TPS65921数据手册集成电路（IC）的电源管理-专用规格书PDF

描述 Description

The TPS65921 device is a highly integrated power-management circuit (IC) that supports the power and peripheral requirements of the OMAP application processors. The device contains power management, a universal serial bus (USB) high-speed (HS) transceiver, an analog-to-digital converter (ADC), a real-time clock (RTC), a keypad interface, and an embedded power control (EPC). The power portion of the device contains three buck converters, two controllable by a dedicated SmartReflex class-3 interface, multiple low-dropout (LDO) regulators, an EPC to manage the power-sequencing requirements of OMAP, and an RTC module. The USB module provides an HS 2.0 transceiver suitable for direct connection to the OMAP universal transceiver macrocell interface (UTMI) + low pin interface (ULPI) with an integrated charge pump (CP).
The device also provides auxiliary modules: ADC, keypad interface, and general-purpose inputs/outputs (GPIOs) muxed with the JTAG functions. The keypad interface implements a built-in scanning algorithm to decode hardware-based key presses and to reduce software use, with multiple additional GPIOs that can be used as interrupts when they are configured as inputs.

特性 Features

·Three Step-DownConverters:·Up to 1.2 A of Output Current for VDD1·TPS65921B Supports VDD1 up to 1.2 A
·TPS65921B1 Supports VDD1 up to 1.4 A (Necessary for 1-GHz Operation)
·SmartReflex Dynamic Voltage Management
·3.2-MHz Fixed Frequency Operation
·VIN Range from 2.7 to 4.5 V
·Typical 30 µA Quiescent per Converter
·Four General-Purpose Configurable LDOs:·Dynamic Voltage Scaling
·220-mA Maximum Current for One LDO
·VIN Range from 2.7 to 4.5 V
·2 LDOs With Low Noise and High PSRR
·RTC With AlarmWake-Up Mechanism
·Clock Management·32-kHz Crystal Oscillator
·Clock Slicer for 26, 19.2, and 38.4 MHz
·HF Clock Output Buffer
·USB:·USB HS 2.0 Transceiver
·USB 1.3 OTG-Compliant
·12-Bit ULPI 1.1 Interface
·USB Power Supply (5-V CP for VBUS)
·Control·High-Speed I2C Interface
·All Resource Configurable by I2C
·Keypad Interface up to8 × 8
·10-Bit A/D Converter
·Hot-Die, Thermal ShutdownProtection
·µ*BGA 120 Balls ZQZ