L7912ACV STMicroelectronics, L7912ACV Datasheet

IC REG NEGATIVE 12V TO-220

L7912ACV

Manufacturer Part Number
L7912ACV
Description
IC REG NEGATIVE 12V TO-220
Manufacturer
STMicroelectronics
Datasheet

Specifications of L7912ACV

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)
Polarity
Negative
Number Of Outputs
1
Output Type
Fixed
Output Voltage
- 12 V
Output Current
500 mA
Line Regulation
240 mV
Load Regulation
240 mV
Dropout Voltage (max)
1.1 V
Input Voltage Max
- 19 V
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
0 C
Mounting Style
Through Hole
Voltage Regulation Accuracy
2 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-1475-5

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Features
Description
The L79xxAC 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 L78xxA 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.
November 2010
Output current to 1.5 A
Output voltages of -5; -12; -15 V
Thermal overload protection
Short circuit protection
Output transition SOA protection
Part numbers
L7905AC
L7912AC
L7915AC
Device summary
L7905ACV
L7912ACV
L7915ACV
TO-220
Doc ID 2150 Rev 11
Order codes
2 % negative voltage regulators
L7905ACD2T-TR
D²PAK
TO-220
L79xxAC
Output voltages
D²PAK
-12 V
-15 V
-5 V
www.st.com
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L7912ACV Summary of contents

Page 1

... Table 1. Device summary Part numbers L7905AC L7912AC L7915AC November 2010 2 % negative voltage regulators Order codes TO-220 L7905ACV L7905ACD2T-TR L7912ACV L7915ACV Doc ID 2150 Rev 11 L79xxAC TO-220 D²PAK Output voltages D²PAK - 1/22 www.st.com 22 ...

Page 2

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

Page 3

L79xxAC 1 Diagram Figure 1. Schematic diagram Doc ID 2150 Rev 11 Diagram 3/22 ...

Page 4

Pin configuration 2 Pin configuration Figure 2. Pin connections (top view) TO-220 4/22 Doc ID 2150 Rev 11 L79xxAC D²PAK ...

Page 5

L79xxAC 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 ...

Page 6

Application 4 Application Figure 3. Application circuit 6/22 Doc ID 2150 Rev 11 L79xxAC ...

Page 7

L79xxAC 5 Electrical characteristics Refer to the test circuits, T unless otherwise specified. Table 4. Electrical characteristics of L7905AC Symbol Parameter V Output voltage O V Output voltage O ΔV (1) Line regulation O ΔV (1) Load regulation O I ...

Page 8

Electrical characteristics Refer to the test circuits, T unless otherwise specified. Table 5. Electrical characteristics of L7912AC 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

L79xxAC Refer to the test circuits, T unless otherwise specified. Table 6. Electrical characteristics of L7915AC 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 10

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 ...

Page 11

L79xxAC Figure 6. Circuit for increasing output voltage )/ > Optional for improved transient response and ripple rejection. Figure 7. High current negative regulator ...

Page 12

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 ...

Page 13

L79xxAC Figure 8. Drawing dimension TO-220 (type STD-ST Dual Gauge) Doc ID 2150 Rev 11 Package mechanical data 0015988_S 13/22 ...

Page 14

Package mechanical data Figure 9. Drawing dimension TO-220 (type STD-ST Single Gauge) 14/22 Doc ID 2150 Rev 11 L79xxAC 8174627_B ...

Page 15

L79xxAC Figure 10. Drawing dimension tube for TO-220 Dual Gauge (mm.) Figure 11. Drawing dimension tube for TO-220 Single Gauge (mm.) Doc ID 2150 Rev 11 Package mechanical data 15/22 ...

Page 16

Package mechanical data Figure 12. Drawing dimension D²PAK (type STD-ST) 16/22 Doc ID 2150 Rev 11 L79xxAC 0079457/L ...

Page 17

L79xxAC Figure 13. Drawing dimension D²PAK (type WOOSEOK-subcon.) Doc ID 2150 Rev 11 Package mechanical data 0079457/L 17/22 ...

Page 18

Package mechanical data Table 8. 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 ...

Page 19

L79xxAC Figure 14. D²PAK footprint recommended data Table 9. Footprint data Dim Values mm. 12.20 9.75 16.90 3.50 1.60 2.54 5.08 Doc ID 2150 Rev 11 Package mechanical data inch. 0.480 0.384 0.665 ...

Page 20

Package mechanical data 2 Tape & reel D PAK-P Dim. Min 12 10.50 Bo 15.70 Ko 4.80 Po 3.9 P 11.9 20/ PAK-D PAK/A-P PAK/A mechanical data mm. Typ. ...

Page 21

L79xxAC 8 Revision history Table 10. Document revision history Date Revision 22-Jun-2004 7 12-Dec-2007 8 18-Feb-2008 9 28-Jan-2010 10 12-Nov-2010 11 Order codes updated. Added: Table 1. Modified: Table 1 on page 1. Modified: Table 7 on page 12, Figure ...

Page 22

... 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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