L7900 series Negative voltage regulators Feature summary ■ Output current up to 1.5A ■ Output voltages of -5; -6; -8; -12; -15; -18; -20; -24V ■ Thermal overload protection ■ Short circuit protection ■ Output transition SOA protection TO-220 TO-220FP Description The L7900 series of three-terminal negative regulators is available in TO-220, TO-220FP, TO-3 and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications. 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 L7800 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. D2PAK TO-3 Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. Schematic diagram January 2007 Rev. 11 1/24 www.st.com 24 L7900 series Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Test circuit 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 Order code 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2/24 ................................................ 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 L7900 series Pin configuration 1 Pin configuration Figure 1. Pin connections (top view) TO-220 D2PAK (Any Type) TO220FP TO-3 3/24 Maximum ratings L7900 series 2 Maximum ratings Table 1. Absolute maximum ratings Symbol Parameter Value for VO= 5 to 18V -35 for VO= 20, 24V -40 Unit VI DC Input voltage IO Output current Internally Limited PD Power dissipation Internally Limited TSTG Storage temperature range TOP Operating junction temperature range V -65 to 150 °C 0 to 150 °C Note: 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 Symbol Parameter RthJC Thermal resistance junction-case RthJA Thermal resistance junction-ambient 4/24 D2PAK TO-220 TO-220FP TO-3 Unit 3 3 5 4 °C/W 62.5 50 60 35 °C/W L7900 series 3 Test circuit Figure 2. Test circuit Test circuit 5/24 Electrical characteristics L7900 series 4 Electrical characteristics Table 3. Electrical characteristics of L7905C (refer to the test circuits, TJ = 0 to 125°C, VI = -10V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -4.8 -5 -5.2 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -8 to -20 V -4.75 -5 -5.25 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change VI = -7 to -25 V, TJ = 25°C 100 VI = -8 to -12 V, TJ = 25°C 50 IO = 5 mA to 1.5 A, TJ = 25°C 100 IO = 250 to 750 mA, TJ = 25°C 50 TJ = 25°C 3 mV mV IO = 5 mA to 1 A 0.5 VI = -8 to -25 V 1.3 mA mA Output voltage drift IO = 5 mA -0.4 mV/°C Output noise voltage B = 10Hz to 100KHz, TJ = 25°C 100 µV Supply voltage rejection ∆VI = 10 V, f = 120Hz 60 dB Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV 1.4 V Isc Short circuit current 2.1 A eN SVR 54 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 cycle is used. 6/24 L7900 series Table 4. Symbol Electrical characteristics Electrical characteristics of L7906C (refer to the test circuits, TJ = 0 to 125°C, VI = -11V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -5.75 -6 -6.25 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -9.5 to -21.5 V -5.7 -6 -6.3 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change VI = -8.5 to -25 V, TJ = 25°C 120 VI = -9 to -15 V, TJ = 25°C 60 IO = 5 mA to 1.5 A, TJ = 25°C 120 IO = 250 to 750 mA, TJ = 25°C 60 TJ = 25°C 3 mV mV IO = 5 mA to 1 A 0.5 VI = -9.5 to -25 V 1.3 mA mA Output voltage drift IO = 5 mA -0.6 mV/°C Output noise voltage B = 10Hz to 100KHz, TJ = 25°C 144 