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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators > S-1711B1825-M6T1G
ABLIC Inc.
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S-1711B1825-M6T1G

In Stock 38495 pcs Reference Price(In US Dollars)
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$1.6423
200+
$0.6552
500+
$0.6346
1000+
$0.6228
Manufacturer Part Number:
S-1711B1825-M6T1G
Manufacturer / Brand
ABLIC Inc.
Part of Description:
IC REG LIN 1.8V/2.5V 150MA SOT23
Datasheets:
S-1711B1825-M6T1G(1).pdfS-1711B1825-M6T1G(2).pdfS-1711B1825-M6T1G(3).pdf
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 38495 pcs Stock Available.
ECAD Model:
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Part Number S-1711B1825-M6T1G
Manufacturer / Brand ABLIC Inc.
Stock Quantity 38495 pcs Stock
Category Integrated Circuits (ICs) > Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Description IC REG LIN 1.8V/2.5V 150MA SOT23
Lead Free Status / RoHS Status: RoHS Compliant
Voltage Dropout (Max) 0.39V @ 150mA, 0.36V @ 150mA
Voltage - Output (Min/Fixed) 1.8V, 2.5V
Voltage - Output (Max) -
Voltage - Input (Max) 6.5V
Supplier Device Package SOT-23-6
Series S-1711
Protection Features Over Current
Package / Case SOT-23-6
Package Tape & Reel (TR)
PSRR 70dB (1kHz)
Output Type Fixed
Output Configuration Positive
Operating Temperature -40°C ~ 85°C (TA)
Number of Regulators 2
Mounting Type Surface Mount
Current - Supply (Max) 90 µA
Current - Quiescent (Iq) 1 µA
Current - Output 150mA
Control Features Enable
Base Product Number S-1711

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S-1711B1825-M6T1G Product Details:

The S-1711B1825-M6T1G from ABLIC Inc. is a dual-output linear voltage regulator delivering 1.8V and 2.5V rails simultaneously at 150mA per output, designed for space-constrained applications requiring multiple stable supply voltages from a single integrated component. This PMIC belongs to the S-1711 series and integrates two independent positive fixed regulators in a compact SOT-23-6 surface-mount package, making it suitable for battery-powered systems, portable instruments, and embedded designs where board area and component count reduction are design priorities.

Operating from input voltages up to 6.5V, the device exhibits dropout voltages of 0.39V for the 1.8V output and 0.36V for the 2.5V output at full 150mA load, enabling efficient operation even when the input supply approaches nominal output levels. The low 1µA quiescent current contributes to extended battery life in sleep or standby modes, while the 90µA maximum supply current under active operation maintains reasonable efficiency across load conditions. A 70dB power supply rejection ratio at 1kHz helps attenuate input ripple and noise, supporting analog, mixed-signal, or precision digital circuitry that demands clean supply rails.

The regulator incorporates enable control for power sequencing or shutdown management, along with over-current protection to safeguard both the device and downstream loads during fault conditions. Specified across a -40°C to 85°C ambient temperature range, the S-1711B1825-M6T1G addresses industrial and commercial thermal environments. The device carries ROHS3 compliance and an MSL-1 moisture sensitivity rating, simplifying PCB assembly and storage handling.

This part is marked as not recommended for new designs, indicating that ABLIC has positioned alternative solutions within its portfolio for current development projects. Engineers working on legacy systems or conducting form-fit-function replacements may consider substitutes such as the S-1721A2518-M6T1U S-1721A2518-M6T1U S-1721A2518-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 46810 , S-1721E1825-M6T1U S-1721E1825-M6T1U S-1721E1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 40849 , or S-1721A1825-M6T1U S-1721A1825-M6T1U S-1721A1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 37336 from the same manufacturer. The dual fixed-output architecture reduces BOM count compared to discrete single-channel regulators, while the SOT-23-6 footprint balances pin accessibility with minimal PCB real estate consumption.

