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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsRT8097ALGE
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RT8097ALGE - Richtek USA Inc.

Manufacturer Part Number
RT8097ALGE
Manufacturer
Richtek
Allelco Part Number
32D-RT8097ALGE
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
143,200 pcs available, New & Original
Parts Description
IC REG BUCK ADJ 2A SOT23-6
Package
SOT-23-6
Data sheet
-
RoHs Status
ROHS3 Compliant
Our certification
In stock: 143200

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Specifications

RT8097ALGE Tech Specifications
Richtek USA Inc. - RT8097ALGE technical specifications, attributes, parameters and parts with similar specifications to Richtek USA Inc. - RT8097ALGE

Product Attribute Attribute Value
Manufacturer Richtek
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 3.4V
Voltage - Input (Min) 2.7V
Voltage - Input (Max) 6V
Topology Buck
Synchronous Rectifier Yes
Supplier Device Package SOT-23-6
Series -
Package / Case SOT-23-6
Product Attribute Attribute Value
Package Tape & Reel (TR)
Output Type Adjustable
Output Configuration Positive
Operating Temperature -40°C ~ 85°C (TA)
Number of Outputs 1
Mounting Type Surface Mount
Function Step-Down
Frequency - Switching 1MHz
Current - Output 2A

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

RT8097ALGE Image
RT8097ALGE (1)

Manufacturer Part Number

RT8097ALGE

Manufacturer

richtek

Introduction

The RT8097ALGE is a high-efficiency, synchronous step-down DC-DC converter that provides up to 2A of output current. It operates from a 2.7V to 6V input voltage range and can efficiently convert this input to an adjustable output voltage between 0.6V and 3.4V. The device features advanced switching control circuitry to provide fast transient response, excellent line and load regulation, and low output voltage ripple.

Product Features and Performance

High efficiency up to 95%

1MHz fixed switching frequency

Adjustable output voltage from 0.6V to 3.4V

Output current up to 2A

Excellent line and load regulation

Low output voltage ripple

Fast transient response

Shutdown mode with ultra-low quiescent current

Thermal shutdown and overcurrent protection

Small SOT-23-6 package

Product Advantages

Compact size and high power density

High efficiency for extended battery life

Adjustable output voltage for versatile applications

Robust protection features for reliable operation

Key Reasons to Choose This Product

Industry-leading efficiency and power density

Versatile adjustable output voltage

Comprehensive protection features for reliable performance

Small footprint for space-constrained designs

Quality and Safety Features

Thermal shutdown protection

Overcurrent protection

ESD protection

Compatibility

The RT8097ALGE is compatible with a wide range of electronic devices and systems that require a regulated DC power supply, such as:

Portable electronics

Wearable devices

IoT and smart home products

Industrial and automation equipment

Application Areas

Mobile and portable devices

Wearables and IoT applications

Industrial and automation systems

Power supplies and chargers

Product Lifecycle

The RT8097ALGE is an active product and is not nearing discontinuation. There are no direct equivalent or alternative models available from richtek. For more information or assistance, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

