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L7900 SERIES
NEGATIVE VOLTAGE REGULATORS
s s

OUTPUT CURRENT UP TO 1.5A 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

s s s

DESCRIPTION The L7900 series of three-terminal negative regulators is available in TO-220, TO-220FP, TO-3 and D2PAK packages and several fixed outputvoltages, 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. If adequateheat 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
TO-220 TO-220FP

D2PAK

TO-3

February 2003

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L7900 SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol VI IO Ptot Tstg Top DC Input Voltage Output CurrentPower Dissipation Storage Temperature Range Operating Junction Temperature Range Parameter² for VO = 5 to 18V for VO = 20, 24V Value -35 -40 Internally Limited Internally Limited -65 to 150 0 to 150 °C °C Unit V

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

THERMAL DATA
Symbol Rthj-caseRthj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Max D2PAK 3 62.5 TO-220 3 50 TO-220FP 5 60 TO-3 4 35 Unit °C/W °C/W

CONNECTION DIAGRAM (top view)

TO-220

TO-220FP

D2PAK

TO-3

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L7900 SERIES
ORDERING CODES
TYPE L7905C L7952C L7906C L7908C L7912C L7915C L7918C L7920C L7922C L7924C TO-220 L7905CV L7952CV L7906CV L7908CV L7912CV L7915CVL7918CV L7920CV L7922CV L7924CV D2PAK (*) L7905ACD2T L7952ACD2T L7906ACD2T L7908ACD2T L7912ACD2T L7915ACD2T L7918ACD2T L7920ACD2T L7922ACD2T L7924ACD2T TO-220FP L7905CP L7906CP L7908CP L7912CP L7915CP L7918CP L7920CP L7924CP TO-3 L7905CT L7952CT L7906CT L7908CT L7912CT L7915CT L7918CT L7920CT L7922CT L7924CT OUTPUT VOLTAGE -5 V -5.2 V -6 V -8 V -12 V -15 V -18 V -20 V -22 V -24 V

(*) Available inTape & Reel with the suffix "-TR".

TEST CIRCUIT

ELECTRICAL CHARACTERISTICS OF L7905C (refer to the test circuits, TJ = 0 to 125°C, VI = -10V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
Symbol VO VO ∆VO(*) ∆VO(*) Id ∆Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25°C IO = -5 mA to -1 A PO ≤ 15W VI = 8 to 20 V VI = -7 to -25 V VI = -8 to -12 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25°C IO = 5 mA to 1 A VI = -8 to -25 V ∆VO/∆T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz ∆VI = 10 V IO = 1 A f = 120Hz TJ = 25°C ∆VO = 100 mV TJ = 25°C 54 -0.4 100 60 1.4 2.1 TJ = 25°C TJ = 25°C TJ =25°C TJ = 25°C Test Conditions Min. -4.8 -4.75 Typ. -5 -5 Max. -5.2 -5.25 100 50 100 50 3 0.5 1.3 mV/°C µV dB V A mA mA mV Unit V V mV

(*) 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.

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L7900 SERIES
ELECTRICAL CHARACTERISTICS OF L7952C(refer to the test circuits, TJ = 0 to 125°C, VI = -10V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
Symbol VO VO ∆VO(*) ∆VO(*) Id ∆Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25°C IO = -5 mA to -1 A PO ≤ 15 W VI = -9 to -21 V VI = -8 to -25 V VI = -9 to -12 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ...