DS2781E+ Maxim Integrated Products, DS2781E+ Datasheet - Page 18

• Manufacturer Part Number: DS2781E+
• Description: IC FUEL GAUGE BATT 8TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of DS2781E+

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2.5 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP
• Operating Supply Voltage: 2.5 V to 10 V
• Supply Current: 70 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: No
• Mounting Style: SMD/SMT
• Temperature Monitoring: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Remaining Active Relative Capacity (RARC) [%]: RARC reports the capacity available under the current
temperature conditions at the Active Empty discharge rate (IAE) to the Active Empty point in relative units of
percent. RARC is 8 bits. See Figure 16.
Figure 16. Remaining Active Relative Capacity Register Format
Remaining Standby Relative Capacity (RSRC) [%]: RSRC reports the capacity available under the current
temperature conditions at the Standby Empty discharge rate (ISE) to the Standby Empty point capacity in relative
units of percent. RSRC is 8 bits. See Figure 17.
Figure 17. Remaining Standby Relative Capacity Register Format
Calculation of Results
RAAC [mAh] = (ACR[mVh] - AE(T) * FULL40[mVh]) * RSNSP [mhos]
RSAC [mAh] = (ACR[mVh] - SE(T) * FULL40[mVh]) * RSNSP [mhos]
RARC [%] = 100% * (ACR[mVh] - AE(T) * FULL40[mVh]) /
RSRC [%] = 100%* (ACR[mVh] - SE(T) * FULL40[mVh]) /
RARC
RSRC
MSb
MSb
2
2
7
7
2
2
6
6
{(AS * FULL(T) - AE(T)) * FULL40[mVh]}
{(AS * FULL(T) - SE(T)) * FULL40[mVh]}
2
2
5
5
18 of 31
Address 06h
Address 07h
2
2
4
4
Units:
Units:
2
2
3
3
2
2
2
2
Read Only
Read Only
2
2
1
1
LSb
LSb
1%
1%
2
2
0
0