Negative Regulator. 79L12 Datasheet

79L12 Regulator. Datasheet pdf. Equivalent

79L12 Datasheet
Recommendation 79L12 Datasheet
Part 79L12
Description 3-Terminal Negative Regulator
Feature 79L12; LM79L05AC is OBSOLETE www.ti.com LM79L05, LM79L12, LM79L12AC LM79L15, LM79L15AC SNOSBR8K – JULY 19.
Manufacture etcTI
Datasheet
Download 79L12 Datasheet




Texas Instruments 79L12
LM79L05AC is OBSOLETE
www.ti.com
LM79L05, LM79L12, LM79L12AC
LM79L15, LM79L15AC
SNOSBR8K – JULY 1999 – REVISED APRIL 2013
LM79LXXAC Series 3-Terminal Negative Regulators
Check for Samples: LM79L05, LM79L12, LM79L12AC, LM79L15, LM79L15AC
FEATURES
1
2 Preset Output Voltage Error is Less than ±5%
Over Load, Line and Temperature
• Specified at an Output Current of 100mA
• Easily Compensated with a Small 0.1μF Output
Capacitor
• Internal Short-Circuit, Thermal and Safe
Operating Area Protection
• Easily Adjustable to Higher Output Voltages
• Maximum Line Regulation Less than 0.07%
VOUT/V
• Maximum Load Regulation Less than 0.01%
VOUT/mA
• See AN-1112 (SNVA009) for DSBGA
Considerations
DESCRIPTION
The LM79LXXAC series of 3-terminal negative
voltage regulators features fixed output voltages of
5V, 12V, and 15V with output current capabilities
in excess of 100mA. These devices were designed
using the latest computer techniques for optimizing
the packaged IC thermal/electrical performance. The
LM79LXXAC series, when combined with a minimum
output capacitor of 0.1μF, exhibits an excellent
transient response, a maximum line regulation of
0.07% VO/V, and a maximum load regulation of
0.01% VO/mA.
The LM79LXXAC series also includes, as self-
protection circuitry: safe operating area circuitry for
output transistor power dissipation limiting, a
temperature independent short circuit current limit for
peak output current limiting, and a thermal shutdown
circuit to prevent excessive junction temperature.
Although designed primarily as fixed voltage
regulators, these devices may be combined with
simple external circuitry for boosted and/or adjustable
voltages and currents. The LM79LXXAC series is
available in the 3-lead TO package, the 8-lead SOIC
package, and the 6-Bump DSBGA package.
For output voltages other than the pre-set -5V, -12V
and -15V, the LM137L series provides an adjustable
output voltage range from -1.2V to -47V.
Typical Applications
*Required if the regulator is located far from the power supply filter.
A 1μF aluminum electrolytic may be substituted.
**Required for stability. A 1μF aluminum electrolytic may be
substituted.
Figure 1. Fixed Output Regulator
V0 = 5V (5V/R1 + IQ) • R2,
5V/R1 > 3 IQ
Figure 2. Adjustable Output Regulator
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated



Texas Instruments 79L12
LM79L05, LM79L12, LM79L12AC
LM79L15, LM79L15AC
SNOSBR8K – JULY 1999 – REVISED APRIL 2013
LM79L05AC is OBSOLETE
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Connection Diagram
-VOUT 1
-VIN 2
-VIN 3
NC 4
8 NC
7 -VIN
6 -VIN
5 GND
Pins labeled 'NC' on LM79LXXACM 8-Lead SOIC (pin 4 and pin 8) are Open, no internal connection.
Figure 3. 8-Lead SOIC Narrow (D)
Top View
Figure 4. 3–Lead TO-226 (LP)
Bottom View
GND
-VOUT
-VIN
A2
B2
C2
A1
B1
C1
GND
-VOUT
-VIN
Figure 5. 6-Bump DSBGA
Top View (Bump Side Down)
2
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Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LM79L05 LM79L12 LM79L12AC LM79L15 LM79L15AC



