Overview
The TPS65217CRSLR is a single-chip power management IC (PMIC) designed by Texas Instruments, specifically tailored to power the AM335x ARM® Cortex®-A8 processor in various applications. This PMIC integrates multiple power management functions, including a linear battery charger, three step-down converters, four low-dropout (LDO) regulators, and a white LED driver. It supports power input from USB, 5-V AC adapters, or Li-Ion batteries, making it versatile for portable and industrial systems. The device operates across a wide temperature range of –40°C to +105°C and is packaged in a 48-pin VQFN (RSL) package with a 0.4-mm pitch.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | 48-pin VQFN (RSL) |
| Operating Temperature Range | –40°C to +105°C |
| Power Path Output Current | 2 A |
| Linear Charger Maximum Charge Current | 700 mA |
| USB and AC Input Tolerance | 20 V |
| Step-Down Converter Frequency | 2.25 MHz |
| Step-Down Converter Output Voltage Accuracy | ±2% in PWM mode |
| LDO Regulators Quiescent Current | Typical 15 µA |
| WLED Driver LED Strings | Two strings of up to 10 LEDs each at 25 mA |
| 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, and safety timers.
- Step-Down Converters: Three step-down converters with integrated switching FETs, 2.25-MHz fixed frequency operation, power-save mode at light-load current, and 100% duty cycle for lowest dropout.
- LDO Regulators: Two adjustable LDOs with the option for LDO2 to track DCDC3, and two independent load switches that can be configured as LDOs.
- WLED Driver: Internally generated PWM for dimming control, 38-V open-LED protection, and support for two strings of up to 10 LEDs each at 25 mA.
- 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: Specifically designed to power the AM335x ARM® Cortex®-A8 processor.
- Portable Navigation Systems: Suitable for navigation systems due to its compact and efficient power management.
- Tablet Computing: Ideal for tablet computing devices requiring multiple power rails and efficient battery management.
- 5-V Industrial Equipment: Used in various industrial applications requiring reliable and efficient power management.
Q & A
- What is the primary function of the TPS65217CRSLR?
The TPS65217CRSLR is a single-chip power management IC (PMIC) designed to manage power for systems, particularly those using the AM335x ARM® Cortex®-A8 processor.
- What types of power inputs does the TPS65217CRSLR support?
The device supports power input from USB, 5-V AC adapters, or Li-Ion batteries.
- How many step-down converters does the TPS65217CRSLR have?
The TPS65217CRSLR has three step-down converters with integrated switching FETs.
- What is the maximum charge current of the linear charger?
The linear charger has a maximum charge current of 700 mA.
- What is the operating temperature range of the TPS65217CRSLR?
The device operates across a temperature range of –40°C to +105°C.
- How many LEDs can the WLED driver support?
The WLED driver supports two strings of up to 10 LEDs each at 25 mA.
- What type of interface does the TPS65217CRSLR use for communication?
The device uses an I2C interface with address 0x24.
- Does the TPS65217CRSLR have any protection features?
Yes, it includes undervoltage lockout, battery fault comparator, always-on push-button monitor, and hardware reset pin.
- What is the package type and pin count of the TPS65217CRSLR?
The device is packaged in a 48-pin VQFN (RSL) package.
- Can the LDO regulators be adjusted?
Yes, the TPS65217CRSLR has two adjustable LDO regulators.
