DESCRIPTION
The LD1024 is a 16-channel, constant current sink LED driver. Each channel can be turned on/off by writing serial data to an internal register. The constant current value of all 16 channels is set by a single external resistor.
The LD1024 has two error detection circuits: one for LED open detection (LOD) and one for a pre-thermal warning (PTW). LOD detects a broken or disconnected LED and LEDs shorted to GND while the constant current output is on. PTW indicates a high temperature condition.

FEATURES
• 16 Channels, Constant Current Sink Output with On/Off Control
• 45-mA Capability (Constant Current Sink)
• 10-ns High-Speed Constant Current Switching Transient Time
• Low On-Time Error
• LED Power-Supply Voltage up to 5V
• VDD = 3.0 V to 5.5 V
• Constant Current Accuracy:.
   - Pin to Pin Deviation Typ ±1.0%, Min/Max ± 3.0%
   - Chip to Chip Deviation Typ ±3.0%, Min ± 6.0%
• CMOS Logic Level I/O
• 35-MHz Data Transfer Rate
• 20-ns OEB Pulse Width
• Readable Error Information:
• LED Open Detection (LOD)
• Pre-Thermal Warning (PTW)
• Operating Temperature: –40°C to +85°C