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参数资料
| 型号： | MAX4971EWC+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/9页 |
| 文件大小： | 0K |
| 描述： | IC OVERVOLTAGE PROT CTRLR 12WLP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 过压保护控制器 |
| 输入电压： | 2.2 V ~ 28 V |
| 电流 - 电源： | 60µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFBGA，WLCSP |
| 供应商设备封装： | 12-WLP |
| 包装： | 带卷 (TR) |
Overvoltage-Protection Controllers
with a Low R ON Internal FET
OVLO
UVLO
IN
t ON
90% V OUT
t OFF
t OFF
OUT
t INDBC
10% V OUT
t INDBC
t INDBC
t OFF
GP
t ACOK
t ACOK
t ACOK
t ACOK
t ACOK
*ACOK
t ACOK
t ACOK
**ACOK
*ACOK TIMING FOR THE MAX4972.
**ACOK TIMING FOR THE MAX4970/MAX4971.
Figure 1. MAX4970/MAX4971/MAX4972 Timing Diagram
Note that the UVLO threshold is measured at IN, but the
nFET ON
t OFF
nFET ON
input voltage is applied at the drain of the external
pFET. The body diode of the external pFET adds to the
UVLO threshold increasing its value to V BODYDIODE +
V UVLO . The internal clamp diode limits the gate to
source voltage on the external pFET to 7.0V (typ) for
protection of the pFET during an overvoltage fault.
t RETRY
nFET OFF
Undervoltage Lockout (UVLO)
The MAX4970/MAX4971/MAX4972 have a 2.45V under-
voltage-lockout threshold (UVLO). When V IN is less
than V UVLO , ACOK is high impedance.
CURRENT
THROUGH
nFET
I LIM
Overvoltage Lockout (OVLO)
The MAX4970 has a 5.8V (typ) overvoltage thres-
hold (OVLO), the MAX4971 has a 6.35V (typ) OVLO
threshold, and the MAX4972 has a 4.65V (typ) OVLO
threshold. When V IN is greater than V OVLO , ACOK is
Figure 2. Autoretry Timing Diagram
high impedance for the MAX4972.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4972EBC+T | 功能描述:电流和电力监控器、调节器 Overvoltage-Protect Controller RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX4972EWC+T | 功能描述:电流和电力监控器、调节器 Overvoltage-Protect Controller RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX4978ETA+ | 制造商:Maxim Integrated Products 功能描述:OVERVOLTAGE PROTECTOR WITH ACTIVE C - Rail/Tube |
| MAX4978ETA+T | 功能描述:电流和电力监控器、调节器 Overvoltage-Protect Controller RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX497C/D | 功能描述:运算放大器 - 运放 RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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