AB18X5-RTC datasheet(21/37 Pages) ABRACON

21 / 37 page

AB18X5 Real-Time Clock with Power

Management Family

Date of Issue: October 16, 2014

3.0 x 3.0 mm

Page 21 of 37

Abracon Drawing #453568

Revision: C

5.6 VBAT Supply Current

Table 9 lists the current supplied into the VBAT power input under various conditions.

Figure 12 shows the typical VBAT power state operating current vs. temperature in XT mode.

Figure 12. Typical VBAT Current vs. Temperature in XT Mode

 For Table 9, T

A = -40 °C to 85 °C, TYP values at 25 °C, MAX values at 85 °C, VBAT Power state.

Table 9: VBAT Supply Current

SYMBOL

PARAMETER

TEST CONDITIONS

VCC

VBAT

MIN

TYP

MAX

UNIT

IVBAT:XT

VBAT supply current in

XT oscillator mode

Time keeping mode with

XT oscillator running(1)

< VCCSWF

3.0V

330

1.8V

290

IVBAT:RC

VBAT supply current in

RC oscillator mode

Time keeping mode with

only the RC oscillator run-

ning (XT oscillator is off)(1)

< VCCSWF

3.0V

220

1.8V

170

IVBAT:ACAL

Average

VBAT

supply

current in Autocalibrated

RC oscillator mode

Time keeping mode with

the RC oscillator running.

Autocalibration

enabled.

ACP = 512 seconds(1)

< VCCSWF

3.0V

235

1.8V

190

IVBAT:VCC

VBAT supply current in

VCC powered mode

VCC powered mode(1)

1.7 - 3.6 V

3.0V

-5

0.6

1.8V

-10

0.5

(1) Test conditions: All inputs and outputs are at 0 V or VCC.

100

110

120

130

‐40

‐30

‐20

‐10

304050607080

Temperature (°C)

VBAT = 1.8V

VBAT = 3.0V

TA = 25 °C

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