ISL9208中文资料瑞萨数据手册PDF规格书

特性 Features

• Software selectable overcurrent protection levels and

variable protect detection times

- 4 discharge overcurrent thresholds

- 4 short circuit thresholds

- 4 charge overcurrent thresholds

- 8 overcurrent delay times (Charge)

- 8 overcurrent delay times (Discharge)

- 2 short circuit delay times (Discharge)

• Automatic FET turn-off and cell balance disable on reaching

external (battery) or internal (IC) temperature limit.

• Automatic override of cell balance on reaching internal

(IC) temperature limit.

• Fast short circuit pack shutdown

• Can use current sense resistor, FET rDS(ON), or Sense

FET for overcurrent detection.

• Four battery backed software controlled flags.

• Allows three different FET controls:

- Back-to-back N-Channel FETs for charge and discharge

control

- Single N-Channel discharge FET.

- Single N-Channel FET for discharge, with separate,

optional (smaller) back-to-back N-channel FETs for

charge.

• Integrated Charge/Discharge FET Drive Circuitry with

200μA (typ) turn-on current and 150mA (typ) Discharge

FET turn-off current.

• 10 Accurate 3.3V voltage regulator (minimum 25mA out

with external NPN transistor having current gain of 70).

• Monitored cell voltage output stable in 100μs.

• Internal Cell balancing FETs handle up to 200mA of

balancing current for each cell (with the number of cells

being balanced limited by the maximum package power

dissipation of 400mW).

• Simple I2

C host interface

• Sleep operation with programmable negative edge or

positive edge wake-up.

• <10μA Sleep Mode

• Pb-free (RoHS compliant)