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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

onsemi ILC7084AIM5ADJX

Name: ILC7084AIM5ADJX
Brand: onsemi
SKU: ILC7084AIM5ADJX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ILC7084AIM5ADJX

Manufacturer:: onsemi

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ILC7084AIM5ADJX.pdf

Description:: IC REG LIN POS ADJ 150MA 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ILC7084AIM5ADJX from Fairchild Semiconductor is an adjustable-output 150mA low-dropout (LDO) voltage regulator in SOT-23-5 package, featuring ultra-low 1mV/mA dropout, 40µV_RMS output noise, 85dB ripple rejection at 1kHz, ±3% output voltage accuracy, and integrated overcurrent/overtemperature protection. It serves as a high-performance power supply for RF-sensitive analog and mixed-signal circuits in portable wireless systems.

For engineers reviewing the ILC7084AIM5ADJX datasheet, pinout, applications, or equivalent options, key selection criteria include its CMOS-based RF-LDO™ architecture, adjustable feedback pin (V_ADJ) enabling 2.5V–12V output programming, low-noise operation with optional C_NOISE bypass, and compatibility with zero-ESR ceramic capacitors without stability compromise.

Technical Context

The ILC7084AIM5ADJX employs a transconductance amplifier output stage with internal dominant-pole/compensating-zero compensation, explicitly designed to incorporate-rather than eliminate-the output capacitor pole for stable operation with low-ESR ceramics. Its bandgap reference and error amplifier are powered from a bootstrapped regulated output rail, enabling exceptional line transient response and >85dB input ripple rejection.

This architecture delivers high peak current capability (500mA), fast load transient recovery (<40mV deviation), and shutdown current <2µA via ON/OFF pin control. The device operates across –40°C to +85°C ambient, supports input voltages up to 13V, and maintains regulation down to a 4mV transition region before dropout.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	150mA continuous; enables powering of RF front-end ICs, ADCs, and low-power microcontrollers without thermal derating under typical PCB layout.
Dropout Voltage	150mV at 150mA load; allows operation from single-cell Li-ion (3.0V min) while regulating 2.85V outputs with margin.
Output Noise	40µV_RMS (300Hz–50kHz); meets stringent noise requirements for RF receivers, PLL VCO supplies, and precision sensor signal chains.
Ripple Rejection	85dB at 1kHz; suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuitry.
Feedback Voltage	1.255V (typical) at V_ADJ; sets output via external resistor divider (V_OUT = 1.255V × (R1/R2 + 1)), supporting precise custom voltage rails.
Shutdown Current	<2µA at V_ON/OFF ≤ 0.6V; extends battery life in sleep modes of handheld devices and IoT endpoints.
Input Voltage Range	2V to 13V; accommodates wide-input industrial supplies and multi-cell battery configurations without external pre-regulation.

Pinout & Package

ILC7084AIM5ADJX is housed in a 5-lead SOT-23-5 surface-mount package (JEDEC MO-178AA, EIAJ SC-74A), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and 0.95mm lead pitch. Thermal resistance θ_JA = 333°C/W enables 195mW max power dissipation at 85°C ambient.

Pin/Terminal	Circuit Role	Design Meaning
1 - VIN	Unregulated input supply	Accepts 2–13V; must be decoupled with ≥1µF ceramic capacitor close to pin to ensure stability and line transient immunity.
2 - GND	Local ground reference	Return path for C_OUT and C_NOISE; requires dedicated local ground trace separate from main system ground plane to minimize noise coupling.
3 - ON/OFF	Enable/disable control input	Logic-low (≤0.6V) disables regulator; logic-high (≥1.5V) enables; includes hysteresis for noise immunity on slow-rising signals.
4 - V_ADJ	Adjustable feedback node	Connects to resistor divider; 1.255V reference enables precise output programming; no capacitor allowed on this pin to prevent oscillation.
5 - V_OUT	Regulated output	Delivers low-noise, low-dropout output; requires ≥1µF low-ESR ceramic capacitor directly between this pin and GND pin 2.

Key Features

Feature	Design Value
RF-LDO™ Architecture	Transconductance output stage with pole-zero compensation ensures unconditional stability with zero-ESR ceramic capacitors, eliminating need for costly tantalum alternatives.
Ultra-Low Noise	40µV_RMS noise and optional C_NOISE pin enable sub-100µV noise floors required by GSM/UMTS receiver LNA and mixer bias supplies.
High Ripple Rejection	85dB at 1kHz and 60dB at 1MHz suppresses switching artifacts from buck converters feeding RF subsystems without additional filtering.
Fast Transient Response	Dynamic load regulation <40mV for 1mA→150mA steps; maintains voltage integrity during burst-mode transmission in cellular modems.
Integrated Protection	Thermal shutdown (150°C trip) and short-circuit current limiting (600mA) provide robust fault tolerance in unattended embedded deployments.

