Charger archives - Page 6 of 18

Part Number: HT3786D

Function: Li-ion Battery Charger IC

Package : DIP 10 Pin

Manufacturer: HotChip ( http://www.hotchip.com.cn )

Image

Description

HT3786D is a built-in reference voltage, with the amount of detection of the LCD driver universal charger control chip, with automatic battery identification Short circuit protection, over-temperature protection.

Ordering Informations

Features

1. With the amount of detection, drive LCD screen to achieve the battery energy status display

2. Automatically identify the battery polarity

3. Built-in reference source, no-load regulator output, no external components to adjust the no-load voltage

4. Short circuit protection function

5. Over-temperature protection function

6. Highly integrated, very few peripheral devices

Pinout

Application Circuit

Official Homepage: http://www.hotchip.com.cn/en/Product.asp?tid=2&SortID=33

HT3786D Datasheet

Other data sheets are available within the file: HT3786

Description – HT3582DA

1. Maximum charge current: 300mA

2. Support for 0V battery charging (battery positive connection)

3. Automatic identification battery polarity

4. Short circuit protection

5. Overtemperature protection

6. Highly integrated, very few external components

Battery load

When battery power communication and have not had access, the voltage difference between both ends of BTP and BTN 4.23V (typ), L1-L3 state
Description Table 3.

Normal charging and saturation detection

Power connectivity and access to full battery (battery voltage <4.10V [typical]), power began to pass control of the battery into HT3582DA
Line, the charging current of about 300mA (typ), gradually increasing the voltage across the battery when the battery voltage rises to 4.23V (typ)
When the battery is close to saturation, then transferred to a small current constant trickle charge mode. This process of state L1-L3 described in Table 3. when
Battery voltage <4.10V (typ), only to re-charge the battery.

Short circuit protection

If the situation occurs after power access battery short circuit, then HT3582DA internal “circuit protection” system will automatically reduce the charge current
To 25mA (typ). In this case, if the battery again to correct polarity access can still be normal charge.

Over-temperature protection

When charging the chip junction temperature exceeds TO (150 ℃ typ), the internal “over-temperature protection,” the system will automatically reduce the charge current until
The junction temperature drops to TR (120 ℃ typ), IC returns to normal charging status.