MC79LXXA FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • Output Current up to 100mA
  • No External Components
  • Internal Thermal Over Load Protection
  • Internal Short Circuit Current Limiting
  • Output V oltage Offered in ±5% Tolerance
  • Output V oltage of -5V , -8V , -12V , -15V , -18V , -24V

Description

These regulators employ internal current limiting and thermal shutdown, making them essentially indestructible. TO-92 8-SOP SOT-89 1.GND 2.Input 3.Output Internal Block Diagram Q2Q3 Q6 Q7 Q8Q9 Q10 Q11 Q12 Q13Q14 Q15 Q16 Q17 R2 R3 R4 R5 R15 R16 R17 R18 R26 R22 R24 R25 R29 R R28 R23+R21 R27 D3 D2 GND Output Input MC79LXXA/LM79LXXA 3-Terminal 0.1A Negative Voltage Regulator

(VI = -10V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Note: 1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Value Unit Input Voltage (for Vo = -5V to -8V) (for VO = -12V to -18V) (for VO = -24V) VI -30 -35 -40 V Operating Temperature Range T OPR 0 ~ +125 °C Storage Temperature Range T STG -65 ~ +150 °C Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O TJ = +25°C -4.8 -5.0 -5.2 V Line Regulation (Note1) ∆VO TJ =+25°C -7.0V ≥ VI ≥ -20V - 15 150 mV -8V ≥ VI ≥ -20V - - 100 mV Load Regulation (Note1) ∆VO TJ =+25°C 1.0mA ≤ IO ≤ 100mA - 20 60 mV 1.0mA ≤ IO ≤ 40mA - 10 30 mV Output Voltage V O VI = -10V, 1.0mA ≤ IO ≤ 70mA -4.75 - -5.25 V Quiescent Current I Q TJ =+25°C- 2 . 0 5 . 5 mA Quiescent Current Change With Line ∆IQ -8V ≥ VI ≥ -20V - - 1.5 mA With Load ∆IQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA Output Noise Voltage V N TA = +25°C,10Hz ≤ f ≤ 100kHz - 30 - µV Ripple Rejection RR f = 120Hz, -8V ≥ VI ≥ -18V TJ = +25°C 41 60 - dB Dropout Voltage V D TJ = +25°C- 1 . 7 - V

(VI = -14V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Note: 1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O TJ = +25°C -7.7 -8.0 -8.3 V Line Regulation(Note1) ∆VO TJ = +25°C -10.3V ≥ VI ≥ -23V - - 175 mV -12V ≥ VI ≥ -23V - - 125 mV Load Regulation (Note1) ∆VO TJ = +25°C 1.0mA ≤ Io ≤ 100mA - - 80 mV 1.0mA ≤ Io ≤ 40mA - - 40 mV Output Voltage V O Quiescent Current I q Quiescent Current Change With Line ∆IQ With Load 1.0mA ≤ Io ≤ 40mA - - 0.1 mA Output Noise Voltage V N Tj = +25°C,10Hz ≤ f ≤ 100kHz - 50 - µV Ripple Rejection RR f = 120Hz, -11V ≥ VI ≥ -21V Tj = +25°C 39 55 - dB Dropout Voltage V D Tj = +25°C- 1 . 7 - V

(VI = -19V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Note: 1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O TJ = +25°C -11.5 -12.0 -12.5 V Line Regulation (Note1) ∆VO TJ = +25°C -14.5V ≥ VI ≥ -27V - - 250 mV -16V ≥ VI ≥ -27V - - 200 mV Load Regulation (Note1) ∆VO TJ = +25°C 1.0mA ≤ IO ≤ 100mA - - 100 mV 1.0mA ≤ IO ≤ 40mA - - 50 mV Output Voltage V O VI = -19V, 1.0mA ≤ IO ≤ 70mA -11.4 - -12.6 V Quiescent Current I Q Quiescent Current Change With Line ∆IQ -16V ≥ VI ≥ -27V - - 1.5 mA With Load ∆IQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA Output Noise Voltage V N TA = +25°C,10Hz ≤ f ≤ 100kHz - 80 - µV Ripple Rejection RR f = 120Hz, -15V≥ VI ≥ -25V TJ = +25°C 37 42 - dB Dropout Voltage V D TJ = +25°C- 1 . 7 - V

