LM3485MM Semiconductors - ICs by Texas Instruments

BUCK CONTROLLER PFET SMD MSOP8

Electronic & Electrical Components>Semiconductors - ICs>Power Management
Status: Unknown
Series: -
RoHS: Unknown
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The LM3485 is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, low-cost, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control-loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultralow dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. Current limit protection is provided by measuring the voltage across the RDS(ON) of the PFET, thus eliminating the need for a sense resistor. The cycleby-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.

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Specifications

Supply Voltage Min 4.5V
Supply Voltage Max 35V
No. of Outputs 1 Output, 1Outputs
Duty Cycle (%) 100%
Controller IC Case Style VSSOP
No. of Pins 8Pins
Switching Frequency 1MHz
Topology Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL -
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Min 1.242V
Base Number 3485
Frequency 1MHz
Input Voltage -0.3V
Input Voltage Max 36V
Operating Temperature Range -40°C to +125°C
Output Current 4A
Output Current Max 0.44A
Termination Type Surface Mount Device
Voltage Regulator Type Buck

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