L7905CV-DG [STMICROELECTRONICS]
Negative voltage regulators; 负稳压器
| 型号： | L7905CV-DG |
| 厂家： | 
ST |
| 描述： | Negative voltage regulators |
| 文件： | 总24页 (文件大小：465K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
L79xxC
Negative voltage regulators
Datasheet − production data
Features
■ Output current up to 1.5 A
■ Output voltages of - 5; - 8; - 12; - 15 V
■ Thermal overload protection
■ Short circuit protection
■ Output transition SOA protection
TO-220
TO-220FP
Description
The L79xxC series of three-terminal negative
regulators is available in TO-220, TO-220FP and
D²PAK packages and several fixed output
voltages, making it useful in a wide range of
applications. 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 L78xx positive standard series, they are
particularly suited for split power supplies. If
adequate heat sinking is provided, they can
deliver over 1.5 A output current. Although
designed primarily as fixed voltage regulators,
these devices can be used with external
components to obtain adjustable voltages and
currents.
D²PAK
Table 1.
Device summary
Order codes
Output
voltages
Part numbers
TO-220
L7905CV-DG (1)
D²PAK
TO-220FP
L7905C
L7908C
L7912C
L7915C
L7905CV
L7908CV
L7912CV
L7915CV
L7905CD2T-TR
L7905CP
- 5 V
- 8 V
L7908CV-DG (1)
L7912CV-DG (1)
L7915CV-DG (1)
L7912CD2T-TR
L7915CD2T-TR
L7912CP
L7915CP
- 12 V
- 15 V
1. TO-220 Dual Gauge frame.
May 2012
Doc ID 2149 Rev 21
1/24
This is information on a product in full production.
www.st.com
24
Contents
L79xxC
Contents
1
2
3
4
5
6
7
8
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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L79xxC
1
Diagram
Diagram
Figure 1.
Schematic diagram
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Pin configuration
L79xxC
2
Pin configuration
Figure 2.
Pin connections (top view)
TO-220
TO220FP
D²PAK (any type)
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L79xxC
Maximum ratings
3
Maximum ratings
Table 2.
Symbol
Absolute maximum ratings
Parameter
Value
Unit
for VO = - 5 to - 18 V
for VO = - 20 to - 24 V
-35
-40
VI
DC input voltage
V
IO
PD
Output current
Internally limited
Internally limited
-65 to 150
Power dissipation
TSTG
TOP
Storage temperature range
Operating junction temperature range
°C
°C
0 to 150
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 3.
Symbol
Thermal data
Parameter
D²PAK
TO-220
TO-220FP
Unit
RthJC
RthJA
Thermal resistance junction-case
Thermal resistance junction-ambient
3
5
5
°C/W
°C/W
62.5
50
60
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Test circuit
4
L79xxC
Test circuit
Figure 3.
Test circuit
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L79xxC
Electrical characteristics
5
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 °C, VI = -10 V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF
unless otherwise specified.
Table 4.
Symbol
Electrical characteristics of L7905C
Parameter
Output voltage
Test conditions
Min.
Typ.
Max.
Unit
VO
VO
TJ = 25°C
-4.8
-5
-5.2
V
IO = -5 mA to -1 A, PO ≤ 15 W
Output voltage
Line regulation
-4.75
-5
-5.25
V
VI = -8 to -20 V
VI = -7 to -25 V, TJ = 25°C
VI = -8 to -12 V, TJ = 25°C
IO = 5 mA to 1.5 A, TJ = 25°C
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
100
50
(1)
ΔVO
mV
100
50
(1)
ΔVO
Load regulation
mV
mA
mA
Id
Quiescent current
3
I
O = 5 mA to 1 A
0.5
1.3
ΔId
Quiescent current change
VI = -8 to -25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.4
100
60
mV/°C
µV
dB
V
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B = 10Hz to 100kHz, TJ = 25°C
ΔVI = 10 V, f = 120Hz
IO = 1 A, TJ = 25°C, ΔVO = 100 mV
54
1.4
2.1
Isc
Short circuit current
A
1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be
O
taken into account separately. Pulse testing with low duty cycle is used.
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Electrical characteristics
L79xxC
Refer to the test circuits, TJ = 0 to 125 °C, VI = -14 V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF
unless otherwise specified.
Table 5.
Symbol
Electrical characteristics of L7908C
Parameter
Output voltage
Test conditions
Min.
Typ.
Max.
