http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf





On-Bright
On-Bright

OB2263 Datasheet Preview

OB2263 Datasheet

Current Mode PWM Controller

No Preview Available !

OB2263 pdf
OB2263
www.DataSheet4U.com
Current Mode PWM ControllerFrequency Shuffling
GENERAL DESCRIPTION
OB2263 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
OB2263. 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 sub-
harmonic 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.
OB2263 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 with On-
Bright proprietary frequency shuffling technique
together with soft switching control at the totem pole
gate drive output.
Tone energy at below 20KHZ is minimized in the
design and audio noise is eliminated during operation.
OB2263 is offered in SOT23-6, SOP-8 and DIP-8
packages.
FEATURES
On-Bright Proprietary Frequency Shuffling
Technology for Improved EMI Performance.
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
o VDD Over Voltage Clamp and Under Voltage
Lockout with Hysteresis (UVLO)
o Gate Output Maximum Voltage Clamp (18V)
o On-Bright Proprietary Line Input Compensated
Cycle-by-Cycle Over-current Threshold Setting
For Constant Output Power Limiting Over
Universal Input Voltage Range.
o Overload Protection (OLP)
APPLICATIONS
Offline AC/DC flyback converter for
Battery Charger
Power Adaptor
Set-Top Box Power Supplies
Open-frame SMPS
TYPICAL APPLICATION
©On-Bright Electronics
Confidential to Micro Bridge
-1-
OB_DOC_DS_63B5



On-Bright
On-Bright

OB2263 Datasheet Preview

OB2263 Datasheet

Current Mode PWM Controller

No Preview Available !

OB2263 pdf
www.DataSheet4U.com
OB2263
Current Mode PWM ControllerFrequency Shuffling
GENERAL INFORMATION
Pin Configuration
The OB2263 is offered in SOT23-6, DIP8 and SOP8
packages, shown as below.
Ordering Information
Part Number
Description
OB2263MP
SOT23-6, Pb-free
OB2263AP
DIP8, Pb-free
OB2263CP
SOP8, Pb-free
Package Dissipation Rating
Package
RθJA
DIP8
(°C/W)
90
SOP8
150
SOT23-6
200
Absolute Maximum Ratings
Parameter
Value
VDD DC Supply Voltage 30 V
VDD Zener Clamp
VoltageNote
VDD_Clamp+0.1V
VDD DC Clamp Current 10 mA
VFB Input Voltage
VSENSE Input Voltage to
Sense Pin
-0.3 to 7V
-0.3 to 7V
VRI Input Voltage to RI Pin -0.3 to 7V
Min/Max Operating
-20 to 150 oC
Junction Temperature TJ
Min/Max Storage
-55 to 160 oC
Temperature Tstg
Note: VDD_Clamp has a nominal value of 34V.
Stresses beyond those listed under “absolute maximum ratings”
may cause permanent damage to the device. These are stress
ratings only, functional operation of the device at these or any
other conditions beyond those indicated under “recommended
operating conditions” is not implied. Exposure to absolute
maximum-rated conditions for extended periods may affect device
reliability.
©On-Bright Electronics
Confidential to Micro Bridge
- 2 - OB_DOC_DS_63B5


Part Number OB2263
Description Current Mode PWM Controller
Maker On-Bright
Total Page 13 Pages
PDF Download
OB2263 pdf
Download PDF File
OB2263 pdf
View for Mobile






Related Datasheet

1 OB2262 Current Mode PWM Controller On-Bright
On-Bright
OB2262 pdf
2 OB2262 15W Adapter Module Design On-Bright
On-Bright
OB2262 pdf
3 OB2263 Current Mode PWM Controller On-Bright
On-Bright
OB2263 pdf
4 OB2268 (OB2268 / OB2269) Current Mode PWM Controller Liteon
Liteon
OB2268 pdf
5 OB2268 Flyback switching power supply applications On-Bright Electronics
On-Bright Electronics
OB2268 pdf
6 OB2269 (OB2268 / OB2269) Current Mode PWM Controller Liteon
Liteon
OB2269 pdf
7 OB2269 Flyback switching power supply applications On-Bright Electronics
On-Bright Electronics
OB2269 pdf
8 OB2269C Current Mode PWM Controller On-Bright Electronics
On-Bright Electronics
OB2269C pdf




Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components