OTG-enabled I2C adjustable 2.5A single-cell battery charging chip
HL7002A
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HL7002A is a simple, fully integrated, all-in-one switch mode lithium-ion battery charging chip that can charge a single cell battery with a maximum current of 2.5A. This chip can charge the battery without power path management, providing a low-cost, compact charging solution for portable devices such as smartphones, tablets, and power banks. To further reduce costs and size while improving charging efficiency, the charger eliminates the charging current detection resistor and employs a unique detection method to achieve precise charging current control. It optimizes the internal power switch to achieve high efficiency under different input voltages, shortening charging time.
HL7002A supports multiple input sources, including standard USB host ports, USB charging ports, and AC-DC adapters. It supports an input operating voltage range from 4.0V to 9.5V, allowing it to power the system even without a battery. It supports BC1.2 detection, and additionally, it is equipped with BC1.2 detection functionality to ensure appropriate input current limiting, thereby optimizing the utilization of the input power source.
When connected to an I2C host, HL7002A can independently handle lithium battery charging. It monitors the battery voltage while executing the charging process in three stages: pre-charge, constant current, and constant voltage, and stops charging once fully charged. If the battery voltage is detected to be too low, it restarts the charging process. The chip can communicate via the I2C interface to set the charging current, and in the absence of I2C host communication, a built-in timer ensures that the chip safely stops charging within a specified time.
HL7002A supports OTG functionality, allowing the output voltage to be configured on VBUS, with a maximum output current of 1.2A. HL7002A integrates comprehensive protection mechanisms for input over-voltage, under-voltage, VBAT over-voltage, inductor over-current, thermal regulation, and thermal shutdown, ensuring safe operation. HL7002A comes in a compact 1.6mm x 2.0mm WLCSP-20 package.
Product Brief Datasheet
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- 商品名: HL7002A
- 产品名称: OTG-enabled I2C adjustable 2.5A single-cell battery charging chip
- 产品简介: HL7002A is a simple, fully integrated, all-in-one switch mode lithium-ion battery charging chip that can charge a single cell battery with a maximum current of 2.5A. This chip can charge the battery without power path management, providing a low-cost, compact charging solution for portable devices such as smartphones, tablets, and power banks. To further reduce costs and size while improving charging efficiency, the charger eliminates the charging current detection resistor and employs a unique detection method to achieve precise charging current control. It optimizes the internal power switch to achieve high efficiency under different input voltages, shortening charging time. HL7002A supports multiple input sources, including standard USB host ports, USB charging ports, and AC-DC adapters. It supports an input operating voltage range from 4.0V to 9.5V, allowing it to power the system even without a battery. It supports BC1.2 detection, and additionally, it is equipped with BC1.2 detection functionality to ensure appropriate input current limiting, thereby optimizing the utilization of the input power source. When connected to an I2C host, HL7002A can independently handle lithium battery charging. It monitors the battery voltage while executing the charging process in three stages: pre-charge, constant current, and constant voltage, and stops charging once fully charged. If the battery voltage is detected to be too low, it restarts the charging process. The chip can communicate via the I2C interface to set the charging current, and in the absence of I2C host communication, a built-in timer ensures that the chip safely stops charging within a specified time. HL7002A supports OTG functionality, allowing the output voltage to be configured on VBUS, with a maximum output current of 1.2A. HL7002A integrates comprehensive protection mechanisms for input over-voltage, under-voltage, VBAT over-voltage, inductor over-current, thermal regulation, and thermal shutdown, ensuring safe operation. HL7002A comes in a compact 1.6mm x 2.0mm WLCSP-20 package.
- Supports 4.0V-9.5V operating voltage
- High efficiency 2.5A switch charging
- Efficiency is 93%, 9V input, 4V/2.5A output, 1uH/30mohm
- Input current limiting compliant with USB standards
- Compliant with USB 1.0/2.0/3.0 input current limits
- Supports programmable input current limiting from 0.1A to 2.5A, step 100mA
- Autonomous pre-processing/constant current/constant voltage charging control, termination and recharging
- Programmable switching frequency 0.85MHz/1.2MHz/1.7MHz
- Input voltage range: 3.9V-9V
- No external detection resistor required
- High precision
- Charging voltage accuracy range: ±0.5%
- Charging current accuracy range: ±10%, 1.5A-2A
- Charging current accuracy range: ±200mA, 2A-2.5A
- Integrated reverse boost
- Output voltage accuracy: ±3%, 5.0V to 5.45V
- 0.5A/1.2A constant current limit output
- 300uF capacitor load can be enabled
- Comprehensive protection
- VBUS overvoltage protection
- VBAT overvoltage protection
- Reverse battery leakage protection
- Switch overcurrent protection
- Thermal regulation and thermal shutdown
- VOTG output overvoltage protection
- OTG overload protection
- Safety timer and watchdog timer
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- Smartphone
- MP3 Player
- Tablet
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For the full datasheet, please contact sales.cn@halomicro.com to submit your request.
For more sample information, please contact Get samples to submit your request,
or contact marketing@halomicro.cn by email to state your requirements.
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