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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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
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
