©SiFirst Technology - 1 - Confidential
SiFirst_DS_1560_V1.2
条纹码
SF1560
FEATURES
◆ Latch Plug-off Protection with External
Triggering
◆ Built-in Soft Start Function ◆ Very Low Startup Current
◆ Frequency Reduction and Burst Mode Control
for Energy Saving
卡盘扳手◆ Built-in Frequency Shuffling ◆ Programmable Switching Frequency
◆ Built-in Synchronous Slope Compensation ◆ Cycle-by-Cycle Current Limiting ◆ Pins Floating Protection
◆ High Voltage CMOS Process with Excellent
ESD Protection
◆ Current Mode Control
戒烟牙膏◆ Built-in Leading Edge Blanking (LEB) ◆ Constant Power Limiting ◆ Audio Noise Free Operation ◆ VDD OVP & Clamp ◆ VDD Under Voltage Lockout (UVLO)
APPLICATIONS
Offline AC/DC Flyback Converter for ◆ AC/DC Power Adaptors ◆ Open-frame SMPS
◆ Print Power, Scanners, and Motor Drivers
GENERAL DESCRIPTION
SF1560 is a high performance, highly integrated current mode PWM controller for medium to large offline flyback converter applications.
In SF1560, the PWM switching is internally trimmed to tight range. To improve EMI performance, the
IC integrates frequency shuffling function to reduce conduction EMI emission of a power supply. The IC also integrates Constant Power Limiting block to achieve constant output power limit from 90VAC to 264VAC.
Under light load conditions, a green mode function can continuously decrease the switching frequency. Under zero-load conditions, the power supply enters into burst mode and provides excellent efficiency without audio noise generated. This green mode function enables power supplies to meet international power conservation requirements.
SF1560 integrates functions and protections of Under Voltage Lockout (UVLO), VDD Over Voltage Protection (OVP), Soft Start, External Programmable Over Temperature Protection (OTP), Cycle-by-cycle Current Limiting (OCP), Over Load Protection (OLP), Pins Floating Protection, RI Pin Short-to-GND Protection, GATE Clamping, VDD Clamping, Leading Edge Blanking (LEB).
In SF1560, the OTP and VDD OVP is latch plug-off protection. The other protection functions are auto-recovery mode protection.
SF1560 is available in SOP-8 and DIP-8 packages.
TYPICAL APPLICATION
Highly Integrated Current Mode PWM Controller
with Latch
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©SiFirst Technology - 2 -
Confidential
扎把机SiFirst_DS_1560_V1.2
SF1560
Pin Configuration
Ordering Information
Part Number
单齿辊破碎机
Top Mark
Package
Tape & Reel
SF1560SG SF1560SG SOP8 Green SF1560SGT SF1560SG SOP8 Green Yes SF1560DP SF1560DP DIP8
RoHS
Marking Information
YWW: Year&Week code
YWW: Year&Week code
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