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TEXAS INSTRUMENTS  UC3843AN  PWM Controller, 12V-25V supply, 450kHz, 15V/1A out, DIP-8

TEXAS INSTRUMENTS UC3843AN

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Product Overview

The UC3843AN is a Current Mode PWM Controller optimized for off-line and DC to DC converters. Providing the necessary features to control current mode switched mode power supplies, this controller has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under-voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
  • Optimized for off-line and DC to DC converters
  • Low start up current (<0.5mA)
  • Trimmed oscillator discharge current
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Under-voltage lockout with hysteresis
  • Double pulse suppression
  • High current totem pole output
  • Internally trimmed bandgap reference
  • Low RO error amp
  • Green product and no Sb/Br

Applications

Power Management

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Product Information

Input Voltage:
25V
Output Voltage:
15V
Output Current:
1A
Supply Voltage Min:
12V
Supply Voltage Max:
25V
Controller IC Case Style:
DIP
No. of Pins:
8Pins
Frequency:
450kHz
Operating Temperature Min:
0°C
Operating Temperature Max:
70°C
Packaging:
Each
Product Range:
-
Power Dissipation Pd:
1 W
MSL:
-
Supply Voltage Range:
12V to 25V
SVHC:
No SVHC (15-Jun-2015)
Digital IC Case Style:
DIP

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Legislation and Environmental

Moisture Sensitivity Level:
-
Product Traceability
RoHS Compliant:
Yes

Applications

  • Power Management

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