I. Overview

XR5536 is a USB nickel-cadmium/nickel-hydride charging management IC, primarily used in USB chargers for nickel-cadmium/nickel-hydride batteries.

This chip is a type of control stabilityReliable charging management circuit. The entire circuit controls the charging current size by detecting the battery voltage. The circuit employs -△VQuick charge termination method ensures optimal battery charge level. The chip features an internal high-precision ADC, accurately sampling battery voltage and charging current in real-time.And processed through intelligent algorithms, reliably charging.

II. Product Features

1Charge 1 to 4 Ni-Cd/Ni-MH batteries.

2The chip operates at a working voltage of 5V and has a power supply range of 3.5V to 7.5V.

3The chip is designed with an integrated 10-bit ADCThe sampled battery voltage and current can be converted to analog, and the digital signal is then output to the arithmetic logic unit for detection.

4. IC integrated with automatic current regulator; features automatic current regulation when the boost voltage reaches its maximum or the input voltage is lowered. The automatic current regulation function will adjust the current accordingly.Adjust to the maximum current.

5. The IC internally detects the USB power supply voltage, and when the USB power voltage is lowered to a certain threshold, it reduces the charging current to protect the safety of the USB power supply.

USBIncrease the charging current after the power voltage rises.

6. The IC features a power-on short-circuit alarm function to ensure the safety of the battery and the IC itself.

7. The IC features over-temperature protection. When the internal temperature of the chip becomes too high, the output is shut off, and it resumes operation after the temperature stabilizes.

8. Drive LED output display to indicate charging status.

9XR5536A is in ESOP8 packaging (with a heat dissipation pad on the bottom); XR5536B is in SOP8 packaging (without a heat dissipation pad on the bottom).