YD3843 datasheet(3/4 Pages) YOUDA

Part #	YD3843

Description	CURRENT MODE PWM CONTROL CIRCUITS

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Manufacturer	YOUDA [Wuxi Youda electronics Co.,LTD]

Direct Link	http://www.e-youda.com/

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YOUDA INTEGRATED CIRCUIT

YD3843

Output Source

Current

lsource

Vpin 2=2.3V, Vpin

1=5V

-0.5

-0.8

mA

Vout High

VOH

Vpin 2=2.3V, RL=15kΩ

to GND

5

6

V

Vout Low

VOL

Vpin 2=2.7V, Vpin

1=1.1V

0.7

1.1

V

Current Sense Section

Gain

Gv

(note 3, 4)

2.85

3

3.15

V/V

Maximum Input

Signal

VI(MAX)

Vpin 1=5V(note 3)

0.9

1

1.1

V

PSRR

12≤Vcc≤25V

70

dB

Input Bias Current

lBIAS

-2

-10

μA

Delay to Output

Vpin 3=0 to 2V

150

300

ns

Output Section

lsink=20mA

0.1

0.4

V

Output Low Level

VOL

lsink=200mA

1.5

2.2

V

lsource=20mA

13

13.5

V

Output High Level

VOH

lsource=200mA

12

13.5

V

Rise Time

tR

Tj=25℃, CL=1nF

(note 2)

50

150

ns

Fall Time

tF

Tj=25℃, CL=1nF(note 2)

50

150

ns

UVLO Saturation

Vcc=5V, lsink=10mA

0.7

1.2

V

Under-Voltage Lockout Output Section

Start Threshold

VTH(ST)

7.8

8.4

9.0

V

Min. Operating

Voltage

After Turn On

VOPR(min)

7.6

8.0

8.4

V

PWM Section

Maximum Duty

Cycle

D(MAX)

95

07

100

%

Minimum Duty

Cycle

D(MIN)

0

%

Total Standby Current

Start-up Current

lST

0.5

1

mA

Operating Supply

Current

Icc(OPR)

Vpin 2=Vpin 3=0V

11

17

mA

Vcc Zener Voltage

Vz

Icc=25mA

34

V

WuXi YouDa Electronics Co., Ltd

3 of 4

Website: www.e-youda.com

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