Texas Instruments BQ2461X Controls and Key Parameters Setting, Recommended Operating Conditions

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	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

1.41.4 Controls and Key Parameters Setting

Table 2. Controls and Key Parameters Setting

Jack		Description	Factory Setting
	TTC setting
JP1	1-2	: Connect TTC to GROUND (Disable termination and the safety timer)	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
JP2	The pull-up power source supplies the LEDs when on.		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.

1.5Recommended Operating Conditions

Table 3. Recommended Operating Conditions

Symbol	Description	Min	Typ	Max	Unit
				24(617)
Supply voltage, VIN	Input voltage from ac adapter input	5	24	28	V
				(610/616/63x)
Battery voltage, VBAT	Voltage applied at VBAT terminal of J5	2.1 (61x)	21 (61x)		V
		1.8 (63x)	18 (63x)
Supply current, IAC	Maximum input current from ac adapter	0		4.5	A
	input
Charge current, Ichrg	Battery charge current	2	3	8	A
Operating junction		0		125	°C
temperature range, 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/bq2463x EVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger 3

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