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TL499A

現行

寬電壓範圍電源供應控制器

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LM5157 現行 具雙隨機展頻的 6A/4A、50-V、2.2-MHz 大範圍 VIN 升壓、返馳式、SEPIC 轉換器 Lower quiescent current, wider voltage range

TL499A

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Boost Vin (max) (V) 10 Vin (min) (V) 1.1 Vout (max) (V) 30 Vout (min) (V) 2.9 Features Nonsynchronous rectification Duty cycle (max) (%) 70 Iq (typ) (A) 0.0008 Operating temperature range (°C) -20 to 85
Rating Catalog Topology Boost Vin (max) (V) 10 Vin (min) (V) 1.1 Vout (max) (V) 30 Vout (min) (V) 2.9 Features Nonsynchronous rectification Duty cycle (max) (%) 70 Iq (typ) (A) 0.0008 Operating temperature range (°C) -20 to 85
SOP (PS) 8 48.36 mm² (6.2 mm × 7.8 mm) PDIP (P) 8 92.5083 mm² (9.81 mm × 9.43 mm)
  • 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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* 資料表 TL499A Wide-Range Power-Supply Controllers datasheet (Rev. H) PDF | HTML 2015/11/30

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