Texas Instruments BQ2461X, BQ2463X EVM 1.4 1.4 Controls and Key Parameters Setting, 1.5 Recommended Operating Conditions

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Introduction

Table 1. I/O Description (continued)

Jack Description

J5–GND Ground

JP1–LOW Ground

JP1–TTC Timercapacitor pin

JP1–HI Pull-upvoltage source

JP2–HI Pull-upvoltage source

JP2–LEDPWR LEDPull-up power line

JP3–VREF ICreference voltage VREF

JP3–VPULLUP Pull-upvoltage source

JP3–EXT Externalvoltage supply from J2

JP4–VCC Pull-upvoltage source of ACDRV and BATDRV LED logic circuit

JP4–VCOM Q7and Q11 common source

JP5–HI Pull-upvoltage source

JP5–CHGEN Chargeenable

1.4 1.4 Controls and Key Parameters Setting

Table 2. Controls and Key Parameters Setting

Jack Description FactorySetting

TTCsetting

1-2: Connect TTC to GROUND (Disable termination and the safety timer)

JP1 Jumperon 2-3 (TTC and VPULLUP)

2-3: Connect TTC to VPULLUP (Allow termination, but disable the safety time)

2floating: Allow termination, CTTC sets the safety timer

Thepull-up power source supplies the LEDs when on.

JP2 JumperOn

LEDhas no power source when off.

VPULLUPsetting JumperOn 1-2 (VPULLUP and

JP3 1-2: Connect VPULLUP to VREF VREF)

2-3: Connect VPULLUP to VEXT

JP4 Thepull-up voltage source of ACDRV and BATDRV LED logic circuit. Jumperon

CHGENsetting

JP5 Jumperon: CHGEN to VPULLUP Jumper Off

Jumperoff: 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)

Supplyvoltage, VIN Input voltage from ac adapter input 5 24 28 V

(610/616/63x)

2.1(61x) 21(61x)

Batteryvoltage, VBAT Voltage applied at VBAT terminal of J5 V

1.8(63x) 18(63x)

Maximuminput current from ac adapter

Supplycurrent, IAC 0 4.5 A

input

Chargecurrent, Ichrg Battery chargecurrent 2 3 8 A

Operatingjunction 0 125 °C

temperaturerange, TJ

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.

SLUU396A–January 2010 –Revised July 2010 bq2461x/bq2463xEVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger