TSM1052

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	--
Number of Cells:	--
Current - Charging:	Constant
Programmable Features:	--
Fault Protection:	--
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	18V
Interface:	--
Operating Temperature:	-10°C ~ 85°C (TA)
Package / Case:	SOT-23-6
Supplier Device Package:	SOT-23-6
Base Part Number:	TSM1052

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Introduction

The TSM1052 is a high-efficiency, programmable battery charger designed for use in low-power, hand-held device applications. It can charge single-cell Li-Ion and Li-Poly cells. It supports a wide range of charge current up to 1.8 A and a voltage range up to 4.2V with low heat dissipation. This charger works with a wide variety of power sources, including AC adapters and USB ports. The TSM1052 is an ideal solution for compact, low cost, and efficient battery charging circuits.

Application Field

The TSM1052 battery charger is suitable for use in a variety of applications, such as hand-held device battery charging, power bank, USB power adapters, medical devices and wearable devices. The small size of the TSM1052 makes it ideal for battery charging applications where space is limited. Furthermore, the device’s wide-input voltage range, programmable charge current and voltage, and high efficiency make it suitable for a wide range of charging applications.

Working Principle

The TSM1052 battery charger uses a proprietary charging method to provide a controlled charge to the battery. The charging process is controlled by three pins: VCC, PRE, and SYS.When the PRE pin is pulled low and the device is powered on, the charger enters the pre-charge stage. During this phase, the charger begins charging the battery with a lower current (approximately 500 mA) in order to protect the battery from damage due to overcharging. Once the battery reaches a certain charge level, the charger switches to the constant-voltage stage, where it charges the battery with a constant voltage and a programmed current.To protect the battery from overvoltage, the TSM1052 monitors the voltage during the constant-voltage phase. If the voltage exceeds the selected voltage (programmed via the SYS pin), the charging process is stopped.The charger monitors the battery\'s temperature during charging and reduces the current if it exceeds a pre-programmed value. This prevents the battery’s temperature from increasing too much during charging, ensuring that the battery is charged safely.The TSM1052 also provides over-discharge protection, which prevents the battery from discharging too much. Once the battery voltage falls below the low-voltage threshold, the charge circuit is disabled automatically, protecting the battery from over-discharge.

Conclusion

The TSM1052 is a highly efficient and programmable battery charger designed for use in low-power, hand-held device applications. It has a wide input voltage range, a programmable charge current and voltage, and high efficiency. It is suitable for a variety of applications and provides over-charge and over-discharge protection. The TSM1052 is a perfect solution for efficient and compact battery charging circuits.

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