Halo Micro HL7090N01 Li-ion Batt Switching Charger IC
The HL7090 is a compact, flexible, high-efficiency, USB compliant switch-mode charge management device for single cell Li-ion and Li-polymer battery used in the applications of ear pods and e-cigarettes. The charge parameters can be programmed through I2C interface (HL7090FN03 version). The HL7090 integrates a synchronous PWM controller, power MOSFET, input current sensing, high-accuracy current and voltage regulation, and charge termination function into a tiny QFN package. Dampers are acoustic cloth screens for insertion inside acoustic tubing. These damping elements are used between the receiver outlet and the ear canal to smoothen the frequency response. Various acoustical resistances and sizes are available.
Part no.: HL7090N01
Key features
- Fully automatic and efficient charge management for lithium battery
- Automatic conditioning, CC/CV charge control, termination, and recharge
- Programmable charge current using an external resistor and 68mΩ sensing resistor 1.5MHz Synchronous PWM, 4.7µH low profile inductor
- Charge current regulation accuracy: ±5%
- Charge voltage regulation accuracy: ±0.3% (TJ=25°C), ±1% (TJ=0°C to 85°C), ±2% (TJ=0°C to 125°C)
- 10V Input voltage AMR, 6V max operating voltage
- Input voltage based dynamic power management (VIN DPM)
- Input voltage based dynamic power management (VIN DPM)
- Power up without battery
- Automatic adapter fault detection
- High impedance mode (low power mode) with low power consumption
- Integrated power MOSFET with max 900mA charge current
- Automatic charge and USB compliant start sequence
- Comprehensive protections
- Reverse battery leakage protection
- Thermal regulation and shutdown
- Input & output over-voltage protection
- PMID short protection
- Integrated boost
- Input voltage range from battery 2.5-4.5V
- 5.0V/ 500mA (VICSN ≥ 3.0V) for HL7090FN01
- 4.7-5.4V/500mA for HL7090FN03
- 2A Output current limit
- OTP selectable VOUT target for HL7090FN01
- Two load switches with max 250mA current limit and auto load detection
- Battery temperature sensing in charging and boost
- Full range programmable charge parameter through I2C compatible interface (HL7090FN03)
- Autonomous battery charging with or without host management
- Battery charge enable/disable
- Battery charge preconditioning
- Charge termination and recharge
- 3mm x 3mm QFN-20 package
Applications
- IoT
- Smart Wearables
Industries
Halo Micro HL7090N01 Li-ion Batt Switching Charger IC datasheet
Halo Micro HL7090N01 Li-ion Batt Switching Charger IC datasheet
