參數(shù)資料
型號： MAX1508
廠商： Maxim Integrated Products, Inc.
英文描述： Linear Li+ Battery Charger with Integrated Pass FET. Thermal Regulation. and ACOK-bar in 3mm x 3mm TDFN
中文描述： 線性Li+電池充電器，帶有集成調(diào)整FET、熱調(diào)節(jié)和ACOK，3mm x 3mm TDFN封裝
文件頁數(shù)： 7/11頁
文件大?。?/td> 198K
代理商： MAX1508
M
Linear Li+ Battery Charger with Integrated Pass FET,
Thermal Regulation, and
ACOK
in 3mm x 3mm TDFN
_______________________________________________________________________________________
7
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.
SHUTDOWN
CHARGER = OFF
LED = OFF
PRECHARGE
10% CHARGE CURRENT
LED = ON
(MAX1508 ONLY)
FAST CHARGE
100% CHARGER CURRENT
LED = ON
FULL BATT CONTINUES
TO REGULATE BATT
UP TO 4.2V
I
CHARGE
< 10%
OF ISET
V
BATT
> 2.5V
V
BATT
< 2.4V
V
BATT
< 2.5V
V
IN
< 7VAND
>V
V
IN
BATT
AND
V
IN
> 7V +
V
BATT
> V
IN
+
EN = HIGH
ASYNCHRONOUS FROM
ANYWHERE
V
IN
> 7V +
V
BATT
> VIN +
EN = HIGH
I
CHARGE
> 20%
OF ISET
FULL BATT
LED = OFF
Figure 2. Charge State Diagram
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX15081EVKIT+ 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
MAX15081GTL+ 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX15081GTL+T 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX15087EWL+T 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2A w/Tracking Input RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX15088EWL+T 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A w/Tracking Input RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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