Applications

Cellular Baseband Power	Wireless Sensor Node Core Supply
Use Scenario: Powers baseband processor and RF transceiver in 2G/3G feature phones where battery voltage varies from 4.2V (full) to 3.0V (discharged). IC Role / Device Role / Timing Role: Adjustable LDO delivering stable 2.85V core voltage with ultra-low noise to prevent digital switching noise from corrupting RF receive sensitivity. Use Value: Enables direct battery connection without intermediate buck converter, reducing BOM count and PCB area while maintaining >85dB PSRR at critical 1–10kHz IF frequencies.	Use Scenario: Supplies ultra-low-power MCU and BLE radio in coin-cell–powered environmental sensors operating for years on a single battery. IC Role / Device Role / Timing Role: Low-quiescent-current (100µA at 100mA) LDO providing 3.3V rail with fast shutdown (<2µA) during deep-sleep intervals. Use Value: Extends battery life by minimizing no-load ground current and enabling rapid wake-up from shutdown without output voltage overshoot.
Portable Medical Instrument Analog Front-End	Industrial Handheld Scanner Imaging Chain
Use Scenario: Powers precision op-amps, ADC drivers, and 16-bit SAR ADC in portable ECG monitors requiring clean, stable bias. IC Role / Device Role / Timing Role: Low-noise (40µV_RMS) LDO with C_NOISE bypass pin used to achieve <100µV noise floor for microvolt-level biopotential signal acquisition. Use Value: Eliminates need for post-regulation LC filtering, reducing component count and avoiding resonance-induced instability in compact medical enclosures.	Use Scenario: Supplies CCD/CMOS image sensor and correlated double sampler in rugged barcode scanners exposed to temperature cycling and ESD events. IC Role / Device Role / Timing Role: Thermally protected (150°C shutdown) LDO delivering 5.0V at 150mA with high peak current (500mA) for sensor reset pulses. Use Value: Prevents thermal runaway during extended scanning sessions in hot warehouses while maintaining tight ±3% output accuracy across –20°C to +70°C operating range.

Cellular Baseband Power

Wireless Sensor Node Core Supply

Use Scenario: Powers baseband processor and RF transceiver in 2G/3G feature phones where battery voltage varies from 4.2V (full) to 3.0V (discharged).

IC Role / Device Role / Timing Role: Adjustable LDO delivering stable 2.85V core voltage with ultra-low noise to prevent digital switching noise from corrupting RF receive sensitivity.

Use Value: Enables direct battery connection without intermediate buck converter, reducing BOM count and PCB area while maintaining >85dB PSRR at critical 1–10kHz IF frequencies.

Use Scenario: Supplies ultra-low-power MCU and BLE radio in coin-cell–powered environmental sensors operating for years on a single battery.

IC Role / Device Role / Timing Role: Low-quiescent-current (100µA at 100mA) LDO providing 3.3V rail with fast shutdown (<2µA) during deep-sleep intervals.

Use Value: Extends battery life by minimizing no-load ground current and enabling rapid wake-up from shutdown without output voltage overshoot.

Portable Medical Instrument Analog Front-End

Industrial Handheld Scanner Imaging Chain

Use Scenario: Powers precision op-amps, ADC drivers, and 16-bit SAR ADC in portable ECG monitors requiring clean, stable bias.

IC Role / Device Role / Timing Role: Low-noise (40µV_RMS) LDO with C_NOISE bypass pin used to achieve <100µV noise floor for microvolt-level biopotential signal acquisition.

Use Value: Eliminates need for post-regulation LC filtering, reducing component count and avoiding resonance-induced instability in compact medical enclosures.

Use Scenario: Supplies CCD/CMOS image sensor and correlated double sampler in rugged barcode scanners exposed to temperature cycling and ESD events.

IC Role / Device Role / Timing Role: Thermally protected (150°C shutdown) LDO delivering 5.0V at 150mA with high peak current (500mA) for sensor reset pulses.

Use Value: Prevents thermal runaway during extended scanning sessions in hot warehouses while maintaining tight ±3% output accuracy across –20°C to +70°C operating range.

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable-output LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1826T-ADJ/DC	Higher quiescent current (120µA vs. 100µA at 100mA), lower PSRR (70dB @ 1kHz), fixed 1.2V feedback voltage.	Lacks C_NOISE pin; less suitable for RF-sensitive designs requiring sub-50µV noise.	Prefer ILC7084AIM5ADJX when noise floor and PSRR are critical; MCP1826T-ADJ/DC acceptable for cost-sensitive non-RF applications.
TLS850F2BTV50	Automotive-grade AEC-Q100 qualified, higher input voltage (40V), but larger SOIC-8 package and 120µV_RMS noise.	Designed for automotive infotainment power rails; over-specified for portable consumer electronics.	Choose ILC7084AIM5ADJX for space-constrained portable designs; TLS850F2BTV50 only if automotive qualification and 40V input tolerance are mandatory.

