Introduction to the Chip of Lithium Battery

Introduction of lithium battery Charging Management Chip

1, SL1053

Linear lithium battery chips SL1053, SL1053 is a circuit designed specifically for high-precision linear lithium battery chargers, which is very suitable for those low-cost, portable chargers.

2, TP 4056

TP 4056 is a complete single-segment lithium-ion battery with a constant current / constant voltage linear charger. The SOP8 package with a heat sink at the bottom and a smaller number of external components make TP 4056 an ideal choice for portable applications. TP 4056 can be suitable for USB power supply and adapter power supply work.

3, HL 7016

The HL 7016 is the first fully integrated switch mode charger with 12V high voltage input in China, which implements high input voltage and USB OTG lift mode and I2C interface programmable. The chip has a number of detection and protection functions such as voltage, current, and temperature. Through the I2C interface, voltage and current parameters are set and adjusted to ensure the charging safety of lithium batteries. In addition, the chip also has a built-in battery activation function to solve the system failure caused by the short circuit of the battery. Compared with traditional charging methods, the use of HL 7016 reduced the charging time by more than half.

4, CS0301

CS0301 is a high-precision intelligent battery charging management chip with full function, low price, high integration, simple external circuit, and convenient adjustment.

5, LTH7

LTH7(Model: PL 4054) is a complete single-segment lithium-ion battery with a constant current / constant voltage linear charger. Its SOT package and less number of external components make the PL 4054 an ideal choice for portable applications.

6, CH 4054

The CH4054 is a single-segment lithium-ion battery constant current / constant voltage linear charger. A simple external application circuit is very suitable for portable device applications. It is suitable for USB power supply and adapter power supply. The interior uses an anti-overcharging circuit and does not require an external isolation diode. Thermal feedback can automatically adjust the charging current to limit the chip temperature under high-power operation or high ambient temperature conditions.

Linear lithium battery charging chip SL1053, SL1053 is a circuit designed specifically for high-precision linear lithium battery chargers, very suitable for those low-cost, portable chargers. [ 1]

Linear lithium battery charging chip SL1053 is a combination of high-precision pre-charging, constant current charging, constant voltage charging, battery status testing, temperature monitoring, charging end low leakage, charging state indication, etc.. It can be widely used in PDAs, mobile phones, handheld devices, and other fields.

SL1053 determines its charging state by detecting the battery voltage: pre-charge, constant current charge, constant voltage charge. When the battery voltage is less than the threshold voltage VO(MIN), it is in a pre-charging state and the battery is charged with a smaller current. The Pre-Charged current can be adjusted by the external resistance. After pre-charging, the battery voltage reaches VO(MIN) and enters a fast charging state of constant current charging. The charging current can be adjusted by the peripheral resistance. Constant current charging causes the battery voltage to rise to a constant voltage charging voltage VO(REG)(usually 4.2 V). Then enter a constant voltage charging state. The accuracy of the charging voltage is better than ± 1 %. In this state, the charging current will gradually decrease. When the charging current is less than the threshold, the charging end. After charging, the battery voltage will always be monitored. When the battery voltage is less than the threshold VO(RCH), the battery will be recharged and entered the next charging cycle. For safety, during the entire charging process,

SL1053 monitors the temperature of the battery using the thermistor inside the battery and the appropriate peripheral resistance so that the temperature of the battery can be controlled within the range set by the user.

1. An ideal control circuit for a single lithium ion or lithium polymer battery charger;

SOP8 package size diagram

SOP8 package size diagram[ 2]

2. Voltage accuracy above 1 %;

3. Pre-charge process, the user can change the pre-charge current;

4. Constant current charging, charging currently adjustable;

5. Constant voltage charging process;

6. Automatic recharging process;

7. Temperature monitoring during charging;

8. Two-way LED charging status indicator;

9. Detection of abnormal battery conditions;

10. At the low voltage of the power supply, in the low-power Sleep mode, the battery leakage current is minimal;

11. Very few peripheral components;

12. Miniaturized SOP8 package

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