LTM4719 datasheet(34/53 Pages) AD

34 / 53 page

Data Sheet

LTM4719

analog.com

Rev. 0

34 of 53

Table 10. Read/Write Register B (Address 02h)

BIT

NAME

OPERATION

DEFAULT

B[15:0]

Accumulated charge

Readback 16MSBs of counter data, only 8MSBs B[15:8]

are writable.

0000h

Table 11. Read Register C (Address 03h)

BIT

NAME

OPERATION

DEFAULT

C[0]

Coulomb counter overflow

Coulomb counter operating fault due to an improperly

chosen prescaler causing the ripple counter to

overflow.

C[1]

Alarm trip

Accumulator Register B value has met or exceeded the

alarm threshold set in Register A.

C[2]

Alarm minimum die

temperature

The die temperature has reached the minimum die

temperature set with bits H[7:0].

C[3]

Alarm maximum die

temperature

The die temperature has reached the maximum die

temperature set with bits H[15:8].

C[4]

ADC measurements ready

Indicates when the ADC measurements are ready after

a read request with the coulomb counter turned off

(Bit A[7] = 1 and Bit A[6] = 1) after this bit is read

through I2C, it self-resets.

C[7:5]

Pin-strapped IPK pin

Readback of IPK[2:0] pins (setting latched at startup).

000

C[15:8]

DIE_TEMP

Readback 8MSBs of die temperature measurement.

00h

The die temperature DIE_TEMP can be calculated by Equation 10.

�� = �� × �� − 41℃

(10)

where TLSB is the typical value in the Electrical Characteristics table and COUNTC are the 8MSBs of Register C.

Table 12. Read Register D (Address 04h)

BIT

NAME

OPERATION

DEFAULT

D[11:0]

VINC(ON)

Readback VINC pin voltage measurement when IPEAK turns on.

000000

D[15:12]

Not used.

0000

The battery voltage VINC(ON) can be obtained from the count in Register D (COUNTD) by Equation 11.

��(��) = �� × ��

(11)

where VLSB is the typical value in the Electrical Characteristics table.

LTM4719 Datasheet(PDF) 34 Page - Analog Devices

LTM4719 Datasheet(HTML) 34 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

Datasheet Download

Link URL