OB2358 Datasheet PDF – Current Mode PWM Power Switch

Part Number : OB2358, OB2358AP

Function : Current Mode PWM Power Switch

Package :  DIP 8 Pin type

Manufacturers : On-Bright Electronics





The OB2358 combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is optimized for high performance, low standby power, and cost effective off-line flyback converter applications in sub 27W range. OB2358 offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique together with soft switching control at the totem pole gate drive output.






1. Power on Soft Start Reducing MOSFET Vds Stress
2. Frequency shuffling for EMI
3. Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design
4. Audio Noise Free Operation
5. Fixed 50KHZ Switching Frequency
6. Internal Synchronized Slope Compensation
7. Low VDD Startup Current and Low Operating Current

Application Circuit


Applications :

1. Offline AC/DC flyback converter

2. AC/DC adaptor

3. PDA power supplies

4. Digital Cameras and Camcorder Adaptor

OB2358 Datasheet

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5MO2659R Datasheet – Power Switch – Fairchild

Part Number : 5MO2659R, Correct PN : 5M02659R

Function : Fairchild Power Switch(FPS)

Package : DIP 8 Pin Type

Manufacturers : Fairchild Semiconductor

Image :
5MO2659R power switch

Description :

The Fairchild Power Switch(FPS) product family is specially designed for an off-line SMPS with minimal external components. The Fairchild Power Switch(FPS) consist of high voltage power SenseFET and current mode PWM IC. Included PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/ turn-off driver, thermal shut down protection, over voltage protection, and temperature compensated precision current sources for loop compensation and fault protection circuitrycompared to discrete MOSFET and controller or RCC switching converter solution.


5MO2659R datasheet pinout

Features :

• Precision Fixed Operating Frequency (100/67/50kHz)
• Low Start-up Current (Typ. 100uA)
• Pulse by Pulse Current Limiting
• Over Load Protection
• Over Voltage Protection (Min. 25V)
• Internal Thermal Shutdown Function
• Under Voltage Lockout
• Internal High Voltage Sense FET
• Auto-Restart Mode

5MO2659R Datasheet PDF


5MO2659R pdf


Other data sheets within the file : 5H02659RN, 5H0265RC, 5H0280R, 5L0265R, 5M02659R

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