|
|
Teilenummer | OB2223F |
|
Beschreibung | High Precision Low Cost MCM Power Switch | |
Hersteller | On-Bright Electronics | |
Logo | ||
Gesamt 11 Seiten OB2223F
High Precision Low Cost MCM Power Switch
GENERAL DESCRIPTION
OB2223F is a high performance, high precision
and low cost PWM Power switch for non-isolated
buck and flyback application. It combines a
dedicated current mode PWM controller (with a
high voltage power MOSFET with SOP8/DIP7
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.
OB2223F 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.
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
OB2223F is offered in SOP8/DIP7 package.
AC IN
OB2223F
1 VDD
GND 8
2 COMP GND* 7
3 ENB DRAIN 6
4 CS
DRAIN 5
Note : GND* Only in SOP8 package
©On-Bright Electronics
Confidential
-1-
DC
OUT
Preliminary Datasheet
OB_DOC_DS_2223F00
OB2223F
High Precision Low Cost MCM Power Switch
Vth_OLP
Over loading protection
Debounce Time
Frequency=30Khz
OTP
Exit Over temperature
protection
Enter Over temperature
protection
Power MOSFET Section
BVdss
MOSFET
Drain-Source
Breakdown Voltage
Rdson
On Resistance(DIP7)
On Resistance(SOP8)
Static, Id=0.45A
Static, Id=0.45A
3.6
110 118 126
105
135
V
mS
℃
℃
600 V
15 Ώ
25 Ώ
©On-Bright Electronics
Confidential
-6-
Preliminary Datasheet
OB_DOC_DS_2223F00
6 Page | ||
Seiten | Gesamt 11 Seiten | |
PDF Download | [ OB2223F Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
OB2223F | High Precision Low Cost MCM Power Switch | On-Bright Electronics |
Teilenummer | Beschreibung | Hersteller |
CD40175BC | Hex D-Type Flip-Flop / Quad D-Type Flip-Flop. |
Fairchild Semiconductor |
KTD1146 | EPITAXIAL PLANAR NPN TRANSISTOR. |
KEC |
www.Datenblatt-PDF.com | 2020 | Kontakt | Suche |