Texas Instruments 79L12
www.ti.com
LM79L05AC is OBSOLETE
LM79L05, LM79L12, LM79L12AC
LM79L15, LM79L15AC
SNOSBR8K – JULY 1999 – REVISED APRIL 2013
Absolute Maximum Ratings(1)(2)
Input Voltage
VO = 5V, 12V, 15V
Internal Power Dissipation (3)
Operating Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature
(Soldering, 10 sec.)
35V
Internally Limited
0°C to +70°C
+125°C
55°C to +150°C
260°C
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) Thermal resistance of TO-226 (LP) package is 60°C/W θJC, 232°C/W θJA at still air, and 88°C/W at 400 ft/min of air. The θJA of the
LM78LXX in the 6-Bump DSBGA package is 114°C/W when mounted on a 4-Layer JEDEC test board (JESD 51-7). The θJA of the
LM78LXX in the SOIC-8 (D) package is 180°C/W in still air. The maximum junction temperature shall not exceed 125°C on electrical
parameters.
Electrical Characteristics (1)
TA = 0°C to +70°C unless otherwise noted.
Output Voltage
Input Voltage (unless otherwise noted)
Symbol Parameter
Conditions
TJ = 25°C, IO = 100mA
VO
Output
Voltage
1mA IO 100mA
VMIN VIN VMAX
1mA IO 40mA
ΔVO
ΔVO
ΔVO
Line
Regulation
Load
Regulation
Long Term
Stability
VMIN VIN VMAX
TJ = 25°C, IO = 100mA
VMIN VIN VMAX
TJ = 25°C, IO = 40mA
VMIN VIN VMAX
TJ = 25°C
1mA IO 100mA
IO = 100mA
IQ
Quiescent
Current
IO = 100mA
Quiescent
ΔIQ Current
Change
1mA IO 100mA
1mA IO 40mA
IO = 100mA
VMIN VIN VMAX
Vn
Output Noise TJ = 25°C, IO = 100mA
Voltage
f = 10Hz 10kHz
ΔVIN/ΔVO
Ripple
Rejection
TJ = 25°C, IO = 100mA
f = 120Hz
Input Voltage
Required to
TJ = 25°C, IO = 100mA
Maintain Line
Regulation
IO = 40mA
5V
10V
Min Typ Max
5.2 5 4.8
Min
12.5
12V
17V
Typ
12
Max
11.5
5.25
4.75 12.6
11.4
(20 VIN ≤ −7.5)
(27 VIN ≤ −14.8)
5.25
4.75 12.6
11.4
(20 VIN ≤ −7)
60
(20 VIN ≤ −7.3)
60
(20 VIN ≤ −7)
50
(27 VIN ≤ −14.5)
45
(27 VIN ≤ −14.6)
45
(27 VIN ≤ −14.5)
100
15V
20V
Min Typ Max
15.6 15 14.4
15.7
5
14.25
(30 VIN ≤ −18)
15.7
5
14.25
(30 VIN ≤ −17.5)
45
(30 VIN ≤ −17.7)
45
(30 VIN ≤ −17.5)
125
Units
V
mV
V
mV
V
mV
20
48
2
6
2
6
0.3
0.1
0.25
(20 VIN ≤ −7.5)
0.3
0.1
0.25
(27 VIN ≤ −14.8)
40
96
60
2
6
0.3
0.1
0.25
(30 VIN ≤ −18)
120
mV/kh
rs
mA
mA
mA
V
μV
50
52
50
dB
7.3
14.6
17.7
V
7.0
14.5
17.5
V
(1) To ensure constant junction temperature, low duty cycle pulse testing is used.
Copyright © 1999–2013, Texas Instruments Incorporated
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3
Product Folder Links: LM79L05 LM79L12 LM79L12AC LM79L15 LM79L15AC







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