S-1711B1825-M6T1G Image
S-1711B1825-M6T1G (1)

Selecting an S-1711B1825-M6T1G Replacement When Dual 1.8V/2.5V LDO Availability Changes

When a dual fixed-output LDO such as the ABLIC Inc. S-1711B1825-M6T1G is marked “Not For New Designs,” replacement selection becomes more than matching voltage numbers. The substitute must support the same two regulated rails, fit the SOT-23-6 footprint, meet dropout and quiescent-current needs, and behave correctly during enable, startup, and overload conditions.

For this device, the main candidate replacement part numbers are:

These ABLIC S-1721 series alternatives are relevant because they are also dual-output linear regulator ICs in compact SOT-23-6 packaging. However, output order, control logic, pin assignment, and device option codes must be checked before direct substitution, especially in existing PCB layouts.

What the ABLIC Inc. S-1711B1825-M6T1G Provides in the Original Design

The S-1711B1825-M6T1G is a dual positive fixed-output linear regulator intended for low-power systems that require two stable supply rails from one input source. It integrates two LDO channels in a SOT-23-6 package, reducing board area compared with using two separate regulators.

ParameterS-1711B1825-M6T1G Engineering Relevance
ManufacturerABLIC Inc.
FunctionDual positive fixed-output linear voltage regulator
Output voltages1.8V and 2.5V fixed outputs
Output current150mA per regulator channel
Input voltage max6.5V
Dropout voltage0.39V max at 150mA, 0.36V max at 150mA
Quiescent current1µA typical class, useful for battery-powered standby operation
Supply current max90µA
PSRR70dB at 1kHz, helpful for suppressing low-frequency input ripple
Control featureEnable function
ProtectionOver-current protection
PackageSOT-23-6 surface-mount
Operating temperature-40°C to +85°C
ComplianceRoHS3 compliant, REACH unaffected, MSL 1

The combination of 1.8V and 2.5V outputs makes the S-1711B1825-M6T1G suitable for mixed-voltage digital and analog sections, such as MCU core rails, sensor interfaces, memory support rails, portable instruments, and small wireless modules. Its low quiescent current supports designs that spend long periods in sleep mode.

For replacement evaluation, the main concerns are not only voltage and current ratings. The 1.8V and 2.5V rails may power different IC domains, so swapped output order can cause board-level incompatibility. The enable pin behavior must also be confirmed because a different enable polarity or internal discharge option can affect startup sequencing. Since the original device is in SOT-23-6, mechanical compatibility depends on both package outline and pin mapping, not package name alone.

Candidate ABLIC S-1721 Replacements for S-1711B1825-M6T1G

The S-1721A2518-M6T1U S-1721A2518-M6T1U S-1721A2518-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 46810 , S-1721E1825-M6T1U S-1721E1825-M6T1U S-1721E1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 40849 , and S-1721A1825-M6T1U S-1721A1825-M6T1U S-1721A1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 37336 are practical candidates when looking for an S-1711B1825-M6T1G equivalent or alternative dual LDO regulator. They are closest when the design requirement is a compact ABLIC dual-output LDO with 1.8V and 2.5V rails, but each option should be validated against the original schematic and PCB footprint.

ManufacturerPart NumberKey SpecificationsProduct FeaturesTypical ApplicationsWhy It Can Replace the Original PartMain Differences or LimitationsRecommended Usage
ABLIC Inc. S-1721A1825-M6T1U S-1721A1825-M6T1U S-1721A1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 37336 Dual fixed LDO; 1.8V/2.5V output combination; SOT-23-6; low-power regulator familyDual outputs, compact package, enable/control option depending on suffixBattery devices, sensor modules, MCU peripheral rails, compact embedded boardsSame nominal output-voltage pair as S-1711B1825-M6T1G and same general package classBelongs to S-1721 series, so pinout, enable logic, output discharge, dropout, and capacitor requirements must be checkedBest first candidate when the PCB expects 1.8V and 2.5V rails in the same functional arrangement
ABLIC Inc. S-1721E1825-M6T1U S-1721E1825-M6T1U S-1721E1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 40849 Dual fixed LDO; 1.8V/2.5V output combination; SOT-23-6Same voltage combination with a different option code from A-version devicesDesigns needing the same two regulated rails but possibly different control behaviorMaintains the same nominal voltage pair and ABLIC dual-LDO architectureThe “E” option may indicate different device behavior or pin/control configuration versus “A” or “B”; direct drop-in use requires datasheet confirmationSuitable when electrical rails match but the design can tolerate or requires the E-option behavior after verification
ABLIC Inc. S-1721A2518-M6T1U S-1721A2518-M6T1U S-1721A2518-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 46810 Dual fixed LDO; 2.5V/1.8V output combination; SOT-23-6Same two voltage values but likely reversed output-code orderRedesigns, alternate PCB revisions, or circuits where output routing can be changedProvides the same required voltage levels and dual-output integrationOutput order may differ from S-1711B1825-M6T1G; risk of applying 2.5V to a 1.8V rail if used without layout reviewBetter for new layouts or controlled rework where rail assignment and pin mapping are verified before assembly

