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OB2223 Datasheet Preview

OB2223 Datasheet

High Precision Low Cost MCM Power Switch

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OB2223
High Precision Low Cost MCM Power Switch
GENERAL DESCRIPTION
OB2223 is a high performance, high precision and
low cost PWM Power switch for Non-isolated
buck/ buck-boost and flyback application. It
combines a dedicated current mode PWM
controller (with a high voltage power MOSFET
with SOP8/DIP8 package) and built-in error
amplifier optimized for good overshoot and
dynamic response for low cost and component
count. With precise inner resistor divider, precise
reference of EA accurate constant voltage
regulation 12V at universal AC input can be
guaranteed. For high efficiency, oscillator with
frequency-reduction and burst mode control is
implemented. And EMI performance is achieved
with On-Bright proprietary frequency shuffling
technique and soft gate driver design.
OB2223 offers power on soft start control and
protection coverage with auto-recovery features
including Cycle-by-Cycle current limiting, Over
Loading Protection, Output Short-Circuit
Protection, On-Chip OTP,VDD OVP, and UVLO.
OB2223 is offered in SOP8/DIP8 package
TYPICAL APPLICATION
FEATURES
Low cost and component count buck
application
Current Mode Control
Multiple mode control with good dynamic
response
Oscillator of fixed maximum switching
frequency with frequency-reduction and burst
mode control for high efficiency
Frequency shuffling for EMI improvement
Power on Soft-start
Built-in Leading Edge Blanking (LEB)
Cycle-by-Cycle Current Limiting
Over Loading Protection
Output Short-Circuit Protection
VDD Under Voltage Lockout with Hysteresis
(UVLO)
VDD OVP
On-Chip OTP
APPLICATIONS
Low Power AC/DC offline SMPS for
Electrical Appliance
Linear Regulator/RCC Replacement
.
AC IN
VDD
GND
COMP GND
ENB DRAIN
CS DRAIN
DC
OUT
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
TEL0755-82584090




On-Bright Electronics

OB2223 Datasheet Preview

OB2223 Datasheet

High Precision Low Cost MCM Power Switch

No Preview Available !

GENERAL INFORMATION
Pin Configuration
The pin map is shown as below for DIP8
VDD 1
8 GND
COMP 2
7 GND
ENB
3
6 DRAIN
CS 4
5 DRAIN
Ordering Information
Part Number
Description
OB2223CP
SOP8, Pb-free, Tube
OB2223CPA
SOP8, Pb-free, T&R
OB2223AP
DIP8, Pb-free, Tube
OB2223
High Precision Low Cost MCM Power Switch
Package Dissipation Rating
Package
RθJA (/W)
SOP8
90
DIP8
75
Note: Drain Pin Connected 100mm2 PCB copper
clad.
Absolute Maximum Ratings
Parameter
Value
Drain Voltage (off state)
-0.3V to Bvdss
VDD Voltage
-0.3 to 40V
VDD Zener Clamp
Continuous Current
10 mA
COMP Voltage
-0.3 to 7V
CS Input Voltage
-0.3 to 7V
ENB Voltage
-0.3 to 7V
Min/Max Operating
Junction Temperature TJ
Min/Max Storage
Temperature Tstg
Lead Temperature
(Soldering, 10secs)
-40 to 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.
©On-Bright Electronics
Confidential
-2-
Preliminary Datasheet
TEL0755-82584090


Part Number OB2223
Description High Precision Low Cost MCM Power Switch
Maker On-Bright Electronics
Total Page 11 Pages
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