LM5576MHX ,SIMPLE SWITCHER? 6V to 75V, 3A Wide Vin Step-Down Regulator 20-HTSSOP -40 to 125Pin Functions (continued)PINI/O DESCRIPTION APPLICATION INFORMATIONNO. NAME13, 14 PGND GROUND Power ..
LM5576MHX/NOPB ,SIMPLE SWITCHER? 6V to 75V, 3A Wide Vin Step-Down Regulator 20-HTSSOP -40 to 125Block Diagram..... 94 Revision HistoryNOTE: Page numbers for previous revisions may differ from pag ..
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LM5642MTCX/NOPB ,4.5-36V, Current Mode Dual Synchronous Buck Controller with Oscillator Synchronization 28-TSSOP -40 to 125Connection DiagramKS1 RSNS1 RSNS128 28KS11 1ILIM1 SW1 SW127 ILIM1 272 2COMP1 HDRV1 HDRV126 COMP1 26 ..
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LM5576MH-LM5576MHX-LM5576MHX/NOPB
SIMPLE SWITCHER庐 75V, 3A Step-Down Switching Regulator
RAMP
VCC
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GND
LM5576VIN
SYNC
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LM5576, LM5576-Q1SNVS447J–JANUARY 2007–REVISED NOVEMBER 2014
LM5576/-Q1 SIMPLE SWITCHER® 75V,3A Step-Down Switching Regulatoris an Automotive grade1 Qualified Junction Temperature)0 Qualified (−40°Cto+
Junction Temperature) Integrated75V, 170 mΩ N-channel Ultra-Wide Input Voltage Range Adjustable Output Voltageas 1.5% (Q1) and 1.65% (Q0) Feedback
Accuracy Operating Frequency Adjustable Between50 kHz
and 500 kHz with Single Resistor Masteror Slave Frequency Synchronization Adjustable Soft-Start Mode Control Architecture Error Amplifier (Exposed Pad) Automotive Industrial
The LM5576isan easyto use SIMPLE SWITCHER®
buck regulator which allows design engineers to
design and optimizea robust power supply usinga
minimum setof components. Operating with an input
voltage rangeof6- 75V, the LM5576 delivers3Aof
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 easeof loop compensation without the usual
limitationof low-duty cycles associated with current
mode regulators. The operating frequency is
adjustable from 50 kHz to 500 kHz to allow
optimizationof size and efficiency. To reduce EMI,a
frequency synchronization pin allows multiple ICs
from the LM(2)557x familyto self-synchronizeorto
synchronize to an external clock. The LM5576
ensures robustness with cycle-by-cycle current limit,
(1) Forall available packages, see the orderable addendumat
the endofthe datasheet.
Schematic
