Overview
The TPS65921B1ZBHR is a highly integrated power management and USB single-chip solution from Texas Instruments. This device is designed to support the power and peripheral requirements of OMAP application processors. It combines power management, a high-speed USB transceiver, an analog-to-digital converter (ADC), a real-time clock (RTC), a keypad interface, and embedded power control (EPC) in a single package.
The device features multiple power conversion and regulation modules, including three step-down converters, four general-purpose configurable low-dropout (LDO) regulators, and a USB high-speed transceiver. It also includes auxiliary modules such as an ADC, keypad interface, and general-purpose inputs/outputs (GPIOs).
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Main Battery Supply Voltage | 0.0 | - | 5.0 | V |
| VIN Range | 2.7 | - | 4.5 | V |
| Operating Ambient Temperature | -40 | - | 85 | °C |
| Operating Junction Temperature | -40 | - | 125 | °C |
| Step-Down Converter Output Current (VDD1) | - | - | 1.4 A | A |
| LDO Maximum Current | - | - | 220 mA | mA |
| Crystal Oscillator Frequency | 32.768 | - | 32.768 | kHz |
| USB High-Speed Transceiver | - | - | - | USB HS 2.0 |
Key Features
- Three step-down converters with up to 1.4 A of output current for VDD1
- Four general-purpose configurable LDO regulators with up to 220 mA of maximum current
- USB high-speed 2.0 transceiver with integrated charge pump
- 12-bit ULPI 1.1 interface and smartReflex dynamic voltage management
- 32-kHz crystal oscillator and clock slicer for 26, 19.2, and 38.4 MHz
- 10-bit ADC and real-time clock (RTC) with alarm wake-up mechanism
- Keypad interface up to 8 × 8 with built-in scanning algorithm
- High-speed I2C interface and multiple GPIOs
- Hot-die thermal shutdown protection and dynamic voltage scaling
Applications
- Mobile phones and smartphones
- E-books and MP3 players
- Handheld devices and portable electronics
- OMAP and low-power DSP supply
Q & A
- What is the main function of the TPS65921B1ZBHR?
The TPS65921B1ZBHR is a highly integrated power management and USB single-chip solution designed to support the power and peripheral requirements of OMAP application processors.
- What are the key power management features of the TPS65921B1ZBHR?
The device includes three step-down converters, four general-purpose configurable LDO regulators, and an embedded power control (EPC) module.
- What is the maximum output current of the step-down converters?
The step-down converters can provide up to 1.4 A of output current for VDD1.
- Does the TPS65921B1ZBHR support USB high-speed operation?
Yes, it includes a USB high-speed 2.0 transceiver with an integrated charge pump.
- What is the purpose of the 32-kHz crystal oscillator?
The 32-kHz crystal oscillator is used for clock generation and timing functions within the device.
- What types of interfaces does the TPS65921B1ZBHR support?
The device supports high-speed I2C, 12-bit ULPI 1.1, and multiple GPIOs.
- What is the keypad interface capability of the TPS65921B1ZBHR?
The device supports a keypad interface up to 8 × 8 with a built-in scanning algorithm.
- Does the TPS65921B1ZBHR have thermal protection features?
Yes, it includes hot-die thermal shutdown protection.
- What are the typical applications of the TPS65921B1ZBHR?
The device is used in mobile phones, smartphones, e-books, MP3 players, and other handheld devices.
- What is the operating temperature range of the TPS65921B1ZBHR?
The operating ambient temperature range is from -40°C to 85°C.
