The TPS65217 is a single-chip power management IC specifically designed to support
applications in portable and 5-V non-portable applications. It provides a linear battery charger
for single-cell Li-ion and Li-polymer batteries, dual-input power path, three step-down converters,
four LDOs, 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.
These step-down converters enter a low-power mode at light load for maximum efficiency
across the widest possible range of load currents. For low-noise applications the devices can be
forced into fixed-frequency PWM using the I2C interface. The step-down
converters allow the use of small inductors and capacitors to achieve a small solution size.
LDO1 and LDO2 can support system-standby mode. In SLEEP state, output current is limited
to 1 mA to reduce quiescent current whereas in normal operation they can support up to 100 mA each.
LDO3 and LDO4 can be configured to support up to 400 mA each and can be configured as load switches
instead of regulators. All four LDOs have a wide input voltage range that allows them to be
supplied either from one of the dc-dc converters or directly from the system voltage node.
By default only LDO1 is always ON but any rail can be configured to remain up in SLEEP
state. Especially the dc-dc converters can remain up in a low-power PFM mode to support system
The TPS65217 offers configurable power-up and power-down sequencing and several
housekeeping functions such as power-good output, pushbutton monitor, hardware reset function and
temperature sensor to protect the battery.
For details on specific applications please see our application note
The TPS65217 comes in a 48-pin leadless package (6-mm x 6-mm QFN) with a 0.4-mm
View datasheet View product folder