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LM25576MHX/NOPB Power Regulator IC Switching Voltage Regulators 42V 3A SD Switch Reg
1 Features
Ultra-Wide Input Voltage Range from 6 V to 42 V
Adjustable Output Voltage as Low as 1.225 V
1.5% Feedback Reference Accuracy
Operating Frequency Adjustable Between 50 kHz and 1 MHz with Single Resistor
Master or Slave Frequency Synchronization
Adjustable Soft-Start
Emulated Current Mode Control Architecture
Wide Bandwidth Error Amplifier
Built-in Protection
HTSSOP-20EP (Exposed Pad)
Create a Custom Design Using the LM25576 With the WEBENCH® Power Designer
2 Applications
• Industrial
3 Description
The LM25576 is an easy to use 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 V to 42 V, the LM25576 delivers 3 A of continuous output current with an integrated 170-mΩ 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 kHz to 1 MHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self- synchronize or to synchronize to an external clock. The LM25576 ensures 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 HTSSOP-20 package featuring an exposed die attach pad for thermal dissipation. The LM25576 is supported by the full suite of WEBENCH® On-Line design tools.
Device Information
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
LM25576 | HTSSOP (20) | 6.50 mm × 4.40 mm |