ML4833 datasheet(3/13 Pages) MICRO-LINEAR

3 / 13 page

ML4833

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, RSET = 22.1ký, RT = 15.8kW, CT = 1.5nF, CVCC = 1µF, VCC = 12.5V. (Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Lamp Current Amplifier (LAMP FB, LFB OUT)

Input Bias Current

–0.3

–1.0

µA

Small Signal Transconductance

105

µW

Input Voltage Range

–0.3

5.0

Output Low

Voltage at LAMP FB = 3V, RL =

0.2

0.4

Output High

Voltage at LAMP FB = 2V, RL =

7.1

7.5

7.8

Source Current

Voltage at LAMP FB = 0V,

LFB OUT = 7V, TA = 25°C

–0.05

–0.15

–0.25

Sink Current

Voltage at LAMP FB = 5V,

LFB OUT = 0.3V, TA = 25°C

0.05

0.12

0.22

PFC Voltage Feedback Amplifier (PEAO, PVFB/OVP)

Input Bias Current

–0.3

–1.0

µA

Small Signal Transconductance

105

µW

Input Voltage Range

–0.3

5.0

Output Low

Voltage at PVFB = 3V, RL =

0.2

0.4

Output High

Voltage at PVFB = 2V, RL =

6.5

6.8

7.1

Source Current

Voltage at PVFB/OVP = 0V,

PEAO = 6V, TA = 25°C

–0.05

–0.15

–0.25

Sink Current

Voltage at PVFB/OVP = 3V,

PEAO = 0.3V, TA = 25°C

0.03

0.07

0.16

PFC Current — Limit Comparator (PIFB)

Current-Limit Threshold

–0.90

–1.05

–1.15

Propagation Delay

100mV step and 100mV overdrive

100

Oscillator

Initial Accuracy

TA = 25°C

kHz

Voltage Stability

VCCZ – 4.5V < VCC <VCCZ – 0.5V

Temperature Stability

Total Variation

Line, temperature

kHz

Ramp Valley to Peak

2.5

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) ............................................... 60mA

Output Current, Source or Sink

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

Output Energy (capacitive load per cycle).............. 1.5 mJ

Analog Inputs

(LAMP FB, INTERRUPT, VCC) ........... –0.3V to VCC –2V

PIFB input voltage ......................................... –1.5V to 2V

Maximum Forced Voltage

(PEAO, LFB OUT) ................................... –0.3V to 7.7V

Maximum Forced Current (PEAO, LFB OUT) ........ ±20mA

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

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

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

Thermal Resistance (

qJA)

ML4833CP ...................................................... 70°C/W

ML4833CS .................................................... 100°C/W

OPERATING CONDITIONS

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

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