VISHAY MC7909CT

MC79xxCT Series
Vishay
New Product
formerly General Semiconductor
3-Terminal Fixed Negative Voltage Regulators
Pin Arrangement
Description
These voltage regulators are intended as complements
to the popular MC78xx Series devices. These negative regulators are available in the same seven-voltage options as
the MC78xx devices. In addition, one extra voltage
option commonly employed in MECL systems is also
available in the negative MC79xx Series.
TO-220
1. Ground
3
2. Input
2
1
3. Output
(heatsink connected to pin 2)
Available in fixed output voltage options from –5.0 to –24
volts, these regulators employ current limiting, thermal shutdown, and safe-area compensation – making them remarkably rugged under most operating conditions. With adequate
heatsinking they can deliver output currents in excess of
1.5 ampere.
Standard Application
Features
Input
Output
MC79xx
• Output current in excess of 1.5 Ampere
• No external components required
Co
0.1µF
Cin
0.33µF
• Internal thermal overload protection
• Internal short-circuit current limiting
• Output transistor safe-area compensation
• Output voltage offered in 2% tolerance
Notes:
A common ground is required between the input and the output voltages.
The input voltage must remain typically 2.0V more negative even during
the high point on the input ripple voltage.
Mechanical Data
Case: TO-220 Package
Weight: approx. 2.24g
xx = these two digits of the part number indicate output voltage.
Cin is required if regulator is located an appreciable distance from power
supply filter.
Case outline is on the back page
Co improves stability and transient response.
Internal Block Diagram
GND
R1
R2
Reference
Voltage
Output
+
Q1
-I1
I2
Q2
Short Circuit
Protection
RSC
Input
Document Number 74814
11-Jun-02
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1
MC79xxCT Series
Vishay
formerly General Semiconductor
Maximum Ratings
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter
Symbol
Value
Unit
Vin
–30
V
Vin
–40
V
Power Dissipation
PD
15
W
Operating Junction Temperature Range
TJ
–20 to +150
°C
Tstg
–65 to +150
°C
Input Voltage
(1)
Input Voltage
(2)
(3)
Storage Junction Temperature Range
Notes: (1) MC7905 to MC7918
(2) MC7924
(3) Follow the derating curve. When TJ exceeds 150°C, the internal circuit cuts off the output
Electrical Characteristics – MC7905
Vin = –10V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Symbol
Test
Circuit
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
∆REG line
1
Load Regulation
(TJ = 25°C)
∆REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
Ripple Rejection Ratio
RR
Parameter
Quiescent Current
Dropout Voltage
Peak Output Current
Temp. Coefficient of Output Voltage
Conditions
Min.
Typ.
Max.
TJ = 25°C
–4.90
–5.0
–5.10
Vin = –7 to –20V,
Io = 5mA to 1A
–4.85
—
–5.15
Vin = –7 to –25V
—
3
100
Vin = –8 to –12V
—
1
50
Io = 5mA to 1.5A
—
10
100
Io = 250mA to 750mA
—
3
50
TJ = 25°C
—
2
4
Vin = –7 to –25V
—
—
1.3
Io = 5mA to 1A
—
—
0.5
1
f = 10Hz to 100KHz
—
40
—
µV
3
Vin = –8 to –18V
Io = 100mA, f = 120Hz
62
74
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Vdrop
V
mV
mV
mA
mA
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
–0.4
—
mV/°C
Note: Where the condition TJ = 25°C is specified, pulse testing (<10ms) with low duty cycle is required to maintain junction temperature stability.
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2
Unit
2 of 8
Document Number 74814
11-Jun-02
MC79xxCT Series
Vishay
formerly General Semiconductor
Electrical Characteristics – MC7906
Vin = –11V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Symbol
Test
Circuit
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
REG line
1
Load Regulation
(TJ = 25°C)
REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
Ripple Rejection Ratio
RR
Parameter
Quiescent Current
Dropout Voltage
Peak Output Current
Temp. Coefficient of Output Voltage
Conditions
Min.
Typ.
Max.
TJ = 25°C
–5.88
–6.0
–6.12
Vin = –8 to –21V,
Io = 5mA to 1A
–5.82
—
–6.18
Vin = –8 to –25V
—
4
120
Vin = –9 to –13V
—
1.5
60
Io = 5mA to 1.5A
—
10
120
Io = 250mA to 750mA
—
3
60
TJ = 25°C
—
2
4
Vin = –8 to –25V
—
—
1.3
Io = 5mA to 1A
—
—
0.5
1
f = 10Hz to 100KHz
—
44
—
µV
3
Vin = –9 to –19V
Io = 100mA, f = 120Hz
60
73
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Vdrop
Unit
V
mV
mV
mA
mA
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
–0.5
—
mV/°C
Unit
Electrical Characteristics – MC7908
Vin = –14V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Parameter
Symbol
Test
Circuit
Conditions
Min.
Typ.
Max.
