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 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.

Features

  • Three 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
    • 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 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)
Vout (Max) (V)
LDO
Step-Up DC/DC Converter
Step-Down DC/DC Converter
Iout (Max) (A)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS65921 TPS65920 TPS65930 TPS65950 TPS65951
7     7     7     13     12    
OMAP35xx     OMAP35xx     OMAP35xx     OMAP35xx     OMAP35xx    
2.7     2.7     2.7     2.7     2.7    
5.5     5.5     5.5     5.5     5.5    
3.15     3.15     3.15     3.15     3.15    
4     4     4     10     9    
1     1     1     1     1    
3     3     3     3     3    
1.2     1.2     1.2     1.2     1.4    
Comm Control
Power Sequencing    
Comm Control
Power Sequencing    
Comm Control
Power Sequencing    
Comm Control
Power Sequencing    
Comm Control
Power Sequencing    
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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