Description
z Input Voltage Based Dynamic Power Management (VIN
z The TD9157 is a compact, flexible, high‐efficiency, z USB‐friendly switch‐mode charge management device for
single‐cell Li‐ion and Li‐polymer batteries used in a wide z range of portable applications. The charge parameters can be
programmed through an I2C interface. The IC integrates a z
synchronous PWM controller, power MOSFETs, input current z
sensing, high‐accuracy current and voltage regulatio
Features
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z USB Friendly Boot‐Up Sequence z Automatic Charging
z Boost Mode Operation for USB OTG
z Power Up System without Battery z Charge Faster than Linear Chargers
Input Voltage Range (from Battery): 3.2 V to 4.5V z 2.1 mm x 2 mm 20‐Pin WCSP Package
z High‐Accuracy Voltage and Current Regulation
Input Current Regulation Accuracy: ±5%(100 mA and 500 .
TD9157-Techcode.pdf
