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参数资料
| 型号： | MAX8672ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/17页 |
| 文件大小： | 0K |
| 描述： | IC MANAGE NIMH BACKUP 14-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 备份管理 |
| 电池化学： | 镍金属氢化物 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
Complete Backup Management
IC for NiMH Batteries
Charger
The MAX8672 charger is a comparator-controlled cur-
rent source with both current and voltage limits pro-
grammed by external resistors. Typical charge profiles
for a 1-cell NiMH battery are shown in Figure 2 and
explained below.
When power is applied at IN and BST, the MAX8672
charges the battery at the standard charge current pro-
grammed by a resistor connected between CHGI and
GND. The MAX8672 remains in standard charge until the
charge timer (programmed by C CT ) times out, the battery
rises to the V BATT(CHG) limit, or the charge is interrupted
by a temperature-range violation. If standard charge is
terminated by the charge timer, trickle charge mode
begins and continues without timing until the V BATT(CHG)
CHARGE
limit is achieved. Once standard charge or trickle charge
is terminated by the V BATT(CHG) limit, charging ceases.
Subsequently, if V BATT falls to the V BATT(TRK) threshold,
trickle charge is activated. V BATT then rises and the
charging cycle continues. The charger does not enter
standard charge again until the battery falls to the
V BATT(RSTRT) threshold. When the V BATT(RSTRT) thresh-
old is reached, standard charge begins and the charge
timer is reset.
Standard charge is also interrupted if the external ther-
mistor temperature sensed at THRM is out of range.
When THRM senses a too-hot or too-cold condition dur-
ing standard charge, the timer pauses and the charger
enters trickle charge.
TIMER
EXPIRES
NO
CHARGE
1.5V
V BATT(CHG)
NO
1.225V
V BATT(RSTRT)
STANDARD
CHARGE
1.41V
V BATT(TRK)
1.5V
TRICKLE
NO
CHARGE
CHARGE
V BATT(CHG)
NO
TRICKLE
1.41V
V BATT(TRK)
TRICKLE
CHARGE
STANDARD
CHARGE
1.225V
V BATT(RSTRT)
Figure 2. Typical Charge-Current Profiles for 1-Cell Battery
_______________________________________________________________________________________
9
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相关代理商/技术参数 |
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|---|---|
| MAX8672EVKIT+ | 制造商:Maxim Integrated Products 功能描述:MAX8672 EVAL KIT - Rail/Tube |
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| MAX8676ELB+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8676EWJ+T | 制造商:Maxim from Components Direct 功能描述:THE MAXIM MAX8676EWJ+T IS A USB HOT SWAP CONTROLLER. - Tape and Reel 制造商:Maxim 功能描述:The Maxim MAX8676EWJ+T is a USB Hot Swap Controller. |
| MAX8677AETG+ | 功能描述:电池管理 1.5A Dual USB/AC Adapter Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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