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 a 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.
|Regulated Outputs (#)|
|Vin (Min) (V)|
|Vin (Max) (V)|
|Step-Up DC/DC Converter|
|Step-Down DC/DC Converter|
|Iout (Max) (A)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
|-40 to 85||-40 to 85||-40 to 85||-40 to 85||-40 to 85|
|120BGA MICROSTAR JUNIOR||139NFBGA||139NFBGA||209NFBGA||169BGA MICROSTAR|
|3.20 | 1ku||3.75 | 1ku||3.80 | 1ku||4.40 | 1ku||4.40 | 1ku|
|Sample & Buy||Sample & Buy||Sample & Buy||Sample & Buy||Sample & Buy|