L7924AC ,+ 2% NEGATIVE VOLTAGE REGULATORSElectrical Characteristics Of L7908A (refer to the test circuits, T = 0 to 125°C, V = -14V,J I I = ..
L7924CV ,NEGATIVE VOLTAGE REGULATORSL7900SERIESNEGATIVE VOLTAGE REGULATORS■ OUTPUT CURRENT UP TO 1.5A■ OUTPUT VOLTAGES OF -5; -5.2; -6; ..
L7952CV ,NEGATIVE VOLTAGE REGULATORSELECTRICAL CHARACTERISTICS OF L7952C (refer to the test circuits, T = 0 to 125°C, V = -10V,J II =50 ..
L7952CV. ,NEGATIVE VOLTAGE REGULATORSL7900SERIESNEGATIVE VOLTAGE REGULATORS■ OUTPUT CURRENT UP TO 1.5A■ OUTPUT VOLTAGES OF -5; -5.2; -6; ..
L7980 ,2 A step-down switching regulatorFeaturesDescription 2 A DC output current 4.5 V to 28 V input voltageThe L7980 device is a step-d ..
L7980ATR ,2 A step-down switching regulatorFunctional description . . . . . . . 85.1 Oscillator and synchronization . . 95.2 Soft-sta ..
LC6527F ,Single Chip 4-Bit Microcontroller for Small-Scale Control-Oriented ApplicationsFeatures1) CMOS technology for a low-power operation (with instruction-controlled standby function) ..
LC6527H ,CMOS LSI SINGLE
LC6527H ,CMOS LSI SINGLE
LC6527H ,CMOS LSI SINGLE
LC6529N ,4-Bit Microcomputer for Small-Scale Control ApplicationsOrdering number : EN*5117CMOS LSILC6529N, LC6529F, LC6529L4-Bit Microcomputer for Small-Scale Contr ..
LC6538D ,SINGLE-CHIP 4-BIT MICROCOMPUTER FOR LARGE-SCALE CONTROL-ORIENTED APPLICATIONSFeaturesT . 78 instructions ,. On-chip 8192-byte ROM, 448x4-bit RAM (64x4 bits of the 448x4-bit RAM ..
L7924AC
+ 2% NEGATIVE VOLTAGE REGULATORS
1/13June 2004 OUTPUT CURRENT TO 1.5A OUTPUT VOLTAGES OF -5; -6; -8; -12; -15;
-18; -20; -24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSITION SOA PROTECTION
DESCRIPTION The L7900AC series of three-terminal negative
regulators is available in TO-220 and D2 PAK
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. 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.
L7900AC
SERIES2% NEGATIVE VOLTAGE REGULATORS
SCHEMATIC DIAGRAMRev. 7
L7900AC SERIES2/13
Table 1: Absolute Maximum Ratings Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Table 2: Thermal Data
Figure 1: Connection Diagram (top view)
Table 3: Ordering Codes (*) Available in Tape & Reel with the suffix "-TR".
(**) Available on Request.
L7900AC SERIES3/13
Figure 2: Application Circuits
Table 4: Electrical Characteristics Of L7905A (refer to the test circuits, TJ = 0 to 125°C, VI = -10V,O = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
L7900AC SERIES4/13
Table 5: Electrical Characteristics Of L7906A (refer to the test circuits, TJ = 0 to 125°C, VI = -11V,O = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
Table 6: Electrical Characteristics Of L7908A (refer to the test circuits, TJ = 0 to 125°C, VI = -14V,O = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
L7900AC SERIES5/13
Table 7: Electrical Characteristics Of L7912A (refer to the test circuits, TJ = 0 to 125°C, VI = -19V,O = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
Table 8: Electrical Characteristics Of L7915A (refer to the test circuits, TJ = 0 to 125°C, VI = -23V,IO = 500 mA, CI = 2.2 µF, C O = 1 µF unless otherwise specified).
(*) 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.
L7900AC SERIES6/13
Table 9: Electrical Characteristics Of L7918A (refer to the test circuits, TJ = 0 to 125°C, VI = -27V,O = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
Table 10: electrical characteristics of L7920A (refer to the test circuits, TJ = 0 to 125°C, VI = -29V,O = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
L7900AC SERIES7/13
Table 11: Electrical Characteristics Of L7924A (refer to the test circuits, TJ = 0 to 125°C, VI = -33V,O = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).
(*) 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.
APPLICATIONS INFORMATION
Figure 3: Fixed Output Regulator NOTE:
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 electrolytics are used, at least ten times value should
be selected. C1 is required if regulator is located an appreciable distance from power supply filter.
3. To improve transient response. If large capacitors are used, a high current diode from input to output (1N4001 or similar) should be intro-
duced to protect the device from momentary input short circuit.
