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PDF SDC4818 Data sheet ( Hoja de datos )
| Número de pieza | SDC4818 | |
| Descripción | Power Supply Pwm Supervisor | |
| Fabricantes | SDC | |
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Datasheet
Power Supply Pwm Supervisor
SDC4818
General Description
Features
The SDC4818 controller is designed for switching mode
power supply for desktop PCs. Utilizing minimum number
Tof external components, the SDC4818 includes all of the
Nfunctions for push-pull and/or half-bridge topology,
decreasing the production cost and PCB space, and
Eincreasing the MTBF for power supply.
MTwo internal TL431 shunt regulators provide stable
CONFIDENTIAL DOCUreference voltage for 3.3V and 5V standby regulator.
Over-voltage/Under-voltage protection for
3.3V/±5V/±12V
Over-power protection
Short-circuit protection
AC input under voltage protection
Power good circuitry
PSON for remote controller
Delay time for PSON and PG signal
Two internal TL431 shunt regulators provide stable
reference voltage for 3.3V and 5V standby regulator
Soft-start and maximum 93% duty cycle
Applications
ATX power supply
SFX(MICRO-ATX) power supply
NLX power supply
SDC
DIP-20
Figure 1. Package Type
December, 2013 Rev. 1.1
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/13
www.sdc-semi.com
1 page  
Datasheet
Power Supply Pwm Supervisor
SDC4818
Absolute Maximum Ratings (NOTE: Stresses greater than those listed under Absolute Maximum Ratings may cause
permanent damage to the device.)
Parameter
TSupply voltage
FB1, FB2 Output
NPG Output
EFB1, FB2 Output
Power dissipation(Ta=25°C)
MPower dissipation(Ta=90°C)
UStorage temperature
CLatch-up test per JEDEC 78
ESD, HBM model per Mil-Std-883, Method 3015
OESD, MM model per JEDEC EIA/JESD22-A115
DThermal Resistance（Junction to Ambient）
Symbol
V CC
V FB
I OUT1
I OUT2
P D1
P D2
T STG
-
HBM
MM
θ JA
Value
12
16
30
30
1.5
0.5
-55~155
200
2000
200
82.5
LTable 2. Absolute Maximum Ratings
IARecommended Operating Conditions
Parameter
Symbol
TSupply voltage
V CC
NOscillation frequency
f OSC
EOperating temperature
T OPR
Min
4.5
60
-40
Max
5.5
70
85
CONFIDTable 3. Recommended Operating Conditions
Unit
V
V
mA
mA
W
W
°C
mA
V
V
℃/W
Unit
V
kHz
°C
SDC
December, 2013 Rev. 1.1
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/13
www.sdc-semi.com
5 Page 
Datasheet
Power Supply Pwm Supervisor
SDC4818
Typical Application
CONFIDENTIAL DOCUMENT
SDC
XC1 104/250V
December, 2013 Rev. 1.1
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
11/13
www.sdc-semi.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet SDC4818.PDF ] | |
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