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MyMaxim 订阅产品详情
主要特征
应用/用途
Parametric specs for Battery Chargers
| Charging VIN (V) (max) | 20 |
| Max. ICHG (A) | 2 |
| Cell Chemistry | Li-Ion Li-Polymer NiCd NiMH |
| # NiMH/ NiCd Cells | 1 2 3 4 5 6 7 8 9 10 11 |
| # Lithium Ion Cells | 1 2 |
| Protected VIN (V) (max) | 20 |
| Charger (V) | 18 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | QSOP/16 |
| Budgetary Price (See Notes) | 3.96 |
缩小
简化框图
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系[email protected]。
参量
Parametric specs for Battery Chargers
| Charging VIN (V) (max) | 20 |
| Max. ICHG (A) | 2 |
| Cell Chemistry | Li-Ion Li-Polymer NiCd NiMH |
| # NiMH/ NiCd Cells | 1 2 3 4 5 6 7 8 9 10 11 |
| # Lithium Ion Cells | 1 2 |
| Protected VIN (V) (max) | 20 |
| Charger (V) | 18 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | QSOP/16 |
| Budgetary Price (See Notes) | 3.96 |
主要特征
- Multichemistry Charger System (Li-Ion, NiMH, NiCd)
- Independent Voltage and Current Loops
- ±0.5% Internal Reference for Li-Ion Cells
- Lowers Cost:
- Stands Alone or Uses Low-Cost µC
- Built-In 1% Linear Regulator Powers µC
- Linear Regulator Provides Reference to µC ADCs
- Built-In µC Reset
- Controls Low-Cost External PNP Transistor or P-Channel MOSFET
- Space-Saving 16-Pin QSOP
- Charging-Current-Monitor Output
- < 1µA Battery Drain when Off
应用/用途
- 蜂窝电话
- 台式摇篮架充电器
- 手持式仪表(PDA、掌上电脑)
- Li+电池组
- Li+/NiMH/NiCd多化学类型电池充电器
- 笔记本电脑
描述
The MAX846A is a cost-saving multichemistry battery-charger system that comes in a space-saving 16-pin QSOP. This integrated system allows different battery chemistries (Li-Ion, NiMH or NiCd cells) to be charged using one circuit.
In its simplest application, the MAX846A is a stand-alone, current-limited float voltage source that charges Li-Ion cells. It can also be paired up with a low-cost microcontroller (µC) to build a universal charger capable of charging Li-Ion, NiMH, and NiCd cells.
An internal 0.5%-accurate reference allows safe charging of Li-Ion cells that require tight voltage accuracy. The voltage- and current-regulation loops used to control a low-cost external PNP transistor (or P-channel MOSFET) are independent of each other, allowing more flexibility in the charging algorithms.
The MAX846A has a built-in 1%, 3.3V, 20mA linear regulator capable of powering the µC and providing a reference for the µC's analog-to-digital converters. An on-board reset notifies the controller upon any unexpected loss of power. The µC can be inexpensive, since its only functions are to monitor the voltage and current and to change the charging algorithms.
In its simplest application, the MAX846A is a stand-alone, current-limited float voltage source that charges Li-Ion cells. It can also be paired up with a low-cost microcontroller (µC) to build a universal charger capable of charging Li-Ion, NiMH, and NiCd cells.
An internal 0.5%-accurate reference allows safe charging of Li-Ion cells that require tight voltage accuracy. The voltage- and current-regulation loops used to control a low-cost external PNP transistor (or P-channel MOSFET) are independent of each other, allowing more flexibility in the charging algorithms.
The MAX846A has a built-in 1%, 3.3V, 20mA linear regulator capable of powering the µC and providing a reference for the µC's analog-to-digital converters. An on-board reset notifies the controller upon any unexpected loss of power. The µC can be inexpensive, since its only functions are to monitor the voltage and current and to change the charging algorithms.
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系[email protected]。
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