DS2790G+T&R Maxim Integrated Products, DS2790G+T&R Datasheet - Page 38

• Manufacturer Part Number: DS2790G+T&R
• Description: IC FUEL GAUGE BATT 28-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS2790G+T&R

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TDFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Address
Field
Unused
UVT
TLIME
TLIM
OVT
001Fh
15:13
12:8
6:5
4:0
Bit
7
Format
R/W
R/W
R/W
R/W
R/W
Bit Definition
Allowable Values
Undefined – General purpose
Undervoltage Threshold
The Undervoltage threshold ranges from 2.30V to 2.90V and is
calculated by the equation:
Valid only if Trim Key = 76h
Default = 17h (2.45V)
Temperature Limit Enable
0 = Disables Lithium-Ion protection based on temperature.
1 = Enables temperature protection defined by TLIM[1:0] bits.
Valid only if Trim Key = 76h
Default = 0
Temperature Limit Thresholds
0 0 = -3ºC
0 1 = -3ºC
1 0 = -23ºC
1 1 = -43ºC
Valid only if Trim Key = 76h and TLIME = 1
Default = 0 0
Overvoltage Threshold
The Overvoltage threshold ranges from 4.25V to 4.55V and is
calculated by the equation:
The enable threshold V
Valid only if Trim Key = 76h
Default = 0Ah (4.35V)
38 of 41
T
CL
V
V
OV
UV
53ºC
58ºC
73ºC
88ºC
T
= 4.25V + 0.00977V × OVT[4:0]
= 2.90V – 0.0195V × UVT[4:0]
CH
CE
is always fixed at 0.1V below V
-23ºC
-23ºC
-23ºC
-43ºC
T
DL
63ºC
68ºC
73ºC
88ºC
T
DH
OV
.