DS2740U+ Maxim Integrated Products, DS2740U+ Datasheet - Page 4

• 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 2. DETAILED PIN DESCRIPTIONS
Figure 2. APPLICATION EXAMPLE
OVD
SNS
PIN
V
PIO
IS2
IS1
V
DQ
DD
SS
SYMBOL
1
2
3
4
5
6
7
8
DATA
PIO
GND
System
2.7V to 5.5V
System Supply
Battery Pack
1-Wire Bus Speed Control. Input logic level selects the speed of the 1-
Wire bus. Logic 1 selects overdrive (OVD) and Logic 0 selects standard
timing (STD). On a multidrop bus, all devices must operate at same
speed.
Programmable I/O Pin. Programmed as input or output through internal
registers. Open-drain output sufficient for LED or vibrator activation.
Current-Sense Resistor Input
Current-Sense Input. Connected to SNS through a 10kΩ resistor to
allow filtering of the current waveform by an external capacitor.
Current-Sense Input. Connected to V
filtering of the current waveform through an external capacitor.
Device Ground, Current-Sense Resistor Return. Connect directly to
the negative terminal of the battery cell.
Data I/O Pin. Operates bidirectionally with open-drain output driver.
Internal 1µA pulldown aids in sensing pack removal and Sleep-mode
activation.
Power-Supply Input. Connects to system voltage supply or positive
terminal of battery cell.
* 5.6V zener recommended for ESD protection when DATA or PIO
contacts exposed, such as a removable battery pack application
150
330
*
Positive
*
or
DQ
PIO
SNS
IS2
4 of 16
DS2740
R
SNS
DESCRIPTION
104
OVD
VDD
VSS
IS1
SS
through a 10kΩ resistor to allow
150
Connection
To
Battery
Negative
104