SD4844 データシートの表示（PDF） - Silan Microelectronics
部品番号
コンポーネント説明
メーカー
SD4844 Datasheet PDF : 11 Pages
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SD4840/4841/4842/4843/4844
Characteristics
Built-in Soft Start Time
Current Limit
SD4840P67K65
Peak Current
Limit
SD4841P67K65
SD4842P67K65
SD4843P67K65
SD4844P67K65
Burst mode
Burst Mode High Voltage
Burst Mode Low Voltage
Protection Section
Overvoltage Protection
Thermal Shutdown
Leading-edge Blanking Time
Total Standby Current
Start Current
Supply Current (Control Part)
Symbol
Test conditions
ts VFB=4V
Iover Max. inductor current
VBURH
VBURL
Vovp
Tsd
TLEB
Istart
Iop
VCC=11V
VCC=12V
PIN CONFIGURATION
Min.
10
Typ.
15
Max.
20
Unit
ms
0.53 0.60 0.67
0.67 0.75 0.83
0.80 0.90 1.00
A
1.10 1.20 1.30
1.35 1.50 1.65
0.4
0.5
0.6
V
0.25 0.35 0.45
V
18
19
--
V
125 140
--
°C
200
--
--
ns
--
6
20
μA
1
3
5
mA
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6,7,8
Pin Name
SGND
PGND
VCC
FB
NC
Drain
I/O
Function description
-
Ground for control part.
-
MOSFET Ground.
-
Power supply pin.
I/O Feedback input pin.
-
Not connected.
O Drain pins.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: //www.silan.com.cn
REV:1.2 2008.12.17
Page 5 of 11
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