AX2008 Overview
Key Specifications
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Description
The AX2008 is a step-up current mode PWM DC/DC converter with built-in power MOSFET and eight channel current sources. It is designed for driving white LED arrays for medium size LCD panel backlight applications.
Key Features
- Through the function, the AX2008 is able to dynamically adjust output voltage of step-up converter to optimize the system power efficiency
- The internal step-up converter provides soft-start feature which is determined by external compensation components
- In shutdown mode, current consumption of converter can be reduced to only 1uA
- The AX2008 provides eight channels constant current sinks with maximum ±3% current matching
- The LED current can be adjusted by an external resistor, which provides users flexibility to control the light intensity of LEDs
- In addition, users can precisely adjust LED brightness from 0% to 100% via PWM pin with pulse width modulation
- The AX2008 has multiple features to protect the converter from fault conditions
- The adjustable over-voltage protection (OVP) function prevents the converter when output loading is open
- Over-current protection (OCP) function ensures the system reliability and provides consistent operation
- Over-temperature protection (OTP) function protects the converter from overheating in various application conditions
