STEVAL-ISA056V1 6 rows - 30 mA LEDs driver with boost converter for LCD panels backlight evaluation board based on the PM6600

This evaluation board based on the PM6600 consists of a high efficiency monolithic boost converter and six controlled current generators (rows) specifically designed to supply LEDs arrays used in the backlight of LCD panels. The device can manage an output voltage up to 36 V (i.e. ten white-LEDs per row).

The generators can be externally programmed to sink up to 30 mA and can be dimmed via a PWM signal (1% dimming duty-cycle at 20 kHz can be managed). The device allows to detect and manage the open and shorted LED faults and to let unused rows floating. Basic protections (output over-voltage, internal MOSFET overcurrent and thermal shutdown) are provided

技术特性

Boost section
- 4.5 V to 28 V input voltage range
- Internal Power MOSFET
- Internal +5 V LDO for device supply
- Up to 36 V output voltage
- Constant frequency peak current-mode ctrl
- 200 kHz to 1 MHz adjustable switching frequency
- External sync for multi-device application
- Pulse-skip power saving mode at light load
- Programmable soft-start
- Programmable OVP protection
- Single ceramic output capacitor
- Latched thermal shutdown
Backlight driver section
- Six rows with 30mA maximum current capability (adjustable)
- Up to 10 W LEDs per row
- Rows disable option
- Less than 500 ns minimum dimming time (1% minimum dimming duty-cycle at 20 kHz dimming frequency)
- ±2.0% current matching between rows
- LED failure (open and short circuit) detection

功能框图

STEVAL-ISA056V1 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
STEVAL-ISA056V1	Active		1000

DATA BRIEF

描述	版本	大小
STEVAL-ISA056V1 : 6 rows - 30 mA LEDs driver with boost converter for LCD panels backlight evaluation board based on the PM6600	1	93KB

APPLICATION NOTES

描述	版本	大小
AN2787: Monolithic VR demonstration board for chipset and DDR2/3 supply for ultramobile PC (UMPC) applications	1	2594KB
AN2936: 10 W SMPS with HV power MOSFET and the L6565 for three-phase industrial applications	1	303B

BILL OF MATERIALS

描述	版本	大小
Bill of materials	1.0	56KB

SCHEMATIC PACKS

描述	版本	大小
Board schematic	1.0	24KB

PCB LAYOUTS

描述	版本	大小
PCB layout	1.0	151KB