MM78M18 Voltage Regulator Datasheet

MM78M18 Datasheet, PDF, Equivalent


Part Number

MM78M18

Description

3-Terminal 0.5A Positive Voltage Regulator

Manufacture

Fairchild

Total Page 14 Pages
Datasheet
Download MM78M18 Datasheet


MM78M18
www.fairchildsemi.com
MC78MXX/LM78MXX
3-Terminal 0.5A Positive Voltage Regulator
Features
• Output Current up to 0.5A
• Output Voltages of 5, 6, 8, 12, 15, 18, 24V
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area (SOA)Protection
Description
The MC78MXX/LM78MXX series of three-terminal
positive regulators are available in the TO-220/D-PAK
package with several fixed output voltages making it useful
in a wide range of applications.
TO-220
GND
1
D-PAK GND
1
1. Input 2. GND 3. Output
Internal Block Digram
INPUT
1
CURRENT
GENERATOR
STARTING
CIRCUIT
REFERENCE
VOLTAGE
SERIES
PASS
ELEMENT
SOA
PROTECTION
ERROR
AMPLIFIER
THERMAL
PROTECTION
©2002 Fairchild Semiconductor Corporation
OUTPUT
3
R1
R2
GND
2
Rev. 1.0.5

MM78M18
MC78MXX/LM78MXX
Absolute Maximum Ratings
Parameter
Input Voltage (for VO = 5V to 18V)
(for VO = 24V)
Thermal Resistance Junction-Case (Note1)
TO-220 (Tc = +25°C)
Thermal Resistance Junction-Air (Note1, 2)
TO-220 (Ta = +25°C)
D-PAK (Ta = +25°C)
Operating Junction Temperature Range
Storage Temperature Range
Note:
1. Thermal resistance test board
Size: 76.2mm * 114.3mm * 1.6mm(1S0P)
JEDEC standard: JESD51-3, JESD51-7
2. Assume no ambient airflow
Symbol
VI
VI
RθJC
RθJA
TOPR
TSTG
Value
35
40
2.5
66
92
0 ~ +150
-65 ~ +150
Unit
V
V
°C/W
°C/W
°C
°C
Electrical Characteristics (MC78M05/LM78M05)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33µF, CO=0.1µF)
Parameter
Output Voltage
Line Regulation (Note3)
Load Regulation (Note3)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Short Circuit Current
Peak Current
Symbol
VO
VO
VO
IQ
IQ
V/T
VN
RR
VD
ISC
IPK
Conditions
TJ = +25°C
IO = 5mA to 350mA
VI = 7V to 20V
IO = 200mA
TJ =+25°C
VI = 7V to 25V
VI = 8V to 25V
IO = 5mA to 0.5A, TJ =+25°C
IO = 5mA to 200mA, TJ =+25 °C
TJ =+25°C
IO = 5mA to 350mA
IO = 200mA
VI = 8V to 25V
IO = 5mA
TJ = 0 to +125°C
f = 10Hz to 100kHz
f = 120Hz, IO = 300mA
VI = 8V to 18V, TJ =+25 °C
TJ =+25°C, IO = 500mA
TJ =+25°C, VI = 35V
TJ =+25°C
Min.
4.8
4.75
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ. Max.
5 5.2
5 5.25
- 100
- 50
- 100
- 50
4.0 6.0
- 0.5
- 0.8
Unit
V
mV
mV
mA
mA
-0.5 - mV/°C
40 - µV/Vo
80 -
dB
2-
300 -
700 -
V
mA
mA
Note:
3. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
2


Features www.fairchildsemi.com MC78MXX/LM78MXX 3-Terminal 0.5A Positive Voltage Regula tor Features • • • • • Outpu t Current up to 0.5A Output Voltages of 5, 6, 8, 12, 15, 18, 24V Thermal Overl oad Protection Short Circuit Protection Output Transistor Safe Operating Area (SOA)Protection Description The MC78MX X/LM78MXX series of three-terminal posi tive regulators are available in the TO -220/D-PAK package with several fixed o utput voltages making it useful in a wi de range of applications. TO-220 GND 1 D-PAK GND 1 1. Input 2. GND 3. Out put Internal Block Digram INPUT 1 SE RIES PASS ELEMENT OUTPUT 3 CURRENT GE NERATOR SOA PROTECTION R1 STARTING C IRCUIT REFERENCE VOLTAGE ERROR AMPLIF IER R2 THERMAL PROTECTION GND 2 Rev. 1.0.5 ©2002 Fairchild Semiconductor C orporation MC78MXX/LM78MXX Absolute M aximum Ratings Parameter Input Voltage (for VO = 5V to 18V) (for VO = 24V) The rmal Resistance Junction-Case (Note1) T O-220 (Tc = +25°C) Thermal Resistance Junction-Air (Note1, 2) TO-220 (Ta =.
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