NCP373: Voltage Protection, ±30 V , with Load Switch
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The NCP373 is an overvoltage, overcurrent and reverse control device. Two main modes are available by setting logic pins.
First mode is Charging Mode from Wall Adapter to the system or from Vbus port to downstream DCDC. In this mode the system is both positive and negative overvoltage protected up to +28 V and down to -28 V. The wall adapter is disconnected from the system if the input voltage exceeds the overvoltage (OVLO) or undervoltage (UVLO) thresholds.
The second mode, called the Reverse Mode, allows an external accessory to be powered by the system battery or supply upstream accessory through Vbus port. Here, the external accessory would be connected to the device input (bottom connector of system) and the device battery would be at the device output. In this case, overcurrent protection (externally adjustable) is activated to prevent accessory faults and battery discharge. Thanks to the NCP373 using an internal NMOS, the system cost and the PCB area of the application board are minimized. The NCP373 provides a negative going flag (FLAG(BAR)) output which alerts the system that a fault has occurred. In addition, the device has ESD protected input (15 kV Air) when bypassed with a 1.0 µF or larger capacitor.
First mode is Charging Mode from Wall Adapter to the system or from Vbus port to downstream DCDC. In this mode the system is both positive and negative overvoltage protected up to +28 V and down to -28 V. The wall adapter is disconnected from the system if the input voltage exceeds the overvoltage (OVLO) or undervoltage (UVLO) thresholds.
The second mode, called the Reverse Mode, allows an external accessory to be powered by the system battery or supply upstream accessory through Vbus port. Here, the external accessory would be connected to the device input (bottom connector of system) and the device battery would be at the device output. In this case, overcurrent protection (externally adjustable) is activated to prevent accessory faults and battery discharge. Thanks to the NCP373 using an internal NMOS, the system cost and the PCB area of the application board are minimized. The NCP373 provides a negative going flag (FLAG(BAR)) output which alerts the system that a fault has occurred. In addition, the device has ESD protected input (15 kV Air) when bypassed with a 1.0 µF or larger capacitor.
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Technical Documentation & Design Resources
Data Sheets (1) | Package Drawings (1) |
Availability & Samples
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Specifications
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Case Outline |
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NCP373MU04TXG | Last Shipments |
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NCP373, Load Switch with Voltage Protection +/- 30V | LLGA-12 | 513AK | 1 | 260 | Tape and Reel | 3000 | |||||||||
NCP373MU13TXG | Active |
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NCP373, POS & NEG OVP WITH OCP | LLGA-12 | 513AK | 1 | 260 | Tape and Reel | 3000 | $0.6
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Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | 17 to 20 |
Product
Description
Pricing ($/Unit)
Compliance
Status
VCC Min (V)
VCC Max (V)
P(AV) Max (W)
VIT+ Typ (V)
VIT Typ (V)
IDDH Max (µA)
TA Min (°C)
TA Max (°C)
Package Type
NCP373MU13TXG
$0.6
Pb
A
H
P
Active
1.2
30
0.8
5.77
5.705
315
-40
125
LLGA-12
Case Outlines
513AK
Support |