2AS01 datasheet(17/24 Pages) INFINEON

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ICE2AS01/S01G

ICE2BS01/S01G

Electrical Characteristics

Datasheet

30 Jun 2006

4.3.4

Protection Unit

4.3.5

Current Limiting

Frequency Ratio fosc1/fosc2

ICE2AS01/G

4.5

4.65

4.9

Frequency Ratio fosc3/fosc4

ICE2BS01/G

3.18

3.35

3.53

Max Duty Cycle

Dmax

0.67

0.72

0.77

Min Duty Cycle

Dmin

VFB < 0V

PWM-OP Gain

3.45

3.65

3.85

Max. Level of Voltage Ramp

VMax-Ramp

-0.85

VFB Operating Range Min Level VFBmin

0.3

VFB Operating Range Max level VFBmax

4.6

Feedback Resistance

RFB

3.0

3.7

4.9

Ω

Soft-Start Resistance

RSoft-Start

Ω

Parameter

Symbol

Limit Values

Unit

Test Condition

min.

typ.

max.

Over Load & Open Loop

Detection Limit

VFB2

4.65

4.8

4.95

VSoftS > 5.5V

Activation Limit of Overload &

Open Loop Detection

VSoftS1

5.15

5.3

5.46

VFB > 5V

Deactivation Limit of

Overvoltage Detection

VSoftS2

3.88

4.0

4.12

VFB > 5V

VCC > 17.5V

Overvoltage Detection Limit

VVCC1

16.5

17.2

VSoftS < 3.8V

VFB > 5V

Latched Thermal Shutdown

TjSD

130

140

150

°C

guaranteed by design

Spike Blanking

tSpike

-5

-µs

Parameter

Symbol

Limit Values

Unit

Test Condition

min.

typ.

max.

Peak Current Limitation (incl.

Propagation Delay Time)

(see Figure 7)

Vcsth

0.95

1.00

1.05

dVsense / dt = 0.6V/µs

Leading Edge Blanking

tLEB

-220

-ns

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