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OB2358L Datasheet Preview

OB2358L Datasheet

Current Mode PWM Power Switch

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OB2358L pdf
OB2358L
Current Mode PWM Power Switch Frequency Shuffling
Product Specification
GENERAL DESCRIPTION
OB2358L 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.
OB2358L offers complete protection coverage
with automatic self-recovery feature including
Cycle-by-Cycle current limiting (OCP), over load
protection (OLP), over temperature protection
(OTP), over voltage protection and VDD 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.
The tone energy at below 20KHZ is minimized in
the design and audio noise is eliminated during
operation.
OB2358L is offered in DIP8 package.
APPLICATIONS
Offline AC/DC flyback converter for
AC/DC adapter
PDA power supplies
Digital Cameras and Camcorder Adapter
VCR, SVR, STB, DVD&DVCD Player SMPS
Set-Top Box Power
Auxiliary Power Supply for PC and Server
Open-frame SMPS
TYPICAL APPLICATION
FEATURES
Power on Soft Start Reducing MOSFET Vds
Stress
Frequency shuffling for EMI
Extended Burst Mode Control For Improved
Efficiency and Minimum Standby Power
Design
Audio Noise Free Operation
Fixed 50KHZ Switching Frequency
Internal Synchronized Slope Compensation
Low VDD Startup Current and Low Operating
Current
Leading Edge Blanking on Current Sense
Input
Good Protection Coverage With Auto Self-
Recovery
o VDD Under Voltage Lockout with Hysteresis
(UVLO)
o Over Temperature Protection (OTP)
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).
o Over voltage Protection(OVP)
Output Power Table
Product
OB2358L
230VAC±15%
Open Frame1
27W
85-265VAC
Open Frame1
16W
Notes: 1. Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sink, at 50
ambient. Higher output power is possible with extra added heat sink or air circulation to reduce thermal resistance.
©On-Bright Electronics
Confidential
-1-
Datasheet
OB_DOC_DS_2358LA1



On-Bright Electronics
On-Bright Electronics

OB2358L Datasheet Preview

OB2358L Datasheet

Current Mode PWM Power Switch

No Preview Available !

OB2358L pdf
OB2358L
Current Mode PWM Power Switch Frequency Shuffling
GENERAL INFORMATION
Pin Configuration
The OB2358L is offered in DIP8 package as
shown below.
Ordering Information
Part Number Description
OB2358LAP DIP8, Pb-free
Package Dissipation Rating
Package
DIP8
RθJA (/W)
75
Note: Drain Pin Connected to 100mm2 PCB copper clad.
Absolute Maximum Ratings
Parameter
Drain Voltage (off state)
VDD Voltage
VDD-G Input Voltage
FB Input Voltage
Sense Input Voltage
Maximum Operating Junction
Temperature TJ
Min/Max
Storage
Temperature Tstg
Lead
Temperature
(Soldering, 10secs)
Value
-0.3V to BVdss
-0.3V to 30 V
-0.3V to 30 V
-0.3 to 7V
-0.3 to 7V
150
-55 to 150
260
Note: 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.
Marking Information
©On-Bright Electronics
Confidential
-2-
Datasheet
OB_DOC_DS_2358LA1


Part Number OB2358L
Description Current Mode PWM Power Switch
Maker On-Bright Electronics
Total Page 10 Pages
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