3843CMTR-E1 datasheet(6/13 Pages) BCDSEMI

Part #	3843CMTR-E1

Description	CURRENT MODE PWM CONTROLLER

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Manufacturer	BCDSEMI [BCD Semiconductor Manufacturing Limited]

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CURRENT MODE PWM CONTROLLER

AP384XC

Data Sheet

6

Sep. 2006 Rev. 1. 1

BCD Semiconductor Manufacturing Limited

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

REFERENCE SECTION

Reference Output Voltage

VREF

TJ=25

oC, I

REF=1mA

4.90

5.00

5.10

V

Total Output Variation

Line, Load, Temp.

4.82

5.18

V

Line Regulation

∆V

REF

12V

≤ V

CC ≤25V

4

15

mV

Load Regulation

∆V

REF

1mA

≤ I

REF ≤20mA

4

15

mV

Short Circuit Output Current

ISC

TA=25

oC

-100

-180

mA

Temperature Stability

0.2

0.4

mV/oC

OSCILLATOR SECTION

Oscillation Frequency

f

TJ=25

oC

47

52

57

KHz

Oscillator Amplitude

VOSC

Pin 4, peak to peak (Note 6)

1.7

V

Temperature Stability

(Note 6)

2.5

%

Voltage Stability

12V ≤ VCC ≤ 25V

0.2

1

%

Discharge Current

Vpin 4 =2V(Note 7)

8.5

9.5

10.5

mA

ERROR AMPLIFIER SECTION

Input Voltage

VI

Vpin 1=2.5V

2.45

2.50

2.55

V

Output Sink Current

ISINK

Vpin1=1.1V

5

8

mA

Output Source Current

ISOURCE

Vpin1=5V

-0.5

-0.8

mA

High Output Voltage

VOH

RL=15k

Ω to GND

5

7

V

Low Output Voltage

VOL

RL=15k

Ω to pin 8

0.7

1.1

V

Voltage Gain

2V

≤ V

O ≤ 4V

65

90

dB

Power Supply Rejection Ratio

PSRR

12V

≤ V

CC ≤ 25V

60

70

dB

CURRENT SENSE SECTION

Maximum Input Signal

VI(MAX)

Vpin1=5V(Note 4)

0.9

1

1.1

V

Gain

GV

(Note 4, 5)

2.85

3

3.15

V/V

Power Supply Rejection Ratio

PSRR

12V

≤ V

CC ≤ 25V (Note 4, 6)

70

dB

Delay to Output

Vpin3 = 0 to 2V (Note 6)

150

300

ns

Input Bias Current

IBIAS

-3

-10

µA

OUTPUT SECTION

Low Output Voltage

VOL

ISINK = 20mA

0.1

0.4

V

ISINK = 200mA

1.4

2.2

V

High Output Voltage

VOH

ISOURCE = 20mA

13

14

V

ISOURCE = 200mA

12

13

V

Rise Time

tR

TJ=25

oC, C

L=1nF (Note 6)

50

150

ns

Fall Time

tF

TJ=25

oC, C

L=1nF (Note 6)

50

150

ns

(VCC=15V, RT=10kΩ CT=3.3nF, TA= -40 to 85

oC, unless otherwise specified.)

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