L7905ACD2T-TR [STMICROELECTRONICS]
Negative Fixed Voltage Regulator ; 负的固定电压稳压器\n
| 型号： | L7905ACD2T-TR |
| 厂家： | 
ST |
| 描述： | Negative Fixed Voltage Regulator
|
| 文件： | 总11页 (文件大小：95K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
L7900AC
SERIES
2% NEGATIVE VOLTAGE REGULATORS
■
■
OUTPUT CURRENT UP TO 1.5 A
OUTPUT VOLTAGESOF -5; -5.2; -6; -8; -12;
-15; -18; -20; -22; -24V
■
■
■
THERMAL OVERLOADPROTECTION
SHORT CIRCUIT PROTECTION
OUTPUT TRANSITION SOA PROTECTION
DESCRIPTION
3
The L7900AC series of three-terminal negative
regulators is available in TO-220 and D2PAK
packages and several fixed output voltages.
These regulators can provide local on-card
regulation, eliminating the distribution problems
associated with single point regulation;
furthermore, having the same voltage option as
the L7800A positive standard series, they are
particularly suited for split power supplies. In
addition, the -5.2V is also available for ECL
system. If adequate heat sinking is provided,
they can deliver over 1.5A output current.
Although designed primarily as fixed voltage
regulators, these devices can be used with
external components to obtain adjustable
voltagesand currents.
1
D2PAK
TO-220
SCHEMATIC DIAGRAM
1/11
November 1999
L7900AC
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
DC InputVoltage (for VO = -5 to -18V)
(forVO = -20, -24V)
Value
Unit
Vi
-35
-40
V
V
Io
Output Current
Internally limited
Internally limited
0 to 125
Ptot
Top
Tstg
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
oC
oC
- 65 to 150
THERMAL DATA
Symbol
Parameter
D2PAK
TO-220
Unit
Rthj-case Thermal Resistance Junction-case
Rthj-amb Thermal Resistance Junction-ambient
Max
Max
3
62.5
3
50
oC/W
oC/W
CONNECTION DIAGRAM AND ORDERING NUMBERS
(top view)
TO-220
D2PAK
Type
L7905AC
TO-220
L7905ACV
D2PAK (*)
Output Voltage
L7905ACD2T
L7952ACD2T
L7906ACD2T
L7908ACD2T
L7912ACD2T
L7915ACD2T
L7918ACD2T
L7920ACD2T
L7922ACD2T
L7924ACD2T
-5V
-5.2V
-6V
L7952AC
L7906AC
L7908AC
L7912AC
L7915AC
L7918AC
L7920AC
L7922AC
L7924AC
L7952ACV
L7906ACV
L7908ACV
L7912ACV
L7915ACV
L7918ACV
L7920ACV
L7922ACV
L7924ACV
-8V
-12V
-15V
-18V
-20V
-22V
-24V
(*) AVAILABLE IN TAPE AND REEL WITH ”-TR” SUFFIX
APPLICATION CIRCUIT
2/11
L7900AC
o
ELECTRICAL CHARACTERISTICS FOR L7905A
(refer to the test circuits, Tj = 0 to 125 C,
Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Vo
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-4.9
-4.8
Typ.
-5
Max.
Unit
V
Tj = 25 oC
-5.1
-5.2
Vo
Io = -5 mA to -1 A Po ≤ 15 W
-5
V
Vi = 8 to 20 V
V * LineRegulation
o
Vi = -7 to -25 V Tj = 25 oC
100
50
mV
mV
∆
Vi = -8 to -12 V Tj = 25 oC
∆Vo* Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
100
50
mV
mV
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
mA
mA
∆Id
∆Id
∆Vo
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -8 to -25 V
0.5
1.3
mA
mV/oC
Io = 5 mA
-0.4
T
∆
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
100
60
V
µ
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
dB
V
Vd
Dropout Voltage
Io = 1 A
1.4
∆VO = 100 mV
Isc
Short Circuit Current
2.1
2.5
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
ELECTRICAL CHARACTERISTICS FOR L7952A (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-5.1
-5
Typ.
