SFL330 [SIFIRST]
High Performance, High Power Factor Flyback PWM Controller;
| 型号： | SFL330 |
| 厂家： | 
SIFIRST |
| 描述： | High Performance, High Power Factor Flyback PWM Controller |
| 文件： | 总2页 (文件大小：57K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SFL330
High Performance, High Power Factor Flyback PWM Controller
FEATURES
◆ Programmable Load Over Voltage Protection
(Load OVP)
◆ Built-in Over Load Protection (OLP) with
120ms Debounce Time
GENERAL DESCRIPTION
SFL330 is a high performance, high power factor
flyback PWM controller special for LED lighting
applications. The IC adopts transition mode (TM)
operation for high efficiency and low EMI.
SFL330 has programmable Load Over Voltage
Protection (Load OVP) which can simplify system
design greatly. The IC also has built-in Over Load
Protection (OLP) with 120ms debounce time, which
can protect the system especially when load is short.
SFL330 will Clear External EA Feedback Network
before IC power on. The IC also has Soft Start
control during power on period.
In SFL330, a highly linear analog multiplier is
integrated to achieve low THD and high power factor.
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 spike
when LED output is short.
◆ Built-in Soft Start
◆ Very Low Startup Current
◆ Under Voltage Lockout with 7.7V Hysteresis
◆ VCC Over Voltage Protection (OVP)
◆ 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-alone Applications
◆ Cycle-by-Cycle Current Limiting
◆ Built-in Leading Edge Blanking (LEB)
◆ Audio Noise Free Operation
◆ 10V to 32V Wide Range of VCC Voltage
In SFL330, the prietary “Frequency Adjusting”
can help to improve THD performance, while ensures
audio noise foperation. A VCC Over Voltage
Protection (VCOVP) is integrated to improve
system reliability.
SFL330 integrates functions and protections of Under
Voltage Lockout (UVLO), Over Load Protection (OLP)
VCC Over Voltage Protection (OVP), Load Over
Voltage Protection (Load OVP), Soft Start, Cycle-by-
cycle Current Limiting (OCP), GD Clamping, VCC
Clamping, etc.
◆ 800mA Drive Capability
APPLICATIONS
◆ LED Lighting Application
◆ Single Stage High PF Flyback AC/DC SMPS
SFL330 is available in SOP-8 and DIP-8 packages.
TYPICAL APPLICATION
EMI
Filter
VCC
MULT
FB
GATE
DEM
CS
GND
COMP
SFL100
©SiFirst Technology
- 1 -
Confidential
SiFirst_DS_330_V1.2
SFL330
Pin Configuration
VCC
GD
1
2
3
4
8
7
6
5
FB
COMP
MULT
CS
DIP8/
SOP8
GND
DEM
Ordering Information
Part Number
SFL330SG
Top Mark
SFL330SG
SFL330SG
SFL330DP
Package
Tape & Reel
SOP8
SOP8
DIP8
Green
Green
RHS
SFL330SGT
SFL330DP
Yes
Marking Information
YWW: Year&Week code
YWW: Year&Week code
©SiFirst Technology
- 2 -
Confidential
SiFirst_DS_330_V1.2
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