Among the three candidates, S-1721A1825-M6T1U S-1721A1825-M6T1U S-1721A1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 37336 is usually the most natural starting point because its voltage code matches the 1.8V/2.5V order of S-1711B1825-M6T1G. S-1721E1825-M6T1U S-1721E1825-M6T1U S-1721E1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 40849 is also relevant for the same voltage pair but requires closer review of the option letter. S-1721A2518-M6T1U S-1721A2518-M6T1U S-1721A2518-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 46810 can still be useful, but it should be treated as an alternative rather than an assumed drop-in replacement because the 2.5V/1.8V coding may correspond to reversed output assignment.

Engineering Comparison of S-1711B1825-M6T1G Replacement Options

Choosing between S-1721A1825-M6T1U S-1721A1825-M6T1U S-1721A1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 37336 , S-1721E1825-M6T1U S-1721E1825-M6T1U S-1721E1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 40849 , and S-1721A2518-M6T1U S-1721A2518-M6T1U S-1721A2518-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 46810 depends on how much of the original design must remain unchanged. In an existing PCB, pin compatibility and rail order usually dominate the decision. In a redesign, dropout, quiescent current, sourcing status, and package availability may carry more weight.

Decision FactorS-1721A1825-M6T1US-1721E1825-M6T1US-1721A2518-M6T1UEngineering Interpretation
Electrical compatibility with S-1711B1825-M6T1GStrong candidate because the voltage pair is 1.8V/2.5VStrong voltage match, but option-code behavior must be reviewedSame voltage values, but likely reversed orderVoltage values alone are not enough; confirm which physical pin provides each rail
Mechanical compatibilitySOT-23-6 package classSOT-23-6 package classSOT-23-6 package classPackage outline may match, but land pattern and pinout must be compared before drop-in approval
Output rail assignmentLikely closer to original 1.8V/2.5V arrangementLikely same voltage pair, option-dependent behavior2.5V/1.8V code suggests possible rail reversalMisassigned rails can damage low-voltage ICs or cause unstable startup
Control and enable behaviorMust compare A-option behavior with S-1711B optionE-option needs closer logic and function reviewA-option behavior still requires verificationEnable threshold, active polarity, and discharge behavior can affect sequencing
Performance differencesExpected to be similar dual-LDO class, but dropout and PSRR must be verifiedSimilar voltage class with possible functional differencesSimilar family, but routing impact may dominateUse datasheet values at actual load current, not only nominal ratings
Reliability and lifecycleNewer alternative family may support future sourcing better than Not For New Designs originalUseful if A-version supply is limited or E-option matches design needsUseful for redesigned boards or alternate BOM strategyLifecycle status should be checked together with approved vendor availability
Package availabilityTape & reel suffix supports production assemblyTape & reel suffix supports production assemblyTape & reel suffix supports production assemblyConfirm MOQ, date code, and authorized supply channel
Cost considerationsOften favorable if it avoids PCB changesMay be acceptable if option behavior matches available stockMay add cost if rework or PCB revision is neededTotal replacement cost includes validation, not only unit price
Best-fit scenarioExisting design needing the closest S-1711B1825-M6T1G replacementExisting or revised design after confirming E-option compatibilityNew PCB revision or controlled substitution where output order can be handledThe best option depends on whether the design allows layout or sequencing changes
Main limitationNot automatically interchangeable without pinout reviewOption-code uncertainty requires extra validationHighest risk for direct drop-in use due to output orderAll candidates need schematic, PCB, and startup testing before approval

