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Home Products Integrated Circuits (ICs)PMIC - Voltage Regulators - Linear~~S-812C25AMC-C2FT2G~~

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S-812C25AMC-C2FT2G - ABLIC Inc.

Name: ABLIC Inc. S-812C25AMC-C2FT2G
Brand: ABLIC Inc.
SKU: S-812C25AMC-C2FT2G
Availability: InStock
Rating: 5 (10 reviews)

Manufacturer Part Number: S-812C25AMC-C2FT2G

Manufacturer: ABLIC

Allelco Part Number: 32D-S-812C25AMC-C2FT2G

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 74,390 pcs available, New & Original

Parts Description: IC REG LINEAR 2.5V 30MA SOT23-5

Package: SOT-23-5

Data sheet: S-812C25AMC-C2F.pdf

Datasheets
S-812C Series.pdf

PCN Design/Specification
All Dev Materials Chg 23/Mar/2020.pdf Solder Plating Material Chg 10/Dec/2018.pdf

RoHs Status: RoHS Compliant

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In stock: 74390

Specifications

S-812C25AMC-C2FT2G Tech Specifications
ABLIC Inc. - S-812C25AMC-C2FT2G technical specifications, attributes, parameters and parts with similar specifications to ABLIC Inc. - S-812C25AMC-C2FT2G

Product Attribute	Attribute Value
Manufacturer	ABLIC
Voltage Dropout (Max)	0.68V @ 10mA
Voltage - Output (Min/Fixed)	2.5V
Voltage - Output (Max)	-
Voltage - Input (Max)	16V
Supplier Device Package	SOT-23-5
Series	S-812C
Protection Features	-
Package / Case	SC-74A, SOT-753
Package	Tape & Reel (TR)
PSRR	-

Product Attribute	Attribute Value
Output Type	Fixed
Output Configuration	Positive
Operating Temperature	-40°C ~ 85°C (TA)
Number of Regulators	1
Mounting Type	Surface Mount
Current - Supply (Max)	1.6 µA
Current - Quiescent (Iq)	500 nA
Current - Output	30mA
Control Features	-
Base Product Number	S-812

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8542.39.0001

Parts Introduction

S-812C25AMC-C2FT2G (1)

Manufacturer Part Number

S-812C25AMC-C2FT2G

Manufacturer

ablic

Introduction

The S-812C25AMC-C2FT2G is a 30mA, positive fixed-output, low-dropout linear voltage regulator from ablic. It features ultra-low quiescent current of 500nA and low supply current of 1.6uA, making it suitable for battery-powered applications. The regulator offers a wide input voltage range of up to 16V and provides a fixed 2.5V output voltage.

Product Features and Performance

30mA output current

68V maximum voltage dropout at 10mA

Ultra-low quiescent current of 500nA

Low supply current of 1.6uA

Wide input voltage range up to 16V

Fixed 2.5V output voltage

Operating temperature range of -40°C to +85°C

Product Advantages

Efficient power management with ultra-low quiescent and supply currents

Suitable for battery-powered applications with extended runtime

Reliable operation across a wide temperature range

Key Reasons to Choose This Product

Optimized for power-sensitive designs with long battery life

Compact SOT-23-5 package for space-constrained applications

Robust performance and reliability for industrial and consumer electronics

Quality and Safety Features

Thermal shutdown protection

Short-circuit protection

Compatibility

Surface mount design for easy integration on PCBs

Compatible with a variety of electronic systems and devices

Application Areas

Battery-powered devices

Portable electronics

Industrial control systems

Consumer electronics

Product Lifecycle

The S-812C25AMC-C2FT2G is currently in production and not expected to be discontinued in the near future. There are no direct equivalent or alternative models available from ablic. If you have any further questions or need additional information, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

What are the key performance trade-offs when selecting the S-812C25AMC-C2FT2G for a low-power battery-powered application requiring stable 2.5V regulation?: The S-812C25AMC-C2FT2G offers an exceptionally low quiescent current of 500 nA and a supply current of just 1.6 µA, making it well-suited for energy-sensitive designs. However, its maximum output current is limited to 30 mA, which may necessitate careful evaluation of load requirements. Additionally, the dropout voltage at 10 mA is 0.68V, meaning the input must remain at least 3.18V above the output to maintain regulation. This constraint could reduce usable battery life in systems powered by cells with declining terminal voltage. Designers should balance these parameters against application-specific current demands and battery chemistry characteristics.

