IL3842 Просмотр технического описания (PDF) - Integral Corp.

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IL3842

Fixed Frequency Current Mode PWM Controller

Integral Corp. 

IL3842

ELECTRICAL CHARACTERISTICS (Vcc=15V unless otherwise noted)

Characteristics

OUTPUT SECTION

Output Voltage

Low State (Sink=20mA, VCC=15V)

(Sink=200mA, VCC=15V)

High State (Sink=20mA, VCC=15V)

(Sink=200mA, VCC=15V)

Output Voltage with UVLO Activated

(VCC=6.0V, ISink,=1.0mA, TA=Tlow to Thigh)

Output Voltage Rise Time

(CL=1.0nF, VCC=15V, TA=Tlow to Thigh)

Output Voltage Fall Time

(CL=1.0nF, VCC=15V, TA=Tlow to Thigh)

ONDERVOLTAGE LOCKOUT SECTION

Startup Threshold (VCC=0V to 25V,TA=Tlow to Thigh)

Minimum Operating Voltage After Turn-On

(VCC=0V to 25V,TA=Tlow to Thigh)

PWM SECTION

Duty Cycle

Maximum (VCC=15V, TA=Tlow to Thigh,RT=10k,CT=3.3nF)

Minimum (VCC=15V, TA=Tlow to Thigh,RT=10k,CT=3.3nF)

TOTAL DEVICE

Power Supply Current

Startup: VCC=14V

VCC=15V Operating

Power Supply Zener Voltage (ICC=25mA, VCC=0 to 40V)

Symbol Min

VOL

VOH

13

12

VOL(UVL

O)

tr

tf

Vth

VCC(min)

14.5

8.5

DCmax 94

DCmin

ICC

Vz

30

NOTES: 1. Vfinal= Vref25 ±( Regline+ Regload)/1000± | Vref70(Vref0)-Vref25 |

Vref25=Vref @ TA=25°C; Vref70=Vref @ TA=70°C; Vref0 =Vref @ TA=0°C.

2. Tlow= 0°C ; Thigh=+70°C

Max Unit

0.4

2.2

V

1.1

V

150

ns

150

ns

17.5

V

11.5

V

0

%

1.0

17

mA

40

V

4

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