Overview
The TPS65070RSLT is a single-chip power management IC (PMIC) designed by Texas Instruments for portable applications. This device integrates a battery charger with power path management for a single Li-Ion or Li-Polymer cell, making it suitable for various mobile and embedded systems. The TPS65070RSLT features multiple voltage regulators, including three step-down converters, two general-purpose LDOs, and an inductive boost converter for white LED strings. It also includes an I2C interface, a 10-bit A/D converter, and a touch screen interface, enhancing its versatility and functionality.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 48-pin VQFN with thermal pad | |
| Body Size | 6.00 mm × 6.00 mm | |
| Input Voltage Range (DCDC1, DCDC2, DCDC3) | 2.8 V to 6.3 V | V |
| Maximum Output Current (DCDC1, DCDC2, DCDC3) | Up to 1.5 A | A |
| Oscillator Frequency | 2.25 MHz | MHz |
| Output Voltage Accuracy (PWM Mode) | ±1.5% | % |
| Quiescent Current per Converter | Typical 19 µA | µA |
| LDO Output Current | Up to 200 mA | mA |
| LDO Input Voltage Range | 1.8 V to 6.3 V | V |
| Boost Converter Current per String | Up to 25 mA | mA |
| I2C Interface | Available | |
| A/D Converter Resolution | 10 bits |
Key Features
- Three highly efficient 2.25-MHz step-down converters with adjustable or fixed output voltage.
- Power path management for a single Li-Ion or Li-Polymer cell with linear charger and thermal regulation.
- Two general-purpose LDOs with dynamic voltage scaling on LDO2.
- Inductive boost converter for up to 2 × 10 white LEDs with internal current sinks.
- I2C interface for configuration and control.
- 10-bit A/D converter and touch screen interface.
- Undervoltage lockout and battery fault comparator.
- Low power mode at light load for maximum efficiency.
- Small solution size using small inductors and capacitors.
Applications
- Portable navigation systems.
- PDAs and pocket PCs.
- OMAP™ and low power DSP supplies.
Q & A
- What is the primary function of the TPS65070RSLT?
The TPS65070RSLT is a power management IC (PMIC) that integrates a battery charger, power path management, and multiple voltage regulators for portable applications.
- What types of voltage regulators are included in the TPS65070RSLT?
The device includes three step-down converters, two general-purpose LDOs, and an inductive boost converter for white LED strings.
- What is the input voltage range for the step-down converters?
The input voltage range for the step-down converters is from 2.8 V to 6.3 V.
- What is the maximum output current of the step-down converters?
The maximum output current of the step-down converters is up to 1.5 A.
- Does the TPS65070RSLT support I2C interface?
- What is the resolution of the A/D converter in the TPS65070RSLT?
The A/D converter in the TPS65070RSLT has a 10-bit resolution.
- What kind of LED driver is included in the TPS65070RSLT?
The TPS65070RSLT includes an inductive boost converter that can drive up to 2 × 10 white LEDs with internal current sinks.
- What are some typical applications of the TPS65070RSLT?
Typical applications include portable navigation systems, PDAs, pocket PCs, and OMAP™ and low power DSP supplies.
- How does the TPS65070RSLT manage power efficiency at light loads?
The device enters a low power mode at light loads to maximize efficiency across a wide range of load currents.
- What is the package type and size of the TPS65070RSLT?
The TPS65070RSLT comes in a 48-pin VQFN package with a thermal pad, measuring 6.00 mm × 6.00 mm.
