YD3843 Datasheet, PDF (3/4 Pages) Wuxi Youda electronics Co.,LTD – CURRENT MODE PWM CONTROL CIRCUITS

YOUDA INTEGRATED CIRCUIT
YD3843
Output Source
Vpin 2=2.3V, Vpin
lsource
-0.5 -0.8
mA
Current
1=5V
Vpin 2=2.3V, RL=15kΩ
Vout High
VOH
5
6
V
to GND
Vout Low
Vpin 2=2.7V, Vpin
VOL
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
PSRR
Input Bias Current
VI(MAX)
lBIAS
Vpin 1=5V(note 3)
12≤Vcc≤25V
0.9
1
1.1
V
70
dB
-2 -10 μA
Delay to Output
Vpin 3=0 to 2V
150 300 ns
Output Section
Output Low Level
VOL
lsink=20mA
lsink=200mA
0.1 0.4 V
1.5 2.2 V
Output High Level
Rise Time
Fall Time
UVLO Saturation
lsource=20mA
13 13.5
V
VOH
lsource=200mA
12 13.5
V
Tj=25℃, CL=1nF
tR
(note 2)
50 150 ns
tF
Tj=25℃, CL=1nF(note 2)
50 150 ns
Vcc=5V, lsink=10mA
0.7 1.2 V
Under-Voltage Lockout Output Section
Start Threshold
VTH(ST)
Min. Operating
Voltage
VOPR(min)
After Turn On
7.8 8.4 9.0 V
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
Operating Supply
Current
lST
Icc(OPR)
Vpin 2=Vpin 3=0V
0.5
1
mA
11
17 mA
Vcc Zener Voltage
Vz
Icc=25mA
34
V
WuXi YouDa Electronics Co., Ltd
3 of 4
Website: www.e-youda.com