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NCP1252ADR2G Integrated Circuit Chip Current Mode PWM Controller

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NCP1252ADR2G Integrated Circuit Chip Current Mode PWM Controller

: Large Image : NCP1252ADR2G Integrated Circuit Chip Current Mode PWM Controller

Product Details:

Place of Origin:	original factory
Brand Name:	Anterwell
Certification:	new & original
Model Number:	NCP1252ADR2G

Payment & Shipping Terms:

Minimum Order Quantity:	10pcs
Price:	Negotiate
Packaging Details:	Please contact me for details
Delivery Time:	1 day
Payment Terms:	T/T, Western Union, Paypal
Supply Ability:	9200pcs

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Detailed Product Description

Power Supply Voltage, Vcc Pin, Continuous Voltage:	28 V	Maximum Current Injected Into Pin 7:	20 MA
Maximum Voltage On Low Power Pins (except Pin 6, 7):	−0.3 To 10 V	Thermal Resistance Junction−to−Air – SO8:	180 °C/W
Maximum Junction Temperature:	150 °C	Storage Temperature:	−60 To +150 °C
Highlight:	electronics ic chip , integrated circuit components

NCP1252

Current Mode PWM Controller for Forward and Flyback Applications

The NCP1252 controller offers everything needed to build cost− effective and reliable ac−dc switching supplies dedicated to ATX power supplies. Thanks to the use of an internally fixed timer, NCP1252 detects an output overload without relying on the auxiliary Vcc. A Brown−Out input offers protection against low input voltages and improves the converter safety. Finally a SOIC8 package saves PCB space and represents a solution of choice in cost sensitive project.

Features

• Peak Current Mode Control

• Adjustable Switching Frequency up to 500 kHz

• Jittering Frequency ±5% of the Switching Frequency

• Latched Primary Over Current Protection with 10 ms Fixed Delay

• Delayed Operation Upon Start−up via an Internal Fixed Timer

• Adjustable Soft−start Timer

• Auto−recovery Brown−Out Detection

• UC384X−like UVLO Thresholds

• Vcc Range from 9 V to 28 V with Auto−recovery UVLO

• Internal 160 ns Leading Edge Blanking

• Adjustable Internal Ramp Compensation

• +500 mA / –800 mA Source / Sink Capability

• Maximum 50% Duty Cycle: A Version

• Maximum 80% Duty Cycle: B Version

• Ready for Updated No Load Regulation Specifications

• SOIC−8 Package

• This is a Pb−Free Device

Typical Applications

• Power Supplies for PC Silver Boxes, Games Adapter...

• Flyback and Forward Converter

NCP1252ADR2G Integrated Circuit Chip Current Mode PWM Controller

MAXIMUM RATINGS TABLE (Notes 1 and 2)

Symbol	Rating	Value	Unit
V_CC	Power Supply voltage, Vcc pin, transient voltage: 10 ms with I_Vcc < 20 mA	30	V
V_CC	Power Supply voltage, Vcc pin, continuous voltage	28	V
I_Vcc	Maximum current injected into pin 7	20	mA
	Maximum voltage on low power pins (except pin 6, 7)	−0.3 to 10	V
R_θJ−A – SO	Thermal Resistance Junction−to−Air – SO8	180	°C/W
T_JMAX	Maximum Junction Temperature	150	°C
	Storage Temperature Range	−60 to +150	°C
	ESD Capability, HBM model	1.8	kV
	ESD Capability, Machine Model	200	V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.

1. This device series contains ESD protection and exceeds the following tests: Human Body Model 1800 V per JEDEC Standard JESD22−A114E. Machine Model Method 200 V per JEDEC Standard JESD22−A115A.

2. This device contains latch−up protection and exceeds 100 mA per JEDEC Standard JESD78.

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