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TL499A

ACTIVE

Wide-Range Power-Supply Controller

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Data sheet

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LM5157 ACTIVE 6A/4A, 50-V, 2.2-MHz wide VIN boost, flyback, & SEPIC converter with dual random spread spectrum Lower quiescent current, wider voltage range

TL499A

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 1.1 Vin (max) (V) 10 Operating temperature range (°C) -20 to 85 Topology Boost Rating Catalog Vout (min) (V) 2.9 Vout (max) (V) 30 Features Nonsynchronous rectification Iq (typ) (µA) 800 Duty cycle (max) (%) 70
Vin (min) (V) 1.1 Vin (max) (V) 10 Operating temperature range (°C) -20 to 85 Topology Boost Rating Catalog Vout (min) (V) 2.9 Vout (max) (V) 30 Features Nonsynchronous rectification Iq (typ) (µA) 800 Duty cycle (max) (%) 70
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOP (PS) 8 48.36 mm² 6.2 x 7.8
  • 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
  • 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

The TL499A device 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.

The TL499A device 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.
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* Data sheet TL499A Wide-Range Power-Supply Controllers datasheet (Rev. H) PDF | HTML 30 Nov 2015

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