DATA SHEET www.onsemi.com Negative Voltage TO220 Regulators T SUFFIX CASE 221AB 1.0 A Heatsink surface connected to Pin 2. MC7900 Series 1 2 3 The MC7900 series of fixed output negative voltage regulators are Pin 1. Ground intended as complements to the popular MC7800 series devices. 2. Input These negative regulators are available in the same sevenvoltage 3. Output options as the MC7800 devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the 2 D PAK negative MC7900 series. D2T SUFFIX Available in fixed output voltage options from 5.0 V to 24 V, CASE 936 1 2 these regulators employ current limiting, thermal shutdown, and 3 safearea compensation making them remarkably rugged under most operating conditions. With adequate heatsinking they can deliver Heatsink surface (shown as terminal 4 in output currents in excess of 1.0 A. case outline drawing) is connected to Pin 2. No External Components Required Internal Thermal Overload Protection STANDARD APPLICATION Internal Short Circuit Current Limiting MC79XX Input Output Output Transistor SafeArea Compensation Available in 2% Voltage Tolerance (See Ordering Information) C * in C ** O 0.33 F 1.0 F PbFree Package May be Available. The GSuffix Denotes a PbFree Lead Finish A common ground is required between the input Gnd and the output voltages. The input voltage must 2.0 k 8.0 k remain typically 2.0 V above more negative even during the high point of the input ripple voltage. 3.6 k 4.0 k R 1.0 k 1 XX, These two digits of the type number 1.2 k indicate nominal voltage. 1.6 k ** C is required if regulator is located an in R 2 appreciable distance from power supply filter. ** C improve stability and transient response. O V 10 k O ORDERING INFORMATION 20 pF See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. 10 pF 10 k 240 20 k 20 k DEVICE MARKING INFORMATION 2.0 k 0.3 1.1 k See general marking information in the device marking 750 section on page 12 of this data sheet. V I This device contains 26 active transistors. Figure 1. Representative Schematic Diagram Semiconductor Components Industries, LLC, 2013 1 Publication Order Number: October, 2021 Rev. 21 MC7900/D 25 12 k 2.4 k 1.0 k 14.7 k 4.0 k 2.0 kMC7900 Series MAXIMUM RATINGS (T = +25C, unless otherwise noted.) A Rating Symbol Value Unit Input Voltage (5.0 V V 18 V) V 35 Vdc O I Input Voltage (24 V) 40 Power Dissipation Case 221A T = +25C P Internally Limited W A D Thermal Resistance, JunctiontoAmbient 65 C/W JA Thermal Resistance, JunctiontoCase 5.0 C/W JC 2 Case 936 (D PAK) T = +25C P Internally Limited W A D Thermal Resistance, JunctiontoAmbient 70 C/W JA Thermal Resistance, JunctiontoCase 5.0 C/W JC Storage Junction Temperature Range T 65 to +150 C stg Junction Temperature T +150 C J Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. *This device series contains ESD protection and exceeds the following tests: Human Body Model 2000 V per MIL STD 883, Method 3015 Machine Model Method 200 V MC7905B, MC7905C ELECTRICAL CHARACTERISTICS (V = 10 V, I = 500 mA, Tlow* < T < +125C, unless otherwise noted.) I O J Characteristics Symbol Min Typ Max Unit Output Voltage (T = +25C) V 4.8 5.0 5.2 Vdc J O Line Regulation (Note 1) Reg mV line (T = +25C, I = 100 mA) J O 7.0 Vdc V 25 Vdc 7.0 50 I 8.0 Vdc V 12 Vdc 2.0 25 I (T = +25C, I = 500 mA) J O 7.0 Vdc V 25 Vdc 35 100 I 8.0 Vdc V 12 Vdc 8.0 50 I Load Regulation, T = +25C (Note 1) Reg mV J load 5.0 mA I 1.5 A 11 100 O 250 mA I 750 mA 4.0 50 O Output Voltage V Vdc O 7.0 Vdc V 20 Vdc, 5.0 mA I 1.0 A, P 15 W 4.75 5.25 I O Input Bias Current (T = +25C) I 4.3 8.0 mA J IB Input Bias Current Change I mA IB 7.0 Vdc V 25 Vdc 1.3 I 5.0 mA I 1.5 A 0.5 O Output Noise Voltage (T = +25C, 10 Hz f 100 kHz) V 40 V A n Ripple Rejection (I = 20 mA, f = 120 Hz) RR 70 dB O Dropout Voltage V V Vdc I O I = 1.0 A, T = +25C 1.3 O J Average Temperature Coefficient of Output Voltage V / T mV/C O I = 5.0 mA, Tlow* T +125C 1.0 O J 1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account O separately. Pulse testing with low duty cycle is used. *Tlow = 40C for MC7905B and Tlow = 0C for MC7905C. www.onsemi.com 2