STMicroelectronics LED7707
The LED7707 consists of a high efficiency monolithic boost converter and six controlled current generators (rows) specifically designed to supply LED arrays used in the backlighting of LCD panels. The device can manage an output voltage up to 36 V (i.e. The device can detect and manage open circuit and short-circuit LED faults and leave unused rows floating.| Part No. | LED7707 |
|---|---|
| Datasheet | LED7707 Download |
| Manufacturer |  STMicroelectronics |
| Description | 6-rows 85mA LEDs driver |
| Buy | Stock & Price |
APPLICATIONS
● LCD monitors and TV panels● PDAs panel backlight
● GPS panel backlight VFQFPN-24 4x4
DESCRIPTION
FEATURES
● Boost section – 4.5 V to 36 V input voltage range – Internal power MOSFET 10 white LEDs per row). – Internal +5 V LDO for device supply – Up to 36 V output voltage – Constant frequency peak current-mode control – 250 kHz to 1 MHz adjustable switching frequency – External synchronization for multi-device application The generators can be externally programmed to sink up to 85 mA and can be dimmed via a PWM signal (1% dimming duty-cycle at 1 kHz can be managed). Basic protections (output overvoltage, internal MOSFET overcurrent and thermal shutdown) are provided. – Pulse-skip power saving mode at light load – Programmable soft-start – Programmable OVP protection – Stable with ceramic output capacitors – Thermal shutdown● Backlight driver section – Six rows with 85 mA maximum current capability (adjustable) – Rows disable option – Less than 10 µs minimum dimming on-time – ±2% current matching between rows – LED failure (open and short-circuit) detection Table 1.
