參數(shù)資料
型號(hào)： ISL6292EVAL1
廠商： Intersil Corporation
英文描述： Li-ion/Li Polymer Battery Charger
中文描述： Li-ion/Li聚合物電池充電器
文件頁(yè)數(shù)： 16/19頁(yè)
文件大?。?/td> 647K
代理商： ISL6292EVAL1
16
FN9105.6
July 25, 2005
Figure 29 shows the actual captured waveforms depicted in
Figure 27 (C). The constant charge current is 750mA. A step
in the adapter voltage during the transition from CC mode to
CV mode is demonstrated.
IREF Programming Using Current-Limited Adapter
The ISL6292 has 10% tolerance for the charge current.
Typically the current-limited adapter also has 10% tolerance.
In order to guarantee proper operation, it is recommended
that the nominal charge current be programmed
at least
30% higher
than the nominal current limit of the adapter.
Board Layout Recommendations
The ISL6292 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 pads for
the 5x5 and 4x4 QFN packages are able to have 9 and 5
vias respectively. 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 ISL6292 evaluation boards
for layout examples.
FIGURE 27. THE OPERATING CURVES WITH THREE DIFFERENT CURRENT LIMITED ADAPTERS
V
PACK
Charge
Current
Power
TIME
V
IN
Const. Cur
Res
Limit
Constant Voltage
V
PACK
Charge
Current
Power
TIME
V
IN
Const. Cur
Constant Voltage
V
PACK
Charge
Current
Power
TIME
V
IN
Const. Cur
Constant Voltage
(C)
(A)
(B)
FIGURE 28. SCOPE CAPTURED WAVEFORMS SHOWING THE
THREE MODES
CC Mode
Resistance Limit Mode
CV Mode
FIGURE 29. SCOPE CAPTURED WAVEFORMS SHOWING THE
CASE THAT THE FULL-LOAD ADAPTER
VOLTAGE IS HIGHER THAN THE CRITICAL
VOLTAGE
1 hour
ISL6292
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL6292EVAL1Z 功能描述:EVAL BOARD 1 FOR ISL6292 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)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
ISL6292EVAL2 功能描述:EVALUATION BOARD 2 ISL6292 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)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
ISL6292EVAL2Z 功能描述:EVALUATION BOARD FOR ISL6292 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)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
ISL6293 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger Accepting Two Power Sources
ISL6293_06 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger Accepting Two Power Sources
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