power

OZ9967 Datasheet – Six String High Power LED Controller

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Part Number: OZ9967, OZ9967GN

Function: Six String High Power LED Controller

Package: 28 SOP, SSOP, TSSOP, Lead-free Pin Type

Manufacturer: O2Micro

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OZ9967 datasheet led controller

Description

The OZ9967 is an LED controller that drives up to six (6) strings of LEDs in parallel confi guration, with multiple LEDs per string connected in series. It provides six (6) LED current sense inputs in an “OR” confi guration to improve backlight reliability. This allows the backlight to remain functioning in the event that any string (s) is damaged during normal operation. OZ9967 supports external Pulse Width Modulation (PWM) or internal Low frequency PWM (LPWM) dimming control. Plus, it provides an integrated circuit to balance the current fl ow through each LED string. The balance transistors are external to accommodate different power dissipation resulting from the forward voltage difference
among the LED strings.

Pinout

OZ9967 pinout

Features

1. High frequency DC/DC boost converter controller

2. Drives 6 LED strings in parallel

3. Integrated LED current balance control circuit

4. Up to 1MHz switching frequency

5. External PWM or internal LPWM dimming control

6. LED short circuit protection

7. Over-current and over-voltage protection

8. Soft start function

Applications

1. LCD Monitor

2. LCD TV

OZ9967 Datasheet

STRW6556A Datasheet PDF – Regulator, Power Controller

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Part Number: STRW6556A

Function: Regulator, Power Supply, Power Controller

Package: TO-220 Type

Manufacturer: Sanken

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STRW6556A datasheet pinout

Description

This is regualtor, Power Management Chip. The STRW6556A is a power regulator and PWM switching controller IC with an integrated MOSFET, packaged in a TO-220 form factor for off-line power supply applications. It provides high efficiency, low standby power consumption, and built-in protection features for reliable operation in switching regulators. This device is commonly used in SMPS designs for TVs, adapters, and general-purpose AC-DC power supplies.

Features

  • Integrated high-voltage power MOSFET
  • Low standby power consumption
  • Quasi-resonant switching for improved efficiency
  • Built-in overcurrent protection (OCP)
  • Overvoltage protection (OVP)
  • Thermal shutdown protection
  • Reduced EMI noise operation
  • TO-220 package for effective heat dissipation

STRW6556A absolute maximum ratings

(1) Control Supply Voltage, VCC: 35 V
(2) Drain-Source Voltage, VDSS: 650 V
(3) Drain Switching Current, ID: 15 A
(4) Peak Drain Switching Current,IDM: 15 A
(5) Single-Pulse Avalanche Energy, EAS: 400 mJ
(6) OCP/BD Voltage Range, VOCP: 1.5 V to +5 V
(7) FB Input Current, IFB: 10 mA
(8) FB Voltage Range, VFP: 0.5 V to +9 V
(9) Package Power Dissipation, PD: 0.8 W
(10 )MOSFET Channel Temp., TJ : +150 °C
(11) Internal Frame Temp., TF: +115 °C
(12) Operating Temperature Range,TA: -20°C to +115 °C
(13) Storage Temperature Range, TS: -40°C to +125 °C

 

Pinout and Block Diagram

STRW6556A block diagram

Typical Circuit Usage

  • Flyback converter in AC-DC power supplies
  • Standby power supplies with low no-load consumption
  • SMPS for televisions and monitors
  • Adapter and charger circuits
  • Auxiliary power supplies in industrial systems

How to Choose This Part

  • Choose for integrated PWM + MOSFET solutions to reduce component count
  • Suitable for medium power SMPS applications
  • Ideal for designs requiring low standby power compliance
  • Consider thermal design and enclosure constraints
  • Verify compatibility with required output power and topology

Applications

  • AC-DC switching power supplies
  • TV and monitor power circuits
  • Power adapters
  • Battery chargers
  • Industrial SMPS systems

Alternative / Equivalent Products

  • STR-W6554A
  • STR-W6553A
  • STR-W6555A
  • ICE3BR1765J
  • FSDM0565RB

STRW6556A Datasheet

STRW6556A pdf

COLOR TV BASIC SCHEMATIC DIAGRAM : Power Controller.pdf


Other data sheets are available within the file: STR-W6556A-F5, STR-W6556A, STRW6556