Серия LED-драйверы интегральные, контроллеры управления светом RT4832

Richtek

Общие характеристики

 Раздел LED-драйверы интегральные, контроллеры управления светом
Корпус WLCSP30
Максимальное выходное напряжение
Диапазон входных напряжений
Рабочая температура

Документация на серию RT4832

RT4832A Sub PMIC with Dual-Output Boost Converter with I2C Interface for Flash LED and Backlight LED, Dual-Output LCD Bias and DSV General Description The RT4832A is an integrated total power solution for Flash LED Driver, Backlight WLED Driver, and DSV Driver. Flash LED Driver provides up to 2-CH 1.5A applications. Back Light WLED Driver supports up to 36V output for 10 WLEDs applications. And it provides 1024 steps LED current with logarithmic/linear curve. DSV is implemented by one single inductor boost and inverting charge pump, which provide customers minimum EVB area compared to dual inductors. The negative output power (CPOUT) comes from boost output (LCMOUT). It also provides DSV positive voltage (POS), which power noise is reduce by passing though LDO. Their ranges can be programmed from ±4V to ±6V per 50mV step respectively. Flash Boost Converter operates at 2MHz/4MHz frequency. The 4MHZ frequency solution allows tinny and low-profile components. Torch Mode Current can be set from Features       25mA to 375mA per 25mA step. And Strobe Mode Current range is from 100mA to 1.5A per 100mA step. DSV drives TFT-LCD panels up to 10” (from SFF to MFF like tablets). These two output rails are usually connected to Source Driver IC. Wide input voltage range from 2.5V to 5.5V optimizes the single-cell battery applications (Li-Ion, Ni-Li, Li-Polymer) and which symmetrical output current is up to 80mA. The RT4832A provides complete protection such as VIN under voltage lockout, Vin monitor protection, over current protection, over voltage protection, LED short protection, VOUT short protection and over temperature protection. The RT4832A is available in WL-CSP-30B 2.24x2.64 (BSC) package. Applications   Smart Phones Probable Instruments Copyright © 2017 Richtek Technology Corporation. All rights reserved. DS4832A-00 January 2017 Input Voltage Range : 2.5V to 5.5V Internal Soft-start, UVLO, OTP, OCP Typical Shutdown Current : < 1A 40 to 85°C Temperature Range 2CH Back Light LED Driver  Drives Up to 10 WLEDs in Two Strings 2  External PWM Pin Control and I C Programmable 11 bit Linear and Exponential Brightness  LED Current Accuracy 5% (>500A), 3% (>5mA) 2  I C Programmable OVP 18/22/25/29/33/36V 2CH Flash LED Driver  Torch Mode Current from 25mA to 375mA per 25mA Step with 2 Channels  Strobe Mode Current from 100mA to 1.5A per 100mA Step with 2 Channels 2  I C Programmable Flash Safety Timer from 32ms to 1024ms per 32ms Step  High Accurate Safety Timer ±10%, Current Accuracy 4% (>375mA), Current Matching 7% (>375mA)  VIN Monitor Protection from 2.5V to 3.2V per      0.1V Step Selectable Input Current Limit 1.9/2.8A 2MHz/4MHz Switching Frequency for Flash LED Flash LED1/2 Short Protection, and Output Short Protection Txmask Protection by Independent Pin DSV 2  I C Programmable Output Voltages  Flexible Boost Voltage, POS, CPOUT Default Setting  Regulated Voltage Output : 4V to 6V per 50mV Step  Positive Voltage Output : 4 to 6V per 50mv Step  Negative Voltage Output : 4 to 6V per 50mV Step  User Selectable Output Fast Discharge Mode or is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 PDF
Документация на RT4832AWSC 

Sub PMIC with Dual-Output Boost Converter with I2C Interface for Flash LED and ,Backlight LED, Dual-Output LCD Bias and DSV The RT4832A is an integrated total power solution for Flash LED Driver, ,Backlight WLED Driver, and DSV Driver. F...

Дата модификации: 04.10.2018

Размер: 2.12 Мб

26 стр.

    Товары серии RT4832

    Наименование i Упаковка
    RT4832AWSC (RICHTEK)