For most replacement workflows, S-1721A1825-M6T1U S-1721A1825-M6T1U S-1721A1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 37336 should be reviewed first as the closest S-1711B1825-M6T1G alternative. S-1721E1825-M6T1U S-1721E1825-M6T1U S-1721E1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 40849 is a strong secondary option when its option-code behavior matches the circuit requirements. S-1721A2518-M6T1U S-1721A2518-M6T1U S-1721A2518-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 46810 is better treated as a redesign or controlled-substitution candidate because the output voltage order may not align with the original rail assignment.

Before approving any substitute, compare the ABLIC datasheets for pin configuration, output capacitor requirements, enable function, dropout voltage at load, thermal behavior, and startup timing. Sample testing on the target PCB is recommended before production release.

For quotations and availability of S-1711B1825-M6T1G replacement parts, including S-1721A1825-M6T1U S-1721A1825-M6T1U S-1721A1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 37336 , S-1721E1825-M6T1U S-1721E1825-M6T1U S-1721E1825-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 40849 , and S-1721A2518-M6T1U S-1721A2518-M6T1U S-1721A2518-M6T1U ABLIC Inc. IC REG LIN 1.8V/2.5V 150MA SOT23 46810 , request pricing through IC-Components.com or contact Info@IC-Components.com.

Frequently Asked Questions

Can the S-1711B1825-M6T1G be used in a battery-powered IoT sensor node that requires two stable voltage rails and operates at -20°C ambient temperature?
Yes, the S-1711B1825-M6T1G is suitable for this application. Its operating temperature range extends down to -40°C, ensuring reliable performance at -20°C ambient conditions. With dual fixed 1.8V and 2.5V outputs and a quiescent current of just 1 µA, it efficiently supports low-power wireless modules commonly used in IoT sensors while maintaining stable supply rails without excessive dropout.
What are the critical design considerations when replacing an existing LDO in a space-constrained PCB with the S-1711B1825-M6T1G?
The S-1711B1825-M6T1G uses a compact SOT-23-6 package, making it ideal for high-density designs. However, ensure sufficient copper area for thermal dissipation during continuous 150mA loads, as the maximum junction-to-ambient thermal resistance is not specified beyond standard SOT-23 limitations. Verify input decoupling placement within 1mm of the VIN pin to maintain stability and minimize output ripple under transient loads.
Is the enable function on the S-1711B1825-M6T1G compatible with microcontroller GPIO logic levels without level shifting?
Yes, the enable pin accepts CMOS-level logic inputs compatible with standard 3.3V or 1.8V microcontrollers. The active-high enable feature allows direct connection to GPIO pins, enabling precise power sequencing for sleep/wake cycles in low-power systems. No external pull-up resistor is required if the MCU can drive the line low.
How does the dropout voltage of the S-1711B1825-M6T1G affect minimum input voltage requirements when delivering 150mA to both outputs simultaneously?
When both regulators operate at full load, the higher dropout occurs at 2.5V output (0.39V max), requiring a minimum input of 2.89V. If only one regulator is active, dropout drops to 0.36V, allowing lower input voltages. Designers must ensure input never falls below 2.89V under worst-case simultaneous loading to avoid brownout conditions.
Can the S-1711B1825-M6T1G replace the TI TPS70918 and TPS70925 in a legacy industrial controller board?
While functionally similar, direct replacement requires verification of output accuracy, noise characteristics, and layout compatibility. The S-1711 offers better PSRR (70dB vs ~60dB typical) but lacks adjustable versions. Thermal performance and long-term drift may differ; test under sustained load and verify no interference with analog sections due to improved ripple rejection.
What precautions should be taken when soldering the S-1711B1825-M6T1G in mass production using reflow profiling?
The device has an MSL rating of 1, allowing unlimited shelf life before assembly. However, follow JEDEC J-STD-020 guidelines: peak reflow temperature must not exceed 260°C for less than 10 seconds. Exceeding this may compromise bond integrity. Use a nitrogen-assisted profile to reduce oxidation and ensure consistent solder joint formation across batches.
