ISL6292_06 Datasheet, PDF (8/20 Pages) Intersil Corporation – Li-ion/Li Polymer Battery Charger

ISL6292
Pin Description
VIN (Pin 1, 15, 16 for 4x4, 5x5; 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, 5x5; N/A for 3x3)
TOEN is the TIMEOUT enable input pin. Pulling this pin to
LOW disables the TIMEOUT charge-time limit for the fast
charge modes. Leaving this pin HIGH or floating enables the
TIMEOUT limit.
EN (Pin 7 for 4x4, 5x5; 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, 5x5; 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, 5x5; Pin 8 for 3x3)
This is the programming input for the constant charging
current.
IMIN (Pin 10 for 4x4, 5x5; N/A for 3x3)
IMIN is the programmable input for the end-of-charge
current.
TEMP (Pin 11 for 4x4, 5x5; 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, 5x5; Pin 10 for 3x3)
VBAT is the connection to the battery. Typically a 10μF
Tantalum capacitor is needed for stability when there is no
battery attached. When a battery is attached, only a 0.1μF
ceramic capacitor is required.
Typical Applications
Typical Application Circuit For 4x4 or 5x5 QFN Package Options
5V Wall
Adapter
1μF
C₁
VIN
VBAT
1k Ω
R₁
D₁
1μF
C₃
1k Ω
R₂
D₂
TOEN
ISL6292
FAULT
STATUS
EN
V2P8
TIME
TEMP
IREF
IMIN
GND
C _TIME
15nF
1μ F
C₂ ^V2P8
R_{U RT}
T
R _IMIN
80kΩ
R _IREF
80kΩ
Battery
Pack
8
FN9105.8
November 14, 2006