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Evaluation Model Overview
1 Evaluation Model Overview
1.1 Introduction
The BQ25185EVM is an evaluation kit for the BQ25185 battery charge management IC. The BQ25185 is
a resistor controlled, wide-input operating range 1-A linear battery charger with Power Path in a small QFN
package with a thermal pad. The BQ25185 integrates the most common functions for industrial and personal
electronics applications and provides ultra-low IQ, integrated protections, resistor configurability, TS monitoring,
and best thermal performance in a small solution size.
The BQ25185EVM can be evaluated using a micro-USB input and a battery with a 2-pin JST connector. The
EVM contains pin headers are provided to connect with power supplies to simulate charging operation. With
on-board potentiometers, jumpers, switches, and terminal blocks, different battery charger parameters can be
configured. For specific parameters, review the datasheet for how to configure the device.
1.2 Kit Contents
This EVM kit includes:
•
1 x BQ25185EVM
1.3 Specifications
The BQ25185 EVM has the following features:
•
1 cell battery charging with power path management
•
Up to 1A charging
•
Input voltage operating range from 3.6 V to 18 V
1.4 Device Information
This user's guide provides detailed testing instructions for the BQ25185 evaluation module (EVM). Also included
are descriptions of the necessary equipment, equipment setup, procedures, the printed-circuit board layouts,
schematics, and the bill of materials (BOM).
Throughout this user's guide, the abbreviation EVM, BQ25185EVM, and the term evaluation module are
synonymous with the BQ25185 evaluation module, unless otherwise noted.
2 Hardware
2.1 EVM Setup
Table 2-1
lists the jumper connections and the jumper description.
Jumper
Name
J1
VIN and GND connector. Input voltage from external power
supply. Recommended voltage is 5 V and OVP is 18.5 V.
Max input voltage is 25 V while in OVP.
J2
VBAT and GND connector. Battery connection using jumper
for easy access.
J3
VSYS and GND connector.
J4
/CE connector. Connects /CE pin to higer if populated. Leave
floating for low.
J5
Battery pack connector. Battery connection using JST
header.
J6
Micro-USB connector (optional for VIN)
J7
TS potentiometer connector. Connects TS potentiometer to
TS pin. Leaving this jumper will leave the TS pin open.
2
BQ25185 Evaluation Module
Table 2-1. Jumper Descriptions
Description
Copyright © 2023 Texas Instruments Incorporated
www.ti.com
Factory Setting
Not installed
Not installed
Not installed
Installed
N/A
N/A
Installed
SLUUCS1 – OCTOBER 2023
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