Datasheet

1.2 General Description
1.3 I/O Description
1.4 Controls and Key Parameters Setting
1.5 Recommended Operating Conditions
Introduction www.ti.com
The bq2430x/1x/8x evaluation module is a complete charger module for evaluating a charger front-end
protection and charger solution using the bq2430x/1x/8x and bq24080 devices. It is designed to deliver up
to 200 mA (bq2430x) or 700 mA (bq2431x/8x) of charge current to Li-ion or Li-polymer applications. The
charger front-end protection current is designed to 300 mA (bq2430x) or 1000 mA (bq2431x) or no limit
(bq2438x).
The bq2430x/1x8x protects the charging system against three types of failures: input overvoltage when
the AC adapter fails to regulate its voltage; load overcurrent when failures such as a short-circuit occurs in
the charging system; and battery overcharge.
In addition, bq2430x provide a PFET gate drive signal to an external PFET for input reverse-polarity
protection.
For details, see the relevant bq2430x/1x/8x data sheet.
Jack Description
J1-DC+ AC adapter, positive output
J1-DC– AC adapter, negative output, ground
J2-OUT CFE OUT pin
J2-DC– CFE VSS pin, ground
J2-BAT+ Connect to battery positive output
J2- FAULT CFE FAULT pin
J3-CHGIN bq24080 IN pin, connect to external power supply positive output
J3-DC– bq24080 VSS pin, ground
J4-BAT+ Connect to battery positive output
J4-BAT– Connect to battery negative output, ground
Jack Description Factory Setting
JMP1 CFE input voltage is indicated by LED. Jumper On
JMP2 CFE output voltage is indicated by LED. Jumper On
JMP3 CFE CE pin is connected to 5 V. Jumper On
JMP4 bq24080 STAT1 pin is indicated by LED. Jumper On
JMP5 bq24080 STAT2 pin is indicated by LED. Jumper On
JMP6 bq24080 PG pin is indicated by LED Jumper On
JMP7 bq24080 CE pin is connected to 5 V. Jumper On
JMP8 CFE OUT pin is connected to bq24080 IN pin. Jumper Off
Symbol Description Min Typ Max Unit Notes
Supply voltage, V
IN
Input voltage from ac adapter input 4.5 5 26 V
Battery voltage, V
BAT
Voltage applied at VBAT terminal of J4 0 3-4.2 5 V
Supply current, I
AC
Maximum input current from ac adapter 0 1.5 A
input
Charge current, I
chrg
Battery charge current 0.02–0.07 0.2–0.7 1 A
Operating junction 0 125 ° C
temperature range, T
J
bq2430x/1x/8x DSG EVM (HPA245) for Li+ Charger Front-End Protection IC2 SLUU291A – August 2007 – Revised April 2008
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