Anterwell Technology Ltd.

          Anterwell Technology Ltd.

 

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UC2844BD1R2G Electronic IC Chips HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Good quality Programmable IC Chips for sales
Good quality Programmable IC Chips for sales
We have cooperate with Anterwell near 7 years. always very good quality good service. Original and very fast delivery. A very good partner.

—— Clemente From Brzail

I'm doing business with Anterwell from 2006, from small to big orders. Reliable!

—— Ingalill From Sweden

Sharon is a very good girl, we are very happy to cooperate with her. Competitive price and professional. Never have quality problem with them.

—— Alfredo From USA

We always buy XILINX parts from Anterwell. High quality with good price. Hope can have more business with you.

—— Mr Babak From Iran

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UC2844BD1R2G Electronic IC Chips HIGH PERFORMANCE CURRENT MODE CONTROLLERS

China UC2844BD1R2G Electronic IC Chips HIGH PERFORMANCE CURRENT MODE CONTROLLERS supplier

Large Image :  UC2844BD1R2G Electronic IC Chips HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Product Details:

Place of Origin: original factory
Brand Name: Anterwell
Certification: new & original
Model Number: UC2844BD1R2G

Payment & Shipping Terms:

Minimum Order Quantity: 20 pcs
Price: Negotiate
Packaging Details: Please contact me for details
Delivery Time: 1 day
Payment Terms: T/T, Western Union, Paypal
Supply Ability: 8000 pcs
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Detailed Product Description
Total Power Supply And Zener Current: 30 MA Output Current, Source Or Sink: 1.0 A
Output Energy (Capacitive Load Per Cycle): 5.0 μJ Current Sense And Voltage Feedback Inputs: − 0.3 To + 5.5 V
Error Amp Output Sink Current: 10 MA Operating Junction Temperature: +150 °C
High Light:

electronic integrated circuit

,

linear integrated circuits

 

UC3844B, UC3845B, UC2844B, UC2845B

High Performance Current Mode Controllers

 

The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and dc−dc converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

 

Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, a latch for single pulse metering, and a flip−flop which blanks the output off every other oscillator cycle, allowing output deadtimes to be programmed from 50% to 70%.

 

These devices are available in an 8−pin dual−in−line and surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage.

 

The UCX844B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX845B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).

 

Features

• Pb−Free Packages are Available

• Trimmed Oscillator for Precise Frequency Control

• Oscillator Frequency Guaranteed at 250 kHz

• Current Mode Operation to 500 kHz Output Switching Frequency

• Output Deadtime Adjustable from 50% to 70%

• Automatic Feed Forward Compensation

• Latching PWM for Cycle−By−Cycle Current Limiting

• Internally Trimmed Reference with Undervoltage Lockout

• High Current Totem Pole Output

• Undervoltage Lockout with Hysteresis

• Low Startup and Operating Current

 

UC2844BD1R2G Electronic IC Chips HIGH PERFORMANCE CURRENT MODE CONTROLLERSUC2844BD1R2G Electronic IC Chips HIGH PERFORMANCE CURRENT MODE CONTROLLERS

 

MAXIMUM RATINGS

Rating Symbol Value Unit
Total Power Supply and Zener Current (ICC + IZ) 30 mA
Output Current, Source or Sink (Note 1) IO 1.0 A
Output Energy (Capacitive Load per Cycle) W 5.0 μJ
Current Sense and Voltage Feedback Inputs Vin − 0.3 to + 5.5 V
Error Amp Output Sink Current IO 10 mA

Power Dissipation and Thermal Characteristics

D Suffix, Plastic Package, SOIC−14 Case 751A

    Maximum Power Dissipation @ TA = 25°C

    Thermal Resistance, Junction−to−Air

D1 Suffix, Plastic Package, SOIC−8 Case 751

    Maximum Power Dissipation @ TA = 25°C

    Thermal Resistance, Junction−to−Air

N Suffix, Plastic Package, Case 626

    Maximum Power Dissipation @ TA = 25°C

    Thermal Resistance, Junction−to−Air

 

 

PD

RθJA

 

PD

RθJA

 

PD

RθJA

 

 

862

145

 

702

178

 

1.25

100

 

 

mW

°C/W

 

mW

°C/W

 

W

°C/W

Operating Junction Temperature TJ +150 °C

Operating Ambient Temperature

    UC3844B, UC3845B

    UC2844B, UC2845B

TA

 

0 to + 70

− 25 to + 85

°C
Storage Temperature Range Tstg − 65 to +150 °C

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.

1. Maximum package power dissipation limits must be observed.

 

 

 

 

 

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Contact Details
Anterwell Technology Ltd.

Contact Person: Miss. Sharon Yang

Tel: 86-755-61169882

Fax: 86-755-613169859

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