首页 > 产品中心Secondary Side Regulation Green Mode PWM Controller
Part No.
Features
Function
VCC
UVLO (Typ.)
IST
CS(V)
Duty Cycle
FOSC
Package
Max.
VTH(ST)
VOPR
Typ.
Typ.
Max.
Green
Typ.
UC3800
LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
* Dynamic peak current limiting for constant output power
* OTP,OLP,OVP, LNO-OV, Brownout and VDD clamp for higher security
* Fixed switch frequency 65kHz
* Low start-up current
* Cycle-by-cycle Current Limiting
Flyback Converters, HV Start and build in OLP,UVLO,OCP, SCP, LEB.
30.0V
13.0V
7.0V
2uA
0.95V
85%
VFB=3.5V
SOP-8
22KHz
62KHz
UC3830G*
Power Saving PWM with frequency modulation for EMI reducing
Flyback Converters, Hopping Technology
& Frequency Burst→PFM→PWM,
Fixed Frequency, 300mA Driving
Capability and build in OVP,OLP,UVLO,
OCP, SCP, LEB, OTP, Soft Start Etc.
30.0V
16.0V
10.0V
5uA
0.85V
75%
Internal Fixed
DIP-8 SOT-26
20KHz
65KHz
UC3837
Low Cost Power-Saving Mode PWM Controller for Flyback Converters
* Dynamic peak current limiting for constant output power
* OTP,OLP,OVP and VDD clamp for higher security
* Fixed switch frequency 65kHz
* Low start-up current
* Cycle-by-cycle Current Limiting
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start, OTP, BNO Etc.
23.0V
14.5V
8.5V
5uA
0.65V
75%(Typ)
VFB=3.5V
SOT-26
22KHz
65KHz
UC3833L
ADVANCED GREEN-MODE PWM CONTROLLER WITH FREQUENCY TRIPLE FOR PEAK POWER
* Frequency triple for peak power (195kHz)
* Adjustable soft start time
* Adjustable OLP (over load protection) delay timer(automatic recovery)
* LEB (Leading-Edge Blanking) on CS Pin
* Current mode control with Green Mode
Operation out pin clamping
Flyback Converters,and build in OVP,OLP sense by CT pin,UVLO,OCP, SCP, LEB, Soft Start, OTP Etc.
32.0V
20.0V
8.0V
2uA
0.92V
90%(Typ)
-
SOT-26
20KHz
65KHz
UC3837L
Low Cost Power-Saving Mode PWM Controller for Flyback Converters with latched shut down
* Dynamic peak current limiting for constant output power
* OLP with automatic recovery
* OTP and OVP
* VDD clamp for higher security
* Low start-up current
* Cycle-by-cycle current limiting
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start, OTP, BNO Etc.
30.0V
20.0V
8.0V
2uA
0.92V
90%(Typ)
VFB=3.5V
SOT-26
20KHz
65KHz
UC3839*
Power-Saving Mode PWM Controller with BNO And OTP Protection
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM,
BNO,OTP Protection Pin, Adj OVP, OCP Pin and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start, Etc.
27.0V
16.0V
7.5V
9uA
0.85V
80%
Internal Fixed
DIP-8 SOT-26
21.5KHz
65KHz
UB3846*
Power-Saving Mode PWM Controller
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM,
OVP,OLP,OTP,UVLO,OCP, SCP, LEB, Etc.
25.0V
16.3V
11.7V
5uA
1.0V
80%
RI=95KΩ
SOP-8 SOT-26
15KHz
70KHz
UB3846B*
Power-Saving Mode PWM Controller
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin.
25.0V
16.3V
11.7V
5uA
1.0V
80%
RI=95KΩ
SOP-8
15KHz
70KHz
UC3848
High Performance Power-Saving Mode PWM Controllers
* Soft Start
* Over Temperature Protection
* Overload Protection
* Over Voltage Protection
* Leading Edge Blanking
* Cycle-by-Cycle Current Limiting
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc.
30.0V
14.2V
8.2V
22uA
0.86V
80%
VFB=4.0V
DIP-8 SOP-8
20KHz
68KHz
UC3849*
Power-Saving Mode PWM Controllers
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin, Frequency By RI Pin.
36.0V
16.5V
10.5V
4uA
0.86V
85%
RI=100KΩ
DIP-8 SOP-8
22KHz
65KHz
UC3849B
LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
* UTC proprietary frequency hopping technology for Improved EMI performance.
