NCP374: Overvoltage Up to +30 V and Down to -30 V with Load Switch Function

The NCP374 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 NCP374 using an internal NMOS, the system cost and the PCB area of the application board are minimized. The NCP374 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.

Features
  • Overvoltage Protection up to 28 V
  • Overvoltage Protection down to -28 V
  • On-Chip Low RDS(on) NMOS Transistor: 80 mΩ
  • Overvoltage and Undervoltage Lockout (OVLO and UVLO)
  • Alert FLAG(BAR) Output
  • Logic pins /DIR and /EN
  • Adjustable Reverse Overcurrent protection up to 750 mA
  • Soft start
Applications
  • Over-Voltage Protection
End Products
  • Mobile Phones, Digital Still Cameras, Personal Media Player, other USB hosts
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Overvoltage Up to +30 V and Down to -30 V with Load Switch FunctionNCP374/D (136.0kB)0
Evaluation Board Documents (4)
Document TitleDocument ID/SizeRevisionRevision Date
NCP374MU075GEVB Bill Of Materials (ROHS Compliant)NCP374MU075GEVB_BOM_ROHS.PDF (169kB)0
NCP374MU075GEVB Gerber Layout Files (Zip Format)NCP374MU075GEVB_GERBER.ZIP (71kB)0
NCP374MU075GEVB SchematicNCP374MU075GEVB_SCHEMATIC.PDF (277kB)0
NCP374MU075GEVB Test ProcedureNCP374MU075GEVB_TEST_PROCEDURE.PDF (468kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
TLLGA12 4x4, 0.5P513AP (54.1kB)O
Evaluation/Development Tool Information
ProductStatusComplianceShort Description
NCP374MU075GEVBActivePb-freeOvervoltage Up to +30 V and Down to -30 V with Load Switch Function Evaluation Board
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP374MU075TXGActivePb-free Halide freeTLLGA-12513AP1Tape and Reel3000$0.7333
Specifications
ProductVCC Min (V)VCC Max (V)P(AV) Max (W)VIT+ Typ (V)VIT Typ (V)IDDH Max (µA)TA Min (°C)TA Max (°C)
NCP374MU075TXG1.2300.85.775.705315-4085
Overvoltage Up to +30 V and Down to -30 V with Load Switch Function (136.0kB) NCP374
NCP374MU075GEVB BOM ROHS NCP374MU075GEVB
NCP374MU075GEVB GERBER NCP374MU075GEVB
NCP374MU075GEVB SCHEMATIC NCP374MU075GEVB
NCP374MU075GEVB TEST PROCEDURE NCP374MU075GEVB
TLLGA12 4x4, 0.5P NCP374