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EVM Hardware and Software Setup

3.3 bq27531 Circuit Module Performance Specification Summary

This section summarizes the performance specifications of the bq27531 circuit module.

3.4 Recommended Operating Conditions

Min Typ Max Unit

Supply voltage, V

Input voltage from ac adapter 4.2 6 V

System voltage, V

SYS

Voltage output at SYS terminal (depends on VBAT voltage 3.3 VBATR V

and status of V

INDPM

and input current limit circuits) EG+4.17

Battery voltage, V

BAT

Voltage output at VBAT terminal (registers set via bq27531 3 4.2 4.44 V

software)

Supply current, I

IN(MAX)

Maximum input current from ac adapter input (registers set 1.5 3 A

via bq27531 software)

Fast charge current, Battery charge current (registers set via bq27531 software) 0.550 3 A

CHRG(MAX)

Operating junction temperature range, T

-40 125 °C

4 EVM Hardware and Software Setup

This section describes how to connect the different components of the EVM how to install the

bq27531EVM PC software and.

4.1 Recommended Test Equipment

4.1.1 Power Supplies

1. Power Supply #1 (PS #1) capable of supplying 6 V at 3 A is required.

2. If not using a battery as the load, then power supply #2 (PS #2) capable of supplying up to 5 V at 5 A

is required to power the circuit shown in Figure 7.

4.1.2 Load #1 Between BAT and GND

Testing with an actual battery is the best way to verify operation in the system. If a battery is not available,

then a circuit similar to the one shown in Figure 7 can simulate a battery when connected to a power

supply.

Figure 7. BAT_Load (PR1010) Schematic

SLUUA90–April 2013 bq27531EVM with bq27531 Battery Management Unit Impedance Track™

Fuel Gauge and bq24192 4.5-A, Switch-Mode Battery Charger for Single-Cell

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