●Description
●The TPS65200 device integrates a high-efficiency, USB-friendly switched-mode charger with OTG support for single-cell Li-ion and Li-polymer batteries, D+D- detection, a 50-mA fixed-voltage LDO, a high efficiency WLED boost converter, and high-accuracy current-shunt monitor into a single chip.
●Features
●• Battery Switching Charger, WLED Driver, and Current Shunt Monitor in a Single Package
●• Battery Charger
●– Charges Faster Than Linear Chargers
●– High-Accuracy Voltage and Current Regulation
●– Input Current Regulation Accuracy: ±5% (100 mA, 500 mA)
●– Charge Voltage Regulation Accuracy:
● ±0.5% (25°C)
● ±1% (0 - 125°C)
●– Charge Current Regulation Accuracy: ±5%
●– Bad Adaptor Detection and Rejection
●– Safety Limit Register for Maximum Charge Voltage and Current Limiting
●– High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
●– Built-In Input Current Sensing and Limiting
●– Integrated Power FETs for Up to 1.25-A Charge Rate
●– Programmable Charge Parameters through I2C Interface (Up to 400 Kbps):
●– Input Current
●– Fast-Charge/Termination Current
●– Charge Voltage (3.5 V - 4.44 V)
●– Safety Timer
●– Termination Enable
●– Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty Cycle
●– Safety Timer With Reset Control
●– Reverse Leakage Protection Prevents Battery Drainage
●– Thermal Regulation and Protection
●– Input/Output Overvoltage Protection
●– Automatic Charging
●– Boost Mode Operation for USB OTG
●– Input Voltage Range (VSYS): 2.5 V to 4.5 V
●– Output Voltage for VBUS: 5 V
●• WLED Driver
●– 35-V Open LED Protection for Up to 8 LEDs
●– 200-mV Reference Voltage With ±2% Accuracy
●– Built-In Soft Start for WLED Boost
●– Up to 90% Efficiency
●• Current Shunt Monitor
●– Fixed Gain of 25 V/V
●– Input Referred Offset Voltage Less Than ±40 µV Typical Enables Use of Shunt Resistors as Low as 20 mΩ
●– Buffered Reference Voltage
●• Package
●– 36-Ball, 0.4-mm Pitch DSBGA Package
●Applications
●• Mobile Phones and Smart Phones
●• MP3 Players
●• Portable Navigation Devices
●• Handheld Devices
