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PDF MC3265N6 Data sheet ( Hoja de datos )
| Número de pieza | MC3265N6 | |
| Descripción | Current Mode PWM Controller | |
| Fabricantes | Cystech Electonics | |
| Logotipo |  |
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CYStech Electronics Corp.
Current Mode PWM Controller
Spec. No. : C595N6
Issued Date : 2012.02.23
Revised Date :
Page No. : 1/12
MC3265N6
Description
MC3265 is a highly integrated current mode PWM control IC optimized for high performance low standby
power offline flyback converter applications.
To improve the efficiency, MC3265 works at QR (Quasi-Resonant) mode or fixed frequency(52KHz) while
the loading is high and the line voltage is high or low.
At normal loading, MC3265 works at QR mode and the frequency is limited to 95KHz.
To meet the international power conservation requirements, optimized green mode is integrated to improve
the efficiency at light or no load conditions with no audible noise.
Slope compensation is integrated to ensure the stability at high load. Lead edge blanking is integrated to
prevent the false trigger at the transition of the switch. Soft switching control at the gate drive can improve
the EMI performance of the power supply. The Gate-drive output is clamped at 16V to protect the power
MOS.
Features
●Frequency jitter function to improve EMI performance of power supply
●No-audible-noise green mode Control
● Multi operation mode: QR, fixed-frequency CCM and green mode.
● Internal Slope Compensation
● Low VDD Startup Current and Low Operating Current
● Leading Edge Blanking
● UVLO
● Gate Max Output Voltage Clamp at 16V
● Overload Protection (OLP).
● Over temperature Protection (OTP).
● Line Compensation Over Current Protection (OCP)
Applications
Offline AC/DC flyback converter for
● Battery Charger
● Power Adaptor
● Set-Top Box Power Supplies
● Open-frame SMPS
● PC 5V Standby Power
● TV Power Supplies Standby
MC3265N6
CYStek Product Specification
1 page  
CYStech Electronics Corp.
Spec. No. : C595N6
Issued Date : 2012.02.23
Revised Date :
Page No. : 5/12
Over current threshold voltage at
max. switching on time
VTH_OC_1
Over current protect delay
T_OC_D
GATE OUTPUT
Output low level(Turn-off)
VOL
Output high level(Turn-on)
VOH
Output voltage clamped level
VO_clamp
Output rising time (10%~90%)
Tr
Output falling time(90%~10%)
Tf
DEM Pin
Dem comparator threshold voltage
Vth_dem
Suppression time @ the ringing
stage
T_supp
Timeout after last dem. transistion T_out_dem
Dem. Propagation delay
T_dem_d
Output OVP trigger point
Vth_OVP
Output OVP delay time
T_OVP_de
OTP
Thermal shutdown temperature
Tem_off
FB=3.3V
CS>VTH_OC, FB=3.3V,CL=1nf
@Gate
Io=20mA
Io=20mA
Cl=1nf
Cl=1nf
0.8 0.85
75
V
nS
10V
16
220
70
0.8
V
V
V
nS
ns
75
2.5
5
250
3,75
4
mV
us
us
ns
V
Cycle
145 150 160
℃
MC3265N6
CYStek Product Specification
5 Page 
CYStech Electronics Corp.
Spec. No. : C595N6
Issued Date : 2012.02.23
Revised Date :
Page No. : 11/12
Recommended wave soldering condition
Product
Peak Temperature
Pb-free devices
260 +0/-5 °C
Soldering Time
5 +1/-1 seconds
Recommended temperature profile for IR reflow
Profile feature
Sn-Pb eutectic Assembly
Pb-free Assembly
Average ramp-up rate
(Tsmax to Tp)
3°C/second max.
3°C/second max.
Preheat
−Temperature Min(TS min)
−Temperature Max(TS max)
−Time(ts min to ts max)
100°C
150°C
60-120 seconds
150°C
200°C
60-180 seconds
Time maintained above:
−Temperature (TL)
− Time (tL)
183°C
60-150 seconds
217°C
60-150 seconds
Peak Temperature(TP)
240 +0/-5 °C
260 +0/-5 °C
Time within 5°C of actual peak
temperature(tp)
10-30 seconds
20-40 seconds
Ramp down rate
6°C/second max.
6°C/second max.
Time 25 °C to peak temperature
6 minutes max.
8 minutes max.
Note : All temperatures refer to topside of the package, measured on the package body surface.
MC3265N6
CYStek Product Specification
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MC3265N6.PDF ] | |
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