BQ25040
- 30V Input Rating, with Overvoltage Protection (OVP)
- Input Voltage Dynamic Power Management Feature
- 50mA Integrated Low Dropout Linear Regulator (LDO)
- 1% Charge Voltage Regulation Accuracy
- 10% Charge Current Accuracy
- Single-Input Interface Selects USB 100mA, 500mA or User-Programmable Maximum Input Current Limit
- 4.2V at 2.3A Production Test Mode
- Thermal Regulation and Thermal Shutdown Protection for Output Current Control
- Soft-Start Feature to Reduce Inrush Current
- Status Indication - Power Good and Charging/Done
- Available in Small 2mm × 3mm DFN-10 Package
- APPLICATIONS
- Mobile Phones
- Smart Phones
- Portable Media Players
- Portable Navigation Devices
- Low-Power Handheld Devices
The bq25040 is an integrated Li-ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC adapter and charges a single cell Li-Ion battery with up to 1.1A of charge current.
The bq25040 has a single power output that charges the battery. A system load can be placed in parallel with the battery. The charge current is programmed using the ISET and EN/SET inputs. The input current limit is programmable to USB100, USB500 or a user programmed current limit up to 1.1A. Additionally, a 4.9V ±3% 50mA LDO is integrated into the IC for supplying low power external circuitry. The single-input interface (EN/SET) is used to select the charge current and to place the bq25040 into Production Test Mode. In Production Test Mode, the bq25040 operates as a linear regulator without a battery connected, where the output is regulated at 4.2V and supplies up to 2.3A to calibrate GSM transceivers.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded.
The charger power stage and charge current sense functions are fully integrated. The charger function has accuracy current and voltage regulation loops, charge status display, and charge termination.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | 1.1A, Single-Input, Single Cell Li-Ion Battery Charger With 50mA LDO データシート (Rev. B) | 2009年 3月 24日 | |||
セレクション・ガイド | 電源 IC セレクション・ガイド 2018 (Rev. R 翻訳版) | 英語版 (Rev.R) | 2018年 9月 13日 | |||
ユーザー・ガイド | BQ25040EVM User's Guide. | 2009年 4月 27日 |
設計および開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
BQ25040EVM — BQ25040 評価モジュール: 1.1A、シングル入力、単セル、リチウムイオン・バッテリー充電器
The BQ25040EVM is an evaluation module (EVM) for BQ25040. The bq25040 is an integrated Li-ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or ac adapter and charges a single-cell, Li-Ion battery with up to 1.1 A of charge current. (...)
パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
---|---|---|
WSON (DQC) | 10 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点