TS278R00
2A Ultra Low Dropout Voltage Regulator w/Disable
ITO-220-4L
ITO-220-4SL
Pin assignment:
1. Input
2. Output
3. Gnd
4. Enable
Low Dropout Voltage 0.5V max.
General Description
The TS278R00 Series is a low-dropout voltage regulator suitable for various electronic equipments. It provides constant voltage
power source with ITO-220 4 lead full mold package.
Dropout voltage of TS278R00 Series is below 0.5V in full rated current (2A). This regulator has various functions such as a peak
current protection, thermal shut down, over voltage protection and an output disable function.
Features
Ultra Low Dropout performance 0.5Vmax. 2A
Over Current Protection, Thermal Shutdown
Over Voltage Protection, Short Circuit Protection
With Output Disable Function
± 2.4% Typical Total output
TO-220 Full-Mold Package (4Pin)
Ordering Information
Part No.
TS278RxxCI4
TS278RxxCI4S
Operating Temp.
-40 ~ 125 C
o
Package
ITO-220-4L
ITO-220-4SL
Note: Where xx denotes voltage option,
33=3.3V, 05=5.0V, 08=8.0V, 09=9.0V, 12=12V
Block Diagram
TS278R00 Series
1-4
2005/5 rev. B
Absolute Maximum Ratings
Parameter
Input Voltage
Disable Voltage
Output Current
Power Dissipation 1
Power Dissipation 2
Junction Temperature
Thermal Resistance, Junction-to Case(Note2)
Thermal Resistance, Junction-to Air(Note2)
Thermal Shutdown Temperature
Symbol
Vin
Vdis
Io
Pd1
Pd2
Tj
Rθjc
Rθja
Ttsd
Value
30
30
2.0
1.5
15
-40~+125
4.31
48.83
150
Unit
V
V
A
W
W
°C
°C
/ W
°C
/ W
°C
Remark
--
--
--
No heat sink
With heat sink
--
--
--
--
Electrical Characteristics
TS278R00 Series
(Vin=Note 6, Io=1.0A, Ta=25°C , unless otherwise specified).
Parameter
TS278R33
TS278R05
Output Voltage
TS278R08
TS278R09
TS278R12
Load Regulation
Line Regulation
Ripple Rejection Ratio
Dropout Voltage
Disable Voltage High
Disable Voltage Low
Disable Bias Current High
Disable Bias Current Low
Quiescent Current
REGload
REGline
RR
Vdrop
VdisH
VdisL
IdisH
IdisL
Iq
5mA<Io<2A
Note 7
Note1
Io=2A
Output Active
Output Disabled
Vdis=2.7V
Vdis=0.4V
Io=0A
Vo
Symbol
Conditions
Min.
3.22
4.88
7.80
8.78
11.7
--
--
45
--
2.0
--
--
--
--
Typ.
3.3
5.0
8.0
9.0
12
0.1
0.5
55
--
--
--
--
--
--
Max.
3.38
5.12
8.20
9.22
12.3
2.0
2.5
--
0.5
--
0.8
20
-0.4
10
Unit
V
%
%
dB
V
V
V
uA
mA
mA
Note:
1.These parameters, although guaranteed, are not 100% tested in production.
2. Junction -to -case thermal resistance test environments.
3. Pneumatic heat sink fixture.
4. Clamping pressure 60psi through 12mm diameter cylinder.
5. Thermal grease applied between PKG and heat sink fixture
6. TS278R33: Vin=5V, TS278R05: Vin=7V, TS278R08: Vin=10V, TS278R09: Vin=11V, TS278R12: Vin=15V
7. TS278R33: Vin=4~10V, TS278R05: Vin=6~12V, TS278R08: Vin=9~25V, TS278R09: Vin=10~25V,
TS278R12: Vin=13~29V
TS278R00 Series
2-4
2005/5 rev. B
Standard Test Circuit
Ripple Rejection Test Circuit
Standard Application Circuit
TS278R00 Series
3-4
2005/5 rev. B
ITO-220-4L Mechanical Drawing
ITO-220-4L DIMENSION
DIM
A
A1
A2
D
E
E1
L
L2
L2
He
C
E
b
θ
MILLIMETERS
MIN
4.42
2.69
1.68
10.00
6.85
8.54
13.15
16.56
3.60
28.44
0.48
2.54(TYP)
0.635(TYP)
4°
7°
4°
MAX
4.72
2.89
1.88
10.20
7.05
8.74
13.55
16.76
3.80
28.92
INCHES
MIN
0.174
0.136
0.066
0.394
0.269
0.336
0.518
0.652
0.142
1.119
0.019
0.1(TYP)
0.025(TYP)
7°
MAX
0.186
0.114
0.074
0.402
0.278
0.344
0.533
0.660
0.150
1.159
ITO-220-4SL Mechanical Drawing
ITO-220-4SL DIMENSION
DIM
A
A1
A2
D
E
E1
L
L2
L2
He
C
E
b
θ
MILLIMETERS
MIN
4.42
2.69
1.68
10.00
6.85
8.54
8.32
16.56
3.60
23.72
0.48
2.54(TYP)
0.635(TYP)
4°
7°
4°
MAX
4.72
2.89
1.88
10.20
7.05
8.74
8.72
16.76
3.80
24.72
INCHES
MIN
0.174
0.136
0.066
0.394
0.269
0.336
0.328
0.652
0.142
0.934
0.019
0.1(TYP)
0.025(TYP)
7°
MAX
0.186
0.114
0.074
0.402
0.278
0.344
0.343
0.660
0.150
0.973
TS278R00 Series
4-4
2005/5 rev. B
单片机
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