AIC3842CN 查看數據表（PDF） - Analog Intergrations

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AIC3842CN

Current-Mode PWM Controller

Analog Intergrations 

AIC3842

n ELECTRICAL CHARACTERISTICS (Continued)

PARAMETERS

CONDITIONS

MIN. TYP. MAX. UNIT

Current Sense Section

Voltage Amplification

See Note 3 and 4

3

V/V

Current Sense Comparator COMP at 5V, See Note 3

1

V

Threshold

Supply Voltage Rejection

VCC=12V to 25V, See Note 3

70

dB

Ratio

Input Bias Current

-2

µA

Delay Time to Output

150

nS

Output Section

High-Level Output Voltage

Low-Level Output Voltage

Rise Time

Fall Time

ISOURCE=20mA

ISOURCE =200mA

ISINK=20mA

ISINK=200mA

CL=1nF

CL=1nF

Undervoltage Lockout Section

Start Threshold Voltage

Minimum Operating Voltage

after Start-Up

13.5

V

13.4

V

0.1

V

1.5

V

50

nS

50

nS

14.5

16

17.5

V

8.5

10

11.5

V

Pulse-Width-Modulator Section

Maximum Duty Cycle

Minimum Duty Cycle

96

%

0

%

Supply Voltage

Start-Up Current

0.3

0.5

mA

Operating Supply Current

VFB and ISENSE at 0V

12

17

mA

Limiting Voltage

ICC=25mA

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.

4

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