MC79XXCT Datasheet, PDF (4/8 Pages) Vishay Siliconix – 3-Terminal Fixed Negative Voltage Regulators

MC79xxCT Series
Vishay
formerly General Semiconductor
Electrical Characteristics – MC7909
Vin = –15V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Parameter
Symbol
Test
Circuit
Conditions
Min. Typ. Max. Unit
Output Voltage
TJ = 25°C
–8.82 –9.0 –9.18
Vo
1
Vin = –11.5 to –24V,
–8.73
—
–9.27
V
Io = 5mA to 1A
Line Regulation
(TJ = 25°C)
REGline
1
Vin = –11.5 to –27V
—
Vin = –12 to –16V
—
7
180
mV
2
90
Load Regulation
(TJ = 25°C)
Io = 5mA to 1.5A
—
12
180
REGload
1
mV
Io = 250mA to 750mA —
4
90
Quiescent Current
Iq
2
TJ = 25°C
—
2.2
4.5 mA
Quiescent Current Change
(TJ = 25°C)
Vin = –11.5 to –27V
—
—
1
∆Iq
2
mA
Io = 5mA to 1A
—
—
0.5
Output Noise Voltage (TJ = 25°C)
Vn
1
f = 10Hz to 100KHz
—
58
—
µV
Ripple Rejection Ratio
RR
3
Vin = –12 to –22V
56
71
—
dB
Io = 100mA, f = 120Hz
Dropout Voltage
Vdrop
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Peak Output Current
Temp. Coefficient of Output Voltage
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1 Io = 5mA, TJ = 0 to125°C —
0.6
— mV/°C
Electrical Characteristics – MC7912
Vin = –19V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Parameter
Symbol
Test
Circuit
Conditions
Min. Typ. Max. Unit
Output Voltage
TJ = 25°C
–11.76 –12.0 –12.24
Vo
1
Vin = –14.5 to –27V,
–11.64 —
–12.36
V
Io = 5mA to 1A
Line Regulation
(TJ = 25°C)
REGline
1
Vin = –14.5 to –30V
Vin = –15 to –19V
—
10
240
mV
—
3
120
Load Regulation
(TJ = 25°C)
Io = 5mA to 1.5A
—
12
240
REGload
1
mV
Io = 250mA to 750mA —
4
120
Quiescent Current
Iq
2
TJ = 25°C
—
2.5
5
mA
Quiescent Current Change
(TJ = 25°C)
Vin = –14.5 to –30V
—
—
1
∆Iq
2
mA
Io = 5mA to 1A
—
—
0.5
Output Noise Voltage (TJ = 25°C)
Vn
1
f = 10Hz to 100KHz
—
75
—
µV
Ripple Rejection Ratio
RR
3
Vin = –15 to –25V
55
70
—
dB
Io = 100mA, f = 120Hz
Dropout Voltage
Vdrop
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Peak Output Current
Io-peak
1
TJ = 25°C
—
2.1
—
A
Temp. Coefficient of Output Voltage
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C — –0.8 — mV/°C
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Document Number 74814
11-Jun-02