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UC2845A
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UC2845A

  • Category:ACDC- and -DCDC-power supply
  • Product Name:Current mode PWM controller
  • Manufacturers:TI
  • Production Batch Number:10+
  • Encapsulation:14SOIC, 16SOIC, 8PDIP, 8SOIC
  • Stock Status:There is stock
  • Stock Quantity:10000
  • Minimum order quantity: 1
  • Details:Click to find the UC2845A PDF material
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  • Product introduction

The control IC UC1842A/3A/4A/5A family is a pin-compatible family of improved versions of the UC3842/3/4/5-pin. Providing the necessary functions to control current mode switching power supplies, this family has the following improved features. The start-up current is guaranteed to be less than 0.5 mA. The oscillator discharge is trimmed to 8.3 milliamperes. In undervoltage lockout, the output stage can absorb a ratio of 1.2V to 5VVCC's in the past is at least a decade of milliamperes.

characteristic
 
  • Optimize offline and DC-DC converters
  • Low start-up current" (
  • Side vibration discharge current
  • Automatic feed-forward compensation
  • The pulse is limited by the pulse current
  • Enhanced load response characteristics
  • Undervoltage lockout
  • Double pulse suppression
  • The totem pole outputs a large current
  • Internal fine-tuning bandgap reference
  • 500kHz operation
  • Low voltage reverse osmosis error amplifier
parameter
    UC2845A  
topology   Boost, reverse, forward  
Control method   Current mode  
Duty cycle (max.) (%)   50  
Frequency (max) (khertz)   450  
On/Off of Undervoltage Lockout Threshold (5)   8.4/7.6  
Pins/Packets   14SOIC，16SOIC，8PDIP，8SOIC  
(#) Regulated output   One  
Operating temperature range(°C)   -40 to 85  

andUC2845ARelated ICs are:


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UC2845AQ TI 09+ 14SOIC, 8SOIC Automotive current mode PWM controller
UC2845A TI 10+ 14SOIC, 16SOIC, 8PDIP, 8SOIC Current mode PWM controller

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