AIC3843

4

PARAMETERS

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Current Sense Section

Voltage Amplification

See Note 3 and 4

2.85

3

3.15

V/V

Current Sense Comparator

Threshold

COMP at 5V, See Note 3

0.9

1

1.1

V

Supply Voltage Rejection

Ratio

70

dB

Input Bias Current

-2

-10

µA

Delay Time to Output

150

300

nS

Output Section

13

13.5

V

High-Level Output Voltage

12

13.4

V

0.1

0.4

V

Low-Level Output Voltage

1.5

2.2

V

Rise Time

50

150

nS

Fall Time

50

150

nS

Under voltage Lockout Section

Start Threshold Voltage

7.8

8.4

9.0

V

7.0

7.6

8.2

V

Minimum Operating Voltage

after Start-Up

Pulse-Width-Modulator Section

Maximum Duty Cycle

95

96

100

%

Minimum Duty Cycle

0

%

Supply Voltage

Start-Up Current

0.3

0.5

mA

Operating Supply Current

V

12

17

mA

Limiting Voltage

30

34

V

Note: 2: Adjust VCC above the start threshold before setting it to 15V.

3. These parameters are measured at the trip point of the latch with VFB at 0V.

4. Voltage amplification is measured between ISENSE and COMP with the input changing from 0V to

0.8V.