Unit
VO
VO
TJ = 25°C
-7.7
-8
-8.3
V
I
O = -5 mA to -1 A, PO ≤ 15 W
Output voltage
Line regulation
-7.6
-8
-8.4
V
VI = -11.5 to -23 V
VI = -10.5 to -25 V, TJ = 25°C
VI = -11 to -17 V, TJ = 25°C
160
80
160
80
3
(1)
ΔVO
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = -11.5 to -25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.6
175
60
mV/°C
µV
dB
V
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B = 10Hz to 100kHz, TJ = 25°C
ΔVI = 10 V, f = 120Hz
IO = 1 A, TJ = 25°C, ΔVO = 100 mV
54
1.1
1.5
Isc
Short circuit current
A
1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be
O
taken into account separately. Pulse testing with low duty cycle is used.
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L79xxC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 °C, VI = -19 V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF
unless otherwise specified.
Table 6.
Symbol
Electrical characteristics of L7912C
Parameter
Output voltage
Test conditions
Min.
Typ.
Max.
Unit
VO
VO
TJ = 25°C
-11.5
-12
-12.5
V
I
O = -5 mA to -1 A, PO ≤ 15 W
Output voltage
Line regulation
-11.4
-12
-12.6
V
VI = -15.5 to -27 V
VI = -14.5 to -30 V, TJ = 25°C
VI = -16 to -22 V, TJ = 25°C
240
120
240
120
3
(1)
ΔVO
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = -15 to -30 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.8
200
60
mV/°C
µV
dB
V
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B = 10Hz to 100kHz, TJ = 25°C
ΔVI = 10 V, f = 120Hz
IO = 1 A, TJ = 25°C, ΔVO = 100 mV
54
1.1
1.5
Isc
Short circuit current
A
1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be
O
taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2149 Rev 21
9/24
Electrical characteristics
L79xxC
Refer to the test circuits, TJ = 0 to 125 °C, VI = -23 V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF
unless otherwise specified.
Table 7.
Symbol
Electrical characteristics of L7915C
Parameter
Output voltage
Test conditions
Min.
Typ.
Max.
Unit
VO
VO
TJ = 25°C
-14.4
-15
-15.6
V
I
O = -5 mA to -1 A, PO ≤ 15 W
Output voltage
Line regulation
-14.3
-15
-15.7
V
VI = -18.5 to -30 V
VI = -17.5 to -30 V, TJ = 25°C
VI = -20 to -26 V, TJ = 25°C
300
150
300
150
3
(1)
ΔVO
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = -18.5 to -30 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.9
250
60
mV/°C
µV
dB
V
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B = 10Hz to 100kHz, TJ = 25°C
ΔVI = 10 V, f = 120Hz
IO = 1 A, TJ = 25°C, ΔVO = 100 mV
54
1.1
1.3
Isc
Short circuit current
A
1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be
O
taken into account separately. Pulse testing with low duty cycle is used.
10/24
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L79xxC
6
Application information
Application information
Figure 4.
Fixed output regulator
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 electrolytic 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 5.
Split power supply ( 15 V - 1 A)
(*) Against potential latch-up problems.
Doc ID 2149 Rev 21
11/24
Application information
L79xxC
Figure 6.
Circuit for increasing output voltage
VO=VXX(R1+R2)/R2
GND
IN
OUT
VXX/R2 > 3Id
C3 Optional for improved transient response and ripple rejection.
Figure 7.
High current negative regulator (- 5 V / 4 A with 5 A current limiting)
IN
OUT
GND
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L79xxC
Package mechanical data
7
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Table 8.
TO-220 mechanical data
Type STD - ST Dual Gauge
Type STD - ST Single Gauge
mm.
Dim.
mm.
Typ.
Min.
Max.
Min.
Typ.
Max.
A
b
4.40
0.61
1.14
0.48
4.60
0.88
1.70
0.70
15.75
4.40
0.61
1.14
0.48
15.25
4.60
0.88
1.70
0.70
15.75
b1
c
D
15.25
D1
E
1.27
10.00
2.40
4.95
1.23
6.20
2.40
13.00
3.50
10.40
2.70
5.15
1.32
6.60
2.72
14.00
3.93
10.00
2.40
4.95
0.51
6.20
2.40
13.00
3.50
10.40
2.70
5.15
0.60
6.60
2.72
14.00
3.93
e
e1
F
H1
J1
L
L1
L20
L30
∅P
Q
16.40
28.90
16.40
28.90
3.75
2.65
3.85
2.95
3.75
2.65
3.85
2.95
Note:
In spite of some difference in tolerances, the packages are compatible.
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Package mechanical data
L79xxC
Figure 8.
Drawing dimension TO-220 (type STD-ST Dual Gauge)
0015988_S
14/24
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L79xxC
Package mechanical data
Figure 9.
Drawing dimension TO-220 (type STD-ST Single Gauge)
8174627_B
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Package mechanical data
L79xxC
Figure 10. Drawing dimension tube for TO-220 Dual Gauge (mm)
Figure 11. Drawing dimension tube for TO-220 Single Gauge (mm)
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Doc ID 2149 Rev 21
L79xxC
Package mechanical data
TO-220FP mechanical data
mm.
inch.
