Complete scheme diagram of lth7 five pin chip fs4054 charging circuit principle

LTH7 Patch 5 Pin charging chip FS4054

Single lithium battery protection circuit Single section 3.7V The lithium battery （ Also called 4.2V） and 3.8V The lithium battery （ Also called 4.35V）
Single lithium battery charging circuit 4.2V Of LTH7 chip , FS4054,4.35V Of LTH7 chip , FS4056
Single lithium battery output circuit The regulated output of lithium battery conversion is ：1.2V,3.3V,5V,12V wait
1-3 Charge and discharge chip table of lithium battery ( Dozens of chip classification diagrams )
Lithium battery charging and discharging complete circuit combination Protection circuit + Charging circuit + Boost circuit +LDO circuit + Step down circuit
On lithium batteries , Three circuit systems are required ： 1, Lithium battery protection circuit , 2, Lithium battery charging circuit , 3, Lithium battery output circuit . Charge and discharge , It can be seen from here that the lithium battery charging circuit and the lithium battery supply power to the lithium battery output circuit together .A ,LTH7 Patch 5 Pin charging chip
LTH7 It's a single lithium battery charging circuit chip , FS4054
, Responsible for USB Oral 5V Power Supply , Switching step-down is suitable for 3.7V Lithium battery charging , And provide a LED Indicator light , Control system for indicating long-term on of charging and full off of light , It also has a battery voltage monitoring circuit , Monitor the battery voltage in real time , Stop charging when fully charged .

With lithium batteries such as ：3.7V Of 18650,3.7V Polymer lithium battery, etc. if it is 3.8V Li ion batteries , Please use FS4056 了 .

Lithium battery yes 3 Large circuit system , Out of the lithium battery charging circuit FS4054
chip （LTH7） Outside , And other 2 Large basic circuit .

Charge and discharge , It can be seen from here that the lithium battery charging circuit and the lithium battery supply power to the lithium battery output circuit together .
A ,LTH7 Patch 5 Pin charging chip
LTH7 It's a single lithium battery charging circuit chip ,FS4054, Responsible for USB Oral 5V Power Supply , Switching step-down is suitable for 3.7V Lithium battery charging , And provide a LED Indicator light , Control system for indicating long-term on of charging and full off of light , It also has a battery voltage monitoring circuit , Monitor the battery voltage in real time , Stop charging when fully charged .