TSC TS39301, TS39302, TS39303, TS39304 Technical data

TS39301/2/3/4 1-7 2005/12 rev. A

TS39301/2/3/4

3A Ultra Low Dropout Positive Voltage Regulator

Low Dropout Voltage 0.4V (typ.)

Output Current 3A

Low Quiescent Current

General Description

The TS39301/2/3/4 are 3A ultra low dropout linear voltage regulators that provide low voltage, high current output with

a minimum of external components. The TS39301/2/3/4 offers extremely low dropout (typically 400mV at 3A) and low

quiescent current (typically 36mA at 3A).

The TS39301/2/3/4 is ideal for PC add-in cards that need to convert from standard 3.3V to 2.5V or 2.5V to 1.8V. A

guaranteed maximum dropout voltage of 500mV over all operating conditions allows the TS39301/2/3/4 to provide

2.5V from a supply as low as 3V, and 1.8V from a supply as low as 2.5V. The TS39301/2/3/4 also has fast transient

response for heavy switching applications. The device requires only 47uF of output capacitor to maintain stability and

achieve fast transient response.

On the TS39301/2/3/4, the enable pin may be tied to input voltage if it is not required for enable control. This series
are offered in 5-pin TO-220, TO-263 package.

Features

 Dropout voltage typically 0.4V @Io=3A

 Output current up to 3A

 Low ground current

 Current limiting and Thermal shutdown

 Extremely fast transient response

 Reversed leakage protection

 Reverse battery protection

 TTL/CMOS compatible enable pin

 Error flag output (TS39301 only)

 Adjustable version (TS39302 only)

 Output voltage sense (TS39303 / 4 only)

Ordering Information

Note: Where xx denotes voltage option, available are

50 = 5.0V

33 = 3.3V

25 = 2.5V
18 = 1.8V

Part No.

Operating Temp.

Package

TS39301CZ5xx

TS39302CZ5

TS39303CZ5xx

TS39304CZ5xx

TO-220-5L

TS39301CM5xx

TS39302CM5

TS39303CM5xx

TS39304CM5xx

-40 ~ +125 oC

TO-263-5L

Applications

 Battery power equipment

 LDO linear regulator for PC add-in cards

 PowerPCTM power supplies

 Multimedia and PC processor supplies

 High efficiency linear power supplies

 High efficiency post regulator for switching supply

 Low-voltage microcontrollers and digital logic

 SMPS post regulator

TS39301/2/3/4 2-7 2005/12 rev. A

Absolute Maximum Rating (Note 1)

Supply Voltage

Vin

-20V ~ +20

V

Enable Voltage

Ven

+20

V

Storage Temperature Range

T

STG

-65 ~ +150

o

C

Lead Soldering Temperature (260 oC)

5

S

ESD (Note 3)

Operating Rating (Note 2)

Operation Input Voltage

Vin (operate)

+2.5 ~ +16

V

Operation Enable Voltage

Ven (operate)

+16

V

Power Dissipation (Note 4)

PD

Internally Limited

W

Operating Junction Temperature Range

TJ

-40 ~ +125

o

C

Electrical Characteristics

(Vin = Vout + 1V, Venable= 2.4V, Tj = 25 oC, unless otherwise specified.)

Parameter

Conditions

Min

Typ

Max

Unit

Output Voltage

IL=10mA

0.990|Vo|

1.010|Vo|

Output Voltage

10mA ≤ IL ≤ 3A,

Vo+1V ≤ Vin ≤ 8V

0.980|Vo|

5.0 / 3.3

2.5 / 1.8

1.020|Vo|

V

Line Regulation

IL=10mA, Vo+1V ≤Vin≤ 8V

--

0.06

0.5

%

Load Regulation

Vin=Vout+1V, 10mA≤IL≤3A

--

0.2

1.0

%

Output Voltage Temp. Coefficient

(Note 5)

--

40

100

ppm/ oC

Dropout Voltage (Note 6 & 8)

ΔVout= -1%

IL=100mA

IL=750mA

IL=1.5A

IL=3.0A

--

--

--

--

65

185

250

400

200

--

--

550

mV

Quiescent Current (Note 7)

Vin=Vout+1V

IL=100mA

IL=750mA

IL=1.5A

IL=3.0A

--

--

--

--

6

10

17

45

10

20

--

--

mA

Current Limited

Vout=0, Vin=Vout+1V

--

4.5

--

A

Enable Input (TS39301/2/3/4)

Low (OFF)

--

--

0.8
Input Logic Voltage
High (ON)

2.25

--

--

V

VEN=2.25V

--

--

75
Enable Pin Input Current
VEN =0.8V

--

--

4

µA

Shutdown Output Current (Note 8)

--

--

20

µA

Adjustable Output (TS39302)

Reference Voltage

0.980|Vo|

1.24

1.020|Vo|
V

TS39301/2/3/4 3-7 2005/12 rev. A

Electrical Characteristics

Flag Output (TS39301)

Output Leakage Current

VOH=16V

--

-- 2 µA

Output Low Voltage (Note 9)

Vin=2.5V, IOL=250uA

--

--

400

mV

Upper Threshold Voltage

% of Vout

--

--

99

%

Lower Threshold Voltage

% of Vout

93

--

--

%

Hysteresis

-- 1 --

%

Thermal Performance

Condition

Package type

Typ

Unit

TO-220-5L

2

Thermal Resistance

Junction to Case

TO-263-5L

2

o

C/W

Note 1. Exceeding the absolute maximum ratings may be damaged the device.

Note 2. The device is not guaranteed to function outside its operating rating.

Note 3. Devices are ESD sensitive. Handling precautions recommended.

Note 4. Pd

(max)

= (Tj

(max)

- Ta) + Өja, where Өja depends upon the printed circuit layout. See ”Applications

Information”.

Note 5. Output voltage temperature coefficient is ΔVout

(worst case)

+ (Tj

(max)

– Tj

(min)

) where Tj

(max)

is +125 oC and

Tj

(min)

is -40 oC.

Note 6. Vdrop = Vin - Vout when Vout decreases to 99% of its nominal output voltage with Vin = Vout + 1. For output

voltages below 2.5V, dropout voltage is the input-to-output voltage differential with the minimum input voltage

being 2.5V. Minimum input operating voltage is 2.5V

Note 7. Ignd is the quiescent current. Iin = Ignd + Iout

Note 8. Ven<0.8V, Vin<8V and Vout=0

Note 9. For 1.8V device, Vin = 2.25V (device is in dropout)

Block Diagram

TS3930x series

* Feedback network is fixed output versions only (TS39301 & TS39303 & TS39304)

** Adjustable output version only (TS39302)