Dim.
Min.
4.40
2.5
Typ
Max.
4.60
2.7
Min.
Typ.
Max.
0.181
0.106
0.108
0.027
0.039
0.059
0.059
0.204
0.106
0.409
A
B
0.173
0.098
0.098
0.017
0.030
0.045
0.045
0.194
0.094
0.393
D
2.5
2.75
0.70
1
E
0.45
0.75
1.15
1.15
4.95
2.4
F
F1
F2
G
1.50
1.50
5.2
G1
H
2.7
10.0
10.40
L2
L3
L4
L5
L6
L7
DIA.
16
0.630
28.6
9.8
2.9
15.9
9
30.6
10.6
3.6
1.126
0.385
0.114
0.626
0.354
0.118
1.204
0.417
0.142
0.645
0.366
0.126
16.4
9.3
3
3.2
7012510A-H
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Package mechanical data
L79xxC
Figure 12. Drawing dimension D²PAK (type STD-ST)
0079457/L
18/24
Doc ID 2149 Rev 21
L79xxC
Package mechanical data
Figure 13. Drawing dimension D²PAK (type WOOSEOK-subcon.)
0079457/L
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19/24
Package mechanical data
L79xxC
Table 9.
D²PAK mechanical data
Type STD-ST
mm.
Type WOOSEOK-subcon.
Dim.
mm.
Typ.
Min.
Typ.
Max.
Min.
Max.
A
A1
b
4.40
0.03
0.70
1.14
0.45
1.23
8.95
7.50
10
4.60
0.23
0.93
1.70
0.60
1.36
9.35
4.30
0
4.70
0.20
0.90
1.37
0.60
1.40
9.40
0.70
1.17
0.45
1.25
9
b2
c
0.50
1.30
9.20
c2
D
D1
E
7.50
9.80
7.50
10.40
10.20
E1
e
8.50
2.54
2.54
5.08
e1
H
4.88
15
5.28
15.85
2.69
2.79
1.40
1.75
15
2.20
1.79
1
15.30
15.60
2.60
2.79
1.40
1.60
J1
L
2.49
2.29
1.27
1.30
L1
L2
R
1.20
0.4
0.30
V2
0°
8°
0°
3°
Note:
The D²PAK package coming from the subcontractor WOOSEOK is fully compatible with the
ST's package suggested footprint.
20/24
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L79xxC
Package mechanical data
Figure 14. D²PAK footprint recommended data
Table 10. Footprint data
Values
Dim.
mm.
inch.
A
B
C
D
E
F
12.20
9.75
16.90
3.50
1.60
2.54
5.08
0.480
0.384
0.665
0.138
0.063
0.100
0.200
G
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Package mechanical data
L79xxC
Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data
mm.
Typ.
inch.
Typ.
Dim.
Min.
Max.
180
Min.
Max.
A
7.086
0.519
C
D
12.8
20.2
60
13.0
13.2
0.504
0.795
2.362
0.512
N
T
14.4
10.70
15.90
5.00
4.1
0.567
0.421
0.626
0.197
0.161
0.476
Ao
Bo
Ko
Po
P
10.50
15.70
4.80
3.9
10.6
15.80
4.90
4.0
0.413
0.618
0.189
0.153
0.468
0.417
0.622
0.193
0.157
0.472
11.9
12.0
12.1
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L79xxC
Revision history
8
Revision history
Table 11. Document revision history
Date
Revision
Changes
22-Jun-2004
31-Aug-2005
19-Jan-2007
06-Jun-2007
25-Oct-2007
05-Dec-2007
18-Feb-2008
15-Jul-2008
9
Order codes updated Table 3.
10
11
12
13
14
15
16
Add new order codes (TO-220 E Type) on Table 3.
D²PAK mechanical data updated and add footprint data.
Order codes updated.
Modified: Figure 3, Figure 4, Figure 6 and Figure 7.
Modified: Table 1.
Modified: Table 1 on page 1.
Modified: Table 1 on page 1.
Modified: Table 8 on page 13, added: Figure 8 on page 14, Figure 9 on
page 15, Figure 10 and Figure 11 on page 16.
19-Jan-2010
17
26-May-2010
12-Nov-2010
18
19
Modified: VI parameter Table 2 on page 5.
Modified: RthJC value for TO-220 Table 3 on page 5.
Added: order codes L7905CV-DG, L7912CV-DG and L7915CV-DG Table 1 on
page 1.
18-Nov-2011
15-May-2012
20
21
Added: order codes L7908CV-DG Table 1 on page 1.
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L79xxC
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