ML4835

3

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.

Output Current, Source or Sink

(OUT A, OUT B, PFC OUT) DC ........................... 250mA

PIFB Input Voltage ............................................–3V to 2V

Maximum Forced Voltage

(PEAO, LEAO) ............................................ –0.3V to 7.7V

Maximum Forced Current

(PEAO, LEAO) ...................................................... ±20mA

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

Storage Temperature Range ...................... –65ºC to 150ºC

Lead Temperature (Soldering, 10 sec) ..................... 260ºC

Thermal Resistance (

ML4835CP .......................................................... 65ºC/W

ML4835CS .......................................................... 80ºC/W

OPERATING CONDITIONS

Temperature Range ....................................... 0°C to 85°C

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

LAMP CURRENT AMPLIFIER (LAMP FB, LEAO)

Input Bias Current

-0.3

-1.0

µA

Small Signal Transconductance

35

75

105

µ

Input Bias Voltage

-0.3

5.0

V

Output Low

0.2

0.4

V

Output High

7.1

7.5

V

Source Current

LAMP FB = 0V, LEAO = 6V

-80

-220

µA

Sink Current

LAMP FB = 5V, LEAO = 0.3V

80

220

µA

PFC VOLTAGE FEEDBACK AMPLIFIER ( PEAO, PVFB/OVP)

Input Bias Current

-0.3

-1.0

µA

Small Signal Transconductance

35

75

105

µ

Input Bias Voltage

-0.3

5.0

V

Output Low

0.2

0.4

V

Output High

6.4

6.8

V

Source Current

PVFB = 0V, PEAO = 6V

-80

220

µA

Sink Current

PVFB = 5V, PEAO = 0.3V

80

220

µA

PFC CURRENT-LIMIT COMPARATOR (PIFB)

Current-Limit Threshold

-0.9

-1.0

-1.1

V

Propagation Delay

100mV Step and 100mV Overdrive

100

ns

PFC OVP COMPARATOR

OVP Threshold

2.65

2.75

2.85

V

Hysteresis

0.14

0.20

0.30

V

Propagation Delay

1.4

µs