ML4802

3

August 2000

Datasheet

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, VCC = 15V, RT = 29.4k

W, RRAMP1 = 15.4kW, CT = 270pF, CRAMP1 = 620pF,

TA = Operating Temperature Range (Note 1)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VOLTAGE ERROR AMPLIFIER

Input Voltage Range

0

5

V

Transconductance

VNON INV = VINV, VEAO = 3.75V

20

35

50

µ

Feedback Reference Voltage

2.4

2.5

2.6

V

Input Bias Current

Note 2

-0.5

-1.0

µA

Output High Voltage

6.0

6.7

V

Output Low Voltage

0.2

0.5

V

Source Current

DVIN = ±0.5V, VOUT = 6V

–1

–2.5

–4

µA

Sink Current

DVIN = ±0.5V, VOUT = 1.5V

–1

–2.5

–4

µA

Open Loop Gain

50

60

dB

PSRR

11V < VCC < 16.5V

50

60

dB

CURRENT ERROR AMPLIFIER

Input Voltage Range

-1.5

2

V

Transconductance

VNON INV = VINV, VEAO = 3.75V

50

100

150

µ

Input Offset Voltage

–5

3

10

mV

Input Bias Current

-0.5

-1.0

µA

Output High Voltage

6.0

6.7

V

Output Low Voltage

0.65

1.0

V

Source Current

DVIN = ±0.5V, VOUT = 6V

-40

-70

-150

µA

Sink Current

DVIN = ±0.5V, VOUT = 1.5V

40

70

150

µA

Open Loop Gain

60

75

dB

PSRR

11V < VCC < 16.5V

60

75

dB

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.

VCC .......................................................................... 18V

ISENSE Voltage ................................................–3V to 5V

Voltage on Any Other Pin .... GND – 0.3V to VCC + 0.3V

IREF ....................................................................... 20mA

IAC Input Current ................................................... 10mA

PeakCurrent, Source or Sink

PFC OUT, PWM OUT ....................................... 500mA

PFC OUT, PWM OUT Energy Per Cycle .................. 1.5µJ

Junction Temperature .............................................. 150°C

Storage Temperature Range ..................... –65°C to 150°C

Lead Temperature (Soldering, 10 sec) ..................... 260°C

Thermal Resistance (

qja)

Plastic DIP ....................................................... 80°C/W

Plastic SOIC ................................................... 105°C/W

OPERATING CONDITIONS

Temperature Range

ML4802CX ................................................. 0°C to 70°C

ML4802IX .............................................. –40°C to 85°C

ABSOLUTE MAXIMUM RATINGS