IX9907

4

www.ixysic.com

R02

1.4 Electrical Characteristics

1.4.1 Power Supply

1.4.2 Internal Voltage Reference

1.4.3 PWM Section

1.4.4 Current Sense

1.4.5 Soft Start

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

Supply Current in Normal Operation

Power Switch OFF

-1.8

2.9

mA

-

17

18

19

V

-

9.8

10.5

11.2

V

-

-7.5

-

V

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

Internal Reference Voltage

4.8

5

5.2

V

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

VR Pull-Up Resistor

-

11

19

27

k



PWM-OP Gain

-

2.95

3

3.05

-

Offset for Voltage Ramp

-

0.7

0.77

0.85

V

Maximum On-Time in Normal Operation

-

22

30

41

s

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

Current Sense Threshold

-

0.97

1.03

1.09

V

Leading Edge Blanking Time

-

270

450

630

ns

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

Soft-Start Time

-

8.5

12

-

ms

Soft-Start Time Step

-

-3

-

ms

Internal Regulation Voltage at First Step

-

-1.76

-

V

Internal Regulation Voltage Step at Soft Start

-

-0.56

-

V