LiPo battery charger, protector and 5V booster based on the IP5306 featuring:

• synchronous switch-mode charging with up to 2.1A / 91% efficiency,
• discharging with up to 2.4A,
• 5V boost converter with up to 92% efficiency,
• integrated power-path management (charging battery and 5V output at the same time),
• voltage based fuel gauge indication with 4 LEDs,
• on/off key,
• smart load detector (switching to standby mode automatically),
• less than 100uA standby current,
• charging/boosting with a single inductor,
• output over-current, over-voltage, short-circuit protection,
• input over-voltage, over-current protection,
• battery over-charge, over-drain, over-current protection,
• thermal shutdown.

Key functions:

• If button is pushed longer than 30ms but shorter than 2s, IP5306 will identify the action as short push. Short push will activate state of charge (SOC) indicator LEDs and step-up converter.
• If two short pushes are detected within 1s, IP5306 will deactivate step-up converter, SOC indicator LEDs and PWR LED (flashlight).
• If button is pushed longer than 2s, IP5306 will identify the action as long push. Long push will enable or disable PWR LED (flashlight).
• If button is pushed shorter than 30ms, IP5306 will ignore the action.

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