LD7793 - Suzhou Jiyuan Electronic Technology Co., Ltd.

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LD7793

Transition-Mode PFC and Quasi-Resonant / Frequency Modulation Current Mode PWM Controller

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Datasheet

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Key Features

Integrated Boost PFC and QR/PFM Flyback controller

Voltage mode transition operation on PFC

Current mode QR/PFM operation on Flyback

Frequency swapping operation on Flyback

Brown in/out protection and X-cap discharge function

Internal soft-start function and PFC on/off control

OVP (Over voltage protection)

OCP (Cycle-by-cycle current limiting)

Internal OTP function and external protection pin

500/-1000mA PFC gate source/sink capability

700/-1000mA Flyback gate source/sink capability

Pin Configuration

Ordering Information

The LD7793BGS1, LD7793IGS1 and LD7793OGS1 is RoHS compliant/green packaged.

Protection Mode

Part number	AC OVP	VCC OVP FBAUX OVP	FBCOMP OLP FBAUX UVP Flyback OSCP	PFC& Flyback OCP	PROT (pin 5)	Internal OTP	PFC UVP	FBAUX Open	PFC DSCP/ PFC OVP	Flyback DSCP
LD7793BGS1	Auto recovery	Auto recovery	Auto recovery	Cycle by cycle	Auto recovery	Auto recovery	Auto recovery	Auto recovery	PFCDRV Time Out / Stop	Auto recovery
LD7793IGS1	Auto recovery	Latch	Latch	Cycle by cycle	Latch	Auto recovery	Auto recovery	Auto recovery	PFCDRV Time Out / Stop	Auto recovery
LD7793OGS1	Auto recovery	Latch	Auto recovery	Cycle by cycle	Latch	Auto recovery	Auto recovery	Auto recovery	PFCDRV Time Out / Stop	Auto recovery

Address: 177 East Suhong Road, Fangzheng Wisdom Valley, Suzhou Industrial Park

Tel: +86 512-62373510

Fax: +86 512-62373512

E-mail: weixiliu@jypower.cn
Address: Building A5, Huaqiang Creative Industry Park, Guangming District, Shenzhen

Tel: +86 18662166251

E-mail: Stevenshi@jypower.cn