Texas Instruments BQ24083 Evaluation Module BQ24083EVM BQ24083EVM Scheda Tecnica
Codici prodotto
BQ24083EVM
1
Introduction
1.1
Background
1.2
Performance Specification Summary
2
Test Summary
2.1
Test Setup
User's Guide
SLUU315 – June 2008
bq24083 1-A, Single-Cell Li-Ion and Li-Polymer Charge
Management IC EVM
This user's guide describes the bq24083 evaluation module (EVM). The EVM provides a convenient
method for evaluating the performance of a charge management solution for portable applications. A
complete designed and tested charger is presented. The charger is designed to deliver up to 1 A of
continuous charge current for single-cell Li-ion or Li-polymer applications using a dc power supply. The
charger is programmed from the factory to deliver 0.7 A of charging current.
method for evaluating the performance of a charge management solution for portable applications. A
complete designed and tested charger is presented. The charger is designed to deliver up to 1 A of
continuous charge current for single-cell Li-ion or Li-polymer applications using a dc power supply. The
charger is programmed from the factory to deliver 0.7 A of charging current.
The bq24083 is a highly integrated and flexible Li-ion linear charge and system power management
device targeted at space-limited charger applications. The bq24083 integrated circuit (IC) offers an
integrated power FET and current sensor, high-accuracy current and voltage regulation, charge status,
and charge termination in a single monolithic device. An external resistor sets the magnitude of the charge
current. The bq24083 charges the battery in three phases: conditioning, constant current, and constant
voltage. The constant voltage can be programmed to 4.2 V without pullup on VBSEL and 4.1 V with a
pullup (JMP5). Charge is terminated based on minimum current. An internal charge timer provides a
backup safety for charge termination. The bq24083 automatically restarts the charge if the battery voltage
falls below an internal threshold. The bq24083 automatically enters sleep mode when the input is
removed.
device targeted at space-limited charger applications. The bq24083 integrated circuit (IC) offers an
integrated power FET and current sensor, high-accuracy current and voltage regulation, charge status,
and charge termination in a single monolithic device. An external resistor sets the magnitude of the charge
current. The bq24083 charges the battery in three phases: conditioning, constant current, and constant
voltage. The constant voltage can be programmed to 4.2 V without pullup on VBSEL and 4.1 V with a
pullup (JMP5). Charge is terminated based on minimum current. An internal charge timer provides a
backup safety for charge termination. The bq24083 automatically restarts the charge if the battery voltage
falls below an internal threshold. The bq24083 automatically enters sleep mode when the input is
removed.
Table 1. Performance Specification Summary
SPECIFICATION
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input dc voltage, V
I(DC)
V
(REG)
+ 0.5
5
6.5
V
Battery charge current, I
O(CHG)
0.7
1
A
Power dissipation
1.5
W
This section shows the test setups used and the tests performed in evaluating the EVM. See the bq24083
data sheet (
data sheet (
) for complete details regarding the operation and specifications.
The bq24083EVM board requires a regulated 5-Vdc, 1-A power source to provide input power and a
single-cell Li-ion or Li-polymer battery pack.
single-cell Li-ion or Li-polymer battery pack.
The test setup connections and jumper setting selections are configured for a stand-alone evaluation but
can be changed to interface with external hardware such as a microcontroller.
can be changed to interface with external hardware such as a microcontroller.
SLUU315 – June 2008
bq24083 1-A, Single-Cell Li-Ion and Li-Polymer Charge Management IC EVM
1