The V7209 is boost topology switching regulator for LED driver. It provides built-in gate driverpin for driving external N-MOSFET. The non-inverting input of error amplifier connects to a 0.25Vreference voltage. It has programmable soft start time and switching frequency set by externalcapacitor and resistor. There are four functions to protect system circuit, such as UVP, OVP, SCP and OCP. The LED current can be adjusted by an external signal connecting to the DIM pin. DIM pin accepts either a DC voltage or a PWM signal. The PWM signal filter components are contained within the chip. Current mode control and external compensation network make is easy and flexible to stabilize the system.
The V7209 is available in the small footprint SOP-8L(EP) and TSSOP-14L(EP) packages to fitin space-saving PCB layout for application fields.
典型应用电路图：
Features
Start-up Voltage: 2.8V
Wide Supply Voltage Operating Range: 5V to 24V
Precision Feedback Reference Voltage: 0.25V (Max.)
Analog and Digital Dimming Control
Shutdown Current: 6μA (Max.)
Programmable Switching Frequency: 100KHz~1000KHz
Programmable Soft Start Function (SS)
Input Under Voltage Protection (UVP)
Output Over Voltage Protection (OVP)
LED Short Circuit Protection (SCP)
Switching MOSFET Over Current Protection (OCP)
Over Temperature Protection (OTP)
Package: SOP-8L(EP), TSSOP-14L(EP)
引脚信息：
LED Module
Display Backlight
Car Lighting
Portable LED Lighting
