
Id Quiescent Current
Io = -5 mA to -1 A Po 15 W
Vi = -15.5 to -27 V
Vi = -14.5 to -30 V Tj = 25 oC
Vi = -16 to -22 V Tj = 25 oC
Io = 5 to 1500 mA Tj = 25 oC
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
-11.5 -12 -12.5
2 40
1 20
2 40
1 20
3
Id Quiescent Current Change Io = 5 to 1000 mA
0.5
Id Quiescent Current Change Vi = -15 to -25 V
1
Vo Output Voltage Drift
T
Io = 5 mA
-0.8
eN Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
200
SVR Supply Voltage Rejection
Vd Dropout Voltage
Vi = 10 V f = 120 Hz
Io = 1 A
Tj = 25 oC
VO = 100 mV
54 60
1.1
Is c Short Circuit Current
Iscp Short Circuit Peak Current
Tj = 25 oC
1.5
2.5
Unit
V
V
mV
mV
mV
mV
mA
mA
mA
m V/ oC
µV
dB
V
A
A
ELECTRICAL CHARACTERISTICS FOR L7915A (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -23V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Vo Output Voltage
Tj = 25 oC
-14.7 -15 -15.3
Vo Output Voltage
Vo* Line Regulation
Vo* Load Regulation
Id Quiescent Current
Io = -5 mA to -1 A Po 15 W
Vi = -18.5 to -30 V
Vi = -17.5 to -30 V Tj = 25 oC
Vi = -20 to -26 V Tj = 25 oC
Io = 5 to 1500 mA Tj = 25 oC
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
-14.4 -15 -15.6
3 00
1 50
3 00
1 50
3
Id Quiescent Current Change Io = 5 to 1000 mA
0.5
Id Quiescent Current Change Vi = -18.5 to -30 V
1
Vo Output Voltage Drift
T
Io = 5 mA
-0.9
eN Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
250
SVR Supply Voltage Rejection
Vd Dropout Voltage
Vi = 10 V f = 120 Hz
Io = 1 A
Tj = 25 oC
VO = 100 mV
54 60
1.1
Is c Short Circuit Current
Iscp Short Circuit Peak Current
Tj = 25 oC
1.3
2.3
Unit
V
V
mV
mV
mV
mV
mA
mA
mA
m V/ oC
µV
dB
V
A
A
* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
5/11

5 Page

L7952ACD2T arduino
L7900AC
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems withoutexpress written approval of STMicroelectronics.
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
.
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