DS3992 Datasheet PDF | Maxim Integrated

Maxim Integrated DS3992

The DS3992 is a low-cost, two-channel controller for cold-cathode fluorescent lamps (CCFLs) that are used to backlight liquid crystal displays (LCDs). The DS3992 can drive multiple CCFLs per channel, making it ideal for 4- and 6-lamp LCD PC monitor and TV applications. The DS3992 uses a push-pull drive scheme to convert a DC voltage (5V to 24V) to the high voltage (300VRMS to 1400VRMS) AC waveform that is required to power the CCFLs.

Part No.	DS3992
Datasheet	DS3992 Download
Manufacturer	Maxim Integrated
Description	2-Channel Push Pull CCFL Controller
Buy	Stock & Price

GENERAL DESCRIPTION

The push-pull drive scheme uses a minimal number of external components, which reduces component and assembly cost and makes the printed circuit board (PC board) design easy to implement. The pushpull drive scheme also provides an efficient DC-to-AC conversion and produces near-sinusoidal waveforms.

FEATURES

o Two-Channel CCFL Controller for Backlighting LCD Panels for PC Monitors and LCD-TVs o Minimal BOM Provides Low-Cost Inverter Solution o Per-Channel Lamp Fault Monitoring for LampOpen, Lamp Overcurrent, Failure to Strike, and Overvoltage Conditions o Accurate (±10%) On-Board Oscillator for Lamp Frequency (40kHz to 80kHz) o Accurate (±10%) On-Board Oscillator for DPWM Burst-Dimming Frequency (90Hz to 220Hz or 180Hz to 440Hz) o Device Supply Undervoltage Lockout o Inverter Supply Undervoltage Lockout o Burst-Dimming Soft-Start Minimizes Audible Transformer Noise o Strike Frequency Boost o 100% to < 10% Dimming Range o 4.5V to 5.5V Single-Supply Operation o -40°C...