ML4833 datasheet(4/13 Pages) MICRO-LINEAR

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ML4833

ELECTRICAL CHARACTERISTICS (Continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Oscillator (Continued)

CT Charging Current

Voltage at LAMP FB = 3V,

RT/CT = 2.5V, RX/CX = 0.9V (Preheat)

–90

–110

–130

µA

LAMP FB = 3V, RT/CT = 2.5V,

RX/CX = Open

–180

–220

–260

µA

CT Discharge Current

Voltage at RT/CT = 2.5V

4.0

5.5

7.0

Output Drive Deadtime

0.65

1.35

µs

Reference Section

Output Voltage

TA = 25°C, IO = 1mA

7.4

7.5

7.6

Line regulation

VCCZ – 4.5V < VCC < VCCZ – 0.5V

Load regulation

1mA < IO < 5mA

Temperature stability

0.4

Total Variation

Line, load, temp

7.35

7.65

Output Noise Voltage

10Hz to 10kHz

µV

Long Term Stability

TJ = 125°C, 1000 hrs

Preheat and Interrupt Timer (RX/CX where RX = 680ký, CX = 4.7µF)

Initial Preheat Period

0.8

Subsequent Preheat Period

0.7

Start Period

1.2

Interrupt Period

5.7

RX/CX Charging Current

–24

–28

–33

µA

RX/CX Open Circuit Voltage

VCC < Start-up threshold

0.4

0.7

1.0

RX/CX Maximum Voltage

7.0

7.3

7.7

Input Bias Current

Voltage at CRAMP = 1.2V

0.1

µA

Preheat Lower Threshold

1.05

1.22

1.36

Preheat Upper Threshold

4.2

4.7

5.1

Interrupt Recovery Threshold

1.05

1.22

1.36

Start Period End Threshold

6.05

6.6

7.35

Interrupt Input (INTERRUPT)

Interrupt Threshold

1.1

1.22

1.4

Input Bias Current

0.1

µA

RSET Voltage

2.4

2.5

2.6

OVP Comparator (PVFB/OVP)

OVP Threshold

2.63

2.73

2.83

Hysteresis

0.18

0.23

0.27

Propagation Delay

1.4

µs

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