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Details, datasheet, quote on part number:LM79L12A
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| Part: | LM79L12A |
| Category: | Power Management => Regulators => Linear Voltage Regulators => Negative => Fixed |
| Description: | LM79L12 - Series 3-Terminal Negative Regulators, Package: Soic Narrow, Pin Nb=8 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM79L12A datasheet File size : 215 kB |
| Request For quote: | Find where to buy LM79L12A
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Datasheet text preview:
LM320L/LM79LXXAC/LM13121 Series 3-Terminal Negative Regulators
January 2003
LM320L/LM79LXXAC/LM13121 Series 3-Terminal Negative Regulators
General Description
The LM320L/LM79LXXAC/LM13121 dual marked series of 3-terminal negative voltage regulators features fixed output voltages of -5V, -12V, and -15V with output current capabilities in excess of 100mA. These devices were designed using the latest computer techniques for optimizing the packaged IC thermal/electrical performance. The LM79LXXAC series, even when combined with a minimum output compensation capacitor of 0.1µF, exhibits an excellent transient response, a maximum line regulation of 0.07% VO/V, and a maximum load regulation of 0.01% VO/mA. The LM320L/LM79LXXAC/LM13121 series also includes, as self-protection circuitry: safe operating area circuitry for output transistor power dissipation limiting, a temperature independent short circuit current limit for peak output current limiting, and a thermal shutdown circuit to prevent excessive junction temperature. Although designed primarily as fixed voltage regulators, these devices may be combined with simple external circuitry for boosted and/or adjustable voltages and currents. The LM79LXXAC series is available in the 3-lead TO-92 package, 8-lead SOIC package, and the 6-Bump micro SMD package. The LM320L series is available in the 3-lead TO-92 package. For output voltage other than -5V, -12V and -15V, the LM137L series provides an output voltage range from 1.2V to 47V.
Features
n Preset output voltage error is less than ± 5% overload, line and temperature n Specified at an output current of 100mA n Easily compensated with a small 0.1µF output capacitor n Internal short-circuit, thermal and safe operating area protection n Easily adjustable to higher output voltages n Maximum line regulation less than 0.07% VOUT/V n Maximum load regulation less than 0.01% VOUT/mA n See AN-1112 for micro SMD considerations
Typical Applications
Fixed Output Regulator
Adjustable Output Regulator
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00774803
*Required if the regulator is located far from the power supply filter. A 1µF aluminum electrolytic may be substituted. **Required for stability. A 1µF aluminum electrolytic may be substituted.
-V0 = -5V - (5V/R1 + IQ) · R2, 5V/R1 > 3 IQ
Connection Diagrams
6-Bump micro SMD TO-92 Plastic Package (Z)
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Bottom View
00774820
Bump Side Down
© 2003 National Semiconductor Corporation
DS007748
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LM320L/LM79LXXAC/LM13121
Connection Diagrams
(Continued) SO-8 Plastic (Narrow Body)
00774804
Top View
Ordering Information
Package 8-Lead SOIC Part Number LM79L05ACM LM79L05ACMX LM79L13ACM LM79L13ACMX LM79L15ACM LM79L15ACMX 3-Pin TO-92 LM13121Z-5.0 LM13121Z-12 LM13121Z-15 6-Bump micro SMD LM79L05ACTL LM79L05ACTLX 320L79L05 320L79L12 320L79L15 XTPB LM79L15ACM LM79L12ACM Package Marking LM79L05ACM Transport Media 95 Units/Rail 2.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel 1800 Units Per Box 1800 Units Per Box 1800 Units Per Box 250 Units Tape and Reel 3k Units Tape and Reel TLA06AMA Z03A NSC Drawing M08A
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LM320L/LM79LXXAC/LM13121
Absolute Maximum Ratings
(Note 1)
Operating Temperature Range Maximum Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10 sec.)
0°C to +70°C +125°C -55°C to +150°C 260°C
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage VO = -5V, -12V, -15V Internal Power Dissipation (Note 2) -35V Internally Limited
Electrical Characteristics (Note 3)
TA = 0°C to +70°C unless otherwise noted. Output Voltage Input Voltage (unless otherwise noted) Symbol VO Parameter Output Voltage Conditions TJ = 25°C, IO = 100mA 1mA IO 100mA VMIN VIN VMAX 1mA IO 40mA VMIN VIN VMAX V O Line Regulation TJ = 25°C, IO = 100mA VMIN VIN VMAX TJ = 25°C, IO = 40mA VMIN VIN VMAX V O Load Regulation Long Term Stability Quiescent Current Quiescent Current Change TJ = 25°C 1mA IO 100mA VO IQ I Q IO = 100mA IO = 100mA 1mA IO 100mA 1mA IO 40mA IO = 100mA VMIN VIN VMAX Vn Output Noise TJ = 25°C, IO = 100mA Voltage f = 10Hz - 10kHz Ripple Rejection TJ = 25°C, IO = 100mA f = 120Hz -7.3 -7.0 -14.6 -14.5 -17.7 -17.5 V V IO = 40mA 50 52 50 dB 20 2 6 0.3 0.1 0.25 (-20 VIN -7.5) 40 48 2 6 0.3 0.1 0.25 (-27 VIN -14.8) 96 60 2 6 0.3 0.1 0.25 (-30 VIN -18) 120 mA mA V µV mV/khrs mA Min -5.2 -5.25 -5.25 -5V -10V Typ -5 Max -4.8 -4.75 -4.75 60 (-20 VIN -7.3) 60 (-20 VIN -7) 50 Min -12.5 -12.6 -12.6 -12V -17V Typ -12 Max -11.5 -11.4 -11.4 45 (-27 VIN -14.6) 45 (-27 VIN -14.5) 100 Min -15.6 -15.75 -15.75 -15V -20V Typ -15 Max -14.4 -14.25 V -14.25 45 (-30 VIN -17.7) 45 (-30 VIN -17.5) 125 mV V mV V mV Units
(-20 VIN -7.5) (-20 VIN -7)
(-27 VIN -14.8) (-27 VIN -14.5)
(-30 VIN -18) (-30 VIN -17.5)
Input Voltage TJ = 25°C, IO = 100mA Required to Maintain Line Regulation
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Note 2: Thermal resistance of Z package is 60°C/W JC, 232°C/W JA at still air, and 88°C/W at 400 ft/min of air. The M package JA is 180°C/W in still air. The maximum junction temperature shall not exceed 125°C on electrical parameters. Note 3: To ensure constant junction temperature, low duty cycle pulse testing is used.
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