N3856P 반도체 회로 부품 판매점
Synchronous Rectification Controller
|
|
 NIKO-SEM |
NIKO-SEM Synchronous Rectification Controller N3856V
N3856P
GENERAL DESCRIPTION
The N3856 is a low cost , high efficiency, full
featured ,synchronous re ctification control ler
that specifically des igned for the synchronous
rectification applications of the Flyback AC/DC
PWM mode switching power supply .
The N3856 is included a totem pole output
ideally suited for driving a synchronous rectifi-
cation power MOSFET . 2 way of the current
detect provided for wide applications by any
continuous or disco tinuous mode operating
(patent pending).In cont inuous mode operatin-
g, it included a timi ng control to adjust
maximum turn-on duty to allow the designer to
determine the optimal condition for the best
efficiency by the external resistor and
capacitor. In disconti nuous mode operating, it
included a very sensitive current
detector
(about 20mV) to cont rol the synchronous
rectification MOSFET, avoid happening a large
reverse current via the synchronous
rectification MOSFET to damage the device.
FEATURES
▲High efficiency operating.
▲Adjustable Max. duty cycle designed.
▲Decrease areas of heatsink or PCB.
▲Solved heat dissipation.
▲Sensitive current detecter(about 20mV)
▲Suited for continuous and discontinuous
mode operation.
▲Auto frequency tracking with PWM
frequency.
▲Suited for fixed or variable frequency
▲SOIC-8 and DIP-8 package.
APPLICATION
■Flyback AC/DC power supply
DEVICE SELECTION GUIDE
DIP- 8
N3856PG
SOIC- 8
N3856VG
ABSOLUTE MAXIMUM RATING
PARAMETERS SYMBOL
Vcc to GND
Surge Voltage of VCC(below 200nS)
Drain to Other Pin
Power Dissipation at Ta = 25 ,Derate 8mW/ for Ta
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 sec
25
VCC
VCC(surge)
PD
Tj
TSTG
TLEAD
REV : 1.1
1
LIMITS
-0.3 to 30
45
180
725
-40 to +150
-65 to +150
300
UNITS
V
Vp-p
V
mW
DEC-14-2004
http://www.Datasheet4U.com
NIKO-SEM Synchronous Rectification Controller N3856V
N3856P
ELECTRICAL CHARACTERISTICS (TC = 25 °C)
PARAMETER
TEST CONDITIONS
Supply Voltage
Supply Current
GATE Sink Current
GATE Source Current
Rise Time
Fall Time
Delay Time
Max Duty Cycle
Vcc
CL= 1.0nF
CL= 1.0nF
LIMITS
MIN TYP
7 12
- 4.5 -
1
1
40
40
200
90 95
MAX
30
300
UNIT
V
mA
A
A
nS
nS
nS
%
BLOCK DIAGRAM
VCC
PGND
D
10K
RT/CT
DRAIN
OSC
1/3 VCC
COMP.
BUFFER
DRIVER
20mV
ADJ.
SLOPE CURRENT DETECTER
GND
Aout
GATE
BIAS
REV : 1.1
2 DEC-14-2004
|
PDF 파일 내의 페이지 : 총 13 페이지
제조업체: NIKO-SEM
( niko-sem )
N3856P controller
데이터시트 다운로드 :
[ N3856P.PDF ]
[ N3856P 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
N3856P
Synchronous Rectification Controller - NIKO-SEM
N3856V
Synchronous Rectification Controller - NIKO-SEM