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参数资料
| 型号： | MAX17049G+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/19页 |
| 文件大小： | 0K |
| 描述： | IC FUEL/GAS GAUGE LI-ION 8TDFN |
| 标准包装： | 1 |
| 系列： | ModelGauge™ |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 2.5 V ~ 4.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（2x2） |
| 包装： | 管件 |
MAX17048/MAX17049
Micropower 1-Cell/2-Cell Li+ ModelGauge ICs
Alert Interrupt
The ICs can interrupt a system microcontroller with five
configurable alerts (see Table 1). All alerts can be disa-
bled or enabled with software. When the interrupt occurs,
the system microcontroller can determine the cause from
the STATUS register.
When an alert is triggered, the IC drives the ALRT
pin logic-low and sets CONFIG.ALRT = 1. The ALRT
pin remains logic-low until the system software writes
CONFIG.ALRT = 0 to clear the alert. The alert function is
enabled by default, so any alert can occur immediately
upon power-up. Entering sleep mode clears no alerts.
Sleep Mode
In sleep mode, the IC halts all operations, reducing cur-
rent consumption to below 1 F A. After exiting sleep mode,
the IC continues normal operation. In sleep mode, the IC
does not detect self-discharge. If the battery changes state
while the IC sleeps, the IC cannot detect it, causing SOC
error. Wake up the IC before charging or discharging. To
enter sleep mode, write MODE.EnSleep = 1 and either:
U Hold SDA and SCL logic-low for a period for t SLEEP .
A rising edge on SDA or SCL wakes up the IC.
U Write CONFIG.SLEEP = 1. To wake up the IC, write
CONFIG.SLEEP = 0. Other communication does not
wake up the IC. POR does wake up the IC.
Applications which can tolerate 4 F A should use hibernate
rather than sleep mode.
Table 1. Alert Interrupt Summary
Register Summary
All registers must be written and read as 16-bit words;
8-bit writes cause no effect. Any bits marked X (don’t
care) or read only must be written with the rest of the
register, but the value written is ignored by the IC. The
values read from don’t care bits are undefined. Calculate
the register’s value by multiplying the 16-bit word by the
register’s LSb value, as shown in Table 2.
VCELL Register (0x02)
The MAX17048 measures VCELL between the V DD and
GND pins. The MAX17049 measures VCELL between the
CELL and GND pins. VCELL is the average of four ADC
conversions. The value updates every 250ms in active
mode and every 45s in hibernate mode.
SOC Register (0x04)
The ICs calculate SOC using the ModelGauge algorithm.
This register automatically adapts to variation in battery
size since ModelGauge naturally recognizes relative SOC.
The upper byte least-significant bit has units of 1%. The
lower byte provides additional resolution.
The first update is available approximately 1s after POR
of the IC. Subsequent updates occur at variable intervals
depending on application conditions.
ALERT FUNCTION
Low SOC
SOC 1% change
Reset
Overvoltage
Undervoltage
Table 2. Register Summary
WHERE CONFIGURED
CONFIG.ATHD
CONFIG.ALSC
VRESET, STATUS.RI
VALRT.MAX
VALRT.MIN
INDICATOR BIT
STATUS.HD
STATUS.SC
STATUS.VR
STATUS.VH
STATUS.VL
ADDRESS
0x02
0x04
0x06
0x08
0x0A
REGISTER
NAME
VCELL
SOC
MODE
VERSION
HIBRT
16-BIT LSb
78.125 F V/cell
1%/256
—
—
—
DESCRIPTION
ADC measurement of VCELL.
Battery state of charge.
Initiates quick-start, reports hibernate mode,
and enables sleep mode.
IC production version.
Controls thresholds for entering and exiting
hibernate mode.
READ/WRITE
R
R
W
R
R/W
DEFAULT
—
—
0x0000
0x001_
0x8030
Maxim Integrated
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17049G+ | 功能描述:电池管理 Host-Side Modelgauge (2-Cell) 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 |
| MAX17049G+T10 | 功能描述:电池管理 Host-Side Modelgauge (2-Cell) 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 |
| MAX17049X+ | 功能描述:电池管理 Host-Side Modelgauge (2-Cell) WLCSP 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 |
| MAX17049X+T10 | 功能描述:电池管理 Host-Side Modelgauge (2-Cell) WLCSP 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 |
| MAX17050EVKIT# | 功能描述:电源管理IC开发工具 MAX17050 Eval Kit 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 |
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