UC3842N Просмотр технического описания (PDF) - Philips Electronics

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UC3842N

Current-mode PWM controller

Philips Electronics 

Philips Semiconductors Linear Products

Current-mode PWM controller

Product specification

UC3842

DC AND AC ELECTRICAL CHARACTERISTICS

0≤TJ≤70°C for UC3842; VCC=15V; RT=10kW; CT=3.3nF, unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

Reference section

VOUT

Output voltage

Line regulation

VNOISE

Load regulation

Temp. stability1

Total output variation1

Output noise voltage1

Long-term stability1

Output short-circuit

Output short-circuit

Oscillator section

Initial accuracy

Voltage stability

Temp. stability1

Amplitude

Error amp section

Input voltage

IBIAS

AVOL

Input bias current

Unity gain bandwidth1

Unity gain bandwidth

PSRR Power supply rejection ratio

ISINK

Output sink current

ISOURCE Output source current

VOUT High

VOUT Low

Current sense section

PSRR

Gain 2, 3

Maximum input signal2

Power supply rejection ratio2

IBIAS

Input bias current

Delay to output1

TJ=25°C, IO=1mA

12≤VIN≤25V

1≤IO≤20mA

Line, load, temp.

10Hz≤f≤10kHz, TJ=25°C

TJ=125°C, 1000 Hrs.

TJ=25

-55<TJ≤0°C

TJ=25°C

12≤VCC≤25V

TMIN≤TJ≤TMAX

VPIN 4 peak-to-peak

V Pin 1=2.5V

2≤VO≤4V

TJ=25°C

TMIN<TJ<TMAX

12≤VCC≤25V

VPIN 2=2.7V, VPIN 1=1.1V

VPIN 2=2.3V, VPIN 1=5V

VPIN 2=2.3V, RL=15k to ground

VPIN 2=2.7V, RL=15k to Pin 8

VPIN 1=5V

12≤VCC≤25V

UC3842

Min Typ Max

UNIT

4.90 5.00 5.10

6

20

6

25

0.2 0.4

4.82

5.18

50

5

25

-30 -100 -130

-30 -100 -180

V

mV

mV

mV/°C

V

µV

mV

mA

mA

47 52 57

kHz

0.2 1

%

5

%

1.7

V

2.42 2.50 2.58

-0.3 -2

65 90

0.7 1

0.5

60 70

2

6

-0.5 -0.8

5

6

0.7 1.1

V

µA

dB

MHz

MHz

dB

mA

mA

V

V

2.85 3 3.15

V/V

0.9 1 1.1

V

70

dB

-2 -10

µA

150 300

ns

August 31, 1994

1102

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