TL498CP, TL499, TL499A Selling Leads, Datasheet
MFG:TI Package Cooled:DIP-8 D/C:03+
TL498CP, TL499, TL499A Datasheet download
Part Number: TL498CP
MFG: TI
Package Cooled: DIP-8
D/C: 03+
TL498CP, TL499, TL499A
- Table of contents:
Info of TL498CP
Info of TL499
Info of TL499A
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About TL42S-060-833
PDF/DataSheet Download
Datasheet: TL42S-060-833
File Size: 383951 KB
Manufacturer: DB Lectro Inc
Download : Click here to Download
About TL499A
PDF/DataSheet Download
Datasheet: TL499A
File Size: 116925 KB
Manufacturer:
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About TL499A
PDF/DataSheet Download
Datasheet: TL499A
File Size: 116925 KB
Manufacturer:
Download : Click here to Download
TL499A General 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.
TL499A Maximum Ratings
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
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
TL499A 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
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
TL499A Connection Diagram
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