- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384525 > ISL6298-2CR4Z (INTERSIL CORP) Li-ion/Li-Polymer Battery Charger PDF資料下載
參數(shù)資料
| 型號： | ISL6298-2CR4Z |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Li-ion/Li-Polymer Battery Charger |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封裝： | 4 X 4 MM, LEAD FREE, PLASTIC, MO-220-VGGC, QFN-16 |
| 文件頁數(shù)： | 15/17頁 |
| 文件大?。?/td> | 445K |
| 代理商： | ISL6298-2CR4Z |
15
FN9173.3
July 20, 2005
0°C and 55°C are R
COLD
= 27.2186k
and R
HOT
= 3.535k
respectively. Using EQ. 11 and EQ. 12 result in R
S
= 360
and R
U
= 27.9k
.
Hysteresis Temperature Calculation
Using EQ. 6 is re-arranged as:
(EQ. 13)
Substituting the ratio at the hysteresis threshold results in
the NTC thermistor resistance at the threshold. Continuing
the example above, the thermistor values are found to be
20.64k
and 4.37k
respectively at the low and high
hysteresis temperatures. The corresponding temperatures
are found from the Table 3 to be 7°C and 49°C respectively.
In other words, the hysteresis temperatures for the low and
high temperature limits are approximately 7°C and 6°C
respectively.
Temperature Tolerance Calculation
The temperature accuracy is affected by the accuracy of the
thresholds, R
S
, R
U
, and the NTC thermistor. Using the
maximum ratio K, maximum possible R
U
, and minimum R
S
results in the maximum value of R
T
from EQ. 13, that is:
(EQ. 14)
From the Electrical Specification table, the maximum K is
found to be 52.3%. Assuming the resistors have 1%
accuracy, the maximum R
U
is 28.2k
and the minimum R
S
is 356
. The resultant maximum R
T
is then found to be
30.6k
and the corresponding temperature is -3°C. Hence
the temperature tolerance is 3°C. Similarly, the high
temperature maximum thermistor value is 3.98k
. Hence,
the lowest temperature is 51°C and the tolerance is 4°C.
Working with Current-Limited Adapter
The ISL6298 minimizes the thermal dissipation when
powered by a current-limited ac adapter. The thermal
dissipation can be further reduced when the adapter is
properly designed. For more information regarding working
with current-limited adapters, please refer to the ISL6292
datasheet available at http://www.intersil.com.
Board Layout Recommendations
The ISL6298 internal thermal foldback function limits the
charge current when the internal temperature reaches
approximately 100°C. In order to maximize the current
capability, it is very important that the exposed pad under the
package is properly soldered to the board and is connected
to other layers through thermal vias. More thermal vias and
more copper attached to the exposed pad usually result in
better thermal performance. On the other hand, the number
of vias is limited by the size of the pad. The exposed pad for
the 4x4 QFN package is able to have 5 vias. The 3x3 DFN
package allows 8 vias be placed in two rows. Since the pins
on the 3x3 DFN package are on only two sides, as much top
layer copper as possible should be connected to the
exposed pad to minimize the thermal impedance. Refer to
the ISL6298 evaluation boards for layout examples.
TABLE 3. RESISTANCE TABLE OF NCP15XH103F03RC
TEMP (°C)
R-Low (k
)
R-Center (k
)
R-High (k
)
-3
30.3641
31.0200
31.6869
0
26.6780
27.2186
27.7675
6
20.7560
21.1230
21.4944
7
19.9227
20.2666
20.6143
50
4.0833
4.1609
4.2395
51
4.9498
4.0262
4.1036
55
3.4634
3.5350
3.6076
R
T
K
---–
R
U
R
S
–
=
R
T MAX
K
K
MAX
–
1
-------------------------
R
U MAX
R
S MIN
–
=
ISL6298
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL6298CR4Z | Quadruple 2-Input Exclusive-OR Gates 14-SSOP -40 to 85 |
| ISL6298-2CR4Z-T | Li-ion/Li-Polymer Battery Charger |
| ISL6298CR4Z-T | Li-ion/Li-Polymer Battery Charger |
| ISL6310 | Two-Phase Buck PWM Controller with High Current Intergrated MOSFET Driver |
| ISL6310CRZ | Two-Phase Buck PWM Controller with High Current Intergrated MOSFET Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6298-2CR4Z-T | 功能描述:IC CHARGER LI-ION POLYMER 16-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| ISL6298CR4Z | 制造商:Intersil Corporation 功能描述: |
| ISL6298CR4Z-T | 制造商:Intersil Corporation 功能描述: |
| ISL6298EVAL1 | 功能描述:EVALUATION BOARD 1 ISL6298 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| ISL6298EVAL2 | 功能描述:EVALUATION BOARD 2 ISL6298 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。