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UC1843A

PWM Controller flyback or forward - Low start-up current (0.5mA max.) 500KHz op

Status: In Production

Features:

  • Optimized For Off-Line Control
  • Low Start-Up Current (<1mA)
  • Automatic Feed Forward Compensation
  • Trimmed Oscillator Discharge Current
  • Pulse-By-Pulse Current Limiting
  • Enhanced Load Response Characteristics -
  • Double-Pulse Suppression
  • High-Current Totem-Pole Output (1A Peak)
  • Internally Trimmed Band-gap Reference
  • 500kHz Operation Under-voltage Lockout: SG1843 - 8.4 volts
  • Low Shoot-Through Current <75mA Over Temperature
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

Control ICs provides all the necessary features to implement off-line fixed-frequency, current-mode switching power supplies with a minimum of external components. The current mode architecture demonstrates improved load regulation, pulse-by- pulse current limiting and inherent protection of the power supply output switch

Additional Features
    • Optimized For Off-Line Control
    • Low Start-Up Current (<1mA)
    • Automatic Feed Forward Compensation
    • Trimmed Oscillator Discharge Current
    • Pulse-By-Pulse Current Limiting
    • Enhanced Load Response Characteristics -
    • Double-Pulse Suppression
    • High-Current Totem-Pole Output (1A Peak)
    • Internally Trimmed Band-gap Reference
    • 500kHz Operation Under-voltage Lockout: SG1843 - 8.4 volts
    • Low Shoot-Through Current <75mA Over Temperature
Parametrics
Name
Value
Regulator Type
HI Rel Switching Regulators
Configuration
Current Mode PWMs

Documents

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Data Sheets

  
381KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
UC1843AY
0.960000
0.028660
N/A
N/A
10x7x0 mm
N/A
N/A
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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