TPS65921 Datasheet, PDF (1/58 Pages) Texas Instruments – Power Management and USB Single Chip

TPS65921
www.ti.com
SWCS048F – MARCH 2010 – REVISED MARCH 2012
Power Management and USB Single Chip
Check for Samples: TPS65921
FEATURES
1
• 3 Step-Down Converters:
– 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
– V_IN range from 2.7 to 4.5 V
– Typical 30 µA quiescent per converter
• 4 general-purpose configurable LDOs:
– Dynamic voltage scaling
– 220 mA maximum current for one LDO
– V_IN range from 2.7 to 4.5 V
– 2 LDOs with low noise and high PSRR
• RTC with alarm wake 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 to 8 × 8
• 10-bit A/D converter
• Hot-die, thermal shutdown protection
• µ*BGA 120 balls ZQZ
APPLICATIONS
• Mobile phones and smart phones
• MP3 players
• Handheld devices
• E-Books
• OMAP™ and low power DSP supply
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 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.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2012, Texas Instruments Incorporated