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TL499A

Features: Internal Series-Pass and Step-Up Switching RegulatorOutput Adjustable From 2.9 V to 30 V1-V to 10-V Input for Switching Regulator4.5-V to 32-V Input for Series RegulatorExternally Controlled Switching CurrentNo External Rectifier RequiredPinoutSpecificationsOutput voltage, VO (see Note 1...

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SeekIC No. : 004520204 Detail

TL499A: Features: Internal Series-Pass and Step-Up Switching RegulatorOutput Adjustable From 2.9 V to 30 V1-V to 10-V Input for Switching Regulator4.5-V to 32-V Input for Series RegulatorExternally Controll...

TL499A Data Sheet

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Part Number:
TL499A
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

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


Pinout

Connection Diagram


Specifications

Output voltage, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . 35 V
Input voltage, series regulator, VI1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Input voltage, switching regulator, VI2 . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 10 V
Blocking-diode reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 35 V
Blocking-diode forward current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . 1 A
Power switch current (SW IN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . 1 A
Package thermal impedance, JA (see Notes 2 and 3): P package . . . . .  . . 85°C/W
                                                                                      PS package . . . . .  . 95°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . .. . . . . . . 65°C to 150°C


Description

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 to 85.




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