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Product attributes Property Value
Manufacturer Torex Semiconductor Ltd
Product Series XC9140
Packaging Tape & Reel (TR) |
Function Step-Up
Output Configuration Positive
Topology Boost
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 0.9V
Voltage - Input (Max) 5.5V
Voltage - Output (Min/Fixed) 4.3V
Voltage - Output (Max) -
Current - Output 100mA
Frequency - Switching -
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Supplier Device Package SOT-25
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Torex XC9140C431MR-G is a high-efficiency synchronous boost DC-DC converter designed to deliver a fixed 4.3V output from a wide input range of 0.9V to 5.5V. Capable of supplying up to 100mA, this converter is ideal for battery-powered applications where extending battery life is critical. Housed in a compact SC-74A (SOT-753) package, it is suitable for space-constrained designs in portable electronics, IoT devices, and medical instruments.

  • Wide Input Range (0.9V-5.5V): Operates from a single-cell battery down to 0.9V, maximizing usable battery capacity.
  • Fixed 4.3V Output: Provides a stable, regulated supply without external resistor dividers, simplifying design.
  • Compact SOT-753 Package: Saves board space for miniaturized portable devices.
  • Synchronous Rectification: Enhances efficiency, reducing power loss and heat generation in battery-operated systems.

Battery-Powered IoT Sensors

With an input range starting at 0.9V, this boost converter can efficiently step up single-cell alkaline or NiMH batteries to a stable 4.3V rail, extending the operational life of wireless sensors and beacons.

Portable Medical Devices

The fixed 4.3V output and small SOT-753 package make it suitable for compact glucose monitors or digital thermometers, ensuring a consistent supply from a low-voltage battery source.

Wearable Electronics

For smartwatches and fitness trackers, the XC9140C431MR-G provides a reliable 4.3V supply from a Li-ion battery (2.8-4.2V), maintaining performance as the battery discharges.

Remote Controls & Key Fobs

Boost the 1.5V from a single AAA battery to 4.3V for IR LEDs and RF transmitters, ensuring strong signal output even at low battery levels.

LED Bias Supplies

Generate a stable 4.3V bias for small LED drivers or display backlights in handheld devices, using the low 0.9V start-up capability to operate from nearly depleted batteries.

Q: What type of converter is the XC9140C431MR-G?
A: It is a synchronous step-up (Boost) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is from 0.9V to 5.5V.
Q: What is the output voltage?
A: The fixed output voltage is 4.3V.
Q: What is the maximum output current?
A: The maximum output current is 100mA.
Q: What is the switching frequency?
A: The switching frequency is not specified in the provided data.
Q: What package is available?
A: It comes in SC-74A (SOT-753) package.
Base Product Number : XC9140C431MR
0.9V-5.5V 100mA 4.3V Output Battery-Powered Boost DC-DC Converter IoT SC-74A SOT-753 Torex Wearable
Q: What type of converter is the XC9140C431MR-G?
A: It is a synchronous step-up (Boost) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is from 0.9V to 5.5V.
Q: What is the output voltage?
A: The fixed output voltage is 4.3V.
Q: What is the maximum output current?
A: The maximum output current is 100mA.
Q: What is the switching frequency?
A: The switching frequency is not specified in the provided data.
Q: What package is available?
A: It comes in SC-74A (SOT-753) package.