LM5575MHX/NOPB

Product Summary

The LM5575MHX/NOPB is an easy to use SIMPLE SWITCHER buck regulator which 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 - 75V, the LM5575MHX/NOPB delivers 1.5A of continuous output current with an integrated 330mΩ 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 lowduty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5575MHX/NOPB guarantees robustness with cycle- by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced TSSOP-16 package featuring an exposed die attach pad for thermal dissipation. The LM5575MHX/NOPB is supported by the full suite of WEBENCH On-Line design tools.

Parametrics

LM5575MHX/NOPB absolute maximum ratings: (1)VIN to GND: 76V; (2)BST to GND: 90V; (3)PRE to GND: 76V; (4)SW to GND (Steady State): -1.5V; (5)BST to VCC: 76V; (6)SD, VCC to GND: 14V; (7)BST to SW: 14V; (8)SYNC, SS, FB, RAMP to GND: 7V; (9)ESD Rating Human Body Model: 2kV; (10)Storage Temperature Range: -65°C to +150°C; (11)Vcc Current Limit Vcc = 0V: 25 mA; (12)Vcc Current Limit Vcc = 0V: 25 mA.

Features

LM5575MHX/NOPB features: (1)Integrated 75V, 330mΩ N-channel MOSFET; (2)Ultra-wide input voltage range from 6V to 75V; (3)Adjustable output voltage as low as 1.225V; (4)1.5% feedback reference accuracy; (5)Operating frequency adjustable between 50kHz and 500kHz with single resistor; (6)Master or slave frequency synchronization; (7)Adjustable soft-start; (8)Emulated current mode control architecture; (9)Wide bandwidth error amplifier; (10)Built-in protection.

Diagrams