TL2843D-8 Part Information

Details for TL2843D-8 by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented circuits are an undervoltage lockout (UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator (that also provides current-limit control), and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving Nchannel MOSFETs, is low when it is in the off state.

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Part Features

  • 500-kHz Operation
  • Automatic Feed-forward compensation
  • Designed to be Interchangeable with UC2842 and
  • Double-Pulse Suppression
  • Enhanced Load-Response Characteristics
  • Error Amplifier With Low Output Resistance
  • High-Current Totem-Pole Output
  • Internally Trimmed Bandgap Reference
  • Low Start-Up Current (< 1 mA)
  • Optimized for Off-Line and DC-to-DC Converters
  • Pulse-by-Pulse Current Limiting
  • Undervoltage Lockout With Hysteresis

Part Specifications

Input Voltage 5.5V
Output Voltage 30V
Output Current 200mA
Supply Voltage Min 12V
Supply Voltage Max 25V
Controller IC Case Style SOIC
No. of Pins 8Pins
Frequency 500kHz
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Base Number 2843
Controller Type PWM
Input Voltage Max 5V
Operating Temperature Range -40°C to +85°C
Output Energy per Cycle 5µJ
Output Type Totem Pole
Supply Voltage Range 12V to 25V
Termination Type Surface Mount Device
RoHS Compliant

Alternative Part Descriptions

  • Economy single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, -40-85C | Texas Instruments

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