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参数资料
| 型号： | DS2731E+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC MANAGEMENT BACKUP 28-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 备份管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 10.8 V ~ 13.2 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
Cache-Memory Battery-Backup Management IC
Setting Memory Voltage
1.79
1.78
1.77
1.76
1.75
1.74
1.73
LINE REGULATION vs. V BATT AT LOADS
and Low-Battery Shutdown
The cache-memory and low-battery shutdown voltages
are set using a 1.25V reference and resistor-divider.
The 1.25V reference is supplied at the REF pin. This pin
cannot supply power for any system loads. In order to
ensure that the voltage reference is not overloaded, a
1M ? total resistor-divider network is recommended.
Memory Voltage
The voltage on the DIV pin is the average DC voltage
set point to which the cache-memory supply regulates.
1.72
2.8
20mA
3.6
V BATT (V)
250mA
4.2
The cache-memory supply voltage can range from 0.9V
to 2.5V and is set by the following formula:
V DIV x 25/12 = V VREG
Low-Battery Shutdown
The voltage on the LO_BATT pin is compared to the
Figure 7b. Memory Buck Regulator Line Regulation vs. Battery
Voltage at Loads
I OCLP
I OCDC
I OCLN
prescaled battery voltage. The scale factor is 4.5:1.
When the scaled battery voltage drops below the volt-
age on LO_BATT, the IC goes into quiescent-power
mode. All circuitry is shut off and does not turn on
again until the V BIAS voltage is stable and UVLO-REG
is off. The low-battery voltage set point can be deter-
mined by the following formula:
V LO_BATT x 4.5 = Low-Battery Voltage Set Point
P ON
N ON
P ON
N ON
P ON
N ON
P ON
N ON
Figure 8. Buck Regulator Overcurrent Switching
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2731EVKIT+ | 制造商:Maxim Integrated Products 功能描述:12V A DC/DC CONVERTER - Boxed Product (Development Kits) |
| DS2731K | 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 |
| DS2733E+ | 功能描述:电池管理 BBU Power IC 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 |
| DS2733E+T&R | 制造商:Maxim Integrated Products 功能描述:BBU POWER IC 20-TSSOP T&R LF - Tape and Reel |
| DS2733E+T&R | 功能描述:电池管理 BBU Power IC 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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