TJ = 25°C
–7.84
–8.0
–8.16
Vin = –10.5 to –23V,
Io = 5mA to 1A
–7.76
—
–8.24
Vin = –10.5 to –25V
—
6
160
Vin = –11 to –15V
—
2
80
Io = 5mA to 1.5A
—
12
160
Io = 250mA to 750mA
—
4
80
TJ = 25°C
—
2.2
4.5
Vin = –10.5 to –25V
—
—
1
Io = 5mA to 1A
—
—
0.5
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
REG line
1
Load Regulation
(TJ = 25°C)
REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
1
f = 10Hz to 100KHz
—
52
—
µV
Ripple Rejection Ratio
RR
3
Vin = –11 to –21V
Io = 100mA, f = 120Hz
56
71
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Quiescent Current
Dropout Voltage
Peak Output Current
Temp. Coefficient of Output Voltage
Document Number 74814
11-Jun-02
Vdrop
V
mV
mV
mA
mA
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
–0.6
—
mV/°C
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3
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.
Symbol
Test
Circuit
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
REG line
1
Load Regulation
(TJ = 25°C)
REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
Ripple Rejection Ratio
RR
Parameter
Quiescent Current
Dropout Voltage
Peak Output Current
Temp. Coefficient of Output Voltage
Conditions
Min.
Typ.
Max.
TJ = 25°C
–8.82
–9.0
–9.18
Vin = –11.5 to –24V,
Io = 5mA to 1A
–8.73
—
–9.27
Vin = –11.5 to –27V
—
7
180
Vin = –12 to –16V
—
2
90
Io = 5mA to 1.5A
—
12
180
Io = 250mA to 750mA
—
4
90
TJ = 25°C
—
2.2
4.5
Vin = –11.5 to –27V
—
—
1
Io = 5mA to 1A
—
—
0.5
1
f = 10Hz to 100KHz
—
58
—
µV
3
Vin = –12 to –22V
Io = 100mA, f = 120Hz
56
71
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Vdrop
Unit
V
mV
mV
mA
mA
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
0.6
—
mV/°C
Unit
Electrical Characteristics – MC7912
Vin = –19V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Symbol
Test
Circuit
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
REG line
1
Load Regulation
(TJ = 25°C)
REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
Ripple Rejection Ratio
RR
Parameter
Quiescent Current
Dropout Voltage
Peak Output Current
Temp. Coefficient of Output Voltage
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4
Conditions
Min.
Typ.
Max.
TJ = 25°C
–11.76
–12.0
–12.24
Vin = –14.5 to –27V,
Io = 5mA to 1A
–11.64
—
–12.36
Vin = –14.5 to –30V
—
10
240
Vin = –15 to –19V
—
3
120
Io = 5mA to 1.5A
—
12
240
Io = 250mA to 750mA
—
4
120
TJ = 25°C
—
2.5
5
Vin = –14.5 to –30V
—
—
1
Io = 5mA to 1A
—
—
0.5
1
f = 10Hz to 100KHz
—
75
—
µV
3
Vin = –15 to –25V
Io = 100mA, f = 120Hz
55
70
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Vdrop
V
mV
mV
mA
mA
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
–0.8
—
mV/°C
Document Number 74814
11-Jun-02
MC79xxCT Series
Vishay
formerly General Semiconductor
Electrical Characteristics – MC7915
Vin = –23V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Parameter
Symbol
Test
Circuit
Conditions
Min.
Typ.
Max.
TJ = 25°C
–14.7
–15
–15.3
Vin = –17.5 to –30V,
Io = 5mA to 1A
–14.55
—
–15.45
Vin = –17.5 to –30V
—
11
300
Vin = –18 to –22V
—
3
150
Io = 5mA to 1.5A
—
12
300
Io = 250mA to 750mA
—
4
150
TJ = 25°C
—
2.5
5
Vin = –17.5 to –30V
—
—
1
Io = 5mA to 1A
—
—
0.5
Unit
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
REG line
1
Load Regulation
(TJ = 25°C)
REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
1
f = 10Hz to 100KHz
—
90
—
µV
Ripple Rejection Ratio
RR
3
Vin = –18 to –28V
Io = 100mA, f = 120Hz
54
69
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Quiescent Current
Dropout Voltage
Peak Output Current
Temp. Coefficient of Output Voltage
Vdrop
V
mV
mV
mA
mA
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
0.9
—
mV/°C
Unit
Electrical Characteristics – MC7918
Vin = –27V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Parameter
Symbol
Test
Circuit
Conditions
Min.
Typ.
Max.
