MC79M00 Series
500 mA Negative Voltage
Regulators
The MC79M00 series of fixed output negative voltage regulators
are intended as complements to the popular MC78M00 series devices.
Available in fixed output voltage options of 5.0 V, 8.0 V, 12 V
MC79M00 Series
MAXIMUM RATINGS (T = 25C, unless otherwise noted.)
A
Rating Symbol Value Unit
Input Voltage V 35 Vdc
I
Power Dissipation
Case 221A (TO 220 3)
T = 25C P Internally Limited W
A D
Thermal Resistance, JunctiontoAmbient 65 C/W
JA
Thermal Resistance, JunctiontoCase 5.0 C/W
JC
Case 369C (DPAK3)
T = 25C P Internally Limited W
A D
Thermal Resistance, JunctiontoAmbient 92 C/W
JA
Thermal Resistance, JunctiontoCase 6.0 C/W
JC
Storage Junction Temperature T 65 to +150 C
stg
Operating Junction Temperature Range T 40 to +150 C
J
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
*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
MC79M05B, C
ELECTRICAL CHARACTERISTICS (V = 10 V, I = 350 mA, T to T (Note 2), unless otherwise noted.)
I O low high
Characteristic Symbol Min Typ Max Unit
Output Voltage (T = 25C) V 4.8 5.0 5.2 Vdc
J O
Line Regulation, T = 25C (Note 1) Reg mV
J line
7.0 Vdc V 25 Vdc
7.0 50
I
8.0 Vdc V 18 Vdc
I 2.0 30
Load Regulation, T = 25C (Note 1) Reg mV
J load
5.0 mA I 500 mA
30 100
O
Output Voltage V Vdc
O
7.0 Vdc V 25 Vdc, 5.0 mA I 350 mA
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
8.0 Vdc V 25 Vdc, I = 350 mA
I O 0.4
5.0 mA I 350 mA, V = 10 V
O I
0.4
Output Noise Voltage, T = 25C, 10 Hz f 100 kHz V 40 V
A n
Ripple Rejection (f = 120 Hz) RR 54 66 dB
Dropout Voltage V V Vdc
I O
I = 500 mA, T = 25C
1.1
O J
Average Temperature Coefficient of Output Voltage V /T mV/C
O
I = 5.0 mA, 0C T 125C
0.2
O J
1. Load and line regulation are specified at constant temperature. Change in V due to heating effects must be taken into account separately.
O
Pulse testing with low duty cycle is used.
2. B = T to T , 40C < T < 125C C = T to T , 0C < T < 125C.
low high J low high J