* Power-saving mode for high light-load and standby efficiency
* Soft Start
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OLP,OVP and VDD clamp for higher security
* Programming OTP for higher security
* Fixed switch frequency 65kHz
* Gate output voltage clamped at 15V
* Low start-up current
* Cycle-by-cycle Current Limiting
* Under voltage lockout (UVLO)
* Few external components required
Flyback Converters, Hopping Technology & Frequency Burst→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc.
36.0V
16.5V
8.0V
2uA
0.92V
90%
VFB=3.5V
DIP-8 SOP-8
20KHz
65KHz
UC3852*
PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Standby and Short Circuit Protection
Flyback Converters, Hopping Technology & Frequency Burst→PWM, HV Start and build in OLP,UVLO,OCP, SCP, LEB, .
16.0V
12.8V
7.8V
20uA*
0.92V
87%
Internal Fixed
DIP-8 SOP-8
42/65/103 KHz
UC3856
Low Cost Power-Saving Mode PWM Controller For Fly-Back Converters
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OTP,OLP,OVP and VDD clamp for higher security
* High efficiency HV start
* Cycle-by-cycle current limiting
* Few external components required
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, HV Start and build in OLP,UVLO,OCP, SCP, LEB.
30.0V
13.0V
6.5V
20uA
0.65V
75%
RI=100KΩ
SOT-26
22KHz
62KHz
UC3856L**
-
-
-
-
-
-
-
-
-
SOT-26
-
-
UC3863
Low Cost Power-Saving Mode PWM Controller for Flyback Converters
* Built-in synchronized slope compensation
* OTP,OLP,OVP and VDD clamp for higher security
* Programmable PWM Frequency
* Cycle-by-cycle Current Limiting
* Few external components required
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc.
30.0V
14.0V
7.5V
5uA
0.65V
75%
RI=100KΩ
DIP-8 SOP-8 SOT-26
22KHz
65KHz
UC3863A
* UTC proprietary frequency hopping technology for Improved EMI performance.
* Power-saving mode for high light-load and standby efficiency
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OLP with automatic recovery
* OTP and OVP with automatic recovery
* VDD clamp for higher security
* Programmable PWM Frequency
* Low start-up current
* Cycle-by-cycle Current Limiting
* Under voltage lockout (UVLO)
* Few external components required
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc.
35.0V
18.0V
7.0V
2uA
0.65V
90%
RI=100KΩ
HSOP-8 SOP-8 SOT-26
20KHz
65KHz
UC3863L
Low Cost Power-Saving Mode PWM Controller for Flyback Converters with latched shut down
* OLP with automatic recovery
* OTP and OVP with latch shut down
* Programmable PWM Frequency
* Low start-up current
* Cycle-by-cycle Current Limiting
* Few external components required
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, OTP, Soft Start Etc.
32.0V
20.0V
8.0V
2uA
0.92V
90%
RI=100KΩ
SOT-26
20KHz
65KHz
UC3868*
Power-Saving Mode PWM Controllers
Flyback Converters,
Frequency Burst→PFM→PWM, and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin, Frequency By RI Pin.
36.0V
16.5V
10.5V
4.0uA
0.86V
85%
RI=100KΩ
DIP-8 SOP-8
22KHz
65KHz
UC3869
HIGH VOLTAGE GREEN MODE PWM CONTROLLER
* High voltage startup
* Power on soft start reducing MOSFET Vds stress
* Efficiency and minimum standby power
* Audio noise free operation
* Fixed 65KHZ switching frequency
* UVLO,OCP,OLP,OTP,OVP
Flyback Converters, HV Start and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin
35.0V
19.0V
7.0V
2uA
0.92V
90%
VFB=3.0V
DIP-8 SOP-8
20KHz
65KHz
UC3869A
HIGH VOLTAGE GREEN MODE PWM CONTROLLER
* High voltage startup
* Power on soft start reducing MOSFET Vds stress
* Efficiency and minimum standby power
* Audio noise free operation
* Fixed 65 kHz switching frequency
* UVLO,OCP,OLP,OTP,OVP
Flyback Converters, HV Start and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin
30.0V
18.0V
7.0V
2uA
0.92V
90%
VFB=3.0V
DIP-8 SOP-8
20KHz
65KHz
UC3873
Low Cost Power-Saving Mode PWM Controller for Flyback Converters
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OLP, OVP and VDD clamp for higher security
* Programming OTP for higher security
* Cycle-by-cycle Current Limiting
* Few external components required
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM,
OTP sense by RT pin, Fixed Frequency
and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc.
