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参数资料
| 型号： | MAX1508ETA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/11页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR LI+ 1CELL 8TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.25 V ~ 13 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MAX1508ETA+TDKR |
Linear Li+ Battery Charger with Integrated Pass FET,
Thermal Regulation, and ACOK in 3mm x 3mm TDFN
ASYNCHRONOUS FROM
ANYWHERE
V IN > 7V +
V BATT > VIN +
EN = HIGH
SHUTDOWN
AN ND
T A
7V
V IN > V BAT
V IN = LO
V BATT < 2.5V
PRECHARGE
10% CHARGE CURRENT
<
EN
D
W
CHARGER = OFF
LED = OFF
V IN > 7V +
V BATT > V IN +
EN = HIGH
LED = ON
(MAX1508 ONLY)
V BATT < 2.4V
V BATT > 2.5V
FAST CHARGE
100% CHARGER CURRENT
LED = ON
I CHARGE > 20%
OF ISET
Figure 2. Charge State Diagram
FULL BATT
LED = OFF
I CHARGE < 10%
OF ISET
FULL BATT CONTINUES
TO REGULATE BATT
UP TO 4.2V
Applications Information
Charge-Current Selection
The maximum charging current is programmed by an
external R ISET resistor connected from ISET to GND.
Select the R ISET value based on the following formula:
I FAST = 1461V / R ISET ?
where I FAST is in amps and R ISET is in ohms. ISET can
also be used to monitor the fast-charge current level.
The output current from the ISET pin is 0.958mA per
amp of charging current. The output voltage at ISET is
proportional to the charging current as follows:
V ISET = (I CHG x R ISET ) / 1044
The voltage at ISET is nominally 1.4V at the selected
fast-charge current, and falls with charging current as
the cell becomes fully charged.
Thermal Regulation
The MAX1508 features a proprietary thermal-regulation
circuit to protect both the IC and the system from
excessive heat. When the MAX1508’s die temperature
reaches +100°C, the charge current is reduced to pre-
vent any additional increase in the die temperature. An
active thermal loop does not indicate a fault condition.
Thermal regulation allows the MAX1508 to provide con-
tinuous charge to the battery under adverse conditions
without causing excessive power dissipation.
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1508YETA | 制造商:Maxim Integrated Products 功能描述:LINEAR LI+ BATT CHARGR W INTEGRATD - Rail/Tube |
| MAX1508YETA+ | 制造商:Maxim Integrated Products 功能描述:CHRGR LI-ION 800MA 4.2V 8TDFN EP - Rail/Tube |
| MAX1508YETA+T | 功能描述:电池管理 Linear Li+ Battery 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 |
| MAX1508YETA-T | 功能描述:电池管理 Linear Li+ Battery 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 |
| MAX1508ZETA | 制造商:Maxim Integrated Products 功能描述:LINEAR LI+ BATT CHARGR W INTEGRATD - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
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