• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The TWL92230 is an energy management device optimized to be a companion device for the OMAP24xx application processor. It contains power supplies and reference voltage for OMAP24xx (V_CORE, V_IO, V_ADAC, V_PLL, and a 0.5-V reference), for associated memory (V_MEM), for two independently powered memory cards (V_MCS1 and V_MCS2) and also for an extra device or auxiliary peripheral (V_AUX). It contains all relevant interface signals to OMAP24xx, that allow monitoring, operation control, and changing of regulator voltage settings via the I²C serial interface. The TWL92230 also has memory card transceivers to adapt a 1.8-V processor I/O voltage to the memory card voltages. It supports two slots for MMC, SDIO, SD, or Memory Stick cards.

特性

• An 880-mA buck dc-dc converter for processor core (V_OUT = 1.00 V to 1.45 V).
• Two 400-mA buck dc-dc converters (V_OUT = 1.5 V to 3.2 V). One dc-dc converter can be used as a preregulator for the VIO and the VMEM LDO regulators. The other dc-dc converter can power a high-current Memory Card slot.
• The dc-dc converters run at 1.2 MHz, provided by an internal clock or the clock generator/divider that accepts 12 MHz, 13 MHz, or 19.2 MHz as the high-frequency clock input.
• One 200-mA LDO regulators (V_OUT = 1.50 V, 1.80 V, 1.90 V, or 2.50 V). It typically powers memory.
• One 200-mA LDO regulator (V_OUT = 1.85 V, 2.80 V, 3.00 V, or 3.10 V). It typically powers a Memory Card slot, MMC/SD slot 1 (high-current level compliant with MMC/SD and SDIO 1.0).
• Two 200-mA LDO regulator (V_OUT = 1.50 V, 1.80 V, 2.50 V, or 2.80 V). They typically power an extra device (flash memory, SDRAM, peripheral, etc) and the processor I/O.
• One 10-mA, high-PSRR, low-noise LDO regulator (1.30 V). It typically powers the processor PLL.
• One 2-mA, high-PSRR, low-noise LDO regulator (1.80 V). It typically powers the processor TV-Out DAC.
• One 0.5-V voltage reference that typically powers the processor TV-Out DAC.
• Backup battery switch provides the input voltage for the low-current VDIG LDO regulator. The output of this LDO is externally available for connection to a filter capacitor, but it must not be loaded externally.
• Allows dynamic voltage management for the processor core voltage.
• 32-kHz oscillator and integrated real-time clock (RTC). An external crystal or a digital 32-kHz clock signal is required.
• 400 kHz I²C compatible serial interface.
• Three general-purpose I/O ports (GPIOs). Some GPIOs may have alternative functions.
• Dual slot memory card transceivers that can be powered independently.
• Monitoring and detection circuits: thermal shutdown, hot die, low-battery, and undervoltage lockout.
• Housed in a 5mm × 5mm package (80ZQE) that is RoHS compliant and lead-free soldering process compatible.
• Typical applications: Cellular phones, smartphones, and PDAs