ISL6298-2CR3Z データシートの表示（PDF） - Renesas Electronics
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ISL6298-2CR3Z Datasheet PDF : 17 Pages
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ISL6298
Pin Description
VIN (Pin 1, 15, 16 for 4x4; Pin 1 for 3x3)
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 conditions.
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.
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.
TOEN (Pin 6 for 4x4; N/A for 3x3)
TOEN is the TIMEOUT enable input pin. Pulling this pin to
LOW disables the TIMEOUT function. Leaving this pin HIGH or
floating enables the TIMEOUT limit. For the 3x3 DFN package,
this pin is left floating internally.
EN (Pin 7 for 4x4; Pin 6 for 3x3)
EN is the enable logic input. Connect the EN pin to LOW to
disable the charger or leave it floating to enable the charger.
V2P8 (Pin 8 for 4x4; Pin 7 for 3x3)
This is a 2.8V reference voltage output. This pin outputs a 2.8V
voltage source when the input voltage is above POR threshold
and outputs zero otherwise. The V2P8 pin can be used as an
indication for adapter presence.
IREF (Pin 9 for 4x4; Pin 8 for 3x3)
This is the programming input for the constant charging
current.
IMIN (Pin 10 for 4x4; N/A for 3x3)
IMIN is the programmable input for the end-of-charge current.
For the 3x3 DFN package, this pin is shorted to the V2P8 pin
internally.
TEMP (Pin 11 for 4x4; Pin 9 for 3x3)
TEMP is the input for an external NTC thermistor. The TEMP
pin is also used for battery removal detection.
VBAT (Pin 12, 13, 14 for 4x4; Pin 10 for 3x3)
VBAT is the connection to the battery. Typically a 10F
Tantalum capacitor is needed for stability when there is no
battery attached. When a battery is attached, only a 1F
ceramic capacitor is required.
Typical Applications
4x4 QFN Package Options
5V Wall
Adapter
1F
C1
500
R1
D1
1F
C3
500
R2
D2
VIN
TOEN
VBAT
ISL6298
FAULT
STATUS
EN
V2P8
TIME
TEMP
IREF
IMIN
GND
CTIME
15nF
1 F
C2 V2P8
RU RT
T
R IMIN
80k
RIREF
80k
Battery
Pack
FIGURE 16. TYPICAL APPLICATION CIRCUIT FOR THE 4x4 QFN PACKAGE OPTIONS
FN9173 Rev 4.00
March 9, 2006
Page 7 of 17
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