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參數(shù)資料
| 型號(hào)： | MAX1508ZETA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Circular Connector; No. of Contacts:13; Series:TVS06; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:11; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:11-35 |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO8 |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDFN-8 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大小： | 198K |
| 代理商： | MAX1508ZETA |
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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| MAX1508ZETA+ | 制造商:Maxim Integrated Products 功能描述:CHRGR LI-ION 800MA 4.2V 8TDFN EP - Rail/Tube |
| MAX1508ZETA+T | 功能描述:電池管理 Linear Li+ Battery Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX1508ZETA-T | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX15090AEVKIT# | 功能描述:電源管理IC開發(fā)工具 MAX15090 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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