QUICK START GUIDE FOR DEMONSTRATION CIRCUIT DC1259A

BATTERY BACKUP MANAGER BOARD

2

Table 1.Performance Summary

Parameter

Conditions/Notes

Value

DCIN Input Voltage Range

19V Abs Max.

12V± 5%

DCIN Trip voltage (Falling)

10.2V± 2.5%

DCIN Trip voltage (Rising)

11.2V± 2.5%

DCIN Hysteresis (Rising)

Set by R73. C29 used as a low pass filter for noise rejection.

+1V

DCIN minimum Current for Chg Only

1.4A

DCIN Minimum Current

Current needed for charge and calibration test.

3.1 A

Maximum Load Current

VSYS + DCOUT

7A

Minimum Load Current for Calibration

VSYS + DCOUT Load current > 0.65A (DCIN min) + 1A Cal Current.

1.7A

Battery Chemistry Select/Type

Preset for Smart Li-ion per JP2

Smart Li-ion

Battery Charge Voltage

Preset for 3 cells per JP3: Vchg = GND

12.6V±0.5%

Battery Charge Current

Full-scale Current as set by Ichg and R4

1A± 3.3%

Battery Discharge Cutoff Voltage

Set by Vdis pin. 2.9V/Cell.

8.7V± 2%

Calibration Discharge Cutoff Voltage

Set by Vcal pin. 2.9V/Cell.

8.7V± 2%

Calibration Discharge Current

Full-Scale Current as set by Ical and R4

1A ± 3.3%

Calibration DCIN Min load current Shdn

Cal Fault Min DCIN Current Shutdown. (Detected by R1)

0.5A ± 30%

Calibration DCIN OVP Shutdown Rising

Cal Fault OVP Shutdown voltage. (Detected by DCDIV)

13.2V

SMBus Address

Smart Battery Default. Adjustable.

12h

Power Up GPIO Mode

Preset per JP4

Status

SMBus voltage (internal)

Removing R62 allows external power of VSMBUS terminal.

3.3V

ACPb Delay on power up.

Delay in ACPb being asserted after DCDIV detection. Set by C18.

21ms

Max Bulk Charge Time allowed.

Set by Vref load current and C17. See datasheet.

6.7Hours

NTC/Battery Detection

Set per JP1 to detect the presence of a Smart Battery when plugged in.

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