XDL601 Series

AEC-Q100 Compliant, Automotive Integrated-Coil Step-down “micro DC/DC” Converters

The XDL601 series consist of ultra-compact step-down DC/DC converters with integrated coils and control ICs. Simply adding two ceramic capacitors to their external components can make it possible to create a power supply circuit with a maximum of 1.5A, and a 50% or greater reduction in space compared to structures using stand-alone DC/DC converters. Since the coil is built-in, board layouts can be simplified to minimize malfunctions, noise, and other problems arising from component placement or wire routing.

The input voltage can range from 2.5V – 5.5V and the output voltage from 0.8V – 3.6V (standard voltage settings exist), with a switching frequency of 3.0MHz and a circuit system which employs synchronous rectification. The operating mode uses “HiSAT-COT (*) control” which has outstanding transient response characteristics, and allows either “PWM control” or “PWM/PFM automatic switching control” to be selected depending on the application. “PWM control” is capable of suppressing output ripple voltage to a low level, while “PWM/PFM automatic switching control” can achieve high efficiency over all load ranges from light to heavy loading.

Their package is an ultra-compact DFN3625-11B (3.6 x 2.5 x h1.6mm) which uses a wettable flank structure. Fillets are formed at the sides of the terminal, allowing automatic visual inspections of solder joints to be performed.
(*)HiSAT-COT is a proprietary high-speed transient response technology which Torex developed and the DC / DC converters with HiSAT-COT technology are ideal for LSI's that require high precision and high stability power supply voltage.

Typical Application Circuit


Input Voltage Range 2.5V~5.5V
Output Voltage 0.8V,1.0V,1.1V,1.2V,1.25V,1.3V,1.35V, 1.5V,1.8V,2.5V,3.0V,3.3V
Oscillation Frequency 3.0MHz
Output Current 1.5A
Efficiency 93% (VIN=5.0V,VOUT=3.3V/500mA)
Control Methods HiSAT-COT
Circuit Protection Thermal Shut Down
Current Limit Circuit (Drop)
Short Circuit Protection (Latch)
Functions Soft-start Circuit Built-in
CL Discharge
Output Capacitor Low ESR Ceramic Capacitor
Operating Ambient Temperature -40℃~+105℃
Environmentally Friendly EU RoHS Compliant, Pb Free


Package DFN3625-11B Number of Pins 11
Pcs/Reel 2,000 Package Size(mm) 2.5 x 3.6 x 1.6


Technical Document