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OB5269 Datasheet Preview

OB5269 Datasheet

High Voltage Green Mode PWM Controller

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OB5269
High Voltage Green Mode PWM Controller
GENERAL DESCRIPTION
FEATURES
OB5269 is a highly integrated current mode PWM High Voltage Startup
control IC with high voltage start up, optimized for Power on Soft Start Reducing MOSFET Vds
high performance, low standby power
Stress
consumption and cost effective offline flyback
converter applications.
PWM switching frequency at normal operation is
internally fixed and is trimmed to a tight range. At
no load or light load condition, the IC operates in
extended ‘burst mode’ to minimize switching loss.
Very low standby power consumption and very
high conversion efficiency is thus achieved.
Ktec Frequency shuffling for EMI
Extended Burst Mode Control For Improved
Efficiency and Minimum Standby Power
Audio Noise Free Operation
Fixed 65KHZ Switching Frequency
Comprehensive Protection Coverage
o VDD Under Voltage Lockout with
Hysteresis (UVLO)
High voltage startup is implemented in OB5269,
which features with short startup time and low
standby current.
to OB5269 offers complete protection coverage with
auto-recovery including Cycle-by-Cycle current
l limiting (OCP), over load protection (OLP), and
VDD under voltage lockout (UVLO). It also
tia provides the protections with latched shut down
including over temperature protection (OTP), and
over voltage (fixed or adjustable) protection (OVP).
Excellent EMI performance is achieved with On-
n Bright proprietary frequency shuffling technique.
The tone energy at below 22KHZ is minimized to
e avoid audio noise during operation.
fid OB5269 is offered in SOP8 package.
o Cycle-by-cycle over current protection
(OCP)
o Overload Protection (OLP) with auto-
recovery
o Over Temperature Protection (OTP) with
latch shut down
o VDD Over voltage Protection(OVP) with
latch shut down
o Adjustable OVP through external Zener
APPLICATIONS
Offline AC/DC flyback converter for
Battery Charger
Power Adaptor
Open-frame SMPS
On-Bright Con TYPICAL APPLICATION
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_526902




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OB5269 Datasheet Preview

OB5269 Datasheet

High Voltage Green Mode PWM Controller

No Preview Available !

OB5269
High Voltage Green Mode PWM Controller
GENERAL INFORMATION
Absolute Maximum Ratings
Pin Configuration
Parameter
Value
The OB5269 is offered in SOP8 package, shown
VDD DC Supply Voltage 30V
as below.
High-Voltage Pin, HV
-0.3 to 500 V
RT
FB
CS
GND
1
8
2
7
OB5269
3
6
4
5
HV
NC
VDD
GATE
VDD Zener Clamp
VoltageNote
VDD DC Clamp Current
FB Input Voltage
CS Input Voltage
RT Input Voltage
Min/Max Operating
Junction Temperature TJ
Ktec VDD_Clamp+0.1V
10 mA
-0.3 to 7V
-0.3 to 7V
-0.3 to 7V
-40 to 150
to Ordering Information
Part Number
Description
l OB5269CP
SOP8, Pb-free
OB5269CPA
SOP8, Pb-free in Taping
tia Package Dissipation Rating
n Package
RθJA(/W)
SOP8
150
Min/Max Storage
Temperature Tstg
-55 to 160
Lead
Temperature
(Soldering, 10secs)
260
Note: VDD_Clamp has a nominal value of 32V.
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.
nfide OB5269 X
X
X
Co Current Mode PWM Controller with HV
On-Bright Startup
Package
C:SOP8
Package Pb free
P:lead-free
Packing
Blank:Tube
A:Taping
©On-Bright Electronics
Confidential
-2-
Preliminary Datasheet
OB_DOC_DS_526902


Part Number OB5269
Description High Voltage Green Mode PWM Controller
Maker On-Bright
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OB5269 Datasheet PDF






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