XC9236B08DMR-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9236B08DMR-G is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor. It operates within an input voltage range of 2.0V to 6.0V and provides a fixed output voltage of 0.8V with a maximum output current of 600mA. The device features a switching frequency of 3MHz and a typical standby current consumption of 21µA. It utilizes automatic PWM/PFM switching control for high efficiency across load ranges. The component is housed in a SOT-25-5 package and supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification topology with built-in P-channel MOS driver and N-channel MOS switching transistors
• Automatic switching between PWM and PFM modes for optimized efficiency at light and heavy loads
• Internal oscillator allows selection of 3MHz switching frequency to minimize external component size

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded circuits needing stable low-voltage regulation from variable input sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'B' indicates the fixed 0.8V output variant when ordering. Confirm the 'G' suffix denotes RoHS compliance status as per manufacturer specifications. Ensure the SOT-25-5 package dimensions align with the target PCB footprint constraints. Cross-reference the datasheet for thermal performance requirements under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a fixed 0.8V output is required without external feedback resistors. The 3MHz switching frequency enables the use of smaller inductors and capacitors compared to lower-frequency alternatives. Consider the automatic PWM/PFM mode for applications prioritizing battery life during light-load periods. Verify that the 600mA output current meets the peak demand of the downstream circuitry.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the XC9236 series, which are synchronous-rectification type DC/DC converters designed for portable equipment. The series integrates driver transistors to allow the use of ceramic capacitors, simplifying the external circuit configuration. The B-type designation specifically refers to models with fixed output voltages ranging from 0.8V to 4.0V in increments of 0.05V.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the XC9236B08DMR-G include a shutdown function?

No, this specific part number does not feature a shutdown pin or function; it remains active based on input voltage presence.

What control mode does the XC9236B08DMR-G utilize?

It employs automatic switching between PWM and PFM control modes to maintain high efficiency across varying load conditions.