L7912C-V STMicroelectronics, L7912C-V Datasheet

IC REG NEG 1.5A 12V TO-220

L7912C-V

Manufacturer Part Number
L7912C-V
Description
IC REG NEG 1.5A 12V TO-220
Manufacturer
STMicroelectronics
Datasheet

Specifications of L7912C-V

Regulator Topology
Negative Fixed
Voltage - Output
-12V
Voltage - Input
Down to -35V
Voltage - Dropout (typical)
1.1V @ 1A
Number Of Regulators
1
Current - Output
1.5A
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Features
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.
Table 1.
1.
November 2010
Part numbers
Output current up to 1.5 A
Output voltages of -5; -8; -12; -15; -20 V
Thermal overload protection
Short circuit protection
Output transition SOA protection
Available on request.
L7905C
L7908C
L7912C
L7915C
L7920C
Device summary
TO-220 (A type)
L7905CV
L7908CV
L7912CV
L7915CV
Doc ID 2149 Rev 19
L7920CD2T-TR
L7905CD2T-TR
L7912CD2T-TR
L7915CD2T-TR
Order codes
D²PAK
(1)
Negative voltage regulators
TO-220
TO-220FP
L7905CP
L7912CP
L7915CP
D²PAK
TO-220FP
L79xxC
voltages
Output
-12 V
-15 V
-20 V
-5 V
-8 V
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L7912C-V Summary of contents

Page 1

... L7905C L7905CV L7908C L7908CV L7912C L7912CV L7915C L7915CV L7920C 1. Available on request. November 2010 Negative voltage regulators TO-220 Order codes D²PAK L7905CD2T-TR L7912CD2T-TR L7915CD2T-TR (1) L7920CD2T-TR Doc ID 2149 Rev 19 L79xxC TO-220FP D²PAK Output voltages TO-220FP L7905CP - L7912CP -12 V L7915CP -15 V -20 V 1/25 www.st.com 25 ...

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Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

L79xxC 1 Diagram Figure 1. Schematic diagram Doc ID 2149 Rev 19 Diagram 3/25 ...

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Pin configuration 2 Pin configuration Figure 2. Pin connections (top view) TO-220 4/25 D²PAK (any type) Doc ID 2149 Rev 19 L79xxC TO220FP ...

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L79xxC 3 Maximum ratings Table 2. Absolute maximum ratings Symbol V DC input voltage I I Output current O P Power dissipation D T Storage temperature range STG T Operating junction temperature range OP Note: Absolute maximum ratings are those ...

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Test circuit 4 Test circuit Figure 3. Test circuit 6/25 Doc ID 2149 Rev 19 L79xxC ...

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L79xxC 5 Electrical characteristics Refer to the test circuits, T unless otherwise specified. Table 4. Electrical characteristics of L7905C Symbol Parameter V Output voltage O V Output voltage O ΔV (1) Line regulation O ΔV (1) Load regulation O I ...

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Electrical characteristics Refer to the test circuits, T unless otherwise specified. Table 5. Electrical characteristics of L7908C Symbol Parameter V Output voltage O V Output voltage O ΔV (1) Line regulation O ΔV (1) Load regulation O I Quiescent current ...

Page 9

... L79xxC Refer to the test circuits, T unless otherwise specified. Table 6. Electrical characteristics of L7912C Symbol Parameter V Output voltage O V Output voltage O ΔV (1) Line regulation O ΔV (1) Load regulation O I Quiescent current d ΔI Quiescent current change d ΔV /ΔT Output voltage drift O eN Output noise voltage ...

Page 10

Electrical characteristics Refer to the test circuits, T unless otherwise specified. Table 7. Electrical characteristics of L7915C Symbol Parameter V Output voltage O V Output voltage O ΔV (1) Line regulation O ΔV (1) Load regulation O I Quiescent current ...

Page 11

L79xxC Refer to the test circuits, T unless otherwise specified. Table 8. Electrical characteristics of L7920C Symbol Parameter V Output voltage O V Output voltage O ΔV (1) Line regulation O ΔV (1) Load regulation O I Quiescent current d ...

Page 12

Application information 6 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 ...

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L79xxC Figure 6. Circuit for increasing output voltage )/ > Optional for improved transient response and ripple rejection. Figure 7. High current negative regulator ...

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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 ...

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L79xxC Figure 8. Drawing dimension TO-220 (type STD-ST Dual Gauge) Doc ID 2149 Rev 19 Package mechanical data 0015988_S 15/25 ...

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Package mechanical data Figure 9. Drawing dimension TO-220 (type STD-ST Single Gauge) 16/25 Doc ID 2149 Rev 19 L79xxC 8174627_B ...

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L79xxC Figure 10. Drawing dimension tube for TO-220 Dual Gauge (mm) Figure 11. Drawing dimension tube for TO-220 Single Gauge (mm) Doc ID 2149 Rev 19 Package mechanical data 17/25 ...

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Package mechanical data Dim. Min. A 4.40 B 2.5 D 2.5 E 0.45 F 0.75 F1 1.15 F2 1.15 G 4.95 G1 2 28.6 L4 9.8 L5 2 DIA. 3 18/25 TO-220FP ...

Page 19

L79xxC Figure 12. Drawing dimension D²PAK (type STD-ST) Doc ID 2149 Rev 19 Package mechanical data 0079457/L 19/25 ...

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Package mechanical data Figure 13. Drawing dimension D²PAK (type WOOSEOK-subcon.) 20/25 Doc ID 2149 Rev 19 L79xxC 0079457/L ...

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L79xxC Table 10. D²PAK mechanical data Dim. Min. A 4.40 A1 0.03 b 0.70 b2 1.14 c 0.45 c2 1.23 D 8. 2.49 L 2.29 L1 1.27 L2 ...

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Package mechanical data Figure 14. D²PAK footprint recommended data Table 11. Footprint data Dim 22/25 Values mm. 12.20 9.75 16.90 3.50 1.60 2.54 5.08 Doc ID 2149 Rev 19 L79xxC inch. 0.480 0.384 ...

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L79xxC 2 Tape & reel D PAK-P Dim. Min 12 10.50 Bo 15.70 Ko 4.80 Po 3 PAK-D PAK/A-P PAK/A mechanical data mm. Typ. Max. 180 13.0 ...

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Revision history 8 Revision history Table 12. Document revision history Date Revision 22-Jun-2004 9 31-Aug-2005 10 19-Jan-2007 11 06-Jun-2007 12 25-Oct-2007 13 05-Dec-2007 14 18-Feb-2008 15 15-Jul-2008 16 19-Jan-2010 17 26-May-2010 18 12-Nov-2010 19 24/25 Order codes updated Table 3. ...

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... L79xxC Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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