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 .
•1 Optimized for Off-Line and DC-to-DC Converters
• Low Start-Up Current (< 1 mA)
• Automatic Feed-forward compensation
• Pulse-by-Pulse Current Limiting
• Enhanced Load-Response Characteristics
• Undervoltage Lockout With Hysteresis
• Double-Pulse Suppression
• High-Current Totem-Pole Output
• Internally Trimmed Bandgap Reference
• 500-kHz Operation
• Error Amplifier With Low Output Resistance
• Designed to be Interchangeable with UC2842 and
UC3842 Series
2 Applications
• Switching regulators of any polarity
• Transformer-coupled DC/DC convertors
Device Pinout Drawing SOIC (14)
3 Description.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | TL2842 |
Texas Instruments |
Current-Mode PWM Controllers | |
2 | TL2842B |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS | |
3 | TL2843B |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS | |
4 | TL2843B-Q1 |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLER | |
5 | TL2844 |
Texas Instruments |
Current-Mode PWM Controllers | |
6 | TL2844B |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS | |
7 | TL2845 |
Texas Instruments |
Current-Mode PWM Controllers | |
8 | TL2845B |
Texas Instruments |
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS | |
9 | TL287 |
Texas Instruments |
JFET-INPUT OPERATIONAL AMPLIFIERS | |
10 | TL288 |
Texas Instruments |
JFET-INPUT OPERATIONAL AMPLIFIERS | |
11 | TL28L92 |
Texas Instruments |
3.3-V/5-V Dual Universal Asynchronous Receiver/Transmitter | |
12 | TL2003 |
Thomson |
Thyristors |