SMB137

SMB137 Programmable Switching Li+ Battery Charger with USB/AC Input, CurrentPath™ Manager, TurboChargeTM Mode*, Low Battery Recovery* and USB On-The-Go Support FEATURES & APPLICATIONS Standalone or CPU-controlled operation USB or AC input with automatic input selection and programmable input current limiting (USB2.0 compliant) Up to 750mA charging output from 500mA USB port or 1500mA TM from AC adapter using proprietary “TurboCharge Mode” Input/output CurrentPath™ control allows system operation with deeply discharged/missing battery – no start-up delay “Low Battery Recovery” mode for >500mA startup from 100mA www.DataSheet4U.com USB port with deeply discharged cells – no start-up delay USB On-the-Go (OTG) power support (up to 500mA @ +5V) Reverse current blocking prevents inadvertent battery discharge High-efficiency step-down regulator with 2MHz switching Precision integrated current sensing +4.35 to +5.5V input voltage range +16V input tolerance (non-operating) High-accuracy float voltage regulation: 1.0% 2 Digital programming of all major parameters via I C interface o Pre-charge voltage, float voltage o Input/pre-charge/fast charge/term. current o Battery temperature limits, safety timers Comprehensive protection features o Status/fault indicator o Battery/IC thermal protection o Short circuit/UV/OV protection o Charge termination safety timers o Software watchdog timers Tiny CSP-30 package Advance Information INTRODUCTION The SMB137 is a ...