• Output Voltages of 5V
• Output Current up to 1A
The 78MXX series of three-terminal
Features
• Thermal Overload Prot ection
• Short Circuit Protectio n
• Ou tput Transis tor Sa fe Operating Area (S O A)Protection
Description
package with several fixed output voltages making it useful
in a wide range of applications.
TO-252
1. Input 2. GND 3. Outpu t
1
GND
Internal Block Digr am
OUTPUT
3
R1
R2
GND
2
1
INPUT
SERIES
PASS
ELEMENT
SOA
PROTECTION
CURRENT
GENERA TOR
STARTING
CIRCUIT
REFERENCE
VOLTAGE
ERROR
AMPLIFIER
THERMAL
PROTECTION
78M05
1
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= 5mA to 350mA - - 1
Electrical Characteristics (78M05)
Absolute Maximum Ratings
Note:
1. Thermal resistance test board
Size: 76.2mm * 114.3mm * 1.6mm(1S 0P)
JED E C standard: JESD51-3, JESD51-7
2. Assume no ambient airflow
(Refer to the test circuits, 0
<
T
J
<
+125°C, I
O
=350mA, V
I
=10V, unless otherwise specified, C
I
= 0.33µF, C
O
=0.1µF)
Note:
3. Load and line regulation are specified at constant junction temperature. Change in V
o
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Value Unit
Input Voltage (for V
O
= 5V to 18V)
V
I
30 V
Thermal Resistance Junction-Case (Note1)
TO-220 (Tc = +25°C)
R
θJC
2.5 °C/W
Thermal Resistance Junction-Air (Note1, 2)
TO-220 (Ta = +25°C)
D-PAK (Ta = +25°C)
R
θJA
66
92
°C/W
Operating Junction Temperature Range T
OPR
0 ~ +150 °C
Storage Temperature Range T
STG
-65 ~ +150 °C
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage V
O
T
J
= +25°C 4.855.2
V
I
O
= 5mA to 350mA
V
I
= 7V to 20V
4.75 5 5.25
Line Regulation (Note3) ∆V
O
I
O
= 200mA
T
J
=+25°C
V
I
= 7V to 25V - - 100
mV
V
I
= 8V to 25V - - 50
Load Regulation (Note3) ∆V
O
I
O
= 5mA to 0.5A, T
J
=+25°C - - 100
mV
I
O
= 5mA to 200mA, T
J
=+25 °C- - 50
Quiescent Current I
Q
T
J
=+25°C-4.06.0mA
Quiescent Current Change ∆I
Q
I
O
mA
I
O
= 200mA
V
I
= 8V to 25V
--0.8
Output Voltage Drift ∆V/∆T
I
O
= 5mA
T
J
= 0 to +125°C
--0.5-mV/°C
Output Noise Voltage V
N
f = 10Hz to 100kHz - 40 -
µ
V/Vo
Ripple Rejection RR
f = 120Hz, I
O
= 300mA
V
I
= 8V to 18V, T
J
=+25 °C
-80- dB
Dropout Voltage V
D
T
J
=+25°C, I
O
= 500mA - 2 - V
Short Circuit Current I
SC
T
J
=+25°C, V
I
= 35V - 300 - mA
Peak Current I
PK
T
J
=+25°C - 700 - mA
2
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78M05