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PDF ( 数据手册 , 数据表 ) MC7906

零件编号 MC7906
描述 THREE-TERMINAL NEGATIVE VOLTAGE REGULATORS
制造商 Motorola Semiconductors
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MC7906 数据手册, 描述, 功能
Three-Terminal Negative
Voltage Regulators
The MC7900 series of fixed output negative voltage regulators are
intended as complements to the popular MC7800 series devices. These
negative regulators are available in the same seven–voltage options as the
MC7800 devices. In addition, one extra voltage option commonly employed
in MECL systems is also available in the negative MC7900 series.
Available in fixed output voltage options from – 5.0 V to – 24 V, 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 1.0 A.
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe–Area Compensation
Available in 2% Voltage Tolerance (See Ordering Information)
Representative Schematic Diagram
2.0 k 8.0 k
Gnd
3.6 k 1.0 k 4.0 k R1
1.2 k 1.6 k
R2
Order this document by MC7900/D
MC7900
Series
THREE–TERMINAL
NEGATIVE FIXED
VOLTAGE REGULATORS
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
1
2
3
Pin 1. Ground
2. Input
3. Output
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
(D2PAK)
12
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
10 k
20 pF
10 pF 10 k
2.0 k 20 k 20 k
1.1 k
240
750
This device contains 26 active transistors.
VO
0.3
VI
ORDERING INFORMATION
Device
Output Voltage
Operating
Tolerance
Temperature Range
MC79XXACD2T
2%
MC79XXCD2T
MC79XXACT
4%
2%
TJ = 0° to +125°C
MC79XXCT
4%
MC79XXBD2T
MC79XXBT
4% TJ = – 40° to +125°C
XX indicates nominal voltage.
Package
Surface Mount
Insertion Mount
Surface Mount
Insertion Mount
STANDARD APPLICATION
Input
Cin*
0.33 µF
MC79XX
Output
CO**
1.0 µF
A common ground is required between the input
and the output voltages. The input voltage must
remain typically 2.0 V above more negative even
during the high point of the input ripple voltage.
XX, These two digits of the type number
indicate nominal voltage.
** Cin is required if regulator is located an
appreciable distance from power supply filter.
** CO improve stability and transient response.
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MC7905
MC7905.2
MC7906
MC7908
5.0 V
5.2 V
6.0 V
8.0 V
MC7912
MC7915
MC7918
MC7924
12 V
15 V
28 V
24 V
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 6
1







MC7906 pdf, 数据表
MC7900
Figure 1. Worst Case Power Dissipation as a
Function of Ambient Temperature
20
10
θHS = 5°C/W
5.0
4.0
3.0
θHS = 15°C/W
2.0
Infinite Heatsink
No Heatsink
1.0
0.5
0.4
0.3
0.2
θJC = 5° C/W
θJA = 65° C/W
0.1 PD(max) = 15W
25 50
75
100 125
TA, AMBIENT TEMPERATURE (°C)
150
Figure 2. Peak Output Current as a Function
of Input–Output Differential Voltage
2.5
2.0
TJ = +25°C
1.5
1.0
0.5
0
0 3.0 6.0 9.0 12 15 18 21 24 27 30
|VI –VO| INPUT–OUTPUT VOLTAGE DIFFERENTIAL (V)
100
80
60
40
20
0
10
Figure 3. Ripple Rejection as a
Function of Frequency
Vin = –11 V
VO = – 6.0 V
IO = 20 mA
100 1.0 k
10 k
f, FREQUENCY (Hz)
100 k
Figure 5. Output Voltage as a Function
of Junction Temperature
6.26
6.22
6.18
6.14
Vin = –11 V
VD = – 6.0 V
6.10 IO = 20 mA
6.06
–25
0 25 50 75 100 125 150 175
TJ, JUNCTION TEMPERATURE (°C)
Figure 4. Ripple Rejection as a Function
of Output Voltage
80
f = 120 Hz
70 IO = 20 mA
Vin = 1.0 V(RMS)
60
50
40
2.0 4.0 6.0 8.0 10 12 14 16 18 20 22
VO, OUTPUT VOLTAGE (V)
5.2
5.0
4.8
4.6
4.4
4.2
0
Figure 6. Quiescent Current as a
Function of Temperature
Vin = –11 V
VO = – 6.0 V
IO = 20 mA
25 50 75 100
TJ, JUNCTION TEMPERATURE (°C)
125
8 MOTOROLA ANALOG IC DEVICE DATA














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