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DH321 Datasheet PDF – Green Mode Fairchild Power Switch

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Part Number: DH321

Function: Green Mode Fairchild Power Switch (FPS)

Package: DIP, SO 8 Pin Type

Manufacturer: Fairchild Semiconductor

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DH321 fairchild switch

Description

The DH321, FSDx321(x stands for H, L) are integrated Pulse Width Modulators (PWM) and Sense FETs specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

 

Pinouts:
DH321 pinouts

Features

• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with Advanced Burst-Mode Operation
• Frequency Modulation for low EMI
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse by Pulse Current Limiting
• Abnormal Over Current Protection
• Over Voltage Protection
• Over Load Protection
• Internal Thermal Shutdown Function
• Auto-Restart Mode
• Under Voltage Lockout
• Low Operating Current (max 3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start

 

 

DH321 Ordering Information

Both devices are integrated high voltage power switching regulators which combine an avalanche rugged Sense FET with a current mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), optimized gate turn-on/turn-off driver, Thermal Shut Down (TSD) protection, Abnormal Over Current Protection (AOCP) and temperature compensated precision current sources for loop compensation and fault protection circuitry.

 

Block Diagram

DH321 Datasheet

DH321 Datasheet PDF Download


DH321 pdf

Other data sheets are available within the file: DH-321, DL321, FSDH321, FSDH321L, FSDL321

MRY1518B Datasheet – CMOS MR Magnetic Sensor Switch

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Part Number: MRY1518B

Function: High sensitivity CMOS MR Magnetic Sensor Switch

Package: SOT-23 Type

Manufacturer: AnaSem Semiconductors

Pinouts:

MRY1518B datasheet

 

Description

MRY1518B series are monolithic ICs with built-in MRmagnet resistive element and CMOS switch. It becomes the non-contactswitch with low current  consumption,  high  sensitivity  and  reliability  which  is  combined with magnet.

A horizontal magnetic field parallel to the electrode of the package can be detected by an arbitrary polarity. (N pole  ⇔ S pole)

Features

• CMOS + MR monolithic structure

• Low current consumption : 21µA (VIN=1.8V, Ta=25°C)

• High-sensitivity : Typ. 1.5mT

• Operating voltage range : 1.6V ~ 6.0V

• Detection pulse driving cycle : Typ. 1.3msec with 10µsec width

• Magnetic direction : Both direction / CMOS inverter one output

Applications:

• Detection of position : Air cylinder, Antitheft window, Digital door lock, etc.

• Detection of water level : Water purifier, Humidifier, Bidet, etc.

• Detection of rotation : Water meter, Gas meter, Wattmeter, Speed meter, etc.

• Power supply switch : Cordless phone, Electric toothbrush, etc.

MRY1518B Datasheet PDF Download


MRY1518B pdf

Other data sheets are available within the file: MRY1518, MRY1518BTA