TL2575, TL2575HV 1-A Simple Step-Down Switching Voltage Regulators
1 Features
- Fixed 3.3-V, 5-V, 12-V, and 15-V options with ±5% regulation (maximum) over line, load, and temperature conditions
- Adjustable option with a range of 1.23 V to 37 V (57 V for HV version) and ±4% regulation (maximum) over line, load, and temperature conditions
- Specified 1-A output current
- Wide input voltage range
- 4.75 V to 40 V (60 V for HV version)
- Requires only four external components (fixed versions) and uses readily available standard inductors
- 52-kHz (typical) fixed-frequency internal oscillator
- TTL shutdown capability with 50-μA (typical) standby current
- High efficiency
- As high as 88% (typical)
- Thermal shutdown and current-limit protection with cycle-by-cycle current limiting
2 Applications
- Buck and inverting buck-boost power supplies
- Motor drives and building automation
- Grid infrastructure and factory automation and control
3 Description
The TL2575 and TL2575HV devices provide all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. They require four to six external components for operation. They accept a wide input-voltage range of up to 60 V (TL2575-HV) and are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustable-output version. The TL2575 and TL2575HV devices have an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a manual shutdown is available through the external ON/OFF pin.
| PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
|---|---|---|
| TL2575, TL2575HV | PDIP (16) | 19.31 mm × 6.35 mm |
| TO-263 (5) | 10.16 mm × 8.93 mm | |
| TO-220 (5) | 10.16 mm × 8.82 mm |
4 Revision History
Changes from Revision C (October 2014) to Revision D (June 2022)
- Updated the numbering format for tables, figures, and cross-references throughout the document.Go
- Updated applicationsGo
Changes from Revision B (January 2007) to Revision C (October 2014)
- Updated document to new TI data sheet format.Go
- Deleted Ordering Information table.Go
- Added Pin Functions table.Go
- Added ESD Ratings table.Go
- Changed Thermal Information table.Go
- Added Detailed Description sectionGo
- Added Application and Implementation section.Go
- Added Power Supply Recommendations and Layout sections.Go
