This is a kind of the PWM Controller.
Part Number: OB2273
Function: High Performance Current Mode PWM Controller
Package: SOT23-6 Type
Manufacturer: On-Bright
Image and Pinouts:
Description
The OB2273 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications.It offers complete protection coverage with auto-recovery including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), and VDD under voltage lockout (UVLO). It also provides the protections with latched shut down including over temperature protection (OTP), and over voltage (fixed or adjustable) protection (OVP).
Features
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 65KHZ Switching Frequency
6. Comprehensive Protection Coverage
Ordering Information and application circuits
Applications
1. Battery Charger
2. Power Adaptor
3. Set-Top Box Power Supplies
4. Open-frame SMPS
Other data sheets are available within the file: OB2273AP, OB2273MP
OB2273 Datasheet PDF
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General
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