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參數(shù)資料
| 型號(hào)： | ISL9201IRZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Li-ion Battery Charger |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, DFN-10 |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大小： | 177K |
| 代理商： | ISL9201IRZ-T |
7
FN6429.1
February 22, 2007
Applications Information
PCB Layout Guidance
The ISL9201 uses a thermally-enhanced DFN package that
has an exposed thermal pad at the bottom side of the
package. The layout should connect as much as possible to
copper on the exposed pad. Typically, the component layer
is more effective in dissipating heat. The thermal impedance
can be further reduced by using other layers of copper
connecting to the exposed pad through a thermal via array. A
minimum of four (4) such thermal vias are recommended.
Each thermal via is recommended to have 0.3mm diameter
and 0.7mm distance from other thermal vias.
Stability Consideration
The ISL9201 should behave like a current and thermal
limited linear regulator. The charger operation is stable with
an output ceramic decoupling capacitor in the range of 1μF
to 200μF, with or without a battery connected.
Input Bypass Capacitor
Due to the inductance of the power leads of the wall adapter
or USB source, the input capacitor type must be properly
selected to prevent high voltage transient during a hot-plug
event. A tantalum capacitor is a good choice for its high
ESR, providing damping to the voltage transient. Multi-layer
ceramic capacitors, however, have a very low ESR and
hence when chosen as input capacitor, a 1-
Ω
series resistor
must be used, as shown in the “Typical Applications” on
page 2, to provide adequate damping.
State Machine Diagram
The state machine diagram is shown in Figure 2. The
diagram starts with the Power-Off state. When the input
voltage rises above the POR threshold, the charger resets
itself. Then, if the charger is disabled, the charger stays in
the Charger Disabled state. If the charger is enabled, the
trickle charge starts. Anytime when V
BAT
is above the
preconditioning charge threshold voltage, the charger enters
the fast charge state. When V
BAT
reaches 4.2V, the charger
enters a constant voltage state where V
BAT
is regulated at
4.2V. When the charge current decays to the I
MIN
threshold,
the STATUS indicates an EOC condition. This condition is
latched until either the EN pin is toggled or a POR condition
has occurred at V
IN
.
TRICKLE
CHARGE
CHARGER: ON
STATUS
: ON
FAULT: OFF
FAST CHARGE
CHARGER: ON
STATUS: ON
FAULT: OFF
CHARGE
COMPLETE
CHARGER: ON
STATUS
: OFF
FAULT: OFF
V
IN
> V
POR
AND I
CHG
< I
MIN
V
BAT
DROPS
BELOW V
MIN
CHARGER
DISABLED
CHARGER
: OFF
STATUS: OFF
FAULT: OFF
ENABLED
ANYTIME
EN PIN
CHANGES TO
DISABLE
PWR OFF
CHARGER: OFF
STATUS
: OFF
FAULT: OFF
NOT
ENABLED
POR
CHARGER: OFF
STATUS
: OFF
FAULT: OFF
V
BAT
> V
MIN
V
BAT
< V
RCH
V
BAT
> V
RCH
FIGURE 2. STATE MACHINE DIAGRAM
ISL9201
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL9203 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger |
| ISL9203A | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger |
| ISL9203ACRZ | 功能描述:IC CHRGR LI-ION/LI SGL 10-DFN 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) |
| ISL9203ACRZ-T | 功能描述:IC CHRGR LI-ION/LI SGL 10-DFN 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) |
| ISL9203CRZ | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Li-ion/Li Polymer Battery Charger |
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