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参数资料
| 型号： | MAX1259CWE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/7页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY MANAGER 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 功能： | 备份管理 |
| 电池化学： | 所有电池类型 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
Battery Manager
+5V
V CCI
0V
50ns MIN
RST
V IH
V IL
+5V
V CCO +3V
0V
+3V
BAT
0V
Figure 4. Reset Timing
To achieve rated performance, the V CC input should be
connected to both V CCI pins (pins 15 and 16). As well,
the switched output should be connected to both V CCO
pins (pins 12 and 13).
Power Fail
The power-fail ( PF ) output is high for V CCI greater than
1.26 x V BATT (V TP ), indicating a valid V CCI voltage.
Battery Fail
If V CCI is at or above the voltage trip threshold (V TP )
and the backup battery is greater than 2V, the battery-
fail ( BF ) output will be held high, indicating a charged
battery. If the backup battery drops below 2V or V CCI
falls below V TP , BF will be driven low.
BAT Output
During normal operation, the BAT output stays at the
battery voltage, regardless of the V CCI level. This pro-
vides 1mA battery current.
HIGH IMPEDANCE
HIGH IMPEDANCE
RESET (Digitally Controlled
Battery Disconnect)
To prevent battery discharge during shipping, the back-
up battery can be disconnected from V CCO to BAT.
This disconnect feature is activated by pulsing the
reset (RST) input high for a minimum of 50ns with V CCI
greater than V TP (Figure 4). When primary power is
removed, the V CCO and BAT outputs will go high
impedance. The next time primary power is applied
with V CCI greater than 1.26 x V BATT (V TP ), normal oper-
ation resumes. Note that when the MAX1259 is first
powered up, V CCI must be brought above 1.26 x
V BATT . This resets an internal flip-flop, ensuring that the
part is in normal V CC mode and not in shipping mode.
Applications Information
If a protection diode is placed in series with the backup
battery, pin 2 must be bypassed with at least a 0.01μF
capacitor to ground.
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1259EPE | 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 |
| MAX1259EPE+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1259EWE | 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 |
| MAX1259EWE+ | 功能描述:电池管理 Battery Manager 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 |
| MAX1259EWE+T | 功能描述:电池管理 Battery Manager 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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