ML4819CS datasheet(3/15 Pages) MICRO-LINEAR

3 / 15 page

ML4819

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, RT = 14kW, CT = 1000pF, TA = Operating Temperature Range, VCC = 15V (Notes 1, 2).

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

OSCILLATOR

Initial Accuracy

TJ = 25×C

104

kHz

Voltage Stability

12V < VCC < 18V

0.2

Temperature Stability

Total Variation

Line, temp.

106

kHz

Ramp Valley

0.9

Ramp Peak

4.3

RT Voltage

4.8

5.0

5.2

Discharge Current (PWM B open)

TJ = 25×C, VOUT A = 2V

7.5

8.4

9.3

VOUT A = 2V

7.2

8.4

9.5

DUTY CYCLE LIMIT COMPARATOR

Input Offset Voltage

–15

Input Bias Current

–2

–10

Duty Cycle

VDUTY CYCLE = VREF/2

REFERENCE

Output Voltage

TJ = 25×C, IO = 1mA

4.95

5.00

5.05

Line Regulation

12V < VCC < 25V

Load Regulation

1mA < IO < 20mA

Temperature Stability

0.4

Total Variation

Line, load, temperature

4.9

5.1

Output Noise Voltage

10Hz to 10kHz

Long Term Stability

TJ = 125×C, 1000 hours, (Note 1)

Short Circuit Current

VREF = 0V

–30

–85

–180

ERROR AMPLIFIER

Input Offset Voltage

–15

Input Bias Current

–0.1

–1.0

Open Loop Gain

1 < VEA OUT A < 5V

PSRR

12V < VCC < 25V

Output Sink Current

VEA OUT A = 1.1V, VINV A = 5.2V

Output Source Current

VEA OUT A = 5.0V, VINV A = 4.8V

–0.5

–1.0

ABSOLUTE MAXIMUM RATINGS

Absolute maximum ratings are those values beyond which

the device could be permanently damaged. Absolute

maximum ratings are stress ratings only and functional

device operation is not implied.

Supply Voltage (VCC) ................................................. 35V

Output Current, Source or Sink (RAMP COMP)

DC ....................................................................... 1.0A

Output Energy (capacitive load per cycle)................... 5

Multiplier ISINE Input (ISINE) ................................... 1.2mA

Error Amp Sink Current (GM OUT) ......................... 10mA

Oscillator Charge Current ......................................... 2mA

Analog Inputs (ISENSE A, EA OUT A, INV A)

............................................................... –0.3V to 5.5V

Junction Temperature ............................................ 150

×C

Storage Temperature Range ..................... –65

×C to 150×C

Lead Temperature (soldering 10 sec.) ..................... 260

×C

Thermal Resistance (

qJA)

Plastic DIP or SOIC .......................................... 60

×C/W

OPERATING CONDITIONS

Temperature Range

ML4819C .................................................. 0

×C to 70×C

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