Texas Instruments TL284xB, TL384xB High-Performance Current-Mode PWM Controllers User Manual and Specifications
Summary
The TL284xB and TL384xB series are high-performance PWM controllers designed for implementing robust fixed-frequency current-mode control in off-line or DC-to-DC power circuits. These integrated circuits feature essential controls like Undervoltage Lockout (UVLO), internal precision references, and high-current totem-pole output stages ideal for MOSFET driving. This technical manual provides comprehensive details on operational modes, temperature ratings, varying UVLO thresholds, and package options, making it an essential resource for power electronics engineers developing reliable DC regulation systems.
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 23 |
| File Size | 538.64 KB |
| Published | July 12, 2026 |
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Frequently Asked Questions
What is the maximum operational temperature range for the TL284xB series?
The TL284xB-series devices are characterized for operation from –40°C to 85°C.
How does the UVLO feature affect power supply voltage?
The undervoltage lockout (UVLO) monitors the supply voltage; typical thresholds include 16 V (on) and 10 V (off) for select devices.
Are these controllers suitable for automotive use?
No, they are not designed or intended for use in automotive applications unless specifically designated by TI as compliant with ISO/TS 16949 requirements.
Which series is best suited for off-line DC-DC converters?
The TLx842B and TLx843B devices are ideally suited to off-line applications due to their typical UVLO thresholds.
What improvements do the TX Series offer over older models?
Improvements include a start-up current specified up to 0.5 mA (max) and an oscillator discharge current trimmed to 8.3 mA (typ).