TPS65921 (ACTIVE)

Integrated Power Management IC with 3 DC/DC's, 4 LDO's, USB HS Transceiver

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.

Features

  • 3 Step-Down Converters:
    • Up to 1.2 A of output current for VDD1TPS65921B supports VDD1 up to 1.2 ATPS65921B1 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
  • 4 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 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

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Parametrics Compare all products in Power Management Multi-Channel IC (PMIC) Solutions

 
Regulated Outputs (#)
Processor Name
Vin (Min) (V)
Vin (Max) (V)
LDO
Step-Up DC/DC Converter
Step-Down DC/DC Converter
Iout (Max) (A)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS65921 TPS65920 TPS65930 TPS65950 TPS65951
7     7     7     13     13    
TI-OMAP3503/15/25/30     TI-OMAP3503/15/25/30     TI-OMAP3503/15/25/30     TI-OMAP3503/15/25/30     TI-OMAP3503/15/25/30    
2.7     2.7     2.7     2.7     2.7    
4.5     4.5     4.5     4.5     4.5    
4     4     4     10     9    
1     1     1     1     1    
3     3     3     3     3    
1.7     1.7     1.7     1.7     1.7    
Catalog     Catalog     Catalog     Catalog     Catalog    
-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    
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