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Adjustable Overvoltage Protector
with High Accuracy
Pin Description
PIN
1, 2
3
4, 5
6
7, 8
—
NAME
IN
OVLO
I.C.
GND
OUT
EP
FUNCTION
Voltage Input. Bypass IN with a 1μF ceramic capacitor as close as possible to the device to obtain ±15kV
Human Body Model (HBM) ESD protection. Connect all the IN pins together for proper operation. IN is
protected to ±2kV HBM when IN is not bypassed with a capacitor to GND.
External OVLO Adjustment. Connect OVLO to GND when using the internal threshold. Connect a resistor-
divider to OVLO to set a different OVLO threshold; this external resistor-divider is completely independent
from the internal threshold.
Internally Connected. Do not connect. Leave I.C. unconnected.
Ground
Output Voltage. Output of internal switch. Connect all the OUT outputs together for proper operation.
Exposed Pad. Connect exposed pad to ground. For enhanced thermal dissipation, connect EP to a copper
area as large as possible. Do not use EP as a sole ground connection.
Functional Diagram
IN
OUT
IN
OUT
CHARGE
PUMP
TEMPERATURE
FAULTS
OVLO
SEL
V BG
REFERENCE
+
-
MAX14527
LOGIC
CONTROL
GND
Detailed Description
The MAX14527/MAX14528 overvoltage protection
devices feature a low R ON internal FET and protect low-
voltage systems against voltage faults up to +28V. If
the input voltage exceeds the overvoltage threshold,
the internal FET is turned off to prevent damage to the
protected components. The 15ms debounce time pre-
vents false turn-on of the internal FET during startup.
MAX14528
Device Operation
The MAX14527/MAX14528 have timing logic that
controls the turn-on of the internal FET. If V IN <
V OVLO_THRESH , the internal charge pump is enabled.
The charge-pump startup, after a 15ms debounce
delay, turns on the internal FET (see the Functional
Diagram ). At any time, if V IN rises above V OVLO_
THRESH , OUT is disconnected from IN.
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5
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相关代理商/技术参数
MAX14528BETA+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX14528BETA+T 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX14528ETA+T 功能描述:监控电路 Over Volt Protector w/High Accuracy RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel
MAX14528EVKIT+ 制造商:Maxim Integrated Products 功能描述:EVKITS - Boxed Product (Development Kits)
MAX14529EEVKIT 功能描述:电源管理IC开发工具 MAX14529E Eval Kit 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
MAX14529EEVKIT+ 功能描述:电源管理IC开发工具 MAX14529E Eval Kit 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
MAX14529EEWC+ 制造商:Maxim Integrated Products 功能描述:- Bulk
MAX14529EEWC+T 功能描述:监控电路 Over Volt Protector w/USB Charger Detect RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel