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PDF SDC2921 Data sheet ( Hoja de datos )
| Número de pieza | SDC2921 | |
| Descripción | Voltage Mode PWM Controller | |
| Fabricantes | SDC | |
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 1. - Voltage Mode PWM Controller  Hay una vista previa y un enlace de descarga de SDC2921 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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Datasheet
Voltage Mode PWM Controller
SDC2921
General Description
Features
The SDC2921 is a Pulse–Width Modulation (PWM) control
circuit with complete protection circuits for the SMPS
T(Switching Mode Power Supply). It contains various
Nfunctions, can minimize external components of switching
OCUMEpower supply systems in personal computer.
Complete PWM control and protection circuits
Over voltage protection for 3.3V/ 5V/ 12V/ PT
Under voltage protection for 3.3V/ 5V/ 12V
280ms PG time delay
Open drain power good output
280ms time delay for UVP
Remote ON/OFF function
Built-in soft-start function
Package: DIP-16
Applications
PC power supply
FIDENTIAL DDIP-16
CON Figure 1. Package Type
SDC
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/13
www.sdc-semi.com
1 page  
Voltage Mode PWM Controller
Datasheet
SDC2921
Absolute Maximum Ratings (NOTE: Stresses greater than those listed under Absolute Maximum Ratings may
cause permanent damage to the device.)
Parameter
TSupply voltage
NDrain output voltage
EDrain output current
Power dissipation
MStorage temperature
UESD, HBM model per Mil-Std-883, Method 3015
ESD, MM model per JEDEC EIA/JESD22-A115
Symbol
V CC
VCC1 , V CC2
ICC1, ICC2
Pd
T STG
HBM
MM
Value
5.5
5.5
200
200
-65~150
2000
200
CTable 2. Absolute Maximum Ratings
ORecommended Operating Conditions
DParameter
LSupply voltage
Oscillation frequency
IAOperating temperature
Symbol
V CC
f OSC
T OPR
Min
4.5
55
-10
Max
5.5
65
70
CONFIDENTTable 3. Recommended Operating Conditions
Unit
V
V
mA
mW
°C
V
V
Unit
V
kHz
°C
SDC
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/13
www.sdc-semi.com
5 Page 
Voltage Mode PWM Controller
Datasheet
SDC2921
Typical Application
+12V +5V
NTR1 R3
MER2
VCC +5V
R4
C2 R5
C3
C1
PG
16 15 14 13 12 11 10
9
REMOTE
R6
C4
IAL DOCU+3.3V
1 23 4 5 6 7 8
R7 C5
R12
NT+5V
CONFIDE+12V
R8 VCC
C6
R9
R10
C7
R11 R13
OUT1 OUT2
VCC
SDC
Figure 8. Typical Application
In some application power systems, adding an external resistor (R6) could reduce the peak value spike from the
environments to pin 9 (REM) and avoid pin 9 (REM) damaged by the external noise.
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
11/13
www.sdc-semi.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet SDC2921.PDF ] | |
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