XR75100ELMTR-F

DC-DC Cntrlr Dual-OUT Step Down 800kHz 16Pin QFN EP T/R

The XR75100 is a synchronous step-down controller for point-of load supplies up to 20 A. A wide 5 V to 40 V input voltage range allows for single supply operation from industry standard 12 V, 18 V, and 24 V DC and AC rails.

With a proprietary emulated current mode Constant On-Time COT control scheme, the XR75100 provides extremely fast line and load transient response using ceramic output capacitors. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The control loop also provides exceptional line regulation and maintains constant operating frequency. A selectable power saving mode, allows the user to operate in discontinuous mode DCM at light current loads thereby significantly increasing the converter efficiency.

A host of protection features, including over-current, over-temperature, short-circuit and UVLO, help achieve safe operation under abnormal operating conditions.

The XR75100 is available in RoHS compliant, green/halogen free space-saving 16-pin 3 x 3 QFN package.

**Specs and Features:**

**Features:**

* 20 A Capable Step Down Controller:

Wide 5.5 V to 40 V Input Voltage Range

Integrated high Current 2 A/3 A Drivers

0.6 V Adjustable Output Voltage

* Proprietary Constant On-Time Control:

No Loop Compensation Required

<0.01%/V Line Regulation

Ceramic Output Cap. Stable operation

Programmable 200 ns-2 μs on-time

Constant 100 kHz-800 kHz Frequency

Selectable CCM or CCM/DCM Operation

* Programmable current limit:

110 ms Hiccup mode

* Precision Enable and Power-Good Flag

* Programmable Soft-start

* Integrated Bootstrap diode

* 16-pin QFN Packages

**Applications:**

* Networking and Communications

* Fast Transient Point-of-Loads

* Industrial and Medical Equipment

* Embedded High Power FPGA

* Automotive