100mA POSITIVE VOLTAGE REGULATOR AS78LXX
Preliminary Datasheet
1
Feb. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
General Description
The AS78LXX series are three terminal positive regu-
lators designed for a wide variety of applications
including local, on-card regulation.
This series of regulators are complete with internal
current limiting, thermal shutdown protection, and
safe-area compensation which make them virtually
immune from output overload. If adequate heat sinking
are provided, these regulators can deliver output cur-
rents up to 100mA.
The AS78LXX series are available in TO-92 and SOT-
89-3 packages.
Features
Output Current up to 100mA
Fixed Output Voltages of 5V, 12V, 15V, 18V and
24V
Output Voltage Accuracy of
5% over the Full
Temperature Range
Internal Short Circuit Current Limiting
Internal Thermal Overload Protection
No External Components
Output Transistor Safe-area Protection
Applications
Consumer Electronics
Microprocessor Power Supply
Mother Board
Figure 1. Package Types of AS78LXX
TO-92
SOT-89-3
100mA POSITIVE VOLTAGE REGULATOR AS78LXX
Preliminary Datasheet
2
Feb. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Pin Configuration
Figure 2. Pin Configuration of AS78LXX (Top View)
Z Package
(TO-92)
INPUT
OUTPUT
GND
1
2
3
R
Package
(SOT-89-3)
INPUT
OUTPUT
GND
1
2
3
GND
100mA POSITIVE VOLTAGE REGULATOR AS78LXX
Preliminary Datasheet
3
Feb. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Functional Block Diagram
Figure 3. Functional Block Diagram of AS78LXX
R9
R7
R4
R3
R5
C1
R11
R19
R18
R14
R15
D1
Zener
R16
R17
R20
R23
R21
R2
2
OUTPUT
INPUT
R12
R2
R1
Q23
Q6
Q3
Q9
Q14
Q18
Q21
Q22
Q24
Q16
Q2
Q1
Q4
Q11
Q7
Q10
Q8
Q5
R8
R10
R6
R13
C2
Q12
Q15
Q13
Q17
Q19
Q20
GND
1
2
3
100mA POSITIVE VOLTAGE REGULATOR AS78LXX
Preliminary Datasheet
4
Feb. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Package
Temperature
Range
Part Number
Marking ID
Packing Type
Tin Lead
Lead Free
Tin Lead
Lead Free
TO-92
-40 to
125
o
C
AS78L05Z-E1
AS78L05Z-E1
Bulk
AS78L05ZTR-E1
AS78L05Z-E1
Ammo
AS78L12Z-E1
AS78L12Z-E1
Bulk
AS78L12ZTR-E1
AS78L12Z-E1
Ammo
AS78L15Z-E1
AS78L15Z-E1
Bulk
AS78L15ZTR-E1
AS78L15Z-E1
Ammo
AS78L18Z-E1
AS78L18Z-E1
Bulk
AS78L18ZTR-E1
AS78L18Z-E1
Ammo
AS78L24Z-E1
AS78L24Z-E1
Bulk
AS78L24ZTR-E1
AS78L24Z-E1
Ammo
SOT-89-3
-40 to
125
o
C
AS78L05RTR-E1
E78E
Tape & Reel
AS78L12RTR-E1
E78F
Tape & Reel
AS78L15RTR-E1
E78G
Tape & Reel
AS78L18RTR-E1
E78H
Tape & Reel
AS78L24RTR-E1
E78I
Tape & Reel
Ordering Information
Circuit Type
Package
E1: Lead Free
AS78LXX
TR: Tape & Reel or Ammo
Z: TO-92
-
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Output Voltage
05: 05V
12: 12V
Blank: Bulk
R: SOT-89-3
15: 15V
18: 18V
24: 24V
100mA POSITIVE VOLTAGE REGULATOR AS78LXX
Preliminary Datasheet
5
Feb. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Recommended Operating Conditions
Parameter
Symbol
Min
Max
Unit
Operating Junction Temperature Range
T
J
-40
125
o
C
Absolute Maximum Ratings (Note 1)
Parameter Symbol
Value
Unit
Input Voltage
V
IN
35
V
Lead Temperature (Soldering, 10sec)
T
LEAD
260
o
C
Power Dissipation
P
D
750
mW
Storage Temperature Range
T
STG
-65 to 150
o
C
ESD (Machine Model)
ESD
250
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max-
imum Ratings" for extended periods may affect device reliability.
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