µV Supply voltage rejection ∆VI = 10 V, f = 120Hz 60 dB Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV 1.4 V Isc Short circuit current 2 A eN SVR 54 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 cycle is used. Table 5. Symbol Electrical characteristics of L7908C (refer to the test circuits, TJ = 0 to 125°C, VI = -14V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -7.7 -8 -8.3 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -11.5 to -23 V -7.6 -8 -8.4 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change VI = -10.5 to -25 V, TJ = 25°C 160 VI = -11 to -17 V, TJ = 25°C 80 IO = 5 mA to 1.5 A, TJ = 25°C 160 IO = 250 to 750 mA, TJ = 25°C 80 TJ = 25°C 3 mV mV IO = 5 mA to 1 A mA 0.5 mA VI = -11.5 to -25 V 1 Output voltage drift IO = 5 mA -0.6 mV/°C Output noise voltage B = 10Hz to 100KHz, TJ = 25°C 175 µV Supply voltage rejection ∆VI = 10 V, f = 120Hz 60 dB Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV 1.1 V Isc Short circuit current 1.5 A eN SVR 54 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 cycle is used. 7/24 Electrical characteristics Table 6. Symbol L7900 series Electrical characteristics of L7912C (refer to the test circuits, TJ = 0 to 125°C, VI = -19V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -11.5 -12 -12.5 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -15.5 to -27 V -11.4 -12 -12.6 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change VI = -14.5 to -30 V, TJ = 25°C 240 VI = -16 to -22 V, TJ = 25°C 120 IO = 5 mA to 1.5 A, TJ = 25°C 240 IO = 250 to 750 mA, TJ = 25°C 120 mV mV TJ = 25°C 3 IO = 5 mA to 1 A 0.5 VI = -15 to -30 V 1 mA mA Output voltage drift IO = 5 mA -0.8 mV/°C Output noise voltage B = 10Hz to 100KHz, TJ = 25°C 200 µV Supply voltage rejection ∆VI = 10 V, f = 120Hz 60 dB Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV 1.1 V Isc Short circuit current 1.5 A eN SVR 54 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 cycle is used. Table 7. Symbol Electrical characteristics of L7915C (refer to the test circuits, TJ = 0 to 125°C, VI = -23V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -14.4 -15 -15.6 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -18.5 to -30 V -14.3 -15 -15.7 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change VI = -17.5 to -30 V, TJ = 25°C 300 VI = -20 to -26 V, TJ = 25°C 150 IO = 5 mA to 1.5 A, TJ = 25°C 300 IO = 250 to 750 mA, TJ = 25°C 150 mV mV TJ = 25°C 3 IO = 5 mA to 1 A mA 0.5 mA VI = -18.5 to -30 V 1 Output voltage drift IO = 5 mA -0.9 mV/°C Output noise voltage B = 10Hz to 100KHz, TJ = 25°C 250 µV Supply voltage rejection ∆VI = 10 V, f = 120Hz 60 dB Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV 1.1 V Isc Short circuit current 1.3 A eN SVR 54 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 cycle is used. 8/24 L7900 series Table 8. Symbol Electrical characteristics Electrical characteristics of L7918C (refer to the test circuits, TJ = 0 to 125°C, VI = -27V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -17.3 -18 -18.7 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -22 to -33 V -17.1 -18 -18.9 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change VI = -21 to -33 V, TJ = 25°C 360 VI = -24 to -30 V, TJ = 25°C 180 IO = 5 mA to 1.5 A, TJ = 25°C 360 IO = 250 to 750 mA, TJ = 25°C 180 3 IO = 5 mA to 1 A 0.5 VI = -22 to -33 V 1 IO = 5 mA Output noise voltage B = 10Hz to 100KHz, TJ = 25°C Supply voltage rejection ∆VI = 10 V, f = 120Hz Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV Isc Short circuit current SVR mV TJ = 25°C Output voltage drift eN mV mA mA 54 -1 mV/°C 300 µV 60 dB 1.1 V 1.1 A 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 cycle is used. Table 9. Symbol Electrical characteristics of L7920C (refer to the test circuits, TJ = 0 to 125°C, VI = -29V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Parameter Test conditions VO Output voltage TJ = 25°C VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -24 to -35 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change Min. Typ. Max. Unit -19.2 -20 -20.8 V -19 -20 -21 V VI = -23 to -35 V, TJ = 25°C 400 VI = -26 to -32 V, TJ = 25°C 200 IO = 5 mA to 1.5 A, TJ = 25°C 400 IO = 250 to 750 mA, TJ = 25°C 200 mV mV TJ = 25°C 3 IO = 5 mA to 1 A 0.5 VI = -24 to -35 V 1 mA mA Output voltage drift IO = 5 mA -1.1 mV/°C Output noise voltage B = 10Hz to 100KHz, TJ = 25°C 350 µV Supply voltage rejection ∆VI = 10 V, f = 120Hz 60 dB Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV 1.1 V Isc Short circuit current 0.9 A eN SVR 54 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 cycle is used. 9/24 Electrical characteristics Table 10. Symbol L7900 series Electrical characteristics of L7924C (refer to the test circuits, TJ = 0 to 125°C, VI = -33V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified) Parameter Test conditions VO Output voltage TJ = 25°C VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -27 to -38 V ∆VO(1) Line regulation ∆VO(1) Load regulation Id ∆Id ∆VO/∆T Quiescent current Quiescent current change Max. Unit -23 -24 -24.5 V -22.8 -24 -25.2 V 480 VI = -30 to -36 V, TJ = 25°C 240 IO = 5 mA to 1.5 A, TJ = 25°C 480 IO = 250 to 750 mA, TJ = 25°C 240 mV mV TJ = 25°C 3 IO = 5 mA to 1 A 0.5 VI = -27 to -38 V 1 IO = 5 mA Output noise voltage B = 10Hz to 100KHz, TJ = 25°C Supply voltage rejection ∆VI = 10 V, f = 120Hz Vd Dropout voltage IO = 1 A, TJ = 25°C, ∆VO = 100 mV Isc Short circuit current SVR Typ. VI = -27 to -38 V, TJ = 25°C Output voltage drift eN Min. mA mA 54 -1 mV/°C 400 µV 60 dB 1.1 V 1.1 A 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 cycle is used. 10/24 L7900 series 5 Application information Figure 3. Fixed output regulator Application information 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 introduced to protect the device from momentary input short circuit. Figure 4. Split power supply (± 15V - 1 A) (*) Against potential latch-up problems. 11/24 Application information Figure 5. Circuit for increasing output voltage VO=VXX(R1+R2)/R2 VXX/R2 > 3Id C3 Optional for improved transient response and ripple rejection. Figure 6. 