LM5576MH

TEXAS INSTRUMENTS  LM5576MH  直流-直流开关降压逐步递减稳压器, 可调, 6V-75V输入, 1.225V-70V输出, 3A输出, HTSSOP-20

The is an easy-to-use SIMPLE SWITCHER Buck Regulator, allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 to 75V, it delivers 3A of continuous output current with an integrated 170mR N-channel MOSFET. The regulator utilizes an emulated current mode architecture which provides inherent line regulation, tight load transient response and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50 to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM2557x family to self-synchronize or to synchronize to an external clock. It ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down and remote shut-down. Supported by the full suite of WEBENCH On-Line design tools.

.

Integrated 75V, 170mR N-channel MOSFET

.

Ultra-wide input voltage range from 6 to 75V

.

Adjustable output voltage as low as 1.225V

.

1.5% Q1 and 1.65% Q0 Feedback reference accuracy

.

Operating frequency adjustable between 50 and 500kHz with single resistor

.

Master or slave frequency synchronization

.

Adjustable soft-start

.

Emulated current mode control architecture

.

Wide bandwidth error amplifier

.

Built-in protection

Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.