LM3485 - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LM3485
Manufacturer

TI
ChipWorker Part#

CW111663536
RoHS

Lead free / RoHS Compliant
Description

Hysteretic PFET Buck Controller
Documentation

Datasheet

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LM3485 Specifications

Attribute	Attribute Value

Part Number	LM3485
Manufacturer	TI
ChipWorker Part#	CW111663536
Documentation	Datasheet
Mounting Style	Surface Mount
Case/Package	VSSOP-8
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RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

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 cycle-by-cycle current limit can be adjusted with a single resistor, ensuring safe operation over a range of output currents.
Easy-to-Use Control Methodology
No Control-Loop Compensation Required
4.5-V to 35-V Wide Input Range
1.242-V to VIN Adjustable Output Range
High Efficiency 93%
±1.3% (±2% Over Temp) Internal Reference
100% Duty Cycle
Maximum Operating Frequency > 1 MHz
Current Limit Protection

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