LN10161Q/LN10261Q
LN10161Q/LN10261Q
The LN10X61Q1 is a high efficiency, compact, synchronous step-down DC-DC converter employing a constant frequency, peak current mode control architecture with internal compensation. It operates from an input voltage from 3.5V to 60V and integratesboth high-side and low-side power MOSFETs with up to 0.6A/1A/1.5A output capability. The nominal switching frequency is fixed on 400kHz, 1MHz or 2.1MHz, or can be synchronized to an external clock.

Features


● AEC-Q100 Grade 1 Qualified for automotive applications
● Wide VIN Range: 3.5V to 60V
● ±2%, 3.3V and 5V Fixed Outputs or 1V to VIN Adjustable Output
● Integrated both High-Side and Low-Side Power MOSFETs with up to 1.5A Output Capability
● Frequency Options: 400kHz, 1MHz, 2.1MHz
● High Efficiency PFM Operation
● Near 100% Duty Cycle Operation for Low Drop Out Operation
● Power Good Indicator
● PLL Synchronization to External Clock
● Accurate Peak and Valley Clamp
● Internal Compensation
● Output Short-Circuit Protection with Hiccup Mode
● Accurate VIN UVLO Protection
● Over-Temperature Shutdown and Recovery
● Operating Junction Temperature -40˚C to 150 ˚C

● Thermally Enhanced SOIC-EP8 Package (4.9mm X 3.9mm)



Description


The LN10X61Q1 is a high efficiency, compact, synchronous step-down DC-DC converter employing a constant frequency, peak current mode control architecture with internal compensation.

It operates from an input voltage from 3.5V to 60V and integratesboth high-side and low-side power MOSFETs with up to 0.6A/1A/1.5A output capability.

The nominal switching frequency is fixed on 400kHz, 1MHz or 2.1MHz, or can be synchronized to an external clock.

Automatic frequency foldback at light load improves efficiency.
The LN10X61Q1 with VOUT pin provides a fixed output of 3.3V or 5V, and can achieve higher output accuracy,

minimum number of peripheral components as well as lower quiescent current and higher system efficiency.
The LN10X61Q1 with FB pin provides an adjustableoutput voltage from 1V to VIN.

Additional features such as precision enable, power good indicator and internal soft start provide both flexible and easy to use solutions for a wide range of applications.

Full protection features include input UVLO, over temperature shutdown, cycle-by-cycle current limit, and short-circuit protection.




Recommanded part number


Full Orderable Part Number
Package
Main feature
LN10161Q1-11-EFR SOIC-EP8 60V, 1.5A, Fixed 3.3V output, fixed 400k Fsw, DCDC
LN10161Q1-12-EFR SOIC-EP8 60V, 1.5A, Fixed 5V output, fixed 400k Fsw, DCDC
LN10261Q1-11-EFR SOIC-EP8 60V, 1.5A, Adjustable output,  adjustable Fsw, DCDC


Relevant Application