OB2216AP, OB22249, OB2262 Selling Leads, Datasheet
MFG:On-Brigh Package Cooled:DIP-8 D/C:2010
OB2216AP, OB22249, OB2262 Datasheet download
Part Number: OB2216AP
MFG: On-Brigh
Package Cooled: DIP-8
D/C: 2010
OB2216AP, OB22249, OB2262
- Table of contents:
Info of OB2216AP
Info of OB22249
Info of OB2262
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About OB2202
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Datasheet: OB2202
File Size: 109824 KB
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About OB2202
PDF/DataSheet Download
Datasheet: OB2202
File Size: 109824 KB
Manufacturer:
Download : Click here to Download
About OB2262
PDF/DataSheet Download
Datasheet: OB2262
File Size: 378936 KB
Manufacturer:
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OB2262 General Description
OB2262 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in sub 30W range.
PWM switching frequency at normal operation is externally programmable and trimmed to tight range.At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss.Lower standby power and higher conversion efficiency is thus achieved.
VDD low startup current and low operating current contribute to a reliable power on startup design with OB2262. A large value resistor could thus be used in the startup circuit to minimize the standby power. The internal slope compensation improves system large signal stability and reduces the possible subharmonic oscillation at high PWM duty cycle output.Leading-edge blanking on current sense(CS) input removes the signal glitch due to snubber circuit diode reverse recovery and thus greatly reduces the external component count and system cost in the design.
OB2262 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). The Gate-drive output is clamped to maximum 18V to protect the power MOSFET.Excellent EMI performance is achieved soft switching control at the totem pole gate drive output.
The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation.OB2262 is offered in SOT23-6, SOP-8 and DIP-8 packages
OB2262 Features
■ Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design
■ Audio Noise Free Operation
■ External Programmable PWM Switching Frequency
■ Internal Synchronized Slope Compensation
■ Low VDD Startup Current and Low Operating Current (1.4mA)
■ Leading Edge Blanking on Current Sense Input
■ Good Protection Coverage With Auto Self- Recovery
- VDD Over Voltage Clamp and Under Voltage Lockout with Hysteresis (UVLO)
- Gate Output Maximum Voltage Clamp (18V)
- On-Bright Proprietary Line Input Compensated Cycle-by-Cycle Over-current Threshold Setting For Constant Output Power Limiting Over Universal Input Voltage Range.
- Overload Protection (OLP).
OB2262 Typical Application
Offline AC/DC flyback converter for
■ Battery Charger
■ Power Adaptor
■ Set-Top Box Power Supplies
■ Open-frame SMPS
■ Battery Charger
■ Power Adaptor
■ Set-Top Box Power Supplies
■ Open-frame SMPS
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