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Details, datasheet, quote on part number:LM79M05CH
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| Part: | LM79M05CH |
| Category: | Power Management => Regulators => Linear Voltage Regulators => Negative => Fixed |
| Description: | LM79M05 - 3-Terminal Negative Regulators, Package: to 220, Pin Nb=3 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM79M05CH datasheet File size : 217 kB |
| Request For quote: | Find where to buy LM79M05CH
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Datasheet text preview:
LM79MXX Series 3-Terminal Negative Regulators
September 2001
LM79MXX Series 3-Terminal Negative Regulators
General Description
The LM79MXX series of 3-terminal regulators is available with fixed output voltages of -5V, -12V, and -15V. These devices need only one external component -- a compensation capacitor at the output. The LM79MXX series is packaged in the TO-220 power package, and is capable of supplying 0.5A of output current. These regulators employ internal current limiting, safe area protection, and thermal shutdown for protection against virtually all overload conditions. Low ground pin current of the LM79MXX series allows output voltage to be easily boosted above the preset value with a resistor divider. The low quiescent current of these devices with a specified maximum change with line and load ensures good regulation in the voltage boosted mode. For output voltage other than -5V, -12V, and -15V the LM137 series provides an output voltage range from -1.2V to -57V.
Features
n n n n Thermal, short circuit and safe area protection High ripple rejection 0.5A output current 4% tolerance on preset output voltage
Connection Diagram
TO-220 Plastic Package (T)
DS010483-7
Front View Order Number LM79M05CT, LM79M12CT or LM79M15CT See NS Package Number T03B
© 2001 National Semiconductor Corporation
DS010483
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LM79MXX Series
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage VO = -5V VO = -12V, -15V Input/Output Differential VO = -5V VO = -12V, -15V -25V -35V 25V 30V Power Dissipation (Note 2) Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec.) ESD Susceptibility Internally Limited 0°C to +125°C -65°C to +150°C 230°C TBD
Electrical Characteristics LM79M05C
Conditions unless otherwise noted: IOUT = 350mA, CIN = 2.2µF, COUT = 1µF, 0°C TJ +125°C Part Number Output Voltage Input Voltage (Unless Otherwise Specified) Symbol VO Parameter Output Voltage Conditions TJ = 25°C 5mA IOUT 350mA VO Line Regulation TJ = 25°C (Note 3) Min -4.8 -4.75 (-25 VIN -7) 8 (-25 VIN -7) 2 (-18 VIN - 8) VO IQ IQ Load Regulation Quiescent Current Quiescent Current Change With Load, 5mA IOUT 350mA Vn Output Noise Voltage Ripple Rejection Dropout Voltage IOMAX Peak Output Current Average Temperature Coefficient of Output Voltage TA = 25°C, 10Hz f 100Hz f = 120Hz TJ = 25°C, IOUT = 0.5A TJ = 25°C IOUT = 5mA, 0°C TJ 100°C -0.4 mV/°C 54 66 (-18 VIN -8) 1.1 800 V mA dB 150 0.4 mA µV TJ = 25°C, (Note 3) 5mA IOUT 0.5A TJ = 25°C With Input Voltage (-25 VIN -8) 1 2 0.4 mA mA 30 100 mV 30 mV 50 mV LM79M05C -5V -10V Typ -5.0 Max -5.2 -5.25 V V Units
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LM79MXX Series
Electrical Characteristics LM79M12C, LM79M15C
Conditions unless otherwise noted: IOUT = 350mA, CIN = 2.2µF, COUT = 1 µF, 0°C TJ +125°C Part Number Output Voltage Input Voltage (Unless Otherwise Specified) Symbol VO Parameter Output Voltage Conditions TJ = 25°C 5 mA IOUT 350mA VO Line Regulation TJ = 25°C (Note 3) Min -11.5 -11.4 5 3 (-25 VIN - 15) VO IQ IQ Load Regulation Quiescent Current Quiescent Current Change With Load, 5mA IOUT 350mA Vn Output Noise Voltage Ripple Rejection Dropout Voltage IOMAX Peak Output Current Coefficient of Output Voltage
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. Note 2: Refer to Typical Performance Characteristics and Design Considerations for details. Note 3: Regulation is measued at a constant junction temperature by pulse testing with a low duty cycle. Changes in output voltage due to heating effects must be taken into account.
LM79M12C -12V -19V Typ -12.0 Max -12.5 -12.6 80 50 240 3 0.4 (-30 VIN -14.5) 0.4 400 54 70 (-25 VIN -15) TJ = 25°C, IOUT = 0.5A TJ = 25°C 1.1 800 54 Min -14.4 -14.25
LM79M15C -15V -23V Typ -15.0 Max -15.6 -15.75 5 3 (-28 VIN -18) 30 1.5 (-30 VIN -27) 0.4 400 70 1.1 800 mA µV dB V mA 240 3 0.4 mV mA mA 80 50 V V mV mV Units
(-27 VIN -14.5) (-30 VIN -14.5)
(-30 VIN -10.5) (-30 VIN -17.5)
TJ = 25°C, (Note 3) 5mA IOUT 0.5A TJ = 25°C With Input Voltage
30 1.5
TA = 25°C, 10Hz f 100Hz f = 120Hz
(-30 VIN -17.5)
Average Temperature IOUT = 5mA, 0°C TJ 100°C -0.8 -1.0 mV/°C
Typical Performance Characteristics
Output Voltage vs. Temperature Ripple Rejection
DS010483-11
DS010483-12
3
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