LM7915CT

LM79XX_09 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

• Output Current in Excess of 1A
• Output V oltages of -5, -6, -8 , -9, -10, -12, -15, -18 and - 24V
• Internal Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Compensation

Description

The LM79XX series of three te rminal negative regulators are available in TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. TO-220 1. GND 2. Input 3. Output Vin Internal Block Digram VOLTAGE REFERENCE PROTECTION CIRCUITRY Rsc GND I1 I2 Out In Output Input LM79XX 3-Terminal 1A Negative Voltage Regulator

Note: 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow (VI = -10V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note 3. 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 is used. Parameter Symbol Value Unit Input Voltage V I -35 V Thermal Resistance Junction-Case (Note1) R θJC 5 °C/W Thermal Resistance Junction-Air (Note1, 2) R θJA 65 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 VIO = 5mA to 1A, PO ≤ 15W Line Regulation (Note3) ΔVO TJ = +25°C VI = -7V to -25V - 35 100 mV VI = -8V to -12V - 8 50 Load Regulation (Note3) ΔVO TJ = +25°C IO = 5mA to 1.5A -1 0 1 0 0 mV TJ =+25°C IO = 250mA to 750mA -3 5 0 Quiescent Current I Q TJ =+25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -8V to -25V - 0.1 0.8 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - - 0.4 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA =+25°C -4 0 - μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2 - V Short Circuit Current I SC TJ =+25°C, VI = -35V - 300 - mA Peak Current I PK TJ =+25°C- 2 . 2 - A

(VI = -11V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, PO ≤ 15W Line Regulation (Note1) ΔVO TJ = +25°C VI = -8V to -25V - 10 120 mV VI = -9V to -13V - 5 60 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A - 10 120 mV TJ =+25°C IO = 250mA to 750mA -3 6 0 Quiescent Current I Q TJ =+25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -8V to -25V - 0.1 1.3 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - -0.5 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA =+25°C -1 3 0- μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

(VI = -14V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, PO ≤ 15W Line Regulation (Note1) ΔVO TJ = +25°C VI = -10.5V to -25V - 10 160 mV VI = -11V to -17V - 5 80 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A -1 2 1 6 0 mV TJ =+25°C IO = 250mA to 750mA -4 8 0 Quiescent Current I Q TJ =+25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -10.5V to -25V - 0.1 1 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - -0.6 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA =+25°C -1 7 5- μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

(VI = -15V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note: 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, PO ≤ 15W Line Regulation (Note1) ΔVO TJ = +25°C VI = -11.5V to -26V - 10 180 mV VI = -12V to -18V - 5 90 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A - 12 180 mV TJ = +25°C IO = 250mA to 750mA -4 9 0 Quiescent Current I Q TJ = +25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -11.5V to -26V - 0.1 1 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - -0.6 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA = +25°C -1 7 5- μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

(VI = -17V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note: 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, Pd ≤ 15W Line Regulation (Note1) ΔVO TJ = +25°C VI = -12.5V to -28V - 12 200 mV VI = -14V to -20V - 6 100 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A -1 2 2 0 0 mV TJ = +25°C IO = 250mA to 750mA -4 1 0 0 Quiescent Current I Q TJ = +25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -12.5V to -28V - 0.1 1 Temperature Coefficient of VO ΔVo/ΔTI O = 5mA - -1 - mV/ °C Output Noise Voltage V N 10Hz ≤ f ≤ 100kHz TA =+25°C -2 8 0- μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

(VI = -19V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note: 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, PO ≤ 15W Line Regulation (Note1) ΔVO TJ = +25°C VI = -14.5V to -30V - 12 240 mV VI = -16V to -22V - 6 120 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A -1 2 2 4 0 mV TJ = +25°C IO = 250mA to 750mA -4 1 2 0 Quiescent Current I Q TJ = +25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -14.5V to -30V - 0.1 1 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - -0.8 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA = +25°C -2 0 0- μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

(VI = -23V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note: 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, PO ≤ 15W VI = -18V to -30V -14.25 -15 -15.75 Line Regulation (Note1) ΔVO TJ = +25°C VI = -17.5V to -30V - 12 300 mV VI = -20V to -26V - 6 150 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A -1 2 3 0 0 mV TJ = +25°C IO = 250mA to 750mA -4 1 5 0 Quiescent Current I Q TJ = +25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -17.5V to -30V - 0.1 1 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - -0.9 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA =+25°C - 250 - μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

(VI = -27V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note: 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, PO ≤ 15W Line Regulation (Note1) ΔVO TJ = +25°C VI = -21V to -33V - 15 360 mV VI = -24V to -30V - 8 180 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A -1 5 3 6 0 mV TJ = +25°C IO = 250mA to 750mA -5 1 8 0 Quiescent Current I Q TJ = +25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -21V to -33V - 0.1 1 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - -1 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA = +25°C -3 0 0- μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

(VI = -33V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.) Note: 1. 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 is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage V O VIO = 5mA to 1A, PO ≤ 15W VI = -27V to -38V -22.8 -24 -25.2 Line Regulation (Note1) ΔVO TJ = +25°C VI = -27V to -38V - 15 480 mV VI = -30V to -36V - 8 180 Load Regulation (Note1) ΔVO TJ = +25°C IO = 5mA to 1.5A -1 5 4 8 0 mV TJ = +25°C IO = 250mA to 750mA -5 2 4 0 Quiescent Current I Q TJ = +25°C- 3 6 m A Quiescent Current Change ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -27V to -38V - 0.1 1 Temperature Coefficient of VD ΔVo/ΔTI O = 5mA - -1 - mV/ °C Output Noise Voltage V N f = 10Hz to 100kHz TA = +25°C -4 0 0- μV Ripple Rejection RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage V D TJ = +25°C IO = 1A -2- V Short Circuit Current I SC TJ = +25°C, VI = -35V - 300 - mA Peak Current I PK TJ = +25°C- 2 . 2 - A

TO-220 [ SINGLE GAUGE ]

Ordering Information

Product Number Output Voltage Tolerance Package Operating Temperature LM7905CT LM7906CT LM7908CT LM7909CT LM7910CT LM7912CT LM7915CT LM7918CT LM7924CT

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