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IP5306 LiPo Charger Booster USB-C

1 year ago 2030
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LiPo battery charger, protector and 5V booster based on the IP5306 with USB-C input 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.



This work is licensed under Creative Commons Attribution-ShareAlike 3.0 Unported License. (


IP5306 LiPoChargerBooster USB-C



ID Name Designator Footprint Quantity BOM_Manufacturer Part BOM_Manufacturer BOM_Supplier BOM_Supplier Part
1 Connector VOUT,VIN,BAT HDR-1X2/2.54 3 2.54-1*2PFemale BOOMELE LCSC C49661
2 10u C2,C1,C7,C6 0805 4 CL21A106KAYNNNE SAMSUNG LCSC C15850
3 22u C3,C5,C4 0805 3 CL21A226MAQNNNE SAMSUNG LCSC C45783
4 1uH L1 IND-706628_IND_0630_VAN 1 MCS0630-1R0MN2 Prosperity Dielectrics LCSC C385251
6 2R R3,R4 0805 2 RS-05L2R00FT Guangdong Fenghua Advanced Tech LCSC C304864
7 5k1 R6,R5 0805 2 0805W8F5101T5E UniOhm LCSC C27834
8 10k R1 0805 1 0805W8F1002T5E UniOhm LCSC C17414
9 20R R2 0805 1 0805W8F200JT5E UniOhm LCSC C17544
10 USB-TYPE-C-6PIN USB1 USB-C-SMD-6P 1 TYPE-C-31-M-17 Korean Hroparts Elec LCSC C283540
11 IP5306 U1 SOP-8_EP_150MIL 1 IP5306_4.35V INJOINIC LCSC C384572
12 PWR LED5 LED-0805 1 ORH-B35A Orient LCSC C205441
13 100% LED4 LED-0805 1 0805G (Green) KENTO LCSC C2297
14 75% LED3 LED-0805 1 17-21SUYC/TR8 KENTO LCSC C2296
15 50% LED2 LED-0805 1 17-21SUYC/TR8 KENTO LCSC C2296
16 25% LED1 LED-0805 1 FC-2012HRK-620D NATIONSTAR LCSC C84256


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Comments (3)

4e131906 Reply

Hey @wagiminator :)

I decided to use the usb-c part of your design into my 6V-2A boost project.
I discussed on reddit the pcb, and someone linked a very interesting doc about usb-c power negotiation.

It seems that hooking the usb-c with the two simple 5k1 resistors doesn't comply with proper usb-c power negotiation and will instantly try to draw 3A, even if the power delivery doesn't supports it. Have you experienced some related issues? Have you considered this ? :)


Stefan Wagner Reply

@4e131906  Hi,
"An upstream facing port must connect a valid Rp pull-down resistor to GND (or optionally, a voltage clamp) to both CC1
and CC2 pins. A 5.1kΩ ± 10% is the only acceptable resistor if USB Type-C charging of [email protected] or [email protected] is to be
used." The IP5306 draws the current it needs, which is always less than 3A. Of course you have to choose a power supply which is capable of delivering min [email protected]! I've tested the charger with different power supplies and they all worked.

4e131906 Reply

Thank you very much Stefan :)

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