12/24 High current negative regulator (-5V/4A with 5A current limiting) L7900 series L7900 series 6 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 13/24 Package mechanical data L7900 series TO-3 MECHANICAL DATA mm. DIM. MIN. A inch TYP MAX. MIN. TYP. 11.85 B 0.96 MAX. 0.466 1.05 1.10 0.037 0.041 0.043 C 1.70 0.066 D 8.7 0.342 E 20.0 0.787 G 10.9 0.429 N 16.9 0.665 P 26.2 R 3.88 1.031 4.09 U 0.152 39.5 V 1.555 30.10 1.185 A P D C O N B V E G U 0.161 R P003C/C 14/24 L7900 series Package mechanical data TO-220 (A TYPE) MECHANICAL DATA DIM. A mm. MIN. TYP inch MAX. MIN. TYP. MAX. 4.40 4.60 0.173 0.181 b 0.61 0.88 0.024 0.034 b1 1.15 1.70 0.045 0.067 c 0.49 0.70 0.019 0.027 D 15.25 15.75 0.600 0.620 E 10.0 10.40 0.393 0.409 e 2.4 2.7 0.094 0.106 e1 4.95 5.15 0.194 0.203 F 1.23 1.32 0.048 0.051 H1 6.2 6.6 0.244 0.260 J1 2.40 2.72 0.094 0.107 L 13.0 14.0 0.511 0.551 L1 3.5 3.93 0.137 0.154 L20 16.4 0.645 L30 28.9 1.138 φP 3.75 3.85 0.147 0.151 Q 2.65 2.95 0.104 0.116 0015988/N 15/24 Package mechanical data L7900 series TO-220FP MECHANICAL DATA DIM. mm. MIN. A 4.40 TYP inch MAX. MIN. TYP. MAX. 4.60 0.173 0.181 B 2.5 2.7 0.098 0.106 D 2.5 2.75 0.098 0.108 E 0.45 0.70 0.017 0.027 F 0.75 1 0.030 0.039 F1 1.15 1.50 0.045 0.059 F2 1.15 1.50 0.045 0.059 G 4.95 5.2 0.194 0.204 G1 2.4 2.7 0.094 0.106 H 10.0 10.40 0.393 0.409 L2 L3 16 0.630 28.6 30.6 1.126 1.204 L4 9.8 10.6 0.385 0.417 L5 2.9 3.6 0.114 0.142 L6 15.9 16.4 0.626 0.645 L7 9 9.3 0.354 0.366 DIA. 3 3.2 0.118 0.126 7012510A-H 16/24 L7900 series Figure 7. Package mechanical data DRAWING DIMENSION D2PAK (TYPE STD-ST) 0079457/L 17/24 Package mechanical data Figure 8. L7900 series DRAWING DIMENSION D2PAK (TYPE WOOSEOK-SUBCON.) 0079457/L 18/24 L7900 series Table 11. Package mechanical data D2PAK MECHANICAL DATA DIM. MIN. TYPE WOOSEOK-SUBCON. mm. mm. TYP. MAX. MIN. TYP. MAX. A 4.40 4.60 4.30 4.70 A1 0.03 0.23 0 0.20 b 0.70 0.93 0.70 0.90 b2 1.14 1.70 1.17 1.37 c 0.45 0.60 0.45 0.50 0.60 c2 1.23 1.36 1.25 1.30 1.40 D 8.95 9.35 9 9.20 9.40 D1 7.50 E 10 E1 8.50 e 7.50 10.40 9.80 10.20 7.50 2.54 2.54 e1 4.88 5.28 H 15 15.85 15 J1 2.49 2.69 2.20 2.60 L 2.29 2.79 1.79 2.79 L1 1.27 1.40 1 1.40 L2 1.30 1.75 1.20 1.60 R V2 Note: TYPE STD-ST 5.08 0.4 0° 15.30 15.60 0.30 8° 0° 3° The D2PAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint. 19/24 Package mechanical data L7900 series Figure 9. D2PAK FOOTPRINT RECOMMENDED DATA Table 12. FOOTPRINT DATA VALUES 20/24 mm. inch. A 12.20 0.480 B 9.75 0.384 C 16.90 0.665 D 3.50 0.138 E 1.60 0.063 F 2.54 0.100 G 5.08 0.200 L7900 series Package mechanical data Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 180 13.0 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.476 21/24 Order code L7900 series 7 Order code Table 13. Order code Packaging Part numbers TO-220 (A Type) D2PAK TO-220FP TO-3 OUT. VOLT. L7905C L7905CV L7905CD2T-TR L7905CP L7905CT(1) -5 V L7906C L7906CV L7906CD2T-TR L7906CP(1) L7906CT(1) -6 V L7908CD2T-TR (1) (1) -8 V L7908C L7908CP L7908CT L7912C L7912CV L7912CD2T-TR L7912CP L7912CT(1) L7915C L7915CV L7915CD2T-TR L7915CP L7915CT -15 V L7918C L7918CV L7918CD2T-TR(1) L7918CP(1) L7918CT(1) -18 V L7920CV L7920CD2T-TR(1) L7920CP(1) L7920CT(1) -20 V L7924CV L7924CD2T-TR(1) L7924CP(1) L7924CT -24 V L7920C L7924C 1. L7908CV Available on Request. 22/24 -12 V L7900 series Revision history 8 Revision history Table 14. Revision history Date Revision Changes 22-Jun-2004 9 Ordering Codes updated Table 3, pag. 3. 31-Aug-2005 10 Add new order codes (TO-220 E Type) on Table 3, pag. 3. 19-Jan-2007 11 D2PAK mechanical data has been updated, add footprint data and the document has been reformatted. 23/24 L7900 series Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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