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TL499A -Wide-Range Power-Supply Controller

TL499A -Wide-Range Power-Supply Controller

TL499A -Wide-Range Power-Supply Controller
The TL499A is an integrated circuit designed to provide a wide range of adjustable regulated supply voltages. The regulated output voltage can be varied from 2.9 V to 30 V by adjusting two external resistors. When the TL499A is ac-coupled to line power through a step-down transformer, it operates as a series dc voltage regulator to maintain the regulated output voltage. With the addition of a battery from 1.1 V to 10 V, an inductor, a filter capacitor, and two resistors, the TL499A operates as a step-up switching regulator during an ac-line failure.
The adjustable regulated output voltage makes the TL499A useful for a wide range of applications. Providing backup power during an ac-line failure makes the TL499A extremely useful in microprocessor memory applications.
The TL499AC is characterized for operation from -20°C to 85°C.


  • Internal Series-Pass and Step-Up Switching Regulator
  • Output Adjustable From 2.9 V to 30 V
  • 1-V to 10-V Input for Switching Regulator
  • 4.5-V to 32-V Input for Series Regulator
  • Externally Controlled Switching Current
  • No External Rectifier Required

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  • Product Code: TL499A -Wide-Range Power-Supply Controller
  • Availability: Out Of Stock!
  • Rs100.00

Tags: tl499a, wide range, wide, range, power, supply, controller, ic, semiconductor, clock

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