Key facts
- Brand
- STMicroelectronics
- Model
- STW4102
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics STw4102 Dual USB/Wall Adapter Li-ion Battery Charger Datasheet
The STw4102 is a standalone constant current constant voltage (CCCV) linear charger specifically designed for Li-ion batteries. It supports dual charging capability using separate inputs for a USB cable and a wall adapter, or a single input that accepts both. The device features programmable charge voltage with 1% accuracy and supports fast charge currents up to 1 A for wall adapters and 500 mA for USB ports.
Read onlineSTMicroelectronics STW4102 specifications
| Main charge current range | 100 mA to 1000 mA |
|---|---|
| Programmable charge voltage | 4.1 V, 4.2 V, 4.3 V, 4.35 V |
| Wall adapter voltage | up to 16 V |
| Battery overvoltage protection | 4.7 V |
| Gas gauge resolution | 13-bit AD converter |
| Operating temperature range | -30°C to 85°C |
Source: STMicroelectronics STw4102 Dual USB/Wall Adapter Li-ion Battery Charger Datasheet
All STMicroelectronics STW4102 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the maximum charge current for the wall adapter?
The maximum fast charge current for the wall adapter is up to 1 A.
From: STMicroelectronics STw4102 Dual USB/Wall Adapter Li-ion Battery Charger Datasheet
What is the maximum charge current for the USB port?
The maximum fast charge current for the USB port is up to 500 mA.
From: STMicroelectronics STw4102 Dual USB/Wall Adapter Li-ion Battery Charger Datasheet
What is the default maximum battery capacity considered by the firmware?
The firmware considers a battery capacity of 1200 mAh by default.
What is the maximum charging current for the USB port?
The board can supply a maximum battery charging current of 400 mA for a USB port.
What is the STw4102 used for?
It is used for Li-ion battery charging and monitoring in handheld devices like mobile phones and portable navigation devices.
How does the STw4102 control charging?
The charge function is a standalone constant-current constant-voltage (CCCV) linear charger dedicated to the one-cell Li-lon battery.