Gehäuseinformationen
| Gehäuse | Pins VQFN (RSL) | 48 |
| Betriebstemperaturbereich (°C) -40 to 105 |
| Gehäusemenge | Träger 250 | SMALL T&R |
Merkmale von TPS65217
- Charger and Power Path
- 2-A Output Current on Power Path
- Linear Charger; 700-mA Maximum Charge Current
- 20-V Tolerant USB and AC Inputs
- Thermal Regulation, Safety Timers
- Temperature Sense Input
- Step-Down Converter (DCDC1, DCDC2,
DCDC3)
- Three Step-Down Converter 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
- Typical 15-µA Quiescent per Converter
- Passive Discharge to Ground When Disabled
- LDO Regulators (LDO1, LDO2)
- Two Adjustable LDOs
- LDO2 can be Configured to Track DCDC3
- 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
- Internal Low-Side Current Sinks
- Protection
- Undervoltage Lockout and Battery Fault Comparator
- Always-On Push-Button Monitor
- Hardware Reset Pin
- Password Protected I2C Registers
- Interface
- I2C Interface (Address 0x24)
- Password-Protected I2C Registers
Beschreibung von TPS65217
The TPS65217x is a single-chip power management IC (PMIC) specifically designed to power the AM335x ARM® Cortex®-A8 processor in portable and 5-V line-powered applications. The PMIC device provides a linear battery charger for single-cell Li-ion and Li-polymer batteries, dual-input power path, three step-down converters, four low-dropout (LDO) regulators, and a high-efficiency boost converter to power two strings of up to 10 LEDs each. The system can be supplied by any combination of USB port, 5-V AC adaptor, or Li-Ion battery. The device is characterized across a –40°C to +105°C temperature range which makes it suitable for industrial applications. Three high-efficiency 2.25-MHz step-down converters can providing the core voltage, memory, and I/O voltage for a system. The TPS65217x device comes in a 48-pin leadless package (6-mm × 6-mm VQFN) with a 0.4-mm pitch.