Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsDev KitsPCB design board

R14 R14

V = 2.1 V 1 + for bq24600/40; V = 1.8 V 1 + for bq24620

BAT BAT

R15 R15

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Introduction

Table 1. I/O description (continued)

Jack Description

JP2 – ACDRV ACDRV net

JP2 – ACDRV_IN Internal ACDRV signal

JP3 – VEXT External power supply from J4

JP3 – PULLUP Pull-up voltage source

JP3 – VREF IC reference voltage VREF

JP4 – CHGEN Charge-enable signal

JP4 – GND Ground

JP5 – LEDPWR LED Pull-up power line

JP5 – VPULLUP Pull-up voltage source from JP3

1.4 Controls and Key Parameters Setting

Table 2. Controls and Key Parameters Setting

Jack Description Factory Setting

BATDRV setting

JP1 Connect BATDRV to external signal BATDRV_EXT Connect BATDRV to BATDRV_IN

Connect BATDRV to internal signal BATDRV_IN

ACDRV setting

JP2 Connect ACDRV to external signal ACDRV_EX Connect ACDRV to ACDRV_IN

Connect ACDRV to internal signal ACDRV_IN

VPULLUP setting

JP3 1-2 : Connect VPULLUP to VREF Jumper On 1-2 (VPULLUP and VREF)

2-3 : Connect VPULLUP to VEXT

JP4 CHGEN is pulled high and the output is enabled when Jumper is on. Jumper Off

The pull-up power source supplies the LEDs when on.

JP5 Jumper On

LED has no power source when off.

Table 3. Recommended Operating Conditions

Symbol Description Min Typ Max Unit Notes

Supply voltage, V

Input voltage from ac adapter input 5 24 28 V

Battery voltage, V

BAT

Voltage applied at VBAT terminal of J5 2.1 21 26 V

Supply current, I

Maximum input current from ac adapter input 0 4.5 A

Charge current, I

chrg

Battery charge current 2 3 8 A

Operating junction

0 125 °C

temperature range, T

The bq246000/20/40 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. R14 and R15 can be

changed to regulate output.

Adjust the input voltage as required. Output set to operate at 21V (bq24600), 18V (bq24620) or 19.8V

(bq24640) from the factory.

SLUU410–February 2010 bq24600/20/40 EVM (HPA421) Multi Cell Synchronous Switch-Mode Charger

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