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Sell Uc3843an Electronic Component Ics - Hong Kong

price: contact company for price

Description: The UC3844BN is a high performance current mode pwm

controller. The UC3844BN provides the necessary features to implement

off-line or DC to DC fixed frequency current mode control schemes with a

minimal external parts count. Internally implemented circuits includea

trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lock out

featuring start - up current less than 0.5mA, a precision reference

trimmed for accuracy at the error ampinput, logic to insure latched

operation, a PWM comparator which also provides current limit control,

and a totem pole output stage designed to source or sink high peak

current. The out put stage, suitable for driving N-Channel MOSFETs, is

low in the offstate. The UC3844BN has UVLO thresholds of 16V (on) and

10V (off), ideally suited off-line applications.

Parametrics: UC3844BN absolute maximum ratings: (1)Supply Voltage (low impedance source), Vi: 30 V; (2)Supply Voltage (Ii < 30mA), Vi: Self Limiting; (3)Output Current, IO: ±1 A; (4)Output Energy (capacitive load), EO: 5 mJ; (5)Analog Inputs: -0.3 to 5.5 V; (6)Error Amplifier Output Sink Current: 10 mA; (7)Power Dissipation at Tamb ≤ 25 (Minidip), Ptot: 1.25 W; (8)Power Dissipation at Tamb ≤ 25 (SO8), Ptot: 800 mW; (9)Storage Temperature Range, Tstg: -65 to 150; (10)Junction Operating Temperature, TJ: -40 to 150; (11)Lead Temperature (soldering 10s), TL: 300.

]UC3844BN features: (1)trimmed oscillator for precise fre-quency control; (2)oscillator frequency guaranteed at 250kHz; (3)current mode operation to 500khz; (4)automatic feed forward compensa-tion; (5)latching pwm for cycle-by-cycle current limiting; (6)internally trimmed reference with undervoltage lockout; (7)high current totempoleoutput; (8)undervoltage lockout with hyster-esis; (9)low start-upandoperatingcurrent.

Contact Information

Company Name : Excellent Integrated System LIMITED (EIS)

Contact Person : Ella

EMAIL/MSN : sales009(at)eis-ic.com

Tel :00852-30777742

Add: RM 906, WORKINGBERG COMM BLDG, 41-47 MARBLE RD, HONGKONG

Website : eis-ic.com

Sell Uc3843an Electronic Component Ics

Please see our contact information below


Company Contact:


  • Phone: 85230777742

  • Address: RM 906, WORKINGBERG COMM BLDG, 41-47 MARBLE RD, HO, HONGKONG, Hong Kong

  • Email: Email


Published date: October 26, 2012 -

  • Business Description: Excellent Integrated System LIMITED (EIS LIMITED), Established in 1991, is a professional independent stocking distributor of electronic components and specialize in buying the EXCESS STOCK from the original equipment manufacturers (OEMs), Contract equipment manufacturers (CEMs), and many other factories. EIS has gained good experiences in Excess Inventory Management through its development over 20 years and has become the reliable partner for the domestic and foreign OEM manufacturers.

    EIS supply authentic active and passive components for Industry Resellers and Brokers since 1995 and give 90 360 days quality guarantee. Our OEM Excess Inventories enable us to offer Hard to Find & Obsolete Electronic Components throughout the world. We are the professional independent stocking distributor of XILINX, CYPRESS, ALTERA, ATMEL, JRC, MAXIM, NXP, HITACHI, RENESAS, NEC, IR, INFINEON, FREESCALE, MOTOROLA, PHILIPS, TEXAS INSTRUMENTS(TI), ANALOG DEVICES(ADI), NATIONAL SEMI(NS), ISSI, FAIRCHILD, SIEMENS, TOSHIBA, MITSUBISHI, MICRON, ST(SGS THOMSON), ON SEMI, WINBOND, VISHAY, POWER, LEANER TECH(LT), AVAGO, AGILENT, IXYS, INTERSIL, SAMSUNG, PANASONIC, SANYO, FUJISU, MICROCHIP, MICREL, MITSUMI, BROADCOM, ALLEGRO, AMD, ATI, NVIDIA, SONY, INTEL, SHINDENGEN, YAMAHA, ZETEX, ROHM, RAMTRON, QUALCOMM, PERICOM, SHARP, TOREX, OMRON, KEMET, OKI, RICOH, SEIKO, Richtek, SANKEN, AVX, TDK, EPSON, EPCOS and so on.

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