TSC TS278R00 Technical data

TS278R00 Series 1-4 2005/5 rev. B

TS278R00

2A Ultra Low Dropout Voltage Regulator w/Disable

ITO-220-4L ITO-220-4SL

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.

Operating Temp.

Package

TS278RxxCI4

ITO-220-4L

TS278RxxCI4S

-40 ~ 125 oC

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

Pin assignment:

1. Input

2. Output

3. Gnd

4. Enable

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TS278R00 Series 2-4 2005/5 rev. B

Absolute Maximum Ratings

Parameter

Symbol

Value

Unit

Remark

Input Voltage

Vin

30 V --

Disable Voltage

Vdis

30 V --

Output Current

Io

2.0 A --

Power Dissipation 1

Pd1

1.5

W

No heat sink

Power Dissipation 2

Pd2

15

W

With heat sink

Junction Temperature

Tj

-40~+125

°C

--

Thermal Resistance, Junction-to Case(Note2)

Rθjc

4.31

°C / W

--

Thermal Resistance, Junction-to Air(Note2)

Rθja

48.83

°C / W

--

Thermal Shutdown Temperature

Ttsd

150

°C

--

Electrical Characteristics

TS278R00 Series (Vin=Note 6, Io=1.0A, Ta=25°C , unless otherwise specified).

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

TS278R33

3.22

3.3

3.38

TS278R05

4.88

5.0

5.12

TS278R08

7.80

8.0

8.20

TS278R09

8.78

9.0

9.22

Output Voltage

TS278R12

Vo

11.7

12

12.3

V

Load Regulation

REGload

5mA<Io<2A

--

0.1

2.0

%

Line Regulation

REGline

Note 7

--

0.5

2.5

%

Ripple Rejection Ratio

RR

Note1

45

55

--

dB

Dropout Voltage

Vdrop

Io=2A

--

--

0.5

V

Disable Voltage High

VdisH

Output Active

2.0

--

--

V

Disable Voltage Low

VdisL

Output Disabled

--

--

0.8

V

Disable Bias Current High

IdisH

Vdis=2.7V

--

--

20

uA

Disable Bias Current Low

IdisL

Vdis=0.4V

--

--

-0.4

mA

Quiescent Current

Iq

Io=0A

--

--

10

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