(VI = -23V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Note: 1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O TJ = +25°C -14.4 -15.0 -15.6 V Line Regulation (Note1) ∆VO TJ = +25°C -17.5V ≥ VI ≥ -30V - - 300 mV -20V ≥ VI ≥ -30V - - 250 mV Load Regulation (Note1) ∆VO TJ = +25°C 1.0mA ≤ IO ≤ 100mA - - 150 mV 1.0mA ≤ IO ≤ 40mA - - 75 mV Output Voltage V O VI = -23V, 1.0mA ≤ IO ≤ 70mA -14.25 - -15.75 V Quiescent Current I Q Quiescent Current Change With Line ∆IQ -20V ≥ VI ≥ -30V - - 1.5 mA With Load ∆IQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA Output Noise Voltage V N TA = +25°C,10Hz ≤ f ≤ 100kHz - 90 - µV Ripple Rejection RR f = 120Hz, -18.5V ≥ VI ≥ -28.5V TJ = +25°C 34 39 - dB Dropout Voltage V D TJ = +25°C- 1 . 7 - V

(VI = -27V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Note: 1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O TJ = +25°C -17.3 -18.0 -18.7 V Line Regulation (Note1) ∆VO TJ = +25°C -20.7V ≥ VI ≥ -33V - - 325 mV -21V ≥ VI ≥ -33V - - 275 mV Load Regulation (Note1) ∆VO TJ = +25°C 1.0mA ≤ IO ≤ 100mA - - 170 mV 1.0mA ≤ IO ≤ 40mA - - 85 mV Output Voltage V O VI = -27V, 1.0mA ≤ IO ≤ 70mA -17.1 - -18.9 V Quiescent Current I Q Quiescent Current Change With Line ∆IQ -21V ≥ VI ≥ -33V - - 1.5 mA With Load ∆IQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA Output Noise Voltage V N TA =+25°C,10Hz ≤ f ≤ 100kHz - 150 - µV Ripple Rejection RR f = 120Hz, -23V ≥ VI ≥ -33V TJ = +25°C 33 48 - dB Dropout Voltage V D TJ = +25°C- 1 . 7 - V

(VI = -33V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Note: 1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O TJ = +25°C -23 -24 -25 V Line Regulation (Note1) ∆VO TJ = +25°C -27V ≥ VI ≥ -38V - - 350 mV -28V ≥ VI ≥ -38V - - 300 mV Load Regulation (Note1) ∆VO TJ = +25°C 1.0mA ≤ IO ≤ 100mA - - 200 mV 1.0mA ≤ IO ≤ 40mA - - 100 mV Output Voltage V O VI = -33V, 1.0mA ≤ IO ≤ 70mA -22.8 - -25.2 V Quiescent Current I Q Quiescent Current Change With Line ∆IQ -28V ≥ VI ≥ -38V - - 1.5 mA With Load ∆IQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA Output Noise Voltage V N TA = +25°C,10Hz ≤ f ≤ 100kHz - 200 - µV Ripple Rejection RR f = 120Hz, -29V ≥ VI ≥ -35V TJ = +25°C 31 47 - dB Dropout Voltage V D TJ = +25°C- 1 . 7 - V

the output voltage even during the low point on the input ripple voltage.

  • C1 is required if regulator is located an appreciable distance from power supply filter.
  • CO improves stability and transient response.

Figure 1. Positive And Negative Regulator Figure 2. Typical Application

0.46 ±0.10 1.27TYP (R2.29) 3.86MAX [1.27 ±0.20] 1.27TYP [1.27 ±0.20] 3.60 ±0.20 14.47 ±0.40 1.02 ±0.10 (0.25) 4.58 ±0.20 4.58+0.25 –0.15 0.38+0.10 –0.05 0.38+0.10 –0.05 TO-92

Mechanical Dimensions (Continued) Package Dimensions in millimeters 4.92 ±0.20 0.194 ±0.008 0.41 ±0.10 0.016 ±0.004 1.27 0.050 5.72 0.225 1.55 ±0.20 0.061 ±0.008 0.1~0.25 0.004~0.001 6.00 ±0.30 0.236 ±0.012 3.95 ±0.20 0.156 ±0.008 0.50 ±0.20 0.020 ±0.008 5.13 0.202MAX #4 #5 0~8 0.56 0.022() 1.80 0.071 MAX0.10 MAX0.004 MAX MIN +0.10-0.05 0.15 +0.004-0.002 0.006 8-SOP

Mechanical Dimensions (Continued) Package Dimensions in millimeters SOT-89 0.40 ±0.10 2.50 ±0.20 (0.50) (0.40) 4.10 ±0.20 0.40 +0.10 –0.05 0.50 ±0.10 1.65 ±0.10 C0.2 1.50 TYP 1.50 TYP (1.10)

12/11/02 0.0m 001 Stock#DSxxxxxxxx  2002 Fairchild Semiconductor Corporation LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

Ordering Information

Product Number Package Operating Temperature LM79L05ACZ TO-92 0 ~ +125 °C Product Number Package Operating Temperature MC79L05ACP TO-92 0 ~ +125°C MC79L08ACP MC79L12ACP MC79L15ACP MC79L18ACP MC79L24ACP MC79L05ACD 8-SOPMC79L15ACD MC79L05ACH SOT-89