0
Rating |
Catalog |
Topology |
Buck |
Iout (max) (A) |
1.5 |
Vin (max) (V) |
42 |
Vin (min) (V) |
6 |
Vout (max) (V) |
40 |
Vout (min) (V) |
1.23 |
Features |
Frequency synchronization, Overcurrent protection |
Control mode |
current mode |
Operating temperature range (°C) |
-40 to 125 |
Iq (typ) (A) |
0.001 |
Duty cycle (max) (%) |
95 |
HTSSOP (PWP)-16-32 mm² 5 x 6.4
The LM25575 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 LM25575 delivers 1.5-A of continuous output current with an integrated 330-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 LM25575 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-16 package featuring an exposed die attach pad for thermal dissipation. The LM25575 is supported by the full suite of WEBENCH® On-Line design tools.