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2022-09-24 21:11:22
Shenzhen Harmony Family Spot Supply TexasInstrumentsTPS652170
Texas Instruments TPS652170 Single-Chip Power Management IC (PMIC) is specifically designed to power AM335x ARM® Cortex®-A8 processors in portable and 5V line-powered applications. The PMIC device contains a linear battery charger (supporting single-cell Li-Ion and Li-polymer batteries), dual input power paths, three buck 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 powered by any combination of USB ports, 5V AC adapters, or Li-Ion batteries.
The TPS652170 is rated to operate from -40°C to +105°C, making it ideal for industrial applications. Three high-efficiency 2.25MHz step-down converters provide the core voltage, memory and I/O voltages for the system. The TPS652170 device is available in a 48-pin leadless package (6mm × 6mm VQFN) with 0.4mm pitch.
characteristic
Charger and Power Path
2A output current on power path
Linear charger; 700mA maximum charge current
20V tolerant USB and AC input
Thermal regulation, safety timer
Temperature detection input
Buck Converters (DCDC1, DCDC2, DCDC3)
Three Buck Converters with Integrated Switching FETs
Fixed operating frequency: 2.25MHz
Power Save Mode at Light Load Current
The output voltage accuracy in PWM mode is ±2%_
100% duty cycle for lowest voltage drop
Typical quiescent current per converter is 15µA
Supports passive ground discharge when disabled
LDO regulators (LDO1, LDO2)
Two adjustable LDOs
LDO2 can be configured to track DCDC3
Typical Quiescent Current: 15μA
Load switch (LDO3, LDO4)
Two independent load switches, configurable as LDOs
WLED driver
Internally generated PWM supports dimming control
38V open LED protection
Supports two LED strings (up to 10 LEDs per string, 25mA per LED)
Internal low-side current sink
Protect
Undervoltage Lockout and Battery Fail Comparator
Normally Open Button Monitor
hardware reset pin
Password protected I2C registers
interface
I2C Interface (Address 0x24)
Password protected I2C registers
application
Sitara™ AM335x processor power supply
Portable Navigation System
tablet
5V Industrial Equipment