DS2740U+ Maxim Integrated Products, DS2740U+ Datasheet - Page 2

• Manufacturer Part Number: DS2740U+
• Description: IC CURRENT GAUGE(15BIT) 8UMAX
• Manufacturer: Maxim Integrated Products

Specifications of DS2740U+

• Function: Current Gauge (15 Bit)
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Battery Type: Li-Ion, NiMH
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: No
• Mounting Style: SMD/SMT
• Temperature Monitoring: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Accuracy: -
• Sensing Method: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table 1. ORDERING INFORMATION
Note: A “+” will also be marked on the package next to the pin 1 indicator.
DESCRIPTION
The DS2740 provides high-precision current-flow measurement data to support battery-capacity
monitoring in cost-sensitive applications. Current is measured bidirectionally over a dynamic range of 15
bits (DS2740U) or 13 bits (DS2740BU), with the net flow accumulated in a separate 16-bit register.
Through its 1-Wire interface, the DS2740 allows the host system read/write access to status and current
measurement registers. Each device has a unique factory-programmed 64-bit net address that allows it to
be individually addressed by the host system, supporting multibattery slot operation. The interface can be
operated with standard or overdrive timing.
Although the DS2740 is primarily intended for location on the host system, it is also suited for mounting
in the battery pack. The DS2740 and FuelPack™ algorithms, along with host measurements of
temperature and voltage, form a complete and accurate solution for estimating remaining capacity.
FuelPack is a trademark of Dallas Semiconductor.
DS2740U
DS2740U+
DS2740U/T&R
DS2740U+T&R
DS2740BU
DS2740BU+
DS2740BU/T&R
DS2740BU+T&R
PART
D2740 (see note)
D2740 (see note)
2740B (see note)
2740B (see note)
MARKING
D2740
D2740
2740B
2740B
15-Bit Current Resolution, 8-Pin μMAX
15-Bit Current Resolution, Lead-Free 8-Pin μMAX
15-Bit Current Resolution, 8-Pin μMAX, Tape-and-Reel
15-Bit Current Resolution, Lead-Free 8-Pin μMAX, Tape-
and-Reel
13-Bit Current Resolution, 8-Pin μMAX
13-Bit Current Resolution, Lead-Free 8-Pin μMAX
13-Bit Current Resolution, 8-Pin μMAX, Tape-and-Reel
13-Bit Current Resolution, Lead-Free 8-Pin μMAX, Tape-
and-Reel
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DESCRIPTION