SD4844 Silan Microelectronics, SD4844 Datasheet - Page 4

• Manufacturer Part Number: SD4844
• Description: (SD4840 - SD4844) Current Mode PWM Controller
• Manufacturer: Silan Microelectronics

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HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: //www.silan.com.cn
ELECTRICAL CHARACTERISTICS
Reverse
Transfer
Capacitance
Turn On Delay
Time
Rise Time
Turn Off Delay
Time
Fall Time
Undervoltage Section
Start Threshold Voltage
Stop Threshold Voltage
Oscillator Section
Oscillate Frequency
Frequency Jitter
Frequency Change With
Temperature
Maximum Duty Cycle
Feedback Section
Feedback Source Current
Shutdown Feedback Voltage
Shutdown Delay Current
Characteristics
Characteristics
SD4840P67K65
SD4841P67K65
SD4842P67K65
SD4843P67K65
SD4844P67K65
SD4840P67K65
SD4841P67K65
SD4842P67K65
SD4843P67K65
SD4844P67K65
SD4840P67K65
SD4841P67K65
SD4842P67K65
SD4843P67K65
SD4844P67K65
SD4840P67K65
SD4841P67K65
SD4842P67K65
SD4843P67K65
SD4844P67K65
SD4840P67K65
SD4841P67K65
SD4842P67K65
SD4843P67K65
SD4844P67K65
Symbol
Symbol
t
t
d(OFF) V
F
F
d(ON) V
V
V
D
I
V
C
delay
MOD
I
OSC
start
stop
max
FB
--
t
t
SD
rss
(unless otherwise specified, T
r
f
25°C≤T
0V≤V
5V≤V
V
V
V
GS
DD
DD
DD
DD
=0V, V
=0.5BV
=0.5BV
=0.5BV
=0.5BV
Test conditions
FB
FB
Test conditions
amb
≤3V
≤V
SD
DS
≤+85°C
DSS
DSS
DSS
DSS
=25V, f=1MHz
SD4840/4841/4842/4843/4844
, I
, I
, I
, I
D
D
D
D
=25mA
=25mA
=25mA
=25mA
amb
=25°c)
Min.
±1.5
0.7
5.5
3.5
Min.
11
61
72
--
7
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Typ.
±2.0
Typ.
0.9
6.0
5.0
12
67
±5
77
10
17
30
40
10
12
20
33
40
15
19
25
27
30
55
70
90
10
25
32
42
8
8
3
4
8
REV:1.2
Max.
Max.
±2.5
±10
1.1
6.5
6.5
13
73
82
9
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Page 4 of 11
2008.12.17
Unit
Unit
KHz
KHz
mA
μA
nS
nS
nS
nS
pF
%
%
V
V
V