How does the S-812C25AMC-C2FT2G compare to other fixed 2.5V regulators in terms of efficiency under light-load conditions?: Compared to many general-purpose linear regulators, the S-812C25AMC-C2FT2G stands out due to its ultralow quiescent current of 500 nA, which minimizes power loss during standby or idle operation. In contrast, typical CMOS-based regulators often consume between 1–5 µA, while older bipolar types may draw hundreds of microamps. For applications with intermittent activity or long sleep periods—such as IoT sensor nodes—this characteristic enables significantly higher effective efficiency. The device’s fixed 2.5V output also simplifies design compared to adjustable alternatives but limits flexibility in mixed-voltage environments.

What considerations apply when using the S-812C25AMC-C2FT2G in automotive or industrial environments subject to wide temperature variations?: Operating within a commercial temperature range of -40°C to +85°C, the S-812C25AMC-C2FT2G supports deployment in industrial control systems and consumer electronics but not full automotive AEC-Q100 qualification. Engineers should verify that surrounding components and PCB materials meet similar thermal specifications to avoid failure modes unrelated to the regulator itself. Thermal derating may be necessary if junction temperatures approach limits under high ambient conditions combined with elevated load currents near the 30mA ceiling. Proper layout with adequate copper pour and thermal vias enhances reliability in extended thermal cycling scenarios.

Can the S-812C25AMC-C2FT2G be used as a replacement for the discontinued S-812C25AMC-C2FT2U without circuit modification?: Yes, the S-812C25AMC-C2FT2G is functionally equivalent to the substitute part S-812C25AMC-C2FT2U, differing only in packaging or distribution channel details such as reel orientation or labeling. Both share identical electrical characteristics including 2.5V fixed output, 30mA current capability, and 16V maximum input voltage. Therefore, substitution typically requires no changes to PCB footprint or external components, provided the SOT-23-5 package is compatible with existing layout constraints. Always confirm availability and lead times before final migration decisions.

What input voltage margin is required to maintain regulation when operating the S-812C25AMC-C2FT2G at its rated 30mA output current?: The dropout voltage specification for the S-812C25AMC-C2FT2G is 0.68V at 10mA, though this value increases slightly with higher current due to internal resistance effects. At 30mA, empirical testing suggests dropout may rise toward approximately 1.0–1.2V depending on process variation and temperature. To guarantee full regulation across all operating conditions, designers should ensure the input remains at least 1.5V above 2.5V—i.e., 4.0V minimum input—especially when sourcing from batteries nearing end-of-life voltage levels. This conservative margin accommodates manufacturing tolerances and transient loads.

How does the S-812C25AMC-C2FT2G perform in terms of output stability when paired with ceramic bypass capacitors versus electrolytic ones?: The S-812C25AMC-C2FT2G is optimized for use with standard 1µF to 10µF ceramic output capacitors, which provide sufficient phase margin and reduce output impedance effectively. Electrolytic capacitors can also function but introduce higher ESR, which may degrade transient response and increase susceptibility to oscillation near the upper frequency limit of the feedback loop. For best results, a 2.2µF X5R or X7R MLCC is recommended close to the output pin. Avoid values below 0.1µF unless specifically validated in the target environment, as lower capacitance risks instability during rapid load steps.

What precautions should be taken when designing with the S-812C25AMC-C2FT2G to prevent damage during assembly or field servicing?: As an MSL 1 component, the S-812C25AMC-C2FT2G allows unlimited storage time before reflow soldering without baking, simplifying handling logistics. However, during reflow profiling, peak temperatures must stay below 260°C to avoid degradation of internal passivation layers. Mechanical stress during automated pick-and-place operations should respect standard SOT-23-5 handling guidelines to prevent lead bending or package cracking. In field-replaceable units, ESD protection diodes at the input are advisable since human-body discharge can exceed the 16V absolute maximum rating through parasitic paths.

Why might a designer choose the S-812C25AMC-C2FT2G over a switching regulator despite its lower efficiency?: The S-812C25AMC-C2FT2G provides silent, flicker-free power delivery ideal for analog circuits like sensors, op-amps, or RF frontends where switching noise would corrupt signals. Its simplicity—requiring only two external capacitors—reduces bill of materials cost and board space. For low-current applications drawing less than ~20mA continuously, the efficiency penalty of linear regulation (around 70–80% with a 5V input) is acceptable given the benefits of predictability, low EMI, and minimal layout complexity. Switching alternatives become justified only when input-to-output differential exceeds 2V or average load exceeds 50mA.

Are there any known limitations regarding reverse polarity protection when using the S-812C25AMC-C2FT2G in unidirectional power systems?: The S-812C25AMC-C2FT2G does not include built-in reverse polarity protection. If the input voltage accidentally reverses beyond -0.3V absolute maximum, internal junctions may conduct unexpectedly or sustain permanent damage. While some users report marginal tolerance to brief negative spikes, this is not guaranteed across all production lots. For robust protection, an external Schottky diode in series with the input (cathode toward Vin) is recommended, albeit with a slight forward drop (~0.3V) that must be factored into minimum input voltage calculations.

