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AP78L12
12V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Features
* * * * * * * * * * 12.0V output voltage with tolerances of 5% over the temperature range Output current in excess of 100mA Internal thermal overload protection Output transistor safe area protection Internal short circuit current limiting No external components Available in plastic TO92-3L and plastic SOP-8L low profile packages Lead-free Package: TO92-3L (Note 1) SOP-8L: Available in "Green" Molding Compound (No Br, Sb) (Note 2) Lead Free Finish / RoHS Compliant (Note 3)
General Description
The AP78L12 of three terminal positive regulators is available with fixed output voltages making them useful in a wide range of applications. These regulators can provide local on card regulation, eliminating the distribution problems associated with single point regulation. The voltages available allow the AP78L12 to be used in logic system, instrumentation, HiFi, and other solid state electronic equipment. The AP78L12 is available in the plastic TO92-3L package, the plastic SOP-8L package using industrial standard package technology. With adequate heat sinking the regulator can deliver 100mA output current. Current limiting is included to limit the peak output current to a safe value. Safe area protection for the output transistors is provided to limit internal power dissipation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.
Applications
Well suited for a wide range of applications, such as: * * * * Lighting Ballast STB Power supply Audio Equipment
Ordering Information
AP 78 L 12 X X X Package V : TO92-3L S : SOP-8L Lead Free L : Lead Free (Note 1) G : Green (Note 2) Packing -A : Ammo Box -13 : Taping
Note:
1. TO92-3L is available in "Lead Free" only. 2. SOP-8L is available in "Green" only. 3. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device AP78L12V AP78L12S
Note:
Package Packaging Code (Note 4) V S TO92-3L SOP-8L
Lead-free
Ammo Box / Tube Part Number Quantity Suffix 2000/Box -A NA NA
13" Tape and Reel Part Number Quantity Suffix NA NA 2500/Tape & Reel -13
4. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be on our website at http://www.diodes.com/datasheets/ap02001.pdf.
AP78L12 Rev. 1
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(c) Diodes Incorporated
AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Pin Assignments
(1) TO92-3L
(Bottom View) VOUT GND VIN
TO92-3L
(2) SOP-8L
(Top View)
VOUT GND GND NC
1 2 3 4 78L12
8 7 6 5
VIN GND GND NC
SOP-8L
AP78L12 Rev. 1
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(c) Diodes Incorporated
AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Pin Descriptions
Name VIN VOUT GND NC
Description Operating Voltage Input Voltage Output Pin Ground No Connection
Absolute Maximum Ratings
Symbol VCC VOUT TST TOP TMJ Parameter Supply Voltage Output Voltage to Ground Storage Temperature Operating Junction Temperature Maximum Junction Temperature Rating +30 12 -65 to +150 -20 to 125 150 Unit V V
o o o
C C C
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AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Electrical Characteristics
(All Output Voltage Versions)
Limits in standard typeface are for TA=25, Bold typeface applies over -20to 125 for SOP-8L and TO-92 Packages. Unless otherwise specified: VIN=19V, IO=40mA, CI=0.33F, CO=0.1F.
Symbol
Parameter
Conditions
Min. 11.5
Typ. 12
Max. 12.5 12.6
Unit
VO
Output Voltage
VO VO IQ IQ Vn
Line Regulation Load Regulation Quiescent Current Quiescent Current Change Output Noise Voltage
14.5VVIN27V 1mAIO40mA 1mAIO70mA 14.5VVIN27V 16VVIN27V 1mAIO100mA 1mAIO40mA 16VVIN27V 1mAIO40mA
11.4 11.4 30 20 30 10 3
V
12.6 180 110 100 50 5 1 0.1
mV mV mA V dB mA mV/ oC
80 f=120Hz 15VVIN25V 40 54 140 IO=5mA -1.0
VIN/VOUT Ripple Rejection IPK VO/T Peak Output Current Average Output Voltage Tempco Minimum Value of Input Voltage Required to Maintain Line Regulation Thermal Resistance Junction to Ambient Thermal Resistance Junction to case
VIN(Min)
13.7 TO92-3L (Note 5) SOP-8L (Note 6) TO92-3L (Note 5) SOP-8L (Note 6) 176 152 33 7
14.5
V
JA JC
Note:
o
C/W
5. Test conditions for TO92-3L: No heat sink, no air flow. 6. Test conditions for SOP-8L, TO92-3L: Device mounted on 2 oz. copper, minimum recommended pad layout, FB-4 PCB.
AP78L12 Rev. 1
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(c) Diodes Incorporated
AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Typical Performance Characteristics
Peak Output Current 300 VOUT=100mV OUTPUT CURRENT(mA) 250 200 TA=25 150 100 50 0 14 18 22 26 30 INPUT-OUTPUT DIFFERENTIAL(V)
3.2 3.1 Quiescent Current
INPUT-OUTPUT DIFFERENTIAL(V)
Quiescent Current 2.960
TA=-25
Quiescent Current(mA)
2.955 2.950 2.945 2.940 2.935 2.930 10 15 20 25 30 INPUT VOLTAGE(V)
2.1 1.9 1.7 1.5 1.3 1.1 0.9 0.7 0.5 -25
Droput Conditions V OUT=2% of VOUT I OUT=40mA I OUT=1mA I OUT=70mA DROPOUT VOLTAGE
TA=125
VOUT=12V I OUT=40mA TA=25
Quiescent Current(mA)
3.0 2.9 2.8 2.7 2.6 2.5 -25
VIN =19V VOUT=12V I OUT=40mA
0 25 50 75 100 125 JUNCTION TEMPERATURE( )
0
25
50
75
100 125
JUNCTION TEM PERATURE()
AP78L12 Rev. 1
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AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Typical Application Circuit
Fixed Output regulator
INPUT
IN
OUT
AP78L12
GND C2 0.1uF
OUTPUT
C1* 0.33uF
Required if the regulator is located more than 3" from the power supply filter.
Function Description
Introduction The AP78L12 fixed-mode 12V output voltage regulator is a three terminal device. The AP78L12 fixed voltage regulator series has built-in thermal overload protection which prevents the device from being damaged due to excessive junction temperature. The regulators also contain internal short-circuit protection which limits the maximum output current, and safe-area protection for the pass transistor which reduces the short-circuit current as the voltage across the pass transistor is increased.
AP78L12 Rev. 1
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(c) Diodes Incorporated
AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Marking Information
(1) TO92-3L
(Top View)
Part Number
L:Lead Free Package
AP78L12 Y WW X X
1
2
3
Internal code Xth Week: 01~52 Year: "1"=2001 "2"=2002
TO92-3L
(2) SOP-8L
(Top View)
8 Logo Part Number 5
AP78L12
G : Green Package
YY WW X X
Internal code Xth week: 01~52 Year: "01" =2001 "02" =2002
~
1 SOP-8L
4
Device
AP78L12S
Package
SOP8
Identification Code
AP78L12
AP78L12 Rev. 1
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(c) Diodes Incorporated
AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Package Information
(1) Package Type: TO92-3L
(unit: mm)
TO92-3L for Ammo pack
AP78L12 Rev. 1
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AP78L12
12.0V OUTPUT 3-TERMINAL POSITIVE REGULATORS
Package Information
(2) Package Type: SOP-8L
(Continued)
3.70/4.10
5.79/6.20
0.08/0.25
0.254 0.38/1.27
Gauge Plane Seating Plane
Detail "A"
7~9 1.30/1.50 1.75max. 0.20typ 7~9
0.35max. 45
Detail "A"
3.70/4.10
1.27typ 4.80/5.30
0.3/0.5
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
AP78L12 Rev. 1
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