TJ = 25°C
–17.64
–18.0
–18.36
Vin = –21 to –33V,
Io = 5mA to 1A
–17.46
—
–18.54
Vin = –21 to –33V
—
15
360
Vin = –22 to –26V
—
5
180
Io = 5mA to 1.5A
—
12
360
Io = 250mA to 750mA
—
4
180
TJ = 25°C
—
2.5
5
Vin = –21 to –33V
—
—
1
Io = 5mA to 1A
—
—
0.5
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
REG line
1
Load Regulation
(TJ = 25°C)
REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
1
f = 10Hz to 100KHz
—
110
—
µV
Ripple Rejection Ratio
RR
3
Vin = –21 to –31V
Io = 100mA, f = 120Hz
53
68
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Quiescent Current
Dropout Voltage
Peak Output Current
Temp. Coefficient of Output Voltage
Document Number 74814
11-Jun-02
Vdrop
V
mV
mV
mA
mA
Io-peak
1
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
–1
—
mV/°C
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5
MC79xxCT Series
Vishay
formerly General Semiconductor
Electrical Characteristics – MC7924
Vin = –33V, Iout = 500mA, Cin = 2µF, Cout = 1µF; TJ = 0°C to 125°C, unless otherwise noted.
Symbol
Test
Circuit
Output Voltage
Vo
1
Line Regulation
(TJ = 25°C)
REG line
1
Load Regulation
(TJ = 25°C)
REG load
1
Iq
2
Quiescent Current Change
(TJ = 25°C)
∆Iq
2
Output Noise Voltage (TJ = 25°C)
Vn
Ripple Rejection Ratio
RR
Parameter
Quiescent Current
Dropout Voltage
Conditions
Min.
Typ.
Max.
TJ = 25°C
–23.52
–24
–24.48
Vin = –26 to –38V,
Io = 5mA to 1A
–23.28
—
–24.72
Vin = –26 to –38V
—
18
480
Vin = –27 to –32V
—
6
240
Io = 5mA to 1.5A
—
12
480
Io = 250mA to 750mA
—
4
240
TJ = 25°C
—
3
5
Vin = –26 to –38V
—
—
1
Io = 5mA to 1A
—
—
0.5
1
f = 10Hz to 100KHz
—
170
—
µV
3
Vin = –26 to –36V
Io = 100mA, f = 120Hz
50
65
—
dB
Io = 1.0A, TJ = 25°C
—
1.1
—
V
Vdrop
Peak Output Current
Temp. Coefficient of Output Voltage
MC79xx
mV
mA
mA
TJ = 25°C
—
2.1
—
A
∆Vo/∆TA
1
Io = 5mA, TJ = 0 to125°C
—
–1
—
mV/°C
Test Circuit 2
1
3
MC79xx
A
3
2
1µF
1µF
+
V
2µF
mV
1
2
+
V
Io-peak
Test Circuit 1
1
Unit
+
+
2µF
Io
Io
Test Circuit 3
1
MC79xx
3
2
+
2µF
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6
1µF
+
V
Io
Document Number 74814
11-Jun-02
MC79xxCT Series
Vishay
formerly General Semiconductor
Ratings and
Characteristic Curves (T
A
= 25°C unless otherwise noted)
Fig. 1 – Power Dissipation vs.
Ambient Temperature
Fig. 2 – Quiescent Current
20
Infinite Heatsink
θHS = 5°C/W
IIB -- Input Bias Current (mA)
PO -- Power Dissipation (W)
10
θHS = 15°C/W
No Heatsink
1.0
θJC = 5°C/W
θJA = 65°C/W
PD(max) = 15W
0.1
25
75
100
125
0
150
50
75
100
125
TJ -- Junction Temperature (°C)
Fig. 3 – Peak Output Current
Fig. 4 –Ripple Rejection Ratio
vs. Frequency
100
RR -- Ripple Rejection (db)
Io -- Output Current (A)
25
TA -- Ambient Temperature (°C)
2.0
1.5
1.0
0.5
0
6.0
12
18
24
80
60
40
20
100
1.0K
10K
Input -- Output Voltage Differential (V)
f -- Frequency (HZ)
Fig. 5 – Ripple Rejection
vs. Output Voltage
Fig. 6 – Output Voltage
vs. Junction Temperature
100K
6.26
VO -- Output Voltage (-V)
f = 120Hz
Io = 20mA
Vin = 1.0V(RMS)
70
60
50
40
4.0
Vin = --11V
Vo = --6.0V
Io = 20mA
0
10
30
80
RR -- Ripple Rejection (db)
1.9
1.8
50
2.5
0
Vin = -11V
VO = -6.0V
IO = 20mA
2.0
8.0
12
16
Vo -- Output Voltage (V)
Document Number 74814
11-Jun-02
20
24
6.22
6.18
6.14
Vin = --11V
Vo = --6.0V
Io = 20mA
6.10
6.06
--25
0
25
50
75
100
125
150
175
TJ -- Junction Temperature (°C)
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7
MC79xxCT Series
Vishay
formerly General Semiconductor
TO-220 Case Outline
10.25 ± 0.25
4.85 ±
0.375
1.27
± 0.12
3.84 ± 0.6 Dia.
2.69 ± 0.25
6.26 ± 0.25
14.8 ± 0.51
8.54 ± 0.26
28.7 ± 0.92
3.94 ± 0.375
13.9 ± 0.41
2.53
± 0.185
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8
Dimensions in
millimeters
1.3 ± 0.185
0.8 ± 0.12
0.387 ± 0.09
2.55
± 0.375
Document Number 74814
11-Jun-02