TS78M05A
3-Terminal 500mA Positive Voltage Regulator
1/5
Version: C12
TO
-
252
(DPAK)
General Description
The TS78M05A Series positive voltage regulators are identical to the popular TS7805 Series devices, except that
they are specified for only half the output current. Like the TS7805 devices, the TS78M05A Series 3-Terminal
regulators are intended for local, on-card voltage regulation.
Internal current limiting, thermal shutdown circuitry and safe-area compensation for the internal pass transistor
combine to make these devices remarkably rugged under most operating conditions. Maximum output current with
adequate heatsink is 500mA
Features
● Output Voltage 5V
● Output current up to 500mA
● Internal thermal overload protection
● Internal short-circuit current limiting
● Output transistor safe-area compensation
● Output voltage offered in 2% tolerance
Standard Application Circuit
A common ground is required between the input and the
output voltages. The input voltage must remain typically
2.0V above the output voltage even during the low point
on the Input ripple voltage.
XX = these two digits of the type number indicate voltage.
* = Cin is required if regulator is located an appreciable
distance from power supply filter.
** = Co is not needed for stability; however, it does improve
transient response.
Ordering Information
Part No. Package
Packing
TS78M05ACP RO
TO-252 2.5Kpcs / 13” Reel
Absolute Maximum Rating
(Ta = 25
o
C unless otherwise noted)
Parameter Symbol Limit Unit
Input Voltage V
IN
* 35 V
Power Dissipation P
D
Internal Limited W
Operating Junction Temperature T
J
0~+125
o
C
Storage Temperature Range T
STG
-65~+150
o
C
Thermal Resistance - Junction to Case RӨ
JC
8
o
C/W
Thermal Resistance - Junction to Ambient RӨ
JA
100
o
C/W
Definition
:
1. Input
2. Ground (tab)
3. Output
TS78M05A
3-Terminal 500mA Positive Voltage Regulator
2/5
Version: C12
TS78M05A Electrical Characteristics
(Vin=10V, Iout=350mA, 0
o
C≤Tj≤125
o
C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)
Parameter Symbol Test Condition Min Typ Max Unit
Output voltage Vout Tj=25
o
C 4.90 5 5.10 V
7.5V≤Vin≤20V,
5mA≤Iout≤350mA 4.80 5 5.20
Line Regulation REGline Tj=25
o
C
7.5V≤Vin≤25V -- 3 100
mV
8V≤Vin≤12V -- 1 50
Load Regulation REGload Tj=25
o
C
5mA≤Iout≤500mA
-- 15 100
5mA≤Iout≤200mA
-- 5 50
Quiescent Current Iq Iout=0, Tj=25
o
C -- 3 6 mA
Quiescent Current Change ∆Iq 7.5V≤Vin≤25V -- -- 0.8
5mA≤Iout≤350mA -- -- 0.5
Output Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25
o
C -- 40 -- µV
Ripple Rejection Ratio RR f=120Hz, 8V≤Vin≤18V 62 78 -- dB
Voltage Drop Vdrop Iout=500mA, Tj=25
o
C -- 2 -- V
Output Resistance Rout f=1KHz -- 17 -- mΩ
Output Short Circuit Current
Ios Tj=25
o
C -- 50 -- mA
Peak Output Current Io peak Tj=25
o
C -- 0.7 -- A
Temperature Coefficient of
Output Voltage ∆Vout/ ∆Tj
Iout= 5mA, 0
o
C≤Tj≤125
o
C -- -0.2 -- mV/
o
C
TS78M05A
3-Terminal 500mA Positive Voltage Regulator
3/5
Version: C12
Electrical Characteristics Curve
Figure 1. Worst Case Power Dissipation vs.
Ambient Temperature (TO-220)
Figure 3. Ripple Rejection vs. Frequency
Figure 3. Bias Current vs. Input Voltage
Figure 4. Dropout Voltage vs.
Junction Temperature
Figure 5. Bias Current vs. Output Current
TS78M05A
3-Terminal 500mA Positive Voltage Regulator
4/5
Version: C12
TO-252 Mechanical Drawing
Marking Diagram
XX
= Output Voltage
(05=5V)
Y
= Year Code
M
= Month Code
(A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,
J=Oct, K=Nov, L=Dec)
L
= Lot Code
CP
= Package Code for TO
-252
TO-252 DIMENSION
DIM
MILLIMETERS INCHES
MIN MAX MIN MAX
A 2.3BSC 0.09BSC
A1
4.6BSC 0.18BSC
B 6.80 7.20 0.268 0.283
C 5.40 5.60 0.213 0.220
D 6.40 6.65 0.252 0.262
E 2.20 2.40 0.087 0.094
F 0.00 0.20 0.000 0.008
G 5.20 5.40 0.205 0.213
G1
0.75 0.85 0.030 0.033
G2
0.55 0.65 0.022 0.026
H 0.35 0.65 0.014 0.026
I 0.90 1.50 0.035 0.059
J 2.20 2.80 0.087 0.110
K 0.50 1.10 0.020 0.043
L 0.90 1.50 0.035 0.059
M 1.30 1.70 0.051 0.67
TS78M05A
3-Terminal 500mA Positive Voltage Regulator
5/5
Version: C12
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assumes no responsibility or liability for any errors or inaccuracies.
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