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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) - Supervisors > XC6129C43LNR-G
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XC6129C43LNR-G

In Stock 292182 pcs Reference Price(In US Dollars)
1+
$0.2072
200+
$0.0802
500+
$0.0774
1000+
$0.076
Manufacturer Part Number:
XC6129C43LNR-G
Manufacturer / Brand
Torex Semiconductor Ltd
Part of Description:
IC SUPERVISOR 1 CHANNEL SSOT24
Datasheets:
XC6129C43LNR-G(1).pdfXC6129C43LNR-G(2).pdfXC6129C43LNR-G(3).pdfXC6129C43LNR-G(4).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 292182 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number XC6129C43LNR-G
Manufacturer / Brand Torex Semiconductor Ltd
Stock Quantity 292182 pcs Stock
Category Integrated Circuits (ICs) > Power Management (PMIC) - Supervisors
Description IC SUPERVISOR 1 CHANNEL SSOT24
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Threshold 4.3V
Type Voltage Detector
Supplier Device Package SSOT-24
Series -
Reset Timeout 50µs Typical
Reset Active High
Package / Case SC-82
Package Tape & Reel (TR)
Output Push-Pull, Totem Pole
Operating Temperature -40°C ~ 85°C (TA)
Number of Voltages Monitored 1
Mounting Type Surface Mount
Base Product Number XC6129

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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Frequently Asked Questions

Can the XC6129C43LNR-G be used in a 5V system without risk of damage, or does its 4.3V threshold voltage make it unsuitable for direct monitoring?
The XC6129C43LNR-G is not designed to operate directly in a 5V system as an active supervisor; its internal circuitry is rated for a maximum supply voltage that must be verified against the absolute maximum ratings. While the part monitors down to 4.3V, applying a continuous 5V input could exceed its voltage tolerance and compromise reliability. Engineers should confirm the device’s VDD rating from the datasheet and consider using a resistive divider at the input if monitoring a 5V rail is required.
What happens if the supply voltage to the XC6129C43LNR-G drops slowly from 5V to 3.0V—does the reset signal respond immediately upon crossing the 4.3V threshold?
Yes, the XC6129C43LNR-G generates a reset pulse whenever the monitored voltage falls below its 4.3V threshold with typical hysteresis. This response occurs regardless of the rate of voltage change, ensuring protection during slow brownout conditions. However, noise on the supply line may cause minor glitches in the reset output, which can be mitigated with proper filtering or external hysteresis.
How does the push-pull output configuration of the XC6129C43LNR-G affect interfacing with open-drain microcontrollers or other logic families?
The push-pull (totem pole) output actively drives both high and low, eliminating the need for pull-up resistors when interfacing with standard CMOS or TTL logic. This simplifies PCB layout compared to open-drain devices and provides faster rise times. However, engineers must ensure downstream components can tolerate the full supply voltage swing and avoid connecting the output across power domains without level shifting.
Is it acceptable to use the XC6129C43LNR-G in battery-powered applications where the supply voltage fluctuates near the 4.3V threshold due to load transients?
The device includes built-in hysteresis to prevent chatter around the threshold, making it suitable for noisy or dynamically changing supplies common in battery systems. Nevertheless, designers should evaluate transient response under worst-case load conditions and verify that the reset pulse duration meets system recovery requirements, especially since the typical timeout is only 50µs.
Can multiple XC6129C43LNR-G devices be connected in parallel on the same voltage rail to improve noise immunity?
Parallel connection is generally not recommended because each device will have slight variations in threshold voltage and propagation delay. This can lead to inconsistent reset signaling and potential race conditions. Instead, use a single well-filtered supervisor or add external RC filtering to one instance for shared monitoring.
What are the implications of replacing the XC6129C43LNR-G with another voltage detector in a legacy design, particularly regarding pin compatibility and timing behavior?
While some alternatives like the MIC842 or MAX809 offer similar functionality, differences in threshold accuracy, hysteresis, reset timeout, and package type must be addressed. For example, the XC6129C43LNR-G uses an SSOT-24 package and has a 4.3V nominal threshold with push-pull output—engineers must verify electrical equivalence and perform margin testing before substitution.
Does the XC6129C43LNR-G require external components for basic operation, and what impact do parasitic inductance or capacitance have on performance?
Minimal external components are needed: bypass capacitors on VDD and RESET are typically sufficient. However, long traces or unshielded routing can introduce ringing or delayed response, affecting reset timing accuracy. Designers should keep traces short, place decoupling capacitors close to the IC, and simulate transient behavior if operating in harsh EMI environments.
In industrial temperature applications (-40°C to +85°C), how stable is the 4.3V threshold of the XC6129C43LNR-G over time and temperature?
The threshold voltage exhibits tight initial accuracy but may drift slightly with temperature and aging. At the extremes of its operating range, engineers should account for ±1–2% variation depending on manufacturing lot. For mission-critical systems, periodic validation under thermal cycling or accelerated life testing is advisable to confirm long-term reliability.
Can the RESET output of the XC6129C43LNR-G sink enough current to drive a MOSFET gate or LED indicator directly?
The push-pull output can source and sink up to tens of mA, sufficient for driving low-capacitance loads such as microcontroller reset pins or small LEDs with appropriate series resistance. However, driving larger capacitive loads may slow switching edges and increase power dissipation—engineers should check the datasheet’s output drive characteristics and test under actual load conditions.
If a system requires monitoring two distinct rails (e.g., 3.3V and 5V), can a single XC6129C43LNR-G be repurposed by scaling the input voltage via resistors?
Voltage scaling using resistors is possible only if the scaled version of the secondary rail still exceeds 4.3V under all operating conditions. For example, a 3.3V rail scaled to ~4.5V might work, but this reduces available headroom and increases sensitivity to resistor tolerance. It's safer to use dedicated supervisors for each rail to preserve design margins and simplify diagnostics.

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XC6129C43LNR-G

Torex Semiconductor Ltd

IC SUPERVISOR 1 CHANNEL SSOT24

In Stock: 292182

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