XC9236B29D4R-G

Voltage Regulators - DC DC Switching Regulators Overview

The XC9236B29D4R-G is a synchronous step-down DC/DC converter manufactured by Torex Semiconductor. It features a built-in P-channel MOS driver transistor and N-channel MOS switching transistor, enabling the use of ceramic output capacitors. The device operates within an input voltage range of 2.0V to 6.0V and provides a fixed output voltage of 2.9V with ±2.0% accuracy. It delivers a maximum output current of 600mA at a selectable switching frequency of either 1.2MHz or 3.0MHz. The component utilizes automatic PWM/PFM switching control for high efficiency across load ranges and includes soft-start and UVLO functions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Built-in P-channel MOS driver and N-channel MOS switching transistors allow for external ceramic capacitor usage
• Automatic PWM/PFM switching control optimizes efficiency from light to heavy loads
• Selectable internal oscillator frequencies support design flexibility for noise and size constraints
• Integrated under-voltage lockout and soft-start functions ensure stable startup and operation

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Battery-powered equipment utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded systems needing compact synchronous buck regulation
• Industrial control modules operating within standard low-voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix D4R against the official datasheet to confirm the selected switching frequency configuration. Ensure the fixed 2.9V output aligns with the target circuit requirements, as this variant does not support adjustable output voltages. Confirm package compatibility and thermal characteristics during integration planning.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.9V output is required from a 2.0V to 6.0V input source. The automatic PWM/PFM mode makes it suitable for applications prioritizing battery life in portable devices. Consider the 600mA current limit and the specific switching frequency options available via the suffix code when designing the external passive components.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the XC9236 series of synchronous rectification type DC/DC converters. The series is characterized by high efficiency and small external component counts due to integrated drivers. The XC9236 specifically employs automatic PWM/PFM switching, distinguishing it from the purely PWM-controlled XC9235 and the manually switchable XC9237.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the manufacturer's cross-reference documentation for verified substitutes. Direct replacements must match the 600mA output current, 2.0V-6.0V input range, and fixed 2.9V output specification.