LN5R12C Datasheet – Current-Mode PWM Controller – Lii

Part Number : LN5R12C

Function : AC / DC Switching Power Supply Controller

Package : DIP 8 Pin

Manufacturers : Lii Semiconductor ( http://www.liisemi.com/ )

Image :

ln5r12c-pwm-controller

 

Description :

The LN5R12C is a high-performance, current-mode PWM Controller. Built-in high-voltage power switch, at 85-265V Of the wide grid voltage range of up to 12W Continued output power. Cost-effective production of bipolar workers Art production of the control chip, combined with high-voltage power tube Integrated package to maximize the savings of the entire product Body cost.

The power controller can operate in a typical Flyback circuit topology, constitute a simple AC / DC power supply converter. IC internal high-voltage start-up current source only VIN resistor with a weak current trigger to complete System startup, to a large extent reduce the VIN resistor power consumption; and in the output power is small IC will To reduce the operating frequency, in order to achieve a very low wait Machine power consumption; patented drive circuit so that the switch is always Work in the critical saturation state, improve the system work For efficiency, so that the system can easily meet the “energy of the Star “on the standby power consumption and efficiency certification requirements.

Pinout

ln5r12c-datasheet-pinout

 

Features

1. Built-in 750V high-voltage power switch
2. Built-in high-voltage start-up current source for quick start
3. Built-in energy-efficient processing control Standby less than 0.15W
4. Built-in overvoltage, undervoltage and short circuit protection
5. Built-in overload and over-temperature protection
6. Precise temperature compensation, accurate cycle-by-cycle current control
7. Low starting current and low operating current
8. Adaptive frequency rotation design EMI interference is small
9. High conversion efficiency meets ENERGY STAR 2.0 requirements
10. Wide output power 12W, peak output 15W
11. High-voltage output power 15W, peak output 18W
12. less external components, the whole low cost

Block Diagram

ln5r12c-block-diagram

 

LN5R12C Datasheet

LN5R12C pdf

 

Reference Site : http://www.go-gddq.com/html/s23/2013-05/1129319.htm