30.0V
13.0V
8.5V
5uA
0.75V
75%
Internal Fixed
SOT-26
22KHz
65KHz
UC3873A
Low Cost Power-Saving Mode PWM Controller for Flyback Converters
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OLP with automatic recovery
* OTP and OVP( automatic recovery)
* Programming OTP for higher security
* Cycle-by-cycle current limiting
* Few external components required
Flyback Converters,OTP sense by RT pin, Fixed Frequency
and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc.
35.0V
18.0V
7.0V
2uA
0.92V
90%
VFB=3.5V
SOT-26
20KHz
65KHz
UC3873L
Low Cost Power-Saving Mode PWM Controller for Flyback Converters with latch shut down
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OLP with automatic recovery
* OTP and OVP( UC3873L with latch shut down)
* Programming OTP for higher security
* Cycle-by-cycle current limiting
* Few external components required
Flyback Converters, OTP sense by RT pin, Fixed Frequency
and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc.
35.0V
18.0V
7.0V
2uA
0.92V
90%
VFB=3.5V
SOT-26
20KHz
65KHz
UC3873B
Low Cost Power-Saving Mode PWM Controller for Flyback Converters
* Built-in synchronized slope compensation
* OLP,OVP and VDD clamp for higher security
* -500/+500mA gate driver
* Programming OTP for higher security
* Cycle-by-cycle Current Limiting
* Few external components required
Flyback Converters, Hopping Technology & Frequency Burst→PFM→PWM,
OTP sense by RT pin, Fixed Frequency
and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc.
30.0V
13.0V
7.0V
2.5uA
0.95V
78%
Internal Fixed
SOT-26
22KHz
65KHz
UC3873HL
Low Cost Power-Saving Mode PWM Controller for Flyback Converters with latch shut down
* Built-in synchronized slope compensation
* OLP with automatic recovery
* OTP and OVP( UC3873HL with latch shut down)
* Programming OTP for higher security
* Fixed switch frequency 130kHz
* Cycle-by-cycle current limiting
* Few external components required
Flyback Converters, OTP sense by RT pin, Fixed Frequency
and build in OVP,OLP,UVLO,OCP, SCP, LEB, Soft Start Etc.
35.0V
18.0V
7.0V
2uA
0.92V
90%
VFB=3.5V
SOT-26
20KHz
130KHz
UC3874A*
-
-
-
-
-
-
-
-
-
SOP-8
-
-
UC3875
LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OTP,OLP,OVP and VDD clamp for higher security
* Programmable PWM Frequency
* Cycle-by-cycle Current Limiting
* Few external components required
Flyback Converters, HV Start and build in OLP,UVLO,OVP,LEB, Frequency By RI Pin.
30.0V
20.0V
8.0V
250uA
(Max)
0.92V
90%
RI=100KΩ
SOP-8
20KHz
65KHz
UC3875A
LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS with latch up
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope FBensation
* OTP,OLP,OVP and VDD clamp for higher security
* Programmable PWM Frequency
* Cycle-by-cycle Current Limiting
* Few external FBonents required
Flyback Converters, HV Start and build in OLP,UVLO,OVP,LEB, Frequency By RI Pin.
35.0V
18.0V
7.0V
750uA
(Max)
0.92V
90%
RI=100KΩ
SOP-8
20KHz
65KHz
UC3875B*
-
-
-
-
-
-
-
-
-
SOP-8
-
-
UC3875L
LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS with latch up
* Built-in synchronized slope compensation
* OLP with automatic recovery
* OTP and OVP with latch up
* VDD clamp for higher security
* Programmable frequency
* Cycle-by-cycle Current Limiting
* Few external components required
Flyback Converters, HV Start and build in OLP,UVLO,OVP,LEB, Frequency By RI Pin.
32.0V
20.0V
8.0V
250uA
(Max)
0.92V
90%
RI=100KΩ
SOP-8
20KHz
65KHz
UC3876A*
-
-
-
-
-
-
-
-
-
-
-
-
UC3893*
LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
Flyback Converters, and build in OVP,OLP,UVLO,OCP, SCP, LEB, and OTP sense by RT pin
30.0V
13.0V
8.0V
2.5uA
0.95V
85%
VFB=3.5V
SOP-8
22KHz
65KHz
