Pinout

JW5022 PDF Datasheet – 2A, 20V, Step-Down Converter

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A synchronous step-down converter, also known as a synchronous buck converter, is a type of DC-DC (direct current to direct current) voltage converter used to efficiently reduce or step-down the voltage from a higher level to a lower level. It’s widely used in electronic devices and power supply applications to efficiently regulate voltage and power delivery.

Part Number: JW5022

Function: 2A, 20V, Synchronous Step-Down Converter

Package: SOP 8 Pin Type

Manufacturer: JoulWatt

Images:JW5022 pdf converter

Description

The JW5022 is a current mode monolithic buck switching regulator. Operating with an input range of 4.6V~20V, the JW5022 delivers 2A of continuous output current with two integrated
N-Channel MOSFETs. The internal synchronous power switches provide high efficiency without
the use of an external Schottky diode.

At light loads, regulators operate in low frequency to maintain high efficiency and low output ripple. Current mode control provides tight load transient response and cycle-by-cycle current limit.

Features

1. 4.6V to 20V operating input range 2A output current

2. Up to 94% efficiency

3. High efficiency (>85%) at light load

4. Adjustable Soft-Start

5. Fixed 340kHz Switching frequency

Pinouts:
JW5022 pinout datasheet

Applications:

1. Distributed Power Systems

2. Networking Systems

3. FPGA, DSP, ASIC Power Supplies

4. Green Electronics/ Appliances

JW5022 PDF Datasheet

OZ9936 PDF – LCD Monitor CCFL Inverter Controller

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Part Number: OZ9936

Function: LCD Monitor CCFL Inverter Controller

Package: SOIC, DIP 8 Pin type

Manufacturer: O2Micro

Images:OZ9936 pdf pinout

Description

The patent pending OZ9936 is a cost-effective CCFL (Cold Cathode Fluorescent Lamp) Power
Management controller designed for driving CCFLs in Liquid Crystal Display (LCD) applications.

The 0Z9936 provides two drive signals for most power conversion topologies, such as push-pull,
half-bridge, full-bridge or Class-D inverters while maintaining high-efficiency operation. The highly integrated controller provides current and voltage regulation, soft-start operation, over-voltage protection and an external enabling function while maintaining a high-degree of design flexibility. The application requires a minimum number of off-the-shelf components.

1. CCFL Backlighting: In LCD monitors that use CCFLs for backlighting, the CCFLs are positioned behind the LCD panel. When energized, they emit a consistent and uniform white light that passes through the LCD panel to create the display.

2. High-Voltage Generation: The CCFL lamps require a high voltage to start and maintain their operation. The inverter controller generates this high voltage from the lower voltage supplied by the monitor’s power source, typically DC (Direct Current).

3. Brightness Control: The inverter controller also provides a means to control the brightness of the CCFL lamps. This is important because different applications or lighting conditions may require varying levels of screen brightness. The controller can adjust the output voltage to the CCFLs to achieve the desired brightness level.

 

Pinouts:

OZ9936 pinout datasheet

Features

• Built-in intelligence to ignite positive impedance CCFLs

• Low cost LCD monitor inverter solution

• Constant operating frequency

• Built-in intelligence for ignition and normal operation of CCFLs

• Built-in open-lamp protection and over-voltage protection

• Optimized soft-start function

• Supports both analog and external PWM dimming control

Block Diagram
OZ9936 datasheet

Other data sheets are available within the file:

OZ9936G, OZ9936GN, OZ9936D, OZ9936GDN, 0Z9936G, 0Z9936GN, 0Z9936D, 0Z9936GDN

OZ9936 PDF Datasheet