Are there any known limitations when using the S-1711B1825-M6T1G in automotive-grade applications despite its industrial temperature range?
No, the S-1711B1825-M6T1G is not qualified for AEC-Q100 automotive standards. It is designed for industrial environments (-40°C to 85°C TA). In automotive applications requiring functional safety or extended temperature cycling, consider ABLIC’s automotive-specific variants or alternative qualified parts from other manufacturers.
How does the overcurrent protection mechanism work in the S-1711B1825-M6T1G, and what happens during a short-circuit event?
The S-1711B1825-M6T1G features built-in overcurrent protection that limits output current to approximately 150mA per regulator. During a short circuit, the IC reduces conduction to prevent damage, resulting in minimal output voltage drop. This protects downstream components without tripping, though continuous shorted operation may cause elevated die temperature and require thermal derating.
What is the recommended bypass capacitor configuration for minimizing output noise in precision ADC circuits powered by the S-1711B1825-M6T1G?
For best noise performance, use a 1µF ceramic capacitor with X5R or X7R dielectric on each output. Place capacitors as close as possible to the OUT pins with short traces. Avoid Y5V dielectrics due to capacitance variation with DC bias. This configuration leverages the IC’s 70dB PSRR at 1kHz to suppress switching noise from adjacent digital circuitry.
Can the two regulators in the S-1711B1825-M6T1G be independently enabled or do they share a common control signal?
Both regulators share a single enable pin. There is no independent shutdown capability—when disabled, all outputs are turned off simultaneously. This simplifies control logic but prevents individual rail sequencing. Designers must account for correlated turn-on/turn-off behavior in power-sensitive applications requiring staggered startup.
Is the S-1711B1825-M6T1G suitable for use in a medical wearable device that undergoes frequent sterilization?
The device itself is RoHS compliant and unaffected by REACH regulations, indicating chemical safety. However, sterilization methods like UV, ethylene oxide, or autoclaving are not validated by ABLIC. Physical exposure to such processes may degrade packaging or solder joints over time. Mount the IC away from direct contact points and avoid aggressive cleaning protocols post-assembly.
What trade-offs exist between using the S-1711B1825-M6T1G versus discrete resistor-divider solutions for generating fixed voltages?
Unlike discrete dividers, the S-1711B1825-M6T1G provides tightly regulated outputs (±2% typical accuracy) with low noise and high PSRR, improving system reliability. However, it consumes slightly more power (1 µA Iq) than ideal resistor networks (nanoamp range). For ultra-low-power battery devices with relaxed voltage tolerance, discrete solutions may offer better efficiency.
Does the S-1711B1711B1825-M6T1G support hot-swapping on the input side without damaging internal circuitry?
No, the S-1711B1825-M6T1G does not include hot-swap protection. Applying a voltage greater than 6.5V at VIN—even momentarily—can permanently damage the device. Ensure input transients remain within absolute maximum ratings during plug-in events. Add series current-limiting resistors or use external hot-swap controllers in systems where live insertion is required.
How does the PSRR of the S-1711B1825-M6T1G compare to newer regulators like the S-1721 series in high-impedance sensor interfaces?
The S-1711B1825-M6T1G achieves 70dB PSRR at 1kHz, which is adequate for most digital systems. However, the S-1721 series offers up to 80dB PSRR at the same frequency, providing superior suppression of switching noise from nearby buck converters. For sensitive analog front-ends, upgrading to S-1721 may reduce noise coupling and improve measurement accuracy.
What layout practices are essential to maintain regulation stability when routing traces near noisy digital signals with the S-1711B1825-M6T1G?
Keep analog ground returns separate from digital grounds at the regulator’s GND pin. Route input and output traces on different layers with solid ground planes underneath. Maintain at least 3x the trace width separation between regulator traces and high-speed digital lines to minimize capacitive crosstalk. This preserves loop integrity and ensures consistent performance under EMI stress.

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