3843CMTR-E1 データシートの表示（PDF） - BCD Semiconductor

部品番号

コンポーネント説明

メーカー

3843CMTR-E1

CURRENT MODE PWM CONTROLLER

BCD Semiconductor 

Data Sheet

CURRENT MODE PWM CONTROLLER

Electrical Characteristics (Continued)

AP384XC

Parameter

Symbol

Conditions

UNDER -VOLTAGE LOCKOUT SECTION

Start Threshold

VTH(ST)

AP3842C/AP3844C

AP3843C/AP3845C

Min. Operation Voltage

(After Turn On)

VOPR

(Min.)

AP3842C/AP3844C

AP3843C/AP3845C

PWM SECTION

Max. Duty Cycle

D(Max.)

D(Max.)

AP3842C/AP3843C

AP3844C/AP3845C

Min. Duty Cycle

D(Min.)

TOTAL STANDBY CURRENT SECTION

Start-Up Current

IST

Operating Supply Current

ICC(OPR) Vpin3=Vpin2=0V

Zener Voltage

VZ

ICC=25mA

OVER-TEMPERATURE PROTECT SECTION

Shutdown Temperature

Temperature Hysteresis

TSHUT

THYS

(Note 6)

(Note 6)

Min Typ Max Unit

15

16

17

V

7.8

8.4

9.0

V

8.5

10.0 11.5

V

7.0

7.6

8.2

V

95

97

100

%

46

48

50

%

0

%

50

80

µA

8

12

mA

30

34

V

155

oC

25

oC

Note 4: Parameters are tested at trip point of latch with Vpin2 = 0.

Note 5: Here gain is defined as:

∆VPin 1

A=

, 0 ≤ Vpin3 ≤ 0.8V

∆VPin 3

Note 6: These parameters, although guaranteed, are not 100% tested in production.

Note 7: This parameter is measured with RT=10kΩ to VREF, it contributes 0.3mA of current to the measured value.

So the total current flowing into the CT pin will be 0.3mA higher than the measured value approximately.

4.7k

2N2222

1k

ERROR AMP

ADJUST

4.7k

100k

5k

ISENSE

ADJUST

RT

AP384XC

1 COMP

VREF 8

2 VFB

VCC 7

3 ISENSE OUTPUT 6

0.1µF

4 RT/CT

GND 5

VREF

A

VCC

1K

1W

0.1µF

OUTPUT

Sep. 2006 Rev. 1. 1

CT

Figure 4. Basic Test Circuit

GND

BCD Semiconductor Manufacturing Limited

7

Share Link: