Texas Instruments' TPS65217 are single-chip power management ICs specifically designed to support applications in portable and 5 V, non-portable applications. They provide a linear battery charger for single-cell Li-ion and Li-polymer batteries, a dual-input power path, three step-down converters, four LDOs, and a high-efficiency boost converter to power two strings of up to ten LEDs each. The system can be supplied by any combination of USB port, 5 V AC adaptor, or Li-Ion battery. These devices are 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 provide the core voltage, memory, and I/O voltage for a system.
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- Charger/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
- Interface
- I2C interface (address 0x24)
- Password-protected I2C registers
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- Step-down converter (DCDC1, 2, 3)
- 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 is ±2.0%
- 100% duty cycle for lowest dropout
- Typical 15 µA quiescent per converter
- Passive discharge to ground when disabled
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Texas Instruments' TPS65217 are single-chip power management ICs specifically designed to support applications in portable and 5 V, non-portable applications. They provide a linear battery charger for single-cell Li-ion and Li-polymer batteries, a dual-input power path, three step-down converters, four LDOs, and a high-efficiency boost converter to power two strings of up to ten LEDs each. The system can be supplied by any combination of USB port, 5 V AC adaptor, or Li-Ion battery. These devices are 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 provide the core voltage, memory, and I/O voltage for a system.
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