UC3842AN Part Information

Details for UC3842AN by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The UCx84xA family of control ICs is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control currentmode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5 mA, oscillator discharge is trimmed to 8.3 mA, and during UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

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Part Features

  • Automatic Feedforward Compensation
  • Double Pulse Suppression
  • Enhanced Load Response Characteristics
  • High-Current Totem Pole Output
  • Internally-Trimmed Bandgap Reference
  • Low Start-Up Current (< 0.5 mA)
  • Optimized for Off-Line and DC-DC Converters
  • Pulse-by-Pulse Current Limiting
  • Trimmed Oscillator Discharge Current
  • Undervoltage Lockout With Hysteresis
  • Up to 500-kHz Operation

Part Specifications

Input Voltage 15V
Output Voltage 5V
Output Current 1A
Supply Voltage Min 12V
Supply Voltage Max 25V
Controller IC Case Style DIP
No. of Pins 8Pins
Frequency 500kHz
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL -
SVHC No SVHC (27-Jun-2018)
Base Number 3842
Controller Type PWM
IC Generic Number 3842
IC Temperature Range Commercial
Input Current 11mA
Logic Function Number 3842A
Operating Temperature Range 0°C to +70°C
Output Current Max 1A
Output Energy per Cycle 5µJ
Output Type Totem Pole
Power Dissipation Pd 1W
Power Supply IC Type PWM controller
Supply Voltage Range 12V to 25V
Termination Type Through Hole
RoHS Compliant

Alternative Part Descriptions

  • Current Mode PWM Controller 1A 8-Pin | RS Components
  • PMIC; PWM controller; 1A; 47÷500kHz; Channels: 1; DIP8; Usup: 16÷30V | Transfer Multisort Elektronik
  • 30-V, 1A, 500KHz current mode PWM controller with 16V/10V UVLO 100% duty cycle, 0°C to 70°C | Texas Instruments
  • Switching controller IC [Texas Instruments] UC3842AN Switching controller IC | Distrelec

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