-5.2
-5.2
Max.
-5.3
-5.4
Unit
V
Vo
Tj = 25 oC
Vo
Io = -5 mA to -1 A Po 15 W
V
≤
Vi = -9 to -21 V
∆Vo* LineRegulation
Vi = -8 to -25 V Tj = 25 oC
105
52
mV
mV
Vi = -9 to -13 V Tj = 25 oC
V * Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
105
52
mV
mV
∆
o
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
mA
mA
∆Id
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -9 to -25 V
0.5
1.3
I
mA
mV/oC
∆
d
V
Io = 5 mA
-0.5
∆
o
∆T
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
125
60
µV
dB
V
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
Vd
Dropout Voltage
Io = 1 A
1.4
V = 100 mV
O
∆
Isc
Short Circuit Current
2.1
2.5
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
3/11
L7900AC
o
ELECTRICAL CHARACTERISTICS FOR L7906A
(refer to the test circuits, Tj = 0 to 125 C,
Vi = -11V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-5.88
-5.76
Typ.
-6
Max.
-6.12
-6.24
Unit
V
Vo
Tj = 25 oC
Vo
Io = -5 mA to -1 A Po ≤ 15 W
-6
V
Vi = -9.5to -21.5 V
V * LineRegulation
o
Vi = -8.5to -25 V Tj = 25 oC
120
60
mV
mV
∆
Vi = -9 to -15 V Tj = 25 oC
∆Vo* Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
120
60
mV
mV
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
mA
mA
∆Id
∆Id
∆Vo
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -9.5to -25 V
Io = 5 mA
0.5
1.3
mA
mV/oC
-0.6
T
∆
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
144
60
V
µ
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
dB
V
Vd
Dropout Voltage
Io = 1 A
1.4
∆VO = 100 mV
Isc
Short Circuit Current
2
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
2.5
ELECTRICAL CHARACTERISTICS FOR L7908A (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -14V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-7.84
-7.68
Typ.
Max.
-8.16
-8.32
Unit
V
Vo
Tj = 25 oC
-8
Vo
Io = -5 mA to -1 A Po 15 W
-8
V
≤
Vi = -11.5 to -23 V
∆Vo* LineRegulation
Vi = -10.5 to -25 V Tj = 25 oC
160
80
mV
mV
Vi = -11 to -17 V T = 25 oC
j
V * Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
160
80
mV
mV
∆
o
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
0.5
1
mA
mA
∆Id
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -11.5 to -25 V
Io = 5 mA
I
mA
mV/oC
∆
d
V
-0.6
∆
o
∆T
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
175
60
µV
dB
V
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
Vd
Dropout Voltage
Io = 1 A
1.1
V = 100 mV
O
∆
Isc
Short Circuit Current
1.5
2.5
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
4/11
L7900AC
o
ELECTRICAL CHARACTERISTICS FOR L7912A
(refer to the test circuits, Tj = 0 to 125 C,
Vi = -19V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Vo
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-11.75
-11.5
Typ.
-12
Max.
Unit
V
Tj = 25 oC
-12.25
-12.5
Vo
Io = -5 mA to -1 A Po ≤ 15 W
-12
V
Vi = -15.5 to -27 V
V * LineRegulation
o
Vi = -14.5 to -30 V Tj = 25 oC
240
120
mV
mV
∆
Vi = -16 to -22 V T = 25 oC
j
∆Vo* Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
240
120
mV
mV
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
0.5
1
mA
mA
∆Id
∆Id
∆Vo
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -15 to -25 V
Io = 5 mA
mA
mV/oC
-0.8
T
∆
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
200
60
V
µ
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
dB
V
Vd
Dropout Voltage
Io = 1 A
1.1
∆VO = 100 mV
Isc
Short Circuit Current
1.5
2.5
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
ELECTRICAL CHARACTERISTICS FOR L7915A (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -23V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-14.7
-14.4
Typ.
