NCP349MNAETBG Protection by ON Semiconductor

Positive Overvoltage Protection Circuit with Internal Low Ron NMOS FET


The NCP349 is able to disconnect the systems from its output pin in case wrong input operating conditions are detected. The system is positive overvoltage protected up to +28 V. Due to this device using internal NMOS, no external device is necesary, reducing the system cost and the PCB area of the application board. The NCP349 is able to instantaneously disconnect the output from the input, due to integrated Low Ron Power NMOS (65 mΩ, if the input voltage exceeds the overvoltage threshold (OVLO) or undervoltage threshold(UVLO). At powerup (EN(BAR) pin = low level), the Vout turns on ton after the Vin exceeds the undervoltage threshold. The NCP349 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.

Where to Buy

Prices starting from US$0.32

Distributor Stock
Logo for RS
RS
from US$0.32
No stock
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Logo for Kruse
Kruse
-
70,000
in stock
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Logo for RS Americas
RS Americas
from US$0.56
-
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Logo for element14
element14
from US$0.40
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Logo for Farnell
Farnell
from US$0.72
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Logo for Newark Electronics
Newark Electronics
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Features

Overvoltage Protection up to 28 V
On-Chip Low RDS(on) NMOS Transistor: 65 m
Overvoltage Lockout (OVLO)
Undervoltage Lockout (UVLO)
Internal Soft start
Alert FLAG(BAR) Output
Shutdown EN(BAR) Input
Compliance to IEC61000-4-2 (Level 4), 8.0 kV (Contact), and 15 kV (Air)
ESD Ratings: Machine Model = B, Human Body Model = 3
This is a Pb-Free Device
Package DFN 1.6 x 2.0 mm
Applications
Cell Phones, Camera Phones, Digital Still Cameras, PDA, and MP3 Players

Specifications

Description NCP349, OVLO 5.68 V
Compliance Pb-free Halide free
VCC Min (V) 1.2
VCC Max (V) 28
P(AV) Max (W) 0.065
VIT+ Typ (V) 5.68
VIT Typ (V) 2.95
IDDH Max (µA) 0.25
TA Min (°C) -40
TA Max (°C) 85
Package Type DFN-6

Alternative Descriptions

IC PROT OV NCP349 DFN-6 | Kruse
NCP349MNAETBG, POSITIVE OVP | RS
NCP349MNAETBG, Voltage Supervisor, Maximum of 28 V, 6-Pin DFN | ON Semiconductor NCP349MNAETBG | RS Americas
PWM CONTROLLER, 28V, DFN-6 | Farnell
Positive Ovp/Reel |Onsemi NCP349MNAETBG | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP349MNAETBG?

Additional datasheets, footprints and schematics for NCP349MNAETBG are listed on our Part Details page. You can also find images and similar parts to NCP349MNAETBG on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP349MNAETBG on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP349MNAETBG price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP349MNAETBG fall under?

The NCP349MNAETBG is listed under Power Management > Protection > Voltage Protection.

Can I view similar or alternative parts?

You can view similar parts to NCP349MNAETBG when available in the Voltage Protection range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the NCP349MNAETBG you can contact the distributor directly for product support, shipping queries etc.

Is the NCP349MNAETBG RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for NCP349MNAETBG have stock available?

Authorised distributors including Kruse, RS, RS Americas, element14 and Farnell have stock available or on a lead time for NCP349MNAETBG.

How do I check stock and lead times for all distributors?

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