ISL9205, ISL9205A, ISL9205B, ISL9205C, ISL9205D

FN9252 Rev 4.00

Page 3 of 17

Dec 20, 2018

Pin Configurations

ISL9205

(16 LD QFN)

TOP VIEW

ISL9205A, ISL9205B, ISL9205C

(10 LD DFN)

TOP VIEW

ISL9205D

(10 LD DFN)

TOP VIEW

1

2

3

4

VSEN

TEMP

IMIN

IREF

VIN

FAULT

STATUS

TIME

9

10

11

12

1

2

3

4

5

10

9

8

7

6

VBAT

VSEN

IREF

V2P8

EN

VIN

FAULT

STATUS

TIME

GND

1

2

3

4

5

10

9

8

7

6

VBAT

TEMP

IREF

V2P8

EN

VIN

FAULT

STATUS

TIME

GND

Pin Descriptions

PIN

NAME ISL9205

ISL9205A,

ISL9205B,

ISL9205C ISL9205D

DESCRIPTION

VIN

1, 15,

16

1

1

Input power source. Connect to a wall adapter.

FAULT

2

2

2

Open-drain output indicating fault status. This pin is pulled to LOW under any fault condition. When a fault

condition occurs, the time counter resets. When the charger is disabled, the FAULT pin outputs high

impedance.

STATUS

3

3

3

Open-drain output indicating charging and inhibit states. This pin is pulled LOW when the charger is charging

a battery. It turns into high impedance when the charge current drops to IMIN. This high impedance state is

latched until a recharge cycle or a new charge cycle starts. When the charger is disabled, the STATUS pin

outputs high impedance.

TIME

4

4

4

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

5

5

5

Connection to system ground.

TOEN

6

-

-

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. There is an internal 400kΩ pull-up

resistor at this pin.

EN

7

6

6

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 400kΩ pull-up resistor at this pin.

V2P8

8

7

7

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.