Overview
The TPS65217CRSLT is a single-chip power management IC (PMIC) designed by Texas Instruments. It is specifically tailored to power the AM335x ARM® Cortex®-A8 processor in various applications, including portable and 5-V line-powered systems. This PMIC integrates a comprehensive set of power management functions, including a linear battery charger for single-cell Li-ion and Li-polymer batteries, a dual-input power path, three high-efficiency step-down converters, four low-dropout (LDO) regulators, and a high-efficiency boost converter to power white LEDs.
The device can be powered by any combination of a USB port, a 5-V AC adapter, or a Li-Ion battery, making it versatile for different power sources. It operates across a wide temperature range of –40°C to +105°C, which makes it suitable for industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | VQFN-48 | - |
| Package Size | 6.00 mm × 6.00 mm | - |
| Pins | 48 | - |
| Operating Temperature Range | –40 to 105 | °C |
| Output Current (DCDC1, DCDC2, DCDC3) | 0 to 1.2 | A |
| Output Current (LDO1, LDO2) | 0 to 100 | mA |
| Output Current (LS1 or LDO3, LS2 or LDO4 configured as LDOs) | 0 to 200/400 | mA |
| Switching Frequency (DCDC1, DCDC2, DCDC3) | 2.25 MHz | - |
| Quiescent Current per Converter | Typical 15 µA | - |
| LED Driver Current per String | Up to 25 mA each | - |
| I2C Interface Address | 0x24 | - |
Key Features
- Charger and Power Path: 2-A output current on power path, linear charger with 700-mA maximum charge current, 20-V tolerant USB and AC inputs, thermal regulation, safety timers, and temperature sense input.
- Step-Down Converters (DCDC1, DCDC2, DCDC3): Three step-down converters with integrated switching FETs, 2.25-MHz fixed frequency operation, power-save mode at light-load current, output voltage accuracy in PWM mode ±2%, 100% duty cycle for lowest dropout, and typical 15-µA quiescent current per converter.
- LDO Regulators (LDO1, LDO2): Two adjustable LDOs, with LDO2 configurable to track DCDC3, and typical 15-µA quiescent current.
- Load Switches (LDO3, LDO4): Two independent load switches that can be configured as LDOs.
- WLED Driver: Internally generated PWM for dimming control, 38-V open-LED protection, supports two strings of up to 10 LEDs at 25 mA each, and internal low-side current sinks.
- Protection Features: Undervoltage lockout, battery fault comparator, always-on push-button monitor, hardware reset pin, and password-protected I2C registers.
- Interface: I2C interface with address 0x24 and password-protected I2C registers.
Applications
- Sitara™ AM335x Processor Power
- Portable Navigation Systems
- Tablet Computing
- 5-V Industrial Equipment
Q & A
- What is the TPS65217CRSLT used for?
The TPS65217CRSLT is a single-chip power management IC (PMIC) designed to power the AM335x ARM® Cortex®-A8 processor in portable and 5-V line-powered applications.
- What types of batteries does the TPS65217CRSLT support?
The device supports single-cell Li-ion and Li-polymer batteries.
- What is the maximum charge current of the linear charger?
The maximum charge current of the linear charger is 700 mA.
- How many step-down converters does the TPS65217CRSLT have?
The device has three high-efficiency step-down converters.
- What is the switching frequency of the step-down converters?
The switching frequency of the step-down converters is 2.25 MHz.
- What is the quiescent current per converter?
The typical quiescent current per converter is 15 µA.
- How many LEDs can the WLED driver support?
The WLED driver supports two strings of up to 10 LEDs each at 25 mA.
- What is the operating temperature range of the TPS65217CRSLT?
The operating temperature range is –40°C to +105°C.
- What interface does the TPS65217CRSLT use for communication?
The device uses an I2C interface with address 0x24.
- Are the I2C registers password-protected?
Yes, the I2C registers are password-protected.
