PD78M series
3-Terminal Positive Linear Regulator
Description
The PD78M series are monolithic integrated circuits designed as fixed-voltage regulators 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 is provided, these regulators can deliver output currents up to 0.5A.
The PD78M series are available in two standard plastic packages: TO-220-3 and TO-252-2 (1).
Feature
Output current up to 500mA
Fixed output voltages of 5V,6V,8V,9V and 12V
Output Voltage tolerances of
±5%
over the full
temperature range
Internal short circuit current-limiting
Internal thermal overload protection
No external components
Pb-free
Application
Consumer Electronics
Microprocessor power supply
Mother board I/O power supply
TO-220-3
TO-252
Figure 1. Package Types of the PD78M series
Naming Rule
PD
Prisemi Device
78 Series
L: I
OUT
=100mA
M: I
OUT
=500mA
7805: I
OUT
=1A
78 M
05
T
Package:
T:TO-220-3
D:TO-252
V
OUT
05:5V
06:6V
08:8V
09:9V
12:12V
Rev.06
1
www.prisemi.com
3-Terminal Positive Linear Regulator
T Package
(TO-220-3)
D Package
(TO-252)
PD78M series
(1)
(3)
Input GND Output
(1)
(3)
Input GND Output
Figure 2. Pin Configuration of the PD78M series
Absolute maximum rating (Note 1)
Parameter
Input Voltage
Operating Junction temperature range
Lead Temperature (Soldering, 10sec)
Power Dissipation
Storage Temperature Range
Thermal Resistance
ESD (Human Body Model)
ESD (Machine Model)
Symbol
V
IN
T
J
T
LEAD
P
D
T
STG
Value
35
150
260
Internally Limited
-65 to 150
TO-220
TO-252
2500
2500
60
100
Units
V
°C
°C
W
°C
ºC/W
V
V
θ
JC
ESD
ESD
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 Maximum Ratings" for extended periods
may affect device reliability.
Rev.06
2
www.prisemi.com
3-Terminal Positive Linear Regulator
Pin Description
Pin Number
1
2
3
PD78M series
Pin Name
Input
GND
Output
Function
Voltage Input
Ground
Voltage Output
Functional Block Diagram
Input
Output
GND
Figure 3. Functional Block Diagram of the PD78M series
Rev.06
3
www.prisemi.com
3-Terminal Positive Linear Regulator
Electrical Characteristics
PD78M series
PD78M05
(V
IN
=10V, I
OUT
=350mA, C
IN
=0.33uF,C
OUT
=0.33uF,T =-40ºC to 125 ºC, P
D
≤
5W, unless
otherwise noted)
Parameter
Symbol
Conditions
T
J
=25ºC
Output Voltage
V
OUT
7.0V≤V
IN
≤20V
5.0mA≤I
OUT
≤350mA
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
V
RLINE
V
RLOAD
I
Q
△I
Q
N
O
7.0V≤V
I
≤25V,I
OUT
=200mA
5.0mA≤I
O
≤500mA
I
OUT
=0
8.0V≤V
I
≤25V,
I
OUT
=200mA
5.0mA≤I
O
≤350mA
10Hz
≤
f
≤
100kHz
f=120Hz,8.0V≤V
I
≤20V
Ripple Rejection
PSRR
I
OUT
=200mA
18.5V≤V
I
≤28.5V
Peak Output Current
Short Circuit Current
Dropout Voltage
I
PK
I
SC
V
IN
-V
OUT
V
IN
=35V
△V
OUT
=1%
700
50
2
mA
mA
V
62
73
-
dB
-
40
Min.
4.8
4.75
-
-
-
Typ.
5
5
3
20
3.2
Max.
5.2
Unit
V
5.25
100
100
6
0.8
0.5
-
mV
mV
mA
mA
uV
Rev.06
4
www.prisemi.com
3-Terminal Positive Linear Regulator
otherwise noted)
Parameter
Symbol
Conditions
T
J
=25ºC
Output Voltage
V
OUT
8.0V≤V
IN
≤21V
5.0mA≤I
OUT
≤350mA
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
V
RLINE
V
RLOAD
I
Q
△I
Q
N
O
8.0V≤V
I
≤25V,I
OUT
=200mA
5.0mA≤I
O
≤500mA
I
OUT
=0
9.0V≤V
I
≤25V,
I
OUT
=200mA
5.0mA≤I
O
≤350mA
10Hz
≤
f
≤
100kHz
f=120Hz,8.0V≤V
I
≤20V
Ripple Rejection
PSRR
I
OUT
=200mA
18.5V≤V
I
≤28.5V
Peak Output Current
Short Circuit Current
Dropout Voltage
I
PK
I
SC
V
IN
-V
OUT
V
IN
=35V
△V
OUT
=1%
62
-
PD78M series
PD78M06
(V
IN
=11V, I
OUT
=350mA, C
IN
=0.33uF,C
OUT
=0.33uF,T =-40ºC to 125 ºC, P
D
≤
5W, unless
Min.
5.75
5.7
-
-
-
Typ.
6
6
5
20
3.2
Max.
6.25
Unit
V
6.3
100
120
6
0.8
0.5
45
-
mV
mV
mA
mA
uV
73
-
dB
700
50
2
mA
mA
V
Rev.06
5
www.prisemi.com
电子工程世界
电源技术