Max.
-15.3
-15.6
Unit
V
Vo
Tj = 25 oC
-15
Vo
Io = -5 mA to -1 A Po 15 W
-15
V
≤
Vi = -18.5 to -30 V
∆Vo* LineRegulation
Vi = -17.5 to -30 V Tj = 25 oC
300
150
mV
mV
Vi = -20 to -26 V T = 25 oC
j
V * Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
300
150
mV
mV
∆
o
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
0.5
1
mA
mA
∆Id
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -18.5 to -30 V
Io = 5 mA
I
mA
mV/oC
∆
d
V
-0.9
∆
o
∆T
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
250
60
µV
dB
V
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
Vd
Dropout Voltage
Io = 1 A
1.1
V = 100 mV
O
∆
Isc
Short Circuit Current
1.3
2.3
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
5/11
L7900AC
o
ELECTRICAL CHARACTERISTICS FOR L7918A
(refer to the test circuits, Tj = 0 to 125 C,
Vi = -27V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-17.64
-17.3
Typ.
-18
Max.
-18.36
-18.7
Unit
V
Vo
Tj = 25 oC
Vo
Io = -5 mA to -1 A Po ≤ 15 W
-18
V
Vi = -22 to -33 V
V * LineRegulation
o
Vi = -21 to -33 V T = 25 oC
360
180
mV
mV
∆
j
Vi = -24 to -30 V T = 25 oC
j
∆Vo* Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
360
180
mV
mV
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
0.5
1
mA
mA
∆Id
∆Id
∆Vo
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -22 to -33 V
Io = 5 mA
mA
mV/oC
-1
T
∆
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
300
60
V
µ
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
dB
V
Vd
Dropout Voltage
Io = 1 A
1.1
∆VO = 100 mV
Isc
Short Circuit Current
1.1
2.2
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
ELECTRICAL CHARACTERISTICS FOR L7920A (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -29V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-19.6
-19.2
Typ.
Max.
-20.4
-20.8
Unit
V
Vo
Tj = 25 oC
-20
Vo
Io = -5 mA to -1 A Po 15 W
-20
V
≤
Vi = -24 to -35 V
∆Vo* LineRegulation
Vi = -23 to -35 V T = 25 oC
400
200
mV
mV
j
Vi = -26 to -32 V T = 25 oC
j
V * Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
400
200
mV
mV
∆
o
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
0.5
1
mA
mA
∆Id
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -24 to -35 V
Io = 5 mA
I
mA
mV/oC
∆
d
V
-1.1
∆
o
∆T
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
350
60
µV
dB
V
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
Vd
Dropout Voltage
Io = 1 A
1.1
V = 100 mV
O
∆
Isc
Short Circuit Current
0.9
2.2
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
6/11
L7900AC
o
ELECTRICAL CHARACTERISTICS FOR L7922A
(refer to the test circuits, Tj = 0 to 125 C,
Vi = -31V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Vo
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-21.5
-21.1
Typ.
-22
Max.
Unit
V
Tj = 25 oC
-22.4
-22.8
Vo
Io = -5 mA to -1 A Po ≤ 15 W
-22
V
Vi = -26 to -37 V
V * LineRegulation
o
Vi = -25 to -37 V T = 25 oC
440
220
mV
mV
∆
j
Vi = -28 to -34 V T = 25 oC
j
∆Vo* Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
440
220
mV
mV
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
0.5
1
mA
mA
∆Id
∆Id
∆Vo
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -26 to -37 V
Io = 5 mA
mA
mV/oC
-1.1
T
∆
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
375
60
V
µ
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
dB
V
Vd
Dropout Voltage
Io = 1 A
1.1
∆VO = 100 mV
Isc
Short Circuit Current
1.1
2.2
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
ELECTRICAL CHARACTERISTICS FOR L7924A (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -33V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwisespecified)
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
-23.5
-23
Typ.
