DataSheet.jp

OB2269C データシート PDF ( 特性, スペック, ピン接続図 )

部品番号 OB2269C
部品説明 Current Mode PWM Controller
メーカ On-Bright Electronics
ロゴ On-Bright Electronics ロゴ 

Total 13 pages
		

No Preview Available !

OB2269C Datasheet, OB2269C PDF,ピン配置, 機能
OB2269C
GENERAL DESCRIPTION
OB2269C is a highly integrated current mode PWM
control IC optimized for high performance, low
standby power and cost effective offline flyback
converter applications.
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
OB2269C. 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 input
removes the signal glitch due to snubber circuit diode
reverse recovery. This greatly helps to reduce the
external component count and system cost in
application.
OB2269C offers complete protection coverage with
automatic self-recovery feature including Cycle-by-
Cycle current limiting (OCP), over load protection
(OLP), over temperature protection (OTP), VDD
over voltage protection (OVP) and under voltage
lockout (UVLO). The Gate-drive output is clamped
at 18V to protect the power MOSFET.
In OB2269C, OCP threshold slope is internally
optimized to reach constant output power limit over
universal AC input range.
Excellent EMI performance is achieved with On-
Bright proprietary frequency shuffling technique
together with soft switching control at the totem pole
gate drive output.
TYPICAL APPLICATION
Frequency Shuffling
The tone energy at below 20KHZ is minimized in
operation. Consequently, audio noise performance is
greatly improved.
OB2269C is offered in both 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 VIN/VDD Startup Current(6.5uA) and Low
Operating Current (2.3mA)
Leading Edge Blanking on Current Sense Input
Complete Protection Coverage With Auto Self-
Recovery
o External Programmable Over Temperature
Protection (OTP)
o With or Without On-chip VDD OVP for
System OVP
o Under Voltage Lockout with Hysteresis
(UVLO)
o Gate Output Maximum Voltage Clamp (18V)
o Line Compensated Cycle-by-Cycle Over-
current Threshold Setting For Constant Output
Current Limiting Over Universal Input Voltage
Range (OCP)
o Over Load Protection. (OLP)
APPLICATIONS
Offline AC/DC flyback converter for
PC/TV/Set-Top Box Power Supplies
Open-frame SMPS
Battery Charger
©On-Bright Electronics
-1-
Confidential
OB_DOC_DS_69CC1

1 Page





ページ 合計 : 13 ページ
PDF
ダウンロード
[ OB2269C.PDF ]

共有リンク

Link :

おすすめデータシート

部品番号部品説明メーカ
OB2269

There is a function of (OB2268 / OB2269) Current Mode PWM Controller.

Liteon
Liteon
OB2269

There is a function of Flyback switching power supply applications.

On-Bright Electronics
On-Bright Electronics
OB2269C

There is a function of Current Mode PWM Controller.

On-Bright Electronics
On-Bright Electronics

多くを見つけるデータシート

部品番号部品説明メーカ
82S129

The 82S126 and 82S129 are field programmable, which means that custom patterns are immediately available by following the Signetics Generic fusing procedure. 1K-bit TTL Bipolar PROM, Address access time : 50ns max.

NXP
NXP
D1695

This part is a darlington connection NPN silicon epitaxial transistor. The 2SD1695 is a Darlington connection transistor and incorporates a dumper diode between the collector and emitter and a constant voltage diode and protection elements between the collector and base. This transistor is ideal for drives in solenoid and actuators.

NEC
NEC

www.DataSheet.jp    |   2018   |  メール    |   最新    |   Sitemap