ISL6292C Datasheet, PDF (3/11 Pages) Intersil Corporation – Li-ion/Li Polymer Battery Charger

ISL6292C
Electrical Specifications
Typical values are tested at VIN = 5V and 25°C Ambient Temperature, maximum and minimum values are
guaranteed over 0°C to 70°C Ambient Temperature with a supply voltage in the range of 4.3V to 6.5V, unless
otherwise noted. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
OSCILLATOR
Oscillation Period
LOGIC OUTPUTS
T_OSC
C_TIME = 15nF
2.4
3.0
3.6
ms
STATUS/FAULT Sink Current
Pin Voltage = 0.8V
5
-
-
mA
NOTES:
3. The actual charge current may be affected by the thermal foldback function if the thermal dissipation capability is not enough or by the on
resistance of the power MOSFET if the charger input voltage is too close to the output voltage.
4. Guaranteed by design, not a tested parameter.
Pin Descriptions
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 conditions. Any time a
FAULT condition happens, it will reset the counter of the
charger.
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 forced to high
impedance when the charge current drops to I_MIN. This high
impedance mode will be latched until a recharge cycle or a
new charge cycle starts.
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.
V2P8 (Pin 7)
This is a 2.8V reference voltage output. This pin outputs a
2.8V voltage source when the input voltage is above POR
threshold, otherwise it outputs zero. The V2P8 pin can be
used as an indication for adapter presence.
IREF (Pin 8)
This is the programming input for the constant charging
current. It maintains at 0.8V when the charger is in normal
operation.
VSEN (Pin 9)
VSEN is the remote voltage sense pin. Connect this pin as
close as possible to the battery pack positive connection. If
the VSEN pin is floating, its voltage drops to zero volt and
the charger operates in the Trickle mode.
VBAT (Pin 10)
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.
3
FN9133.2
July 22, 2005