DataSheetWiki


DS2786 fiches techniques PDF

Maxim Integrated Products - Standalone OCV-Based Fuel Gauge

Numéro de référence DS2786
Description Standalone OCV-Based Fuel Gauge
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





1 Page

No Preview Available !





DS2786 fiche technique
www.maxim-ic.com
GENERAL DESCRIPTION
The DS2786 estimates available capacity for
rechargeable Li-Ion and Li-Ion Polymer batteries
based on the cell voltage in the open-circuit state
following a relaxation period. The open-circuit voltage
(OCV) is used to determine relative cell capacity
based on a lookup table stored in the IC. This
capability makes accurate capacity information
available immediately after a battery pack is inserted.
During periods of moderate to high rate discharging,
which preclude OCV measurements, the DS2786
uses coulomb counting as a secondary means of
estimating relative capacity.
Remaining capacity is reported in percent, along with
cell voltage, current and temperature information.
Cell characteristics and application parameters used
in the calculations are stored in on-chip EEPROM.
The DS2786 is intended for use on the host side of
portable devices, though it can also be mounted
within a battery pack. Measurement and estimated
capacitywww.DataSheet4U.com data are accessed through an I2C interface.
Temperature data is available from an on-die sensor.
Resistance measurements of a pack identification
resistor and pack thermistor are supported by
ratiometric measurements on two auxiliary inputs.
APPLICATIONS
3G Multimedia Wireless Handsets
Digital Still Cameras
Digital Audio (MP3) Players
TYPICAL OPERATING CIRCUIT
DS2786
Standalone OCV-Based Fuel Gauge
FEATURES
ƒ Relative Capacity Calculated from
Combination Coulomb Counter and Open-
Circuit Cell Voltage (OCV) Battery Model
ƒ Accurate Warning of Low Battery Conditions
Even On First Cycle (No Learn Cycle Needed)
ƒ 12-Bit Battery Voltage Measurement:
±10mV Accuracy
1.22mV LSB, 0V to 5V Input Range
ƒ 11-Bit Bidirectional Current Measurement:
25μV LSB, ±51.2mV Dynamic Range
1.67mA LSB, ±3.4A (RSNS = 15mΩ)
ƒ Current Accumulation Measurement
Resolution:
±204.8mVh Range
±13.65Ah (RSNS = 15mΩ)
ƒ Internal Temperature Measurement:
0.125°C LSB, ±3°C Accuracy
ƒ Two 11-Bit Aux Input Voltage Measurements:
±8 LSB Accuracy, Ratiometric Inputs
Eliminate Supply Accuracy Issues
ƒ VOUT Pin Drives Resistive Dividers, Reduces
Current Consumption
ƒ 2-Wire Interface
ƒ Low Power Consumption:
Active Current: 50μA typ, 80μA max
Sleep Current: 1μA typ, 3μA max
ORDERING INFORMATION
PART
DS2786G+
DS2786G+T&R
TEMP RANGE
-20ºC to +70ºC
-20ºC to +70ºC
PIN-PACKAGE
10-pin 3mm×3mm
TDFN
DS2786G+ in
Tape-and-Reel
+ Denotes lead-free package.
PIN CONFIGURATION
Commands, Registers, and Modes are capitalized for clarity.
1 of 21
3mm x 3mm TDFN-10
Top View
050907

PagesPages 21
Télécharger [ DS2786 ]


Fiche technique recommandé

No Description détaillée Fabricant
DS2780 Stand-Alone Fuel Gauge IC Maxim Integrated Products
Maxim Integrated Products
DS2781 1-Cell or 2-Cell Standalone Fuel Gauge IC Maxim Integrated Products
Maxim Integrated Products
DS2782 Stand-Alone Fuel Gauge IC Maxim Integrated Products
Maxim Integrated Products
DS27820 Remote Control Color TV Service Manual Sanyo
Sanyo

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche