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參數(shù)資料
| 型號： | ISL9205DIRZ |
| 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 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 263K |
| 代理商： | ISL9205DIRZ |
3
FN9252.0
March 20, 2007
Pin Description
VIN (Pin 1)
VIN is the input power source. Connect to a wall adapter.
FAULT (Pin 2)
FAULT is an open-drain output indicating fault status. This
pin is pulled to LOW under any fault condition. When a fault
condition occurs, the time counter will be reset. When the
charger is disabled, the FAULT pin outputs high impedance.
STATUS (Pin 3)
STATUS is an open-drain output indicating charging and
inhibit states. The STATUS pin is pulled LOW when the
charger is charging a battery. It will be turned into high
impedance when the charge current drops to IMIN. This high
impedance state will be latched until a recharge cycle or a
new charge cycle starts. When the charger is disabled, the
STATUS pin outputs high impedance.
TIME (Pin 4)
The TIME pin determines the oscillation period by
connecting a timing capacitor between this pin and GND.
The oscillator also provides a time reference for the charger.
GND (Pin 5)
GND is the connection to system ground.
EN (Pin 6)
EN is the enable logic input. Connect the EN pin to LOW to
disable the charger or leave it floating to enable the charger.
There is an internal 400k
Ω
pull-up resistor at this pin.
V2P8 (Pin 7)
This is a 2.8V reference voltage output. This pin provides a
2.8V voltage source when the input voltage is above the
POR threshold and outputs zero otherwise. The V2P8 pin
can be used as an indication for adapter presence.
IREF
(Pin 8)
This is the charge current programming and monitoring pin.
Connect a resistor between this pin and GND to set the
charge current during the constant current phase, as given
by Equation 1:
Where R
IREF
is in k
Ω
.
TEMP (Pin 9 for ISL9205D; N/A for ISL9205A,
ISL9205B, and ISL9205C)
TEMP is the input for an external NTC thermistor. The TEMP
pin is also used for battery removal detection.
VSEN (Pin 9 for ISL9205A,ISL9205B, and
ISL9205C; N/A for ISL9205D)
VSEN is the remote voltage sense pin. Connect this pin as
close to the battery positive terminal as possible. If the
VSEN pin is left floating, its voltage drops to 0V and the
charger operates in trickle mode.
VBAT (Pin 10)
VBAT is the connection to the battery. Typically a 10
μ
F
Tantalum capacitor is needed for stability when there is no
battery attached. When a battery is attached, only a 0.1
μ
F
ceramic capacitor is required.
I
REF
IREF
-----------------
A
( )
=
(EQ. 1)
ISL9205
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