ISL9205, ISL9205A, ISL9205B, ISL9205C, ISL9205D

FN9252 Rev 4.00

Page 4 of 17

Dec 20, 2018

IREF

9

8

8

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 RIREF is in kΩ.

TEMP

11

-

9

Input for an external NTC thermistor. The TEMP pin is also used for battery removal detection.

IMIN

10

-

-

End-of-Charge (EOC) current programming pin. Connect a resistor between this pin and GND to set the EOC

current, as given by Equation 2:

where RIMIN is in kΩ.

VSEN

12

9

-

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 zero volt and the charger operates in Trickle mode.

VBAT

13, 14

10

10

Connection to the battery. Typically a ceramic capacitor of minimum 1µF is needed for stability when there

is no battery attached. When a battery is attached, only a 0.1µF ceramic capacitor is required.

Pin Descriptions (Continued)

PIN

NAME ISL9205

ISL9205A,

ISL9205B,

ISL9205C ISL9205D

DESCRIPTION

IREF

80

RIREF

-----------------

A



=

(EQ. 1)

IMIN

8000

RIMIN

----------------

mA



=

(EQ. 2)