Max.
-24.5
-25
Unit
V
Vo
Tj = 25 oC
-24
Vo
Io = -5 mA to -1 A Po 15 W
-24
V
≤
Vi = -27 to -38 V
∆Vo* LineRegulation
Vi = -27 to -38 V T = 25 oC
480
240
mV
mV
j
Vi = -30 to -36 V T = 25 oC
j
V * Load Regulation
Io = 5 to 1500 mA
Tj = 25 oC
480
240
mV
mV
∆
o
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
Id
Quiescent Current
3
0.5
1
mA
mA
∆Id
Quiescent Current Change
Quiescent Current Change
Output Voltage Drift
Io = 5 to 1000 mA
Vi = -27 to -38 V
Io = 5 mA
I
mA
mV/oC
∆
d
V
-1
∆
o
∆T
eN
Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
400
60
µV
dB
V
SVR Supply Voltage Rejection
∆Vi = 10 V
f = 120Hz
Tj = 25 oC
54
Vd
Dropout Voltage
Io = 1 A
1.1
V = 100 mV
O
∆
Isc
Short Circuit Current
1.1
2.2
A
A
Iscp
Short Circuit Peak Current
Tj = 25 oC
* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
7/11
L7900AC
APPLICATION INFORMATION
Figure 1 : Fixed Output Regulator.
Figure 2 : Split Power Supply (± 15V/1A).
Against potential latch-up problems.
Notes :
1. To specify an output voltage, substitute voltage value for ”XX”.
2. Required for stability. For value given, capacitor must be solid
tantalum. If aluminium electrolitics are used, at least ten times
value should be selected. C1 is required if regulator is located an
appreciable distance from power supply filter.
3. To improve transient response. If large capacitors are used, a
high current diode from input to output (1N4001 or similar) should
be introduced to protect the device from momentary input short
circuit.
Figure 3 : Circuit for Increasing Output Voltage.
Figure 4 : High Current Negative Regulator
(– 5V/4A with 5A current limiting).
R
1 + R 2
R 2
V XX
R 2
VO = V XX
> 3I d
C3 Optional for improved transient response and ripple rejection.
Figure 5 : Typical ECL System Power Supply
(– 5.2V/4A).
Optional dropping resistor to reduce the power dissipated in the
boost transistor.
8/11
L7900AC
TO-220 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
4.8
MIN.
MAX.
0.189
0.054
0.110
0.053
0.022
0.037
0.055
0.205
0.409
0.409
A
C
1.37
2.8
D
2.4
0.094
0.047
0.014
0.024
0.045
0.195
D1
E
1.2
1.35
0.55
0.94
1.4
0.35
0.61
1.15
4.95
F
F2
G
5.08
5.21
10.4
10.4
0.200
H2
H3
L2
L3
L5
L6
L7
Dia.
10.05
0.396
16.2
26.7
0.638
1.051
26.3
2.6
27.1
3
1.035
0.102
0.594
0.236
0.144
1.067
0.118
0.622
0.260
0.152
15.1
6
15.8
6.6
3.65
3.85
P011D
9/11
L7900AC
2
TO-263 (D PAK) MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
4.4
TYP.
MAX.
4.6
MIN.
0.173
0.098
0.027
0.044
0.017
0.048
0.352
0.393
0.192
0.590
0.050
0.055
MAX.
0.181
0.106
0.036
0.067
0.023
0.053
0.368
0.409
0.208
0.624
0.055
0.068
A
A1
B
2.49
0.7
2.69
0.93
1.7
B2
C
1.14
0.45
1.23
8.95
10
0.6
C2
D
1.36
9.35
10.4
5.28
15.85
1.4
E
G
4.88
15
L
L2
L3
1.27
1.4
1.75
D
A
C
C2
DETAIL”A”
DETAIL”A”
A1
B
B2
E
G
L3
L2
L
P011P6/F
10/11
L7900AC
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