OB2502中文資料昂寶電子數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)
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GENERAL DESCRIPTION
OB2502x is a high performance offline PSR power
switch for low power AC/DC charger and adapter
applications. It operates in primary-side sensing
and regulation. Consequently, opto-coupler and
TL431 could be eliminated. Proprietary Constant
Voltage (CV) and Constant Current (CC) control is
integrated as shown in the figure below.
In CC control, the current and output power setting
can be adjusted externally by the sense resistor
Rs at CS pin. In CV control, multi-mode operations
are utilized to achieve high performance and high
efficiency. In addition, good load regulation is
achieved by the built-in cable drop compensation.
Device operates in PFM in CC mode at large load
condition and it operates in PWM with frequency
reduction at light/medium load. The chip
consumes very low operation current. It achieves
less than 75mW standby power to meet strict
standby power standard.
OB2502x offers comprehensive protection
coverage with auto-recovery feature including
Cycle-by-Cycle current limiting, VDD over voltage
protection, feedback loop open protection, short
circuit protection, built-in leading edge blanking,
VDD under voltage lockout (UVLO), OTP etc.
OB2502x is offered in SOP8 packages.
FEATURES
? Primary-side sensing and regulation without
TL431 and opto-coupler
? High precision constant voltage and current
regulation at universal AC input
? Multi-mode PWM/PFM operation for efficiency
improving
? Integrated 2A/3A MOSFET
? Good dynamic response with synchronous
rectifier application
? Programmable CV and CC regulation
? Built-in primary winding inductance
compensation
? Programmable cable drop compensation
? No need for control loop compensation
? Audio noise free operation
? Built-in leading edge blanking (LEB)
? Ultra low start-up current and low operating
current
? Comprehensive protection coverage with
auto-recovery
? On-chip OTP
? VDD over voltage protection
? VDD under voltage lockout with
hysteresis (UVLO)
? Cycle-by-Cycle current limiting
? Feedback loop open protection
? Output short circuit protection
APPLICATIONS
Low Power AC/DC offline SMPS for
? Cell Phone Charger
? Digital Cameras Charger
? Small Power Adapter
? Auxiliary Power for PC, TV etc.
? Linear Regulator/RCC Replacement
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
OB(昂寶) |
23+ |
SOP8 |
7350 |
現(xiàn)貨供應(yīng),當(dāng)天可交貨!免費(fèi)送樣,原廠技術(shù)支持!!! |
詢(xún)價(jià) | ||
ON-BRIGHT/昂寶 |
23+ |
NA/ |
322 |
優(yōu)勢(shì)代理渠道,原裝正品,可全系列訂貨開(kāi)增值稅票 |
詢(xún)價(jià) | ||
OB |
2020+ |
SOP8 |
15000 |
只做自己庫(kù)存,全新原裝進(jìn)口正品假一賠百,可開(kāi)13%增 |
詢(xún)價(jià) | ||
ON-BRIGHT/昂寶 |
2023+ |
SOP-8 |
8635 |
一級(jí)代理優(yōu)勢(shì)現(xiàn)貨,全新正品直營(yíng)店 |
詢(xún)價(jià) | ||
ON/安森美 |
22+23+ |
SOP-8 |
8000 |
新到現(xiàn)貨，只做原裝進(jìn)口 |
詢(xún)價(jià) | ||
ON-BRIGHT/昂寶 |
24+ |
SOP-8 |
96880 |
只做原裝,歡迎來(lái)電資詢(xún) |
詢(xún)價(jià) | ||
ON-BRIGHT/昂寶 |
1926+ |
SOP |
6852 |
只做原裝正品現(xiàn)貨!或訂貨假一賠十! |
詢(xún)價(jià) | ||
ON-BRIGHT |
SOP8 |
893993 |
集團(tuán)化配單-有更多數(shù)量-免費(fèi)送樣-原包裝正品現(xiàn)貨-正規(guī) |
詢(xún)價(jià) | |||
OB(昂寶) |
1932+ |
SOP-8_150mil |
2789 |
向鴻優(yōu)勢(shì)倉(cāng)庫(kù)庫(kù)存-絕對(duì)原裝正品-不做假貨! |
詢(xún)價(jià) | ||
ON-BRIGHT/昂寶 |
589220 |
16余年資質(zhì) 絕對(duì)原盒原盤(pán) 更多數(shù)量 |
詢(xún)價(jià) |
