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EnglishSFL320 will clear external EA Feedback Network before IC power on. The IC also has Soft Start control to soften the stress on the MOFET during power on period.
SFL320
Transition Mode PFC Controller
Built-in Soft Start and Very Low Startup Current
Under Voltage Lockout with 7.7V Hysteresis
VCC Over Voltage Protection
Clear External EA Feedback Network before Power On
Transition Mode (TM)Operation
Highly Linear Analog Multiplier
Proprietary "Frequency Adjusting "for Higher PF and Low THD
3.3us Min, OFF Time
270KHz Max Frequency Clamp
Trimmed 1.5% Internal Voltage Reference
Restart Timer for Stand-anlone Applications
Built-in leading edge blanking (LEB)
10V to 32V Wide Range of VCC Voltage
800mA Drive Capability
Application:
LED Lighting Application
Single Stage High PF Flyback AC/DC SMPS
SFL320 is a high power factor flyback PWM controller special for LED lighting applications. The IC adopts transition mode (TM) operation for high efficiency and low EMI.
SFL320 will clear external EA Feedback Network before IC power on. The IC also has Soft Start control to soften the stress on the MOFET during power on period.
In SFL320, a highly linear analog multiplier is integrated to achieve low THD and high power factor. The zero current detector (ZCD) ensures TM operation. A restart timer is for stand alone applications. The IC also has the function of Min OFF time and Max Frequency clamp to limits power MOS Vds splike when LED output is short.
In SFL320, the proprietary "frequency adjusting" can help to improve THD performance, which ensures audio noise free operation. A VCC Over Voltage Protection (VCC OVP) is integrated to improve system reliability.
SFL320 integrates functions and protections of Under Voltage Lockout (UVLO), VCC Over Voltage Protection (OVP), Soft start Control, cycle-by-cycle Current Limiting (OCP), GD Clamping, VCC Clamping, Leading Edge Blanking (LEB).
In SFL320, VCC OVP is auto-recovery mode protection.
SFL320 is available in SOP8 packages.
ID | 型号 | 拓扑结构 | 恒流精度 | 最大输出功率</h2> | 光度控制 | 功率因数校正 | 即亮 | 最大电流</h2> | 封装 |
1 | SFL100 | Secondary Side CC & CV | ±2% | - | - | - | - | - | SOT23-6 |
2 | SFL320 | Single-Stage PFC | ±3% | 60w | - | Built-in | - | - | SOP8 |
3 | SFL330 | Single-Stage PFC | ±3% | 60w | - | Built-in | - | - | SOP8 |
4 | SFL678 | NC-Cap/PSR™ | ±3% | 25w | Analog/PWM | - | - | - | SOT23-6 |
5 | SFL600 | NC-Aux/PSR™ | ±4% | 3.5w | - | - | YES | - | TO-92 |
6 | SFL710 | super-PFC/Buck™ | ±4% | 30w | - | Built-in | - | - | SOT23-6 |
7 | SFL750 | super-PFC/Buck™ | ±4% | 60w | - | Built-in | YES | 300mA | SOP8 |
8 | SFL760 | super-PFC/Buck™ | ±4% | 9w | - | Built-in | YES | - | SOP8 |
9 | SFL770 | super-PFC/Buck™ | ±4% | 13w | - | Built-in | YES | - | DIP8 |
10 | SFL780 | super-PFC/Buck™ | ±4% | 20w | - | Built-in | YES | - | DIP8 |
11 | SFL950 | super-PFC/PRS™ | ±4% | 30w | - | Built-in | - | - | SOT23-6 |
12 | SFL980 | super-PFC/PSR™ | ±4% | 30w | - | Built-in | YES | - | SOP8 |
13 | SFL900B | super-PFC/PSR™ | ±4% | 60w | - | Built-in | - | - | SOP8/DIP8 |
14 | SFL611 | NC-Aux/PSR™ | ±5% | 3.5w | - | - | - | - | SOP8 |
15 | SFL530 | NC-Aux/QR-Bulk™ | ±5% | 4.5w | - | - | YES | - | TO-92 |
16 | SFL830 | Boost-PFC/PSR Combo™ | ±3% | 60w | - | Built-in | - | - | SOP8 |
17 | SFL850 | Boost-PFC/PSR Combo™ | ±3% | 60w | - | Built-in | - | - | SOP8 |
18 | SFL560 | NC-Aux/QR-Buck™ | ±4% | 180mA | - | - | - | - | DIP8 |
19 | SFL730 | super-PFC/Buck™ | ±4% | - | - | Built-in | - | 150mA | DIP8 |
20 | SFL740 | super-PFC/Buck™ | ±4% | - | - | Built-in | - | - | DIP8 |
21 | SFL580 | NC-Aux/QR-Buck™ | ±4% | 180mA | PWM | - | YES | - | DIP8 |
22 | SFL900C | super-PFC/PSR™ | ±4% | 60w | - | Built-in | - | - | SOP8/DIP8 |
23 | SFL658 | NC-Aux/PSR-Buck™ | ±4% | 15w | - | - | - | - | DIP8 |
24 | SFL658V | NC-Aux/PSR-Buck™ | ±5% | 10w | - | - | - | 1A | DIP8 |
25 | SFL670 | super-QR/PSR™ | ±4% | - | - | Built-in | - | - | SOT23-6 |
26 | SFL659 | NC-Aux/PSR-Buck™ | ±5% | 15w | - | - | - | - | DIP8 |
27 | SFL720 | super-PFC/Buck™ | ±4% | - | - | Built-in | - | - | SOP8 |
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