Compared with MCP1826T-ADJ/DC and TLS850F2BTV50, the ILC7084AIM5ADJX uniquely combines SOT-23-5 footprint, 40µV_RMS noise, and 85dB PSRR-enabling RF-grade power delivery in minimal board area without thermal or noise compromises.

Availability

ILC7084AIM5ADJX is available at Aetrix Electronics and suitable for cellular baseband power, wireless sensor node core supply, portable medical instrument analog front-end, and industrial handheld scanner imaging chain applications requiring stable component supply across production lifecycles.

Supply support for ILC7084AIM5ADJX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Fairchild Semiconductor was a leading designer of high-performance analog and power ICs, acquired by ON Semiconductor in 2016; its legacy LDO portfolio remains widely deployed in portable electronics.

The ILC7084AIM5ADJX belongs to the RF-LDO™ family, engineered specifically for noise-sensitive wireless communication systems requiring simultaneous low dropout, low quiescent current, and high power supply rejection in miniature packages.

FAQ

What is the minimum input voltage required for ILC7084AIM5ADJX to regulate a 3.3V output?

The ILC7084AIM5ADJX requires input voltage ≥ V_OUT + V_DO, where V_DO = 150mV at 150mA load. For a 3.3V output at full load, minimum input is 3.45V. At lighter loads (e.g., 10mA), dropout drops to 25mV, allowing regulation from 3.325V. Always verify against worst-case junction temperature and load conditions per the datasheet's dropout curves.

Can I use a tantalum capacitor instead of ceramic for C_OUT with ILC7084AIM5ADJX?

Yes, but only low-ESR tantalum capacitors (≤0.4Ω) such as AVX TPS or KEMET T495 series are stable with ILC7084AIM5ADJX. Ceramic capacitors are strongly preferred due to lower cost, smaller size, non-polarity, and guaranteed zero-ESR stability-tantalum introduces risk of ESR-related oscillation if not strictly selected and derated.

How does the C_NOISE pin on ILC7084AIM5ADJX reduce output noise?

The C_NOISE pin connects to a high-impedance node inside the bandgap reference circuit. Adding a 0.01µF ceramic capacitor from C_NOISE to GND shunts high-frequency reference noise, lowering total output noise to 40µV_RMS. Larger values improve noise reduction but slow ON/OFF turn-on/turn-off response; omitting C_NOISE increases noise to ~60µV_RMS.

Is ILC7084AIM5ADJX pin-compatible with the fixed-output ILC7083 series?

No. While both use SOT-23-5 packaging, ILC7084AIM5ADJX has V_ADJ on pin 4, whereas ILC7083 fixed versions have C_NOISE on pin 4. Swapping them causes functional failure: connecting a fixed-output ILC7083's C_NOISE pin to an ILC7084AIM5ADJX's V_ADJ divider will destabilize regulation. PCB layout must match the specific variant.

What thermal derating applies to ILC7084AIM5ADJX at 85°C ambient temperature?

At 85°C ambient, maximum package power dissipation is limited to 195mW (PD_MAX = (150°C − 85°C)/333°C/W). For a 5V output from 6V input, max sustainable output current is I_OUT(MAX) < 195mW / (6V − 5V) = 195mA-within the 150mA rated limit. No derating needed at 150mA unless input-output differential exceeds 1.3V.

ILC7084AIM5ADJX Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Adjustable

Number of Regulators:: 1

Voltage - Input (Max):: 13V

Voltage - Output (Min/Fixed):: 2.5V

Voltage - Output (Max):: 12V

Voltage Dropout (Max):: 0.3V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 220 µA

Current - Supply (Max):: 280 µA

PSRR:: 85dB ~ 60dB (1kHz ~ 1MHz)

Control Features:: Enable

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

ILC7084AIM5ADJX FAQ

1.How can I place an order for ILC7084AIM5ADJX through Aetrix?

Please submit a Request for Quotation (RFQ) for ILC7084AIM5ADJX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ILC7084AIM5ADJX reliable?

The price and inventory of ILC7084AIM5ADJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ILC7084AIM5ADJX is usually 5 days.

3.What payment methods are accepted for ILC7084AIM5ADJX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ILC7084AIM5ADJX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ILC7084AIM5ADJX?

ILC7084AIM5ADJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ILC7084AIM5ADJX order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ILC7084AIM5ADJX?

For technical support, including ILC7084AIM5ADJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ILC7084AIM5ADJX requirements.

6.How does Aetrix verify that ILC7084AIM5ADJX is sourced from the original manufacturer or authorized distributors?

All ILC7084AIM5ADJX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ILC7084AIM5ADJX meets industry standards.

7.What is the process for return or replacement of ILC7084AIM5ADJX?

All ILC7084AIM5ADJX units undergo pre-shipment inspection (PSI). If there is an issue with ILC7084AIM5ADJX, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ILC7084AIM5ADJX part is unused and in its original packaging.

Return procedure for ILC7084AIM5ADJX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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