These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available. The A8515 is a multi-output WLED driver for LCD backlighting, integrating a current-mode boost converter with internal power switch and two current sinks (up to 240mA). It operates from 5V to 40V, supports external PWM dimming, and features a low 720mV regulation voltage on current sources for improved efficiency.
Product Details
Product Details
Top Features
- Wide input voltage range: 5 to 40 V
- Maximum LED current of 120 mA
- TSSOP-16 (LP) package; exposed pad offers best-in-class thermal performance
- Typical LED accuracy of 0.5%, and 0.5% for LED-to-LED matching
- Internal bias supply for single-supply operation (typically between VIN = 8 to 24 V)
- Integrated boost converter with 60 V DMOS switch with overvoltage protection (OVP)
- Drives up to 12 series LEDs in 2 parallel strings
- Single PWM pin interface for both PWM dimming and enable function
- Sync function to synchronize boost converter switching frequencies up to 2.25 MHz, this gives the designer the ability minimize component size
- Provides driver for external PMOS input disconnect switch
- Protection features:
- Open or shorted VLED pin protection
- Open Schottky protection
- Cycle-by-cycle current limit
- Overtemperature protection (OTP)
- Output short circuit protection
