NCP1377BDR2G

Name: NCP1377BDR2G
Brand: Onsemi
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

Controller for Free Running Quasi-Resonant Current Mode

8,277 Effective Inventory

NCP1377BDR2G

Effective Inventory8,277

Controller for Free Running Quasi-Resonant Current Mode

Manufacturer Part # : NCP1377BDR2G
Package/Case: SOIC-8
Part Status : Obsolete
Brand: Onsemi
Product Categories : AC DC Converters, Offline Switches
Series : NCP1377

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NCP1377BDR2G DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$0.612	$0.61
10	$0.548	$5.48
30	$0.514	$15.42
100	$0.482	$48.20
500	$0.400	$200.00
1000	$0.389	$389.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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NCP1377BDR2G Details

The NCP1377BDR2G is a high-performance PWM controller from ON Semiconductor, designed for isolated power supply applications. It features a proprietary regulation method that allows for high efficiency and minimal standby power consumption. This versatile controller can operate in a wide input voltage range and is housed in a compact SOIC-8 package, making it suitable for various power supply designs.

Pinout

1 (VDD): Supply Voltage
2 (GND): Ground
3 (COMP): Compensation Node
4 (CS): Current Sense Input
5 (STR): Start-up Pin
6 (RT): Timing Resistor Connection
7 (OUT): Gate Output
8 (VREF): Reference Voltage Output

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

High Efficiency: Designed to achieve high efficiency in power conversion.
Wide Input Voltage Range: Operates effectively in a broad range of input voltages.
Minimal Standby Power: Low power consumption during standby conditions.
Compact Package: Housed in a small SOIC-8 package for space-saving design.
Robust Protection Features: Includes features such as overcurrent and thermal protection for reliable operation.

Application

Isolated Power Supplies: Ideal for creating isolated and efficient power supplies for various applications.
LED Drivers: Suitable for driving LED lighting systems requiring isolated power conversion.
Data Communication Equipment: Used in devices that require isolated power solutions for data transmission.

Where to Use

The NCP1377BDR2G is suitable for applications requiring isolated power conversion with high efficiency and low standby power. It is commonly used in power supplies for communication equipment, industrial control systems, and LED drivers.

How to Use

Connect the NCP1377BDR2G in your power supply circuit by ensuring correct connections to the VDD and GND pins for supply voltage. The OUT pin should be connected to the MOSFET gate for controlling the power switching, while the CS pin monitors current for feedback regulation. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the NCP1377BDR2G illustrates how to implement the PWM controller in an isolated power supply design. It shows connections for the power components, control pins, and feedback mechanisms to ensure efficient operation.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

LM5118: A comparable PWM controller offering similar features and performance from Texas Instruments.
TOPSwitch-GX: An alternative series of power controller ICs from Power Integrations that can be used in similar applications.

Complementary

The NCP1377BDR2G can be complemented by the NCP1342BDR2G, which provides additional features such as adjustable frequency switching and enhanced overload protection, suitable for more demanding power applications.

When selecting complementary controllers, ensure that their specifications align with your specific application needs for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the maximum input voltage for the NCP1377BDR2G?

A: The NCP1377BDR2G can operate with a maximum input voltage of up to 50V. For more details, refer to the datasheet for specific conditions and limitations.

Q: Can the NCP1377BDR2G be used in LED driver applications?

A: Yes, the NCP1377BDR2G is well-suited for LED driver applications, providing isolated power while achieving high efficiency and low standby power consumption.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Status	Last Shipments	Compliance	PbAHP
Package Type	SOIC-8	Case Outline	751-07
MSL Type	1	MSL Temp (°C)	260
Container Type	REEL	Container Qty.	2500
ON Target	N	Topology	Flyback
Control Mode	Current Mode	fsw Typ (kHz)	Variable
Stand-by Mode	Yes	UVLO (V)	Yes
Short Circuit Protection	No	Latch	Yes
Soft Start	Yes	VCC Max (V)	16
Drive Cap. (mA)	500 / 500	Pricing ($/Unit)	Price N/A

FAQs

What is NCP1377BDR2G?

The NCP1377BDR2G is a PWM controller IC (Integrated Circuit) designed by ON Semiconductor. It is specifically designed for low power offline flyback converters used in AC-DC power supplies, adapters, and chargers.

How Does NCP1377BDR2G Work?

The NCP1377BDR2G operates by regulating the output voltage of a flyback converter through pulse width modulation (PWM). It controls the switching of the power transistor to deliver a regulated DC output from an AC input source, providing efficient power conversion.

How Many Pins does NCP1377BDR2G have and What are the Functions of the Pinout Configuration?

The NCP1377BDR2G is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

VCC: Power supply pin.
VFB: Feedback pin for output voltage regulation.
COMP: Compensation pin for loop stability.
CS: Current sense pin for setting peak current limit.
DRV: Gate driver output pin for external MOSFET.
GND: Ground pin.
SENSE: Sense pin for voltage feedback.
RT/CT: Pin for setting oscillator frequency.

What are the Pros and Cons of NCP1377BDR2G?

Pros:

Efficiency: Provides efficient power conversion suitable for low power applications.
Compact: Small package size (SOIC-8) for space-constrained designs.
Flexible Design: Supports various flyback converter designs with adjustable parameters.
Integrated Features: Includes built-in protection features such as overcurrent and overvoltage protection.

Cons:

Application Specific: Designed specifically for low power flyback converters, may not be suitable for higher power applications.
External Components: Requires external components such as MOSFETs and passive components for operation.

Are There Any Equivalents/Alternatives to NCP1377BDR2G for Recommendation?

The UC3842 from Texas Instruments is a comparable PWM controller IC often used in offline flyback converters.
Alternatives to the NCP1377BDR2G include the FAN7529 from Fairchild Semiconductor and the L6561 from STMicroelectronics.