Controller

FD650 Datasheet PDF – LED Drive Controller – FDHISI

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Part Number: FD650

Function: LED Drive Controller / Keyboard Scan ASIC

Package: DIP 16 Pin ( FD650K ), SOP 16 Pin ( FD650S )

Manufacturer: Fuda Hisi Microelectronics

Image:

FD650 image

Description

The FD650 LED Driver is an interface with a keyboard scanning circuit drive control dedicated circuit. Internal MCU integrated input  Output controls the digital interface, data latches, LED drive, keyboard scanning, brightness adjustment and other circuitry. The chip resistance Stable, reliable, strong anti-interference ability, can be adapted to long-term applications 24 hours of continuous work.

 

Pinout

FD650 pinout

Features

1. Display mode : 8 segments × 4 digits

2. The segment drive current is not less than 25mA and the word drive current is not less than 150mA

3. Provides 8 levels of brightness control

4. Keyboard scanning: 7 × 4bit

5. High-speed two-wire serial interface

6. Built-in clock oscillation circuit

7. Built-in power-on reset circuit

8. Supports 3V to 5.5V supply voltage

Applcation Circuit :

FD650 Datasheet

FD650 Datasheet PDF

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OZ9976GN Datasheet PDF – PWM Controller – OZMICRO

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Part Number: OZ9976GN

Function: Pulse Width Modulation (PWM) controller, LCD TV Controller

Package: SOP-16 Type

Manufacturer: OZMICRO

Image :
OZ9976GN

Description

The OZ9976GN is a high efficiency, Pulse Width Modulation (PWM) controller designed for off line LCD backlight application. It achieves high efficiency power conversion with minimal switching loss using Zero Current Switching (ZCS) technology. OZ9976 applications can operate under fixed or variable operating frequency with ZCS technology.

The minimum operating frequency can be set by either an external RC network or operate in self-oscillating mode. The intelligent operating frequency management circuitry extends Cold Cathode Fluorescent Lamp (CCFL) lifetime and offers design flexibility.

 

Features

1. Offline Inverter Controller (IPB)

2. Supports both fixed and variable frequency applications

3. Half-bridge or push-pull topology

4. Directly drives pulse transformers

5. Dedicated pins for Analog and LPWM dimming

6. User-defined minimum operating frequency

7. User-defined striking frequency range

8. Open-load, over-voltage, and under-voltage lockout protection

9. User-defined striking and shutdown delay timers

10. Soft start function

Pinouts:

OZ9976GN Datasheet

Other data sheets are available within the file: 0Z9976GN, OZ9976

OZ9976GN Datasheet PDF


OZ9976GN pdf