Texas Instruments BQ2461X - Manual (Page 3)

www.ti.com Introduction
Table 1. I/O Description (continued)
Jack Description
J5–GND Ground
JP1–LOW Ground
JP1–TTC Timer capacitor pin
JP1–HI Pull-up voltage source
JP2–HI Pull-up voltage source
JP2–LEDPWR LED Pull-up power line
JP3–VREF IC reference voltage VREF
JP3–VPULLUP Pull-up voltage source
JP3–EXT External voltage supply from J2
JP4–VCC Pull-up voltage source of ACDRV and BATDRV LED logic circuit
JP4–VCOM Q7 and Q11 common source
JP5–HI Pull-up voltage source
JP5–CHGEN Charge enable
1.4 1.4 Controls and Key Parameters Setting
Table 2. Controls and Key Parameters Setting
Jack Description Factory Setting
TTC setting
1-2 : Connect TTC to GROUND (Disable termination and the safety timer)
JP1 Jumper on 2-3 (TTC and VPULLUP)
2-3 : Connect TTC to VPULLUP (Allow termination, but disable the safety time)
2 floating: Allow termination, CTTC sets the safety timer
The pull-up power source supplies the LEDs when on.
JP2 Jumper On
LED has no power source when off.
VPULLUP setting
Jumper On 1-2 (VPULLUP and
JP3 1-2 : Connect VPULLUP to VREF
VREF)
2-3 : Connect VPULLUP to VEXT
JP4 The pull-up voltage source of ACDRV and BATDRV LED logic circuit. Jumper on
CHGEN setting
JP5 Jumper on: CHGEN to VPULLUP Jumper Off
Jumper off: CHGEN is set to low by pull down resistor.
1.5 Recommended Operating Conditions
Table 3. Recommended Operating Conditions
Symbol Description Min Typ Max Unit
24(617)
Supply voltage, V
IN
Input voltage from ac adapter input 5 24 28 V
(610/616/63x)
2.1 (61x) 21 (61x)
Battery voltage, V
BAT
Voltage applied at VBAT terminal of J5 V
1.8 (63x) 18 (63x)
Maximum input current from ac adapter
Supply current, I
AC
0 4.5 A
input
Charge current, I
chrg
Battery charge current 2 3 8 A
Operating junction
0 125 °C
temperature range, T
J
The bq2461x/bq2463x EVM board requires a regulated supply approximately 0.5 V minimum above the
regulated voltage of the battery pack to a maximum input voltage of 28 VDC.
3 SLUU396A – January 2010 – Revised July 2010 bq2461x/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger
Copyright © 2010, Texas Instruments Incorporated