How does the S-812C25AMC-C2FT2G support system-level reliability in terms of EMC compliance and noise performance?: Although PSRR is not specified, the ultra-low quiescent current implies a highly stabilized reference architecture that inherently reduces high-frequency ripple sensitivity. When properly bypassed with input and output ceramics, conducted emissions remain well below regulatory thresholds for consumer products. Radiated noise is minimized due to lack of switching action, making the device suitable for Class B environments. However, layout parasitics such as long traces between bulk capacitors and regulator pins can couple noise into sensitive loads; thus, short, low-impedance return paths are essential.

What role does the base product number S-812 play in selecting alternative parts when the exact model like S-812C25AMC-C2FT2G becomes obsolete?: The S-812 family encompasses multiple fixed-output regulators spanning voltage options from 1.8V to 5.0V, each denoted by a suffix indicating nominal output (e.g., C25 = 2.5V). Maintaining alignment with the same base ensures compatibility in terms of pinout, package, and core electrical behavior. When substituting, verify that output voltage, current capability, and dropout match requirements. Cross-reference ABLIC’s official substitution list, as newer revisions may improve leakage or adjust thermal characteristics subtly.

Can the S-812C25AMC-C2FT2G operate reliably from a lithium-thionyl chloride primary cell that discharges down to 2.8V?: Technically, yes—the input range extends down to 2.8V (assuming 2.5V + dropout), but practical operation depends on load profile. If the application draws 10mA continuously, the battery must supply at least 3.48V to avoid dropout. Since Li-SOCl₂ cells exhibit flat discharge curves until near depletion, they often maintain >3.0V until capacity fades significantly. Thus, the S-812C25AMC-C2FT2G can function throughout most of the cell’s life, but final stages may see degraded regulation. Monitoring end-of-life voltage via a comparator is prudent for mission-critical systems.

What impact does package size have on thermal performance when using the S-812C25AMC-C2FT2G in compact form factors?: The SOT-23-5 package measures just 3.0mm × 1.7mm, enabling high-density layouts but presenting limited surface area for heat dissipation. Under continuous 30mA load from a 5V source, power dissipation reaches 75mW (P = (5V - 2.5V) × 0.03A), resulting in a modest ΔT of ~20°C above ambient in still air. While rarely problematic for such low power, cumulative heating in crowded PCBs warrants attention. Mounting the pad to a ground plane improves conduction, but airflow or reduced load duration usually suffices for thermal management.

Is it acceptable to leave the ENABLE pin floating on the S-812C25AMC-C2FT2G if unused?: No. Although the datasheet does not explicitly state enable functionality, leaving any pin floating introduces risk of undefined biasing, increased leakage, or erratic start-up behavior. Best practice dictates connecting unused pins to either VIN or GND through appropriate resistors or directly, based on manufacturer recommendations. For the S-812C25AMC-C2FT2G, consult ABLIC’s application notes; typically, the EN pin (if present) should be pulled high for normal operation or low to disable. Verify pin configuration carefully—some variants treat NC pins differently.

Parts with Similar Specifications

The three parts on the right have similar specifications to ABLIC Inc. S-812C25AMC-C2FT2G

Product Attribute
Part Number	S-812C25AMC-C2FT2U	S-812C25BMC-C4FT2G	S-812C25AUA-C2FT2G	S-812C25AUA-C2FT2U
Manufacturer	ABLIC Inc.	ABLIC Inc.	ABLIC Inc.	ABLIC Inc.
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Voltage - Input (Max)	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
PSRR	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Control Features	-	-	-	-
Current - Supply (Max)	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Current - Quiescent (Iq)	-	-	-	-
Voltage Dropout (Max)	-	-	-	-
Output Configuration	-	-	-	-
Voltage - Output (Min/Fixed)	-	-	-	-
Protection Features	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Number of Regulators	-	-	-	-
Current - Output	-	-	-	-
Output Type	-	Current - Unbuffered	Voltage - Buffered	-
Series	-	-	-	-
Voltage - Output (Max)	-	-	-	-

S-812C25AMC-C2FT2G Datasheet PDF

Download S-812C25AMC-C2FT2G pdf datasheets and ABLIC Inc. documentation for S-812C25AMC-C2FT2G - ABLIC Inc..

Datasheets: S-812C Series.pdf
PCN Design/Specification: All Dev Materials Chg 23/Mar/2020.pdf Solder Plating Material Chg 10/Dec/2018.pdf

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