Серия LED-драйверы интегральные, контроллеры управления светом RT4531

Общие характеристики

	Раздел	LED-драйверы интегральные, контроллеры управления светом
	Корпус	WLCSP9
	Максимальное выходное напряжение
	Диапазон входных напряжений
	Рабочая температура

Документация на серию RT4531

Reference Design Sample & Buy ® RT4531 Dual Channel 10s2p WLED Drivers General Description Features The RT4531 is a dual-channel current source with highefficiency asynchronous boost converter for backlight application. The RT4531 has built-in 1.5A/36V power MOSFET and two high current-matching capability current sink, so RT4531 can drives up 10s2p white LED. The RT4531 can allow very low voltage headroom control, therefore to improve LED strings efficiency effectively.        The RT4531 supports both PWM dimming and 1-wire digital dimming interface and it can realize 10 bit brightness code programming.    The RT4531 provides complete protection functions such as input Under-Voltage Lockout (UVLO), Over-Current Protection (OCP), Output Over Voltage (OVP) and OverTemperature Protection (OTP).  Ordering Information The RT4531 is available in the WL-CSP-9B 1.35x1.35 (BSC) package. RT4531 Package Type WSC : WL-CSP-9B 1.35x1.35 (BSC) Applications     Input Voltage Range : 2.5V to 5.5V Internal Soft-Start, UVLO, OTP, OCP, OVP Typical Shutdown Current : < 1μ μA 1MHz Switching Frequency Drives Up to 10 WLEDs in Two Strings Independent PWM Dimming and 1-Wire Dimming Control PWM Dimming Frequency from 20k to 100kHz Up to 10 Bit Dimming Resolution LED Current Accuracy ± 2% (IFBx = 20mA) LED Current Matching ± 2% ( IFBx = 20mA) Built-in IFB1/IFB2 pin OVP, Short Protection, and Un-Use Detection Note : Smart Phones Probable Instruments Backlight for Small and Media Form Factor LCD Display with Single-cell Battery Input Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. Simplified Application Circuit L VIN C1 C3 R1 PWM Dimming RT4531 EN PWM DS4531-03 April 2018 2P10S WLEDs IFB1 IFB2 ISET GND AGND Copyright © 2018 Richtek Technology Corporation. All rights reserved. … Enable SW … VIN C2 R2 is a registered trademark of Richtek Technology Corporation. www.richtek.com 1

PDF

Документация на RT4531WSC

Dual Channel 10s2p WLED Drivers The RT4531 is a dual-channel current source with high-efficiency asynchronous ,boost converter for backlight application. The RT4531 has built-in 1.5A/36V ,power MOSFET and two high current-matching capabi...

Дата модификации: 04.10.2018

Размер: 233.4 Кб

14 стр.

найти RT4531.pdf

Товары серии RT4531

Наименование	i	Упаковка
RT4531WSC (RICHTEK)		1 шт