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LM3075_1232766

Features: · Input voltage range of 4.5V-36V· Current Mode Control· Skip mode operation available· Cycle by cycle current limit· 1.24V ±2% ReferenceApplication· Automotive Power Supplies· Distributed Power SystemsPinoutSpecificationsIf Military/Aerospace specified devices are required,please contac...

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SeekIC No. : 004395182 Detail

LM3075_1232766: Features: · Input voltage range of 4.5V-36V· Current Mode Control· Skip mode operation available· Cycle by cycle current limit· 1.24V ±2% ReferenceApplication· Automotive Power Supplies· Distributed...

LM3075_1232766 Data Sheet

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Part Number:
LM3075_1232766
Supply Ability:
5000

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  • 1~5000
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Product Details

Description



Features:

· Input voltage range of 4.5V-36V
· Current Mode Control
· Skip mode operation available
· Cycle by cycle current limit
· 1.24V ±2% Reference


Application

· Automotive Power Supplies
· Distributed Power Systems


Pinout

Connection Diagram


Specifications

If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales ffice/Distributors for availability and specifications.
Voltages from the indicated pins to GND:
VIN, ILIM, CSH                                              −0.3V to 38V
SW, CSL                                             −0.3 to (VIN + 0.3V)
PGOOD, FB, VDD, EXT, EN                             −0.3V to +7V
COMP, SS, FPWM, FS                                  −0.3V to (VLIN5
                                                                                +0.3)V
CBOOT                                                          -0.3V to +43V
CBOOT to SW                                                   −0.3V to 7V
LDRV                                                   −0.3V to (VDD+0.3V)
HDRV to SW                                                               −0.3V
HDRV to CBOOT                                                         +0.3V
Storage Temperature Range                     −65˚C to +150˚C
Junction Temperature                                                 150˚C
Lead Temperature (Soldering, 10
sec)                                                                             260˚C
ESD Rating (Note 2)                                                     1.5kV


Description

The LM3075_1232766 is a current mode control, synchronous buck controller IC. Use of synchronous rectification and pulse-skipping operation at light load achieves high efficiency over a wide load range. Fixed frequency operation can be ob-tained by disabling the pulse-skipping mode. Current mode control assures excellent line and load regulation and a wide loop bandwidth for fast response to load transients.

Current mode control can be achieved by either sensing across the high side NFET or a sense resistor. The switching frequency can be selected as either 200 kHz or 300 kHz from an internal clock.

The LM3075_1232766 is available with an adjustable output in a TSSOP-20 package.




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