{"product_id":"tp4056-li-ion-battery-charger-ic-sop8-1a-cc-cv-4-2v-usb-10pack","title":"TP4056 Li-ion Battery Charger IC — SOP-8, 1A CC\/CV, 4.2V, USB Input (10-Pack)","description":"\u003ch2\u003eTP4056 Li-ion Battery Charger IC — SOP-8, 1A CC\/CV, 4.2V Termination (10-Pack)\u003c\/h2\u003e\u003cp\u003eThe TP4056 is a complete constant-current\/constant-voltage (CC\/CV) linear charger IC for single-cell lithium-ion and lithium-polymer batteries in a SOP-8 SMD package. With a 4.2V preset termination voltage, programmable charge current up to 1A (via single external resistor), thermal regulation, and charge status outputs, it is the most widely used Li-ion charger IC in DIY power banks, portable electronics, and embedded battery-powered devices. It is the core IC in the ubiquitous TP4056 USB charging module.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Topology\u003c\/td\u003e\n\u003ctd\u003eCC\/CV linear charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e4.0V – 8.0V (USB 5V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge Voltage\u003c\/td\u003e\n\u003ctd\u003e4.2V ±1% (preset, single-cell Li-ion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Charge Current\u003c\/td\u003e\n\u003ctd\u003e1A (set by RPROG resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge Current Setting\u003c\/td\u003e\n\u003ctd\u003eIBAT = 1000 \/ RPROG (kΩ) mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination\u003c\/td\u003e\n\u003ctd\u003e1\/10 charge current (C\/10)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Regulation\u003c\/td\u003e\n\u003ctd\u003eYes (reduces current at high temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Outputs\u003c\/td\u003e\n\u003ctd\u003eCHRG (charging, active-low), STDBY (full, active-low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eCharge Current Setting (RPROG Resistor)\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRPROG Value\u003c\/th\u003e\n\u003cth\u003eCharge Current\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10kΩ\u003c\/td\u003e\n\u003ctd\u003e100mA\u003c\/td\u003e\n\u003ctd\u003eSmall LiPo (\u0026lt;200mAh)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5kΩ\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003ctd\u003e200–500mAh LiPo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2kΩ\u003c\/td\u003e\n\u003ctd\u003e500mA\u003c\/td\u003e\n\u003ctd\u003e500mAh–1000mAh Li-ion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.2kΩ\u003c\/td\u003e\n\u003ctd\u003e800mA\u003c\/td\u003e\n\u003ctd\u003e1000–2000mAh Li-ion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1kΩ\u003c\/td\u003e\n\u003ctd\u003e1000mA (1A)\u003c\/td\u003e\n\u003ctd\u003e2000mAh+ Li-ion (standard TP4056 module)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose TP4056?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle external resistor\u003c\/strong\u003e — sets charge current from 100mA to 1A with one resistor, no complex programming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.2V ±1% accuracy\u003c\/strong\u003e — safe and accurate termination voltage for standard Li-ion cells\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal regulation\u003c\/strong\u003e — automatically reduces charge current if IC temperature exceeds 120°C, preventing damage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCHRG\/STDBY status pins\u003c\/strong\u003e — drive LEDs to indicate charging and full-charge status\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB 5V input compatible\u003c\/strong\u003e — charges directly from USB power bank, phone charger, or computer USB port\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY USB power bank\u003c\/strong\u003e: TP4056 + 18650 Li-ion cell + MT3608 boost (5V output) for portable USB charger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino battery shield\u003c\/strong\u003e: TP4056 + LiPo cell + 3.3V LDO for battery-powered Arduino Pro Mini\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP8266\/ESP32 battery power\u003c\/strong\u003e: TP4056 + 1000mAh LiPo + AMS1117-3.3 for WiFi IoT sensor node\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWearable electronics\u003c\/strong\u003e: TP4056 + 150mAh LiPo (RPROG=6.8kΩ for 150mA charge) for compact wearable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar charging\u003c\/strong\u003e: TP4056 input from 5V solar panel for daytime Li-ion charging\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can TP4056 charge LiPo (lithium polymer) batteries?\u003c\/strong\u003e\u003cbr\u003eA: Yes — standard LiPo batteries use the same 4.2V\/cell chemistry as Li-ion. TP4056 is compatible with both Li-ion (cylindrical, e.g., 18650) and LiPo (flat pouch) cells. Set RPROG for a charge current of 0.5C–1C of the battery capacity (e.g., 500mA for a 500mAh LiPo).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does TP4056 include battery protection (overcharge, overdischarge, short circuit)?\u003c\/strong\u003e\u003cbr\u003eA: No — TP4056 is a charger IC only, not a battery protection IC. It prevents overcharging (terminates at 4.2V) but does not protect against overdischarge or short circuit. For complete protection, add a DW01A + FS8205A protection circuit or use a pre-protected 18650 cell. The popular TP4056 module with DW01A adds this protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between TP4056 and TP4056-42 (or TP4056E)?\u003c\/strong\u003e\u003cbr\u003eA: TP4056 and TP4056-42 are functionally identical — both charge to 4.2V with the same CC\/CV profile. TP4056E is an enhanced version with slightly improved accuracy. All are pin-compatible and interchangeable in the same circuit.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e10× TP4056 Li-ion Battery Charger IC (SOP-8)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991464235243,"sku":"\u003cnone\u003e","price":6.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tp4056-lithium-battery-charging-ic-sop8-smd.webp?v=1761720643","url":"https:\/\/keszoox.com\/products\/tp4056-li-ion-battery-charger-ic-sop8-1a-cc-cv-4-2v-usb-10pack","provider":"Keszoox","version":"1.0","type":"link"}