PM6602 Datasheet | STMicroelectronics

.. 8-row 30-m A LED driver with boost regulator, dual dimming mode, SMBus interface and DPST for LCD panel backlights Preliminary data Features - - 2 dimming modes: SMBus or PWM Boost section - 3.3 V to 28 V input voltage range - Internal power MOSFET - Internal +3.3 V LDO for device supply - Up to 36 V output voltage - Constant frequency peak current mode control - 500 k Hz to 2 MHz adjustable switching frequency - Pulse-skip power saving mode at light loads - Built-in soft-start feature - Programmable OVP protection - Stable with ceramic output capacitors - Thermal shutdown Backlight driver section - 8 rows with 30 m A maximum current capability (adjustable) - Row disabling option - 500 ns minimum dimming time (1% minimum dimming duty-cycle at 20 k Hz) - ±3% current accuracy - ±2% current balance - LED failure (open and short circuit) detection VFQFPN-24 4x4 AM03692v1 Description The PM6602 consists of a high-efficiency monolithic boost converter and eight controlled current generators (ROWs), specifically designed to supply LED arrays used in the backlights of LCD panels. The device can manage a nominal output voltage of up to 36 V. The generators can be externally programmed to sink up to 30 m A and they can be dimmed in two different modes: via a PWM signal (1% dimming duty-cycle at 20 k Hz can be managed) or in SMBus mode. The device can detect and manage the open and shorted LED faults. The device detects the unused ROWs (connected to SGND). Basic protections (output overvoltage, internal MOSFET overcurrent and thermal shutdown) are provided. - Applications - - Backlights of notebook monitors Backlights of UMPC monitors Device...