Wide-Range Power-Supply Controller
Product details
Parameters
Package | Pins | Size
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
Description
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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TL499A Wide-Range Power-Supply Controllers datasheet (Rev. H) | Nov. 30, 2015 |
Application note | Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) | Mar. 12, 2019 | |
Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
Application note | Designing Switching Voltage Regulators With the TL499A | Aug. 08, 2003 | |
Application note | Understanding Boost Power Stages In Switchmode Power Supplies | Mar. 04, 1999 | |
Application note | Understanding Buck Power Stages In Switchmode Power Supplies | Mar. 04, 1999 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
PDIP (P) | 8 | View options |
SO (PS) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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