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参数资料
| 型号： | DS2756E-5+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/27页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE BATT 3V 8-TSSOP |
| 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： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
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DS2756: High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode
SNAPSHOT MODE
Measurement of the current and voltage can be synchronized to a system event with the Snapshot mode.
Triggering a Snapshot event causes the ADC to abandon the current conversion and capture one current and one
voltage sample. The Snapshot results are reported in the Current and Voltage registers for retrieval by the host.
Normal current, voltage and temperature measurements and current accumulation resume immediately following a
Snapshot event, though the Snapshot current and voltage values persist until the host system writes the SNAP bit
in the Special Function Register to a 0. Since the snapshot mode disrupts the continuity of the coulomb counting
process, it should be used sparingly.
The Sync Function Command [D2h] signals the ADC control to expect a Snapshot trigger on DQ. Following the
Sync command, the host can trigger a Snapshot event by toggling the DQ line. Synchronization occurs on the
rising edge of the DQ high to low to high pulse. The Snapshot mode can be abandoned by sending a 1-Wire Reset
instead of the synchronization pulse. The rising edge DQ trigger is formed by the first data bit after issuing the Sync
Function command. A full byte can be issued, but the rising edge of the first bit sets the trigger point. The SNAP bit
is set after the rising edge trigger. Timing is not critical and could be several 100 ? s later since it cannot be read
quickly via 1-Wire. If a 1-Wire reset is issued instead of a data bit, then the Snapshot is abandoned (SNAP bit not
set).
The Snapshot Synchronization Timing in Figure 13 illustrates the timing of the Snapshot current and voltage
sample apertures relative to the DQ rising edge trigger and one timeslot GSM power amp load pulse. In the
-1
a single GSM timeslot.
Figure 13. Snapshot Synchronization Timing
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2756EVKIT+ | 制造商:Maxim Integrated Products 功能描述:HIGH-ACCURACY BATTERY FUEL GAUGE WITH PROGRAMMABLE SUSPEND M - Boxed Product (Development Kits) |
| DS2756K | 功能描述:电池管理 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 |
| DS275E | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| DS275E/T&R | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC TXRX LINE-PWR RS232 14-TSSOP |
| DS275E/T&R | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
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