All trademarks are the property of their respective owners.
DescriptionThe LM25574MT/NOPB is an easy to use buck regulator which allows design engineers to design andoptimize a robust power supply using a minimum set of components. Operating with an input voltagerange of 6 V to 42 V, the LM25574MT/NOPB delivers 0.5-A of continuous output current with an integrated750-m? N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture whichprovides inherent line regulation, tight load transient response, and ease of loop compensationwithout the usual limitation of low-duty cycles associated with current mode regulators. Theoperating frequency is adjustable from 50 kHz to 1-MHz to allow optimization of size andefficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557xfamily to self-synchronize or to synchronize to an external clock. The LM25574MT/NOPB guaranteesrobustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, andremote shut-down. The device is available in a TSSOP-16 package. The LM25574MT/NOPB is supported by thefull suite of WEBENCH? On-Line designtools.
Feature
- Integrated 42-V, 750-m? N-ChannelMOSFET
- Ultra-Wide Input Voltage From 6 V to 42 V
- AdjustableOutput Voltage as Low as 1.225 V
- 1.5% Feedback ReferenceAccuracy
- Operating Frequency Adjustable Between 50 kHz and 1 MHz With SingleResistor
- Master or Slave FrequencySynchronization
- Adjustable Soft-Start
- Emulated Current ModeControl Architecture
- Wide Bandwidth ErrorAmplifier
- Built-In Protection
- TSSOP-16Package
- Create a Custom Design Using the LM25574 With theWEBENCH? PowerDesigner
All trademarks are the property of their respective owners.
DescriptionThe LM25574 is an easy to use buck regulator which allows design engineers to design andoptimize a robust power supply using a minimum set of components. Operating with an input voltagerange of 6 V to 42 V, the LM25574 delivers 0.5-A of continuous output current with an integrated750-m? N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture whichprovides inherent line regulation, tight load transient response, and ease of loop compensationwithout the usual limitation of low-duty cycles associated with current mode regulators. Theoperating frequency is adjustable from 50 kHz to 1-MHz to allow optimization of size andefficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557xfamily to self-synchronize or to synchronize to an external clock. The LM25574 guaranteesrobustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, andremote shut-down. The device is available in a TSSOP-16 package. The LM25574 is supported by thefull suite of WEBENCH? On-Line designtools.
