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参数资料
| 型号： | MAX16023LTAM33+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY BACKUP 3.3V 8TDFN-EP |
| 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： | 所有电池类型 |
| 电源电压： | 1.53 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-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
Battery-Backup Circuits with
Regulated Output Voltage
Applications Information
The MAX16023/MAX16024 are protected for typical
short-circuit conditions of 10s or less. Shorting OUT to
ground for longer than 10s might damage the device.
Bypass V CC and BATT to GND with a 0.1μF capacitor
each. Connect a 10μF low-ESR capacitor from OUT to
GND. All capacitors should be mounted as close as
possible to the device.
Monitoring an Additional Supply
The MAX16023 power-fail comparator can monitor
either positive or negative supplies using a resistive
divider to PFI (Figures 3 and 4). PFO can be used to
generate an interrupt to the μP or to trigger a reset. To
monitor a negative supply, connect the top of the resis-
tive divider to V CC . Connect the bottom of the resistive
divider to the negative voltage to be monitored.
V 1
Adding Hysteresis to PFI
The power-fail comparators have a typical input hys-
teresis of V PFI-HYS . This is sufficient for most applica-
tions where a power-supply line is being monitored
through an external voltage-divider (see the Monitoring
an Additional Supply section). Figure 5 shows how to
add hysteresis to the power-fail comparator. Select the
ratio of R1 and R2 such that PFI sees V PFT when V IN
falls to the desired trip point (V TRIP ). Resistor R3 adds
hysteresis. R3 is typically an order of magnitude greater
than R1 or R2. The current through R1 and R2 should
be at least 100μA to ensure that the 1μA (max) PFI
input current does not shift the trip point. R3 should be
larger than 50k Ω to prevent it from loading down PFO .
Capacitor C1 adds additional noise rejection.
5V
0.1 μ F
R1
0.1 μ F
V 2
V CC
V CC
R1
RESET
RESET
PFI
PFO
μ P
R2
PFI
MAX16023L
PFO
MR
R2
V-
MAX16023
(
GND
GND
V TRIP = V PFT - R2 5 - V PFT
R1
)
V TRIP IS NEGATIVE
( )
ADDITIONAL SUPPLY RESET VOLTAGE
V 2(RESET) = V PFT x R1 + R2
R2
PFO
+5V
0
V TRIP
0
V-
Figure 3. Monitoring an Additional Supply by Connecting PFO
to MR
Figure 4. Monitoring a Negative Supply
______________________________________________________________________________________
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16023LTAR12+T | 功能描述:电池管理 Battery Backup 1.2V-Ep 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 |
| MAX16023LTAR18+T | 功能描述:电池管理 Battery Backup 1.8V-Ep 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 |
| MAX16023LTAR25+T | 功能描述:电池管理 Battery Backup 2.5V-Ep 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 |
| MAX16023LTAS12+T | 功能描述:电池管理 Battery Backup 1.2V-Ep 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 |
| MAX16023LTAS18+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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