UC3849Q

Mfr. #:: UC3849Q
説明:: IC SECONDARY SIDE CTRLR 28PLCC
ライフサイクル:: メーカー新製品
データシート:: UC3849Q データシート
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ECAD Model:
詳しくは:: UC3849Q 詳しくは UC3849Q Product Details

製品属性
属性値

メーカー: テキサスインスツルメンツ

製品カテゴリ: PMIC-電源コントローラー、モニター

シリーズ: -

包装: チューブ

パッケージ-ケース: 28-LCC (J-Lead)

作動温度: -40°C ~ 85°C

取付タイプ: 表面実装

アプリケーション: 二次側コントローラー

電圧供給: -

サプライヤー-デバイス-パッケージ: 28-PLCC (11.51x11.51)

電圧入力: 8 V ~ 20 V

電流供給: 21mA

Tags: UC3849, UC384, UC38, UC3

Service Guarantees

We guarantee 100% customer satisfaction.

Quality Guarantees

We provide 90-360 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.
Our experienced sales team and tech support team back our services to satisfy all our customers.

we buy and manage excess electronic components, including excess inventory identified for disposal.
Email us if you have excess stock to sell.

Email: [email protected]

Step1:
Vacuum Packaging with PL

Step2:
Anti-Static Bag

Step3:
Packaging Boxes

UC3849Q 説明

***et: Current Mode PWM Controller Average Secondary Side 1MHz 20V 0.3A 28-Pin PLCC

***ark: Pulse Width Modulation (PWM) Controller IC; Frequency:1000kHz; No. of Pins:28; Operating Temperature Range:0°C to +70°C; Leaded Process Compatible:No; Number of PWM Outputs:1; Output Current:250mA; Package/Case:28-PLCC ;RoHS Compliant: No

***as Instruments: The UC3849 family of average current-mode controllers accurately accomplishes secondary side average current mode control. The secondary-side output voltage is regulated by sensing the output voltage and differentially sensing the ac switching current. The sensed output voltage drives a voltage error amplifier. The ac switching current, monitored by a current sense resistor, drives a high bandwidth, low offset current sense amplifier. The outputs of the voltage error amplifier and current sense amplifier differentially drive a high bandwidth, integrating current error amplifier. The sawtooth waveform at the current error amplifier output is the amplified and inverted inductor current sensed through the resistor. This inductor current down-slope compared to the PWM ramp achieves slope compensation, which gives an accurate and inherent fast transient response to changes in load.The UC3849 features load share, oscillator synchronization, undervoltage lockout, and programmable output control. Multiple chip operation can be achieved by connecting up to ten UC3849 chips in parallel. The SHARE bus and CLKSYN bus provide load sharing and synchronization to the fastest oscillator respectively. The UC3849 is an ideal controller to achieve high power, secondary side average current mode control.

Market price

モデル	説明	ストック	価格
UC3849Q DISTI # UC3849Q-ND	IC SECONDARY SIDE CTRLR 28PLCC RoHS: Compliant Min Qty: 74 Container: Tube	Limited Supply - Call
UC3849QTR DISTI # UC3849QTR-ND	IC SECONDARY SIDE CTRLR 28PLCC RoHS: Compliant Min Qty: 750 Container: Tape & Reel (TR)	Limited Supply - Call
UC3849Q DISTI # 595-UC3849Q	Switching Controllers Sec Side Avg Current Mode RoHS: Not compliant	0
UC3849QTR DISTI # 595-UC3849QTR	Switching Controllers Sec Side Avg Current Mode RoHS: Not compliant	0
UC3849Q	Switching Controller, Current-mode, 0.3A, 1000kHz Switching Freq-Max, BIPolar, PQCC28 RoHS: Compliant	1924	1000:$4.0100 500:$4.2200 100:$4.4000 25:$4.5900 1:$4.9400
UC3849QTR	Switching Controller, Current-mode, 0.3A, 1000kHz Switching Freq-Max, BIPolar, PQCC28 RoHS: Compliant	1500	1000:$4.0100 500:$4.2200 100:$4.4000 25:$4.5900 1:$4.9400
UC3849Q	* FREE SHIPPING ORDERS OVER $100 * Swithed-Mode Power Supply Controller, Current Mode Type, Bi-Polar, 28 Pin, Plastic, PLCC	642	544:$3.3770 126:$3.6840 1:$9.2100
UC3849QTR	* FREE SHIPPING ORDERS OVER $100 * Swithed-Mode Power Supply Controller, Current Mode Type, Bi-Polar, 28 Pin, Plastic, PLCC	12181	1559:$1.8375 953:$1.9250 1:$5.2500
UC3849QTR	* FREE SHIPPING ORDERS OVER $100 * Swithed-Mode Power Supply Controller, Current Mode Type, Bi-Polar, 28 Pin, Plastic, PLCC	750	221:$2.1000 77:$2.2750 1:$5.2500

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