This user's guide provides detailed testing instructions for the BQ25190 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, BQ25190EVM, and the term evaluation module are synonymous with the BQ25190 evaluation module, unless otherwise noted.
Order the USB2ANY
This EVM has the following features:
1-A Linear battery charger
I2C Configurable Battery Regulation voltage with 0.5% Accuracy
Configurable Termination Current down to 0.5 mA
Programmable thermal charging profile with configurable Hot, Warm, Cool, and Cold thresholds
Power Path Management for powering the system and charging the battery
15-nA shutdown mode for longest shelf life
12-bit, 7-Channel ADC
Integrated Buck converter with DVS output
Integrated Buck-Boost converter with DVS output
Power Sequencing
Two integrated I2C programmable LDOs
One Button Wake-up and Reset Input with Adjustable Timers
I2C Communication control
Four GPIO lines with LED PWM driver
See the device datasheet for detailed features and operation of the integrated IC
![]() | WARNING: Hot surface! Contact may cause burns. Do not touch! Some components may reach high temperatures >55°C when the board is powered on. The user must not touch the board at any point during operation or immediately after operating, as high temperatures may be present. |
The BQ25190EVM is an evaluation kit for the BQ25190 integrated battery charge management IC. The BQ25190 is an integrated battery charge management IC that integrates the most common functions for wearable devices: linear charger, regulated output, manual reset with timer, and ship mode function.
Table 3-1 lists the jumper connections and the jumper description. Table 3-2 lists the recommended operating conditions.
Jumper Name | Description |
---|---|
J1 | VIN and GND Connector. Input voltage from external power supply. Recommended voltage is 3V - 18V |
J2 | VBAT and GND connector. |
J3 | External LDO Power Selection. The source for this external LDO can be configured to VIN, VBAT, or connected directly to another source |
J4 | USB-C Connection. Configured for 5V and 1A Source. |
J5 | SYS Rail and GND Connection. |
J6 | LSLDO1 Rail and GND Connection |
J7 | VINLS1 connection. Populate to connect VINSL1 to SYS. |
J8 | BUCK Rail and GND Connection |
J9 | /CE Pull-up to VIO. Populate to pull /CE high, leave floating to pull /CE low. |
J11 | BUCK-BOOST Rail and GND Connection |
J12 | LSLDO2 Rail and GND Connection |
J13 | Sense Line headers for voltage reading. |
J14 | VIO / VPU Rail Selector. Select between BUCK, SYS, or BUCK-Boost Rails to power VIO or VPU. Short R7 to select the External LDO. |
J15 | Battery Pack Connector. Battery connection using JST header |
J16 | VINLS2 connection. Populate to connect VINLS2 to SYS |
J22 | TS Potentiometer Connection |
J23 | ADC Input Connection. Select between a potentiometer input or Buck-Boost Rail input |
J24,J25,J26,J27 | GPIO Pull up connections. Populate to pull up GPIO voltages, leave floating to pull GPIOs low |
J28 | SYS Indicator LED. |
J29 | I2C Pull up Rail. Populate to pull up the I2C lines to VIO |
J30 | USB2ANY Connector |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
VBAT | Battery Voltage Range | 4.65 | V | ||
IIN | Input Current Range (IN to SYS) | 1.05 | A | ||
IBAT | Fast Charge Current | 1 | A | ||
RMS Discharge Current (continuously) | 1.5 | A | |||
Peak Discharge Current (Up to 50ms) | 2.5 | A | |||
VINLS1/VINLS2 | LDO1/LDO2 Input Voltage Range | 1.5 | 6 | V | |
IOUT_BUCK | Buck Output Current | 600 | mA | ||
IOUT_BUBO | Buck-boost Output Current (VSYS ≥ 3.0V, VBBOUT = 3.3V) | 600 | mA | ||
IOUT_LDO1 / IOUT_LDO2 | LDO1/LDO2 Output Current | 200 | mA | ||
TA | Operating Ambient Temperature Range | -40 | 85 | °C | |
TJ | Operating Junction Temperature Range | -40 | 125 | °C |
VIO serves as the digital pull-up rail for the EVM. Various rails can be selected as the rail intended for as the supply for this rail. J14 allows simple changing between Buck, Buck-Boost, or the SYS rail. An external LDO can be used by populating R7, though J14 should be disconnected at this point. This external LDO input rail can be selected via the J3 header.