ML4821 datasheet(3/12 Pages) MICRO-LINEAR

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ML4821

Micro Linear

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 Current (ICC) ................................................ 35mA

OUT Current, Source or Sink .................................... 1.0A

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

µJ

ISINE Input Current .................................................. 1.2mA

EA OUT Source Current .......................................... 50mA

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

Input Voltage ...................................... GND –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 (

θJA)

Plastic DIP ........................................................ 75

°C/W

Plastic SOIC ..................................................... 95

°C/W

OPERATING CONDITIONS

Temperature Range

ML4821CX ................................................. 0

°C to 70°C

ML4821IX .............................................. –40

°C to 85°C

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, RT = 6.2kΩ, CT = 720pF, TA = Operating Temperature Range, VCC = 15V (Notes 1 & 2).

PARAMETER

CONDITIONS

MIN

TYP.

MAX

UNITS

OSCILLATOR

Initial accuracy

TA = 25°C

100

110

kHz

Voltage stability

12V < VCC < 18V

Temperature stability

Total Variation

Line, Temperature

115

kHz

Ramp Valley to Peak

4.7

5.2

5.6

RT Voltage

4.8

5.0

5.2

Discharge Current

CT= 2V, RT = Open

7.8

8.4

9.3

SYNC Input Threshold

1.5

2.0

3.0

REFERENCE

Output Voltage

TA = 25°C, IO = 1mA

4.95

5.00

5.05

Line regulation

12V < VCC < 24V

Load regulation

1mA < IO < 20mA

Temperature stability

Total Variation

line, load, temp

4.9

5.1

Output Noise Voltage

10Hz to 10kHz

µV

Long Term Stability

TA = 125°C, 1000 hrs

Short Circuit Current

VREF = 0V

–30

–85

–180

VOLTAGE ERROR AMPLIFIER

Input Offset Voltage

–15

Input Bias Current

–50

–800

Open Loop Gain

2 < EA OUT < 6V

PSRR

12V < VCC < 24V

100

Output Sink Current

EA OUT = 4V, INV = 5.5V

300

500

µA

Output Source Current

EA OUT = 4.0V, INV = 4.8V

–10

–30

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