描述 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.
The TPS65200 comes in a tiny, 2.8-mm × 2.6-mm, 36-pin, 0.4-mm pitch die size ball grid array (DSBGA).

特性 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
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