Texas Instruments BQ25883, User Manual, Page: 2 / 25

Introduction
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2 SLUUC10 – February 2019
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BQ25883 QFN boost-mode battery charger evaluation module
Advance Information
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1 Introduction
As industry improvements continue to make portable electronics more powerful, their power requirements
increase. Using two series Li-Ion polymer cells is one way to achieve this power increase. Charging these
8.4-V battery packs from a legacy 5-V USB port requires a boost charger. The BQ25883 is a highly-
integrated 2-A boosting, 1.5-MHz switch-mode battery charge management device for a 2s Li-Ion and Li-
polymer battery. BQ25883 integrates Power Path management with I
2
C serial interface which makes the
device a truly flexible solution with charging and system settings.
1.1 EVM Features
The BQ25883 QFN evaluation module (EVM) is a complete charger module for evaluating the I
2
C-
controlled, 2s battery NVDC charger in the QFN package. Key features of this EVM include:
• Easily evaluate the high-efficiency 2-A, 1.5-MHz integrated field-effect-transistor (FET), switch-mode
boost charger in the QFN package
• Use of an onboard USB input adapter for connecting to a USB source and either communication
through D+/D– to set the default input current limit
• Use the EV2400 interface to program parameters for charge operation as well as monitor voltages and
current with an integrated analog-to-digital converter (ADC)
• Onboard test points, sense resistors, and jumpers facilitate measurement of high-efficiency- and high-
accuracy voltage and current regulation
See the device data sheet ( Table 1 ) for detailed features and operation of the integrated circuit (IC).
Table 1. Device Data Sheets
Device Data Sheet EVM Label Variant
BQ25883 SLUSDL3 BQ25883EVM-004 004
This EVM does not include the EV2400 interface board. To evaluate the EVM, order an EV2400 interface
board separately.
1.2 I/O Descriptions
Table 2 lists the jumper connections available on this EVM.
Table 2. EVM Connections
Jack Description
J1(2)–VBUS Connection for positive terminal of charger power source
J1(1)–GND Connection for negative terminal (ground terminal) of charger power source
J2(1)–SYS Connection to system load
J2(2)–GND Ground
J3(1)–PMID PMID pin connection
J3(2)–GND Ground
J4(1)–BAT+ Connection for battery pack positive node to BAT pin
J4(2)-TOP-
/BOT+
Connection for the mid connection point of the top and bottom cell (BQ25887only. Do
not use for BQ25883 or BQ25886)
J5(1)–GND Connection to battery pack negative node = EVM ground
J5(2)–TS Connection for the NTC thermistor
J6 I
2
C 4-pin connector for EV2400
J7 Input mini-USB port