Texas Instruments LM2575 Adjustable Voltage Regulators
Texas Instruments LM2575 Adjustable Voltage Regulators incorporate an integrated switch capable of delivering 1A of load current with excellent line and load regulation. These devices simplify the design of switching power supplies by providing all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. The Texas Instruments LM2575 voltage regulators offer internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. These regulators represent a superior alternative to popular three-terminal linear regulators. Due to its high efficiency, it significantly reduces the size of the heat sink, and in many cases, no heat sink is required.Features
- 3.3V, 5V, 12V, 15V, and adjustable output versions
- Adjustable version output voltage range of 1.23V to 37V (57V for HV version) ±4% max over-line and load conditions
- Guaranteed 1A output current
- Wide input voltage range of 40V and up to 60V for HV version
- Requires only four external components
- 52kHz fixed-frequency internal oscillator
- TTL shutdown capability and low-power standby mode
- High-efficiency
- Uses readily available standard inductors
- Thermal shutdown and current limit protection
- P+ product enhancement tested
Applications
- Simple high-efficiency step-down (buck) regulator
- Efficient pre-regulator for linear regulators
- On-card switching regulators
- Positive to negative converter (buck-boost)
Application Circuit
Đã phát hành: 2019-07-19
| Đã cập nhật: 2023-09-29
