TL2575HV-12

具有输出使能端的 1A 简易步降开关稳压器

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 via an external ON/OFF pin.

.

Fixed 3.3-V, 5-V, 12-V, and 15-V Options with

±5% Regulation Max 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 Max 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 Typ Fixed-Frequency Internal Oscillator

.

TTL Shutdown Capability With 50-µA Typ Standby

Current

.

High Efficiency

.

As High as 88% Typ

.

Thermal Shutdown and Current-Limit Protection with

Cycle-by-Cycle Current Limiting