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参数资料
| 型号： | DS2786G-5+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/22页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE OCV-BASED 10-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x4） |
| 包装： | 带卷 (TR) |
Slave Address is 0110110. The upper 3 bits are fixed at 011, the lower 4 bits can be changed by writing the I C
DS2786 Stand-Alone OCV-Based Fuel Gauge
Bus Idle
The bus is defined to be idle, or not busy, when no master device has control. Both SDA and SCL remain high
when the bus is idle. The STOP condition is the proper method to return the bus to the idle state.
START and STOP Conditions
The master initiates transactions with a START condition (S), by forcing a high-to-low transition on SDA while SCL
is high. The master terminates a transaction with a STOP condition (P), a low-to-high transition on SDA while SCL
is high. A Repeated START condition (Sr) can be used in place of a STOP then START sequence to terminate one
transaction and begin another without returning the bus to the idle state. In multimaster systems, a Repeated
START allows the master to retain control of the bus. The START and STOP conditions are the only bus activities
in which the SDA transitions when SCL is high.
Acknowledge Bits
Each byte of a data transfer is acknowledged with an Acknowledge bit (A) or a No Acknowledge bit (N). Both the
master and the DS2786 slave generate acknowledge bits. To generate an Acknowledge, the receiving device must
pull SDA low before the rising edge of the acknowledge-related clock pulse (ninth pulse) and keep it low until SCL
returns low. To generate a No Acknowledge (also called NAK), the receiver releases SDA before the rising edge of
the acknowledge-related clock pulse and leaves SDA high until SCL returns low. Monitoring the acknowledge bits
allows for detection of unsuccessful data transfers. An unsuccessful data transfer can occur if a receiving device is
busy or if a system fault has occurred. In the event of an unsuccessful data transfer, the bus master should re-
attempt communication.
Data Order
A byte of data consists of 8 bits ordered most significant bit (MSB) first. The least significant bit (LSB) of each byte
is followed by the Acknowledge bit. DS2786 registers composed of multibyte values are ordered most significant
byte (MSB) first. The MSB of multibyte registers is stored on even data memory addresses.
Slave Address
A bus master initiates communication with a slave device by issuing a START condition followed by a Slave
Address (Saddr) and the read/write (R/ W ) bit. When the bus is idle, the DS2786 continuously monitors for a START
condition followed by its slave address. When the DS2786 receives a slave address that matches its Slave
Address, it responds with an Acknowledge bit during the clock period following the R/ W bit. The factory default 7-bit
2
Address Configuration Register at location 7Dh.
Figure 24. I 2 C Address Configuration Register Format
ADDRESS 7Dh
BIT 7
ADDR3
BIT 6
ADDR2
BIT 5
ADDR1
BIT 4
ADDR0
BIT 3
X
BIT 2
X
BIT 1
X
BIT 0
X
Bits 7 to 4: ADDR[3:0] —User-adjustable bits of the DS2786’s I 2 C address. Factory default is 0110.
Bits 3 to 0: X —Reserved.
Figure 25. DS2786 I 2 C Address Byte Format
BIT 7
0
BIT 6
1
BIT 5
1
BIT 4
ADDR3
BIT 3
ADDR2
BIT 2
ADDR1
BIT 1
ADDR0
BIT 0
R/ W
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2786K | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2786K-SMP | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2788 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel-Gauge IC with LED Display Drivers |
| DS2788_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel-Gauge IC with LED Display Drivers |
| DS2788E+ | 功能描述:电池管理 Stand-Alone F-Gauge w/LED Display Drvrs RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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