L200C.pdf

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L200

ADJUSTABLE VOLTAGE AND CURRENT REGULATOR

ADJUSTABLE OUTPUT CURRENT UP TO 2 A

(GUARANTEED UP TO T j = 150 ° C)

ADJUSTABLE OUTPUT VOLTAGE DOWN TO

2.85 V

INPUT OVERVOLTAGE PROTECTION (UP TO

60 V, 10 ms)

SHORT CIRCUIT PROTECTION

OUTPUT TRANSISTOR S.O.A. PROTECTION

THERMAL OVERLOAD PROTECTION

LOW BIAS CURRENT ON REGULATION PIN

LOW STANDBY CURRENT DRAIN

Pentawatt [

TO-3 (4 lead)

DESCRIPTION

The L200 is a monolithic integrated circuit for volt-

age and current programmable regulation. It is

available in Pentawatt [ package or 4-lead TO-3

metal case.Current limiting, power limiting, thermal

shutdown and input overvoltage protection (up to

60 V) make the L200 virtually blow-out proof.

The L200 can be used to replace fixed voltage

regulators when high output voltage precision is

required and eliminates the need to stock a range

of fixed voltage regulators.

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

V i

DC Input Voltage

V i

Peak Input Voltage (10 ms)

V i-o Dropout Voltage

I o

Output Current

internally limited

P tot

Power Dissipation

internally limited

T stg

Storage Temperature

-55 to 150

T op

Operating Junction Temperature for L200C

-25 to 150

for L200

-55 to 150

THERMAL DATA

TO-3

Pentawatt [

R th j-case Thermal Resistance Junction-case

Max

C/W

R th j-amb

Thermal Resistance Junction-ambient

Max

C/W

January 2000

1/12

L200

CONNECTION DIAGRAMS AND ORDER CODES (top views)

Type

Pentawatt [

TO-3

L200

L200 T

L200 C

L200 CH

L200 CV

L200 CT

BLOCK DIAGRAM

APPLICATION CIRCUITS

Figure 1. Programmable Voltage Regulator

with Current Limiting

Figure 2. Programmable Current Regulator.

2/12

L200

SCHEMATIC DIAGRAM

ELECTRICAL CHARACTERISTICS (T amb =25

C, unless otherwise specified)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VOLTAGE REGULATION LOOP

I d

Quiescent drain Current (pin 3)

V i = 20 V

4.2

9.2

e N

Output Noise Voltage

Vo = Vref

I o =10mA

B = 1 MHz

V o

Output Voltage Range

I o = 10 mA

2.85

V o

Voltage Load Regulation

(note 1)

I o =2A

0.15

0.1

0.9

I o = 1.5 A

V i

Line Regulation

V 0 =5V

V i = 8 to 18 V

V o

SVR

Supply Voltage Rejection

V 0 =5V

I o = 500 mA

V i =10V pp

f = 100 Hz (note 2)

V i-o

Droupout Voltage between Pins 1

and 5

I o = 1.5 A

V 0

2.5

V ref

Reference Voltage (pin 4)

V i =20V

I o = 10 mA

2.64

2.77

2.86

3/12

L200

ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

V ref

Average Temperature Coefficient

of Reference Voltage

V i = 20 V

Io = 10mA

for Tj = - 25 to 125

-0.25

-1.5

mV/

for Tj = 125 to 150

mV/

I 4

Bias Current and Pin 4

I 4

Average Temperature

Coefficient (pin 4)

-0.5

%/°

T • I 4

Z o

Output Impedance

V i =10V

V o =V ref

I o = 0.5 A

f = 100 Hz

1.5

CURRENT REGULATION LOOP

V SC

Current Limit Sense Voltage

between Pins 5 and 2

V i =10V

V o =V ref

I 5 = 100 mA

0.38

0.45

0.52

V SC

Average Temperature

Coefficient of V SC

0.03

%/° C

T • V SC

I o

Current Load Regulation

Vi = 10 V

Vo = 3V

I o = 0.5 A

I o =1A

I o = 1.5 A

1.4

0.9

I SC

Peak Short Circuit Current

V i -V 0 =14V

(pins 2 and 5 short circuited)

3.6

Note 1: A load step of 2 A can be applied provited that input-output differential voltage is lower than 20 V (see Figure 3).

Note 2: The same performance can be maintained at higher output levels if a bypassing capacitor is provited between pins 2 and 4.

Figure 3. Typical Safe Operating Area

Protection.

Figure 4. Quiescent Current vs. Supply

Voltage.

4/12

L200

Figure 5. Quiescent Current vs. Junction

Voltage.

Figure 6. Quiescent Current vs. Output

Current.

Figure 7. Output Noise Voltage vs. Output

Voltage.

Figure 8. Output Noise Voltage vs.

Frequency.

Figure 9. Reference Voltage vs. Junction

Temperature.

Figure 10. Voltage Load Regulation vs.

Junction Temperature.

5/12

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