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Номер в каталоге
Компоненты Описание
YD3842 Просмотр технического описания (PDF) - Unspecified
Номер в каталоге
Компоненты Описание
производитель
YD3842
CURRENT MODE PWM CONTROL CIRCUITS
Unspecified
YD3842 Datasheet PDF : 4 Pages
1
2
3
4
YOUDA INTEGRATED CIRCUIT
YD3842
Current Sense Section
Gain
Gv
(note 3, 4)
2.85 3 3.15 V/V
Maximum Input Signal
PSRR
Input Bias Current
V
I(MAX)
l
BIAS
Vpin 1=5V(note 3)
12
≤
Vcc
≤
25V
0.9
1
1.1
V
70
dB
-2 -10
μ
A
Delay to Output
Vpin 3=0 to 2V
150 300 ns
Output Section
Output Low Level
V
OL
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
V
OH
lsource=200mA
12 13.5
V
Tj=25
℃
, C
L
=1nF
t
R
(note 2)
50 150 ns
t
F
Tj=25
℃
, C
L
=1nF(note 2)
50 150 ns
Vcc=5V, lsink=10mA
0.7 1.2 V
Under-Voltage lockout Output Section
Start Threshold
V
TH(ST)
Min. Operating Voltage
V
OPR
(min
)
After Turn On
14.5 16 17.5 V
8.5 10 11.5 V
PWM Section
Maximum Duty Cycle
Minimum Duty Cycle
Total Standby Current
D
(MAX)
D
(MIN)
95 07 100 %
0
%
Start-up Current
Operating Supply
Current
l
ST
Icc
(OPR)
Vpin 2=Vpin 3=0V
0.5
1
mA
11 17 mA
Vcc Zener Voltage
Vz
Icc=25mA
34
V
APPLICATION CIRCUIT
Error Amp
Adjust
RT
1
8
2
7
3
6
4
5
CT
Vref
A
VCC
1κΩ
/1W
OUTPUT
WuXi YouDa Electronics Co., Ltd
3 of 4
Website: www.e-youda.com
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