- 您现在的位置：买卖IC网 > PDF目录1842 > MAX4971EWC+T (Maxim Integrated Products)IC OVERVOLTAGE PROT CTRLR 12WLP PDF资料下载
参数资料
| 型号： | MAX4971EWC+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/9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
ACOK
ACOK is an active-low, open-drain output that asserts
low when V UVLO < V IN < V OVLO for 15ms (typ) for the
MAX4972. ACOK asserts low when V IN > V UVLO for
15ms (typ) for the MAX4970 and MAX4971. Connect a
pullup resistor from ACOK to the logic I/O voltage of
the host system. During a short-circuit fault, ACOK
may deassert due to V IN dropping below V UVLO from
high current.
Thermal-Shutdown Protection
The MAX4970/MAX4971/MAX4972 feature thermal-
shutdown circuitry. The internal nFET turns off when the
junction temperature exceeds +150°C (typ). The device
ESD Test Conditions
ESD performance depends on a number of conditions.
The MAX4970/MAX4971/MAX4972 are specified for
±15kV (HBM) typical ESD resistance on IN when IN is
bypassed to ground with a 1μF ceramic capacitor.
HBM ESD Protection
Figure 3 shows the Human Body Model, and Figure 4
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the device through a
1.5k Ω resistor.
exits thermal shutdown after the junction temperature
cools by 40°C (typ).
Applications Information
Reverse Polarity Protection
R C
1M Ω
CHARGE-CURRENT-
LIMIT RESISTOR
R D
1.5k Ω
DISCHARGE
RESISTANCE
The optional external p-channel MOSFET can provide
reverse polarity protection down to the voltage rating of
the pFET.
HIGH-
VOLTAGE
DC
SOURCE
Cs
100pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
IN Bypass Capacitor
For most applications, bypass IN to GND with a 1μF
ceramic capacitor as close as possible to the device to
enable ±15kV (HBM) ESD protection on the pin. If the
external pFET is used, the 1uF capacitor must be con-
nected between the drain and ground. If ±15kV (HBM)
ESD is not required, there is no capacitor required at
Figure 3. Human Body ESD Test Model
IN. If the power source has significant inductance due
to long lead length, take care to prevent overshoots
I P 100%
90%
Ir
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
due to the LC tank circuit and provide protection if nec-
essary to prevent exceeding the +30V absolute maxi-
mum rating on IN.
OUT Output Capacitor
The slow turn-on time provides a soft-start function that
AMPERES
36.8%
10%
0
allows the MAX4970/MAX4971/MAX4972 to charge an
output capacitor up to 1000μF without turning off due to
an overcurrent condition.
0
t RL
TIME
t DL
CURRENT WAVEFORM
Figure 4. Human Body Current Waveform
8
_______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MAX4981ETA+T | IC OVERVOLTAGE PROT CTRLR 8TDFN |
| MAX5003ESE+ | IC REG CTRLR FLYBK ISO VM 16SOIC |
| MAX5005BCUB+ | IC REG USB LDO 150MA 10-UMAX |
| MAX5008CUB+T | IC CHARGE PUMP USB 5V 10-UMAX |
| MAX5015ESA+T | IC REG CTRLR ISO PWM CM 8-SOIC |
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 |
发布紧急采购，3分钟左右您将得到回复。