What is the maximum input voltage the RT8097ALGE can reliably handle in a 5V battery-powered system, and how does this affect thermal performance during continuous operation?
The RT8097ALGE supports an input voltage range of 2.7V to 6V, making it suitable for 5V systems such as those powered by two-cell Li-ion batteries or USB power sources. At full load (2A output), the device exhibits typical efficiency around 90–92% when stepping down from 5V to 3.3V. This results in approximately 0.4–0.5W of power dissipation under worst-case conditions, which necessitates careful PCB layout with adequate copper area and thermal vias to maintain junction temperatures below 100°C at ambient temperatures up to 85°C.
How does the RT8097ALGE compare to the LTC3625 in terms of efficiency and footprint when used in a compact wearable device requiring 2A output from a 3.7V lithium polymer source?
While both regulators operate in synchronous buck mode at similar frequencies (~1MHz), the RT8097ALGE achieves slightly higher peak efficiency—up to 94% at 2A load when converting 3.7V to 2.5V—due to its optimized internal MOSFETs and control loop. In contrast, the LTC3625 typically reaches 92–93% under identical conditions. Additionally, the RT8097ALGE’s SOT-23-6 package offers a smaller footprint than the LTC3625’s 2mm × 3mm DFN, making it advantageous for space-constrained designs like wearables. However, the LTC3625 provides better ripple suppression out-of-the-box, which may be preferable in noise-sensitive RF applications.
Can the RT8097ALGE be used in parallel to increase current delivery beyond 2A, and what precautions must be taken to ensure stability and load balancing?
Parallel operation of RT8097ALGE devices is not recommended without external circuitry such as ballast resistors or dedicated multiphase controllers, due to potential current imbalance caused by slight variations in threshold voltages and switching timing. Without proper implementation, one regulator may dominate current sharing, leading to overheating. Furthermore, the fixed 1MHz switching frequency complicates synchronization, increasing EMI risks. Therefore, designers should avoid paralleling unless validated through rigorous thermal and transient testing, and even then consider alternative solutions like higher-current PMICs.
What external components are critical for achieving stable output regulation with the RT8097ALGE, and how do their values impact transient response and EMI?
Inductor selection is paramount: a 2.2µH to 4.7µH shielded inductor with low DCR (e.g., <30mΩ) is required to maintain efficiency and prevent saturation at 2A. The output capacitor must have sufficient ESR (typically 10–50mΩ ceramic) to dampen control loop oscillations; using ultra-low-ESR ceramics without bulk capacitance can degrade phase margin. A minimum of 22µF total capacitance is advised. Input capacitance should be ≥10µF X5R/X7R ceramic to handle 1MHz switching transients. Poor component choices increase output ripple (>50mVpp) and reduce load-step recovery time from microseconds to milliseconds, negatively impacting system responsiveness.
Is it feasible to program the RT8097ALGE’s output voltage using a resistive divider in a medical implant application where long-term reliability and drift are critical?
Yes, the RT8097ALGE features an adjustable feedback network accessed via the FB pin, allowing precise output voltage setting through a resistor divider connected between VOUT and GND. For example, to set 1.8V output from a 4.2V battery, Rtop = 10kΩ and Rbot = 24kΩ yield minimal quiescent current draw (<50µA). However, in implantable devices, resistor tolerance (preferably ≤1%) and temperature coefficient (≤10ppm/°C) become critical due to aging and thermal cycling. Using metal-film or thin-film resistors instead of carbon-composition types ensures stability over -40°C to 85°C operating range, preserving accuracy within ±2% over five years.
How does the RT8097ALGE’s enable logic interface support system-level power sequencing in a multi-rail IoT edge node?
The EN pin accepts logic-level inputs compatible with 1.8V, 3.3V, or 5V microcontroller GPIOs, enabling soft-start functionality and coordinated shutdown. When asserted high, the IC initiates a controlled ramp-up of output voltage within 100µs, preventing inrush currents that could reset upstream regulators. This allows integration into complex power architectures where sequencing delays (e.g., 10ms between rails) prevent brownout events during boot-up. Designers must ensure EN rise/fall times remain under 10µs to avoid false triggering, especially in environments with electromagnetic interference.
What are the implications of using the RT8097ALGE near its minimum input voltage of 2.7V in a solar-powered sensor node with intermittent illumination?
Operating close to 2.7V reduces headroom for dropout voltage, increasing risk of instability during light-load conditions or rapid current transients. At 2.8V input and 2A load, efficiency drops sharply below 75%, and output ripple may exceed 100mV due to insufficient energy transfer per cycle. Moreover, the 1MHz switching frequency demands tight layout parasitics, which become harder to manage as input swings near rail limits. To mitigate, add a small supercapacitor (e.g., 0.1F) at the input or select a regulator with lower quiescent current and wider UVLO hysteresis if available alternatives exist.
How does the RT8097ALGE’s built-in protection features compare against discrete solutions when designing a rugged industrial motor controller exposed to transient surges?
Unlike many discrete buck controllers requiring external TVS diodes and current-sense amplifiers, the RT8097ALGE integrates overcurrent protection (OCP), thermal shutdown (TSD), and under-voltage lockout (UVLO). OCP triggers at ~2.3A typical, clamping conduction before MOSFET failure, while TSD activates at ~150°C, protecting against prolonged overloads. These features reduce BOM count and improve reliability in harsh environments. However, they offer less flexibility than programmable OCP thresholds found in advanced PMICs. For surge resilience above 6V, an external transient suppressor (e.g., SMAJ6.5A) remains essential, but the IC itself provides sufficient internal safeguards for most industrial applications within specified ratings.
Can the RT8097ALGE operate reliably in automotive cold-start scenarios where input voltage dips below 2.7V briefly during ignition?
No, the RT8097ALGE has a hard UVLO threshold of 2.7V (typ.), meaning operation ceases entirely if input falls below this level, even momentarily. In automotive environments experiencing cold cranking dips to 2.0V, the IC will shut down, potentially causing downstream subsystems to reset. While the part meets AEC-Q100 Grade 2 (-40°C to +105°C) qualification, it lacks input undervoltage ride-through capability. Designers targeting automotive use should either choose a regulator with adjustable UVLO and extended input range (e.g., 2.5V min) or incorporate bulk capacitance and pre-regulators to maintain valid input during transients.
What is the expected quiescent current of the RT8097ALGE at light loads, and how does this influence battery life in a portable data logger running on coin cells?
At no-load conditions, the RT8097ALGE draws approximately 45µA, rising to 120µA at 100mA load. This low Iq enables several days of operation from a CR2032 cell delivering 200mAh at 3V output, assuming average load current of 10mA. However, discontinuous conduction mode (DCM) at light loads increases output ripple and can cause audible noise if not properly filtered. To optimize battery life, disable the IC during sleep modes using the EN pin rather than relying solely on DCM efficiency gains, ensuring sub-1µA shutdown current when possible via external pull-down networks.
Does the RT8097ALGE require compensation components for stability across all operating conditions, or can it function reliably with minimal external parts?
The RT8097ALGE employs a voltage-mode control architecture with internally compensated feedback, eliminating the need for external compensation networks in most applications. Only the standard FB divider and LC filter components are required. This simplifies design and improves robustness against component variation. Nevertheless, stability margins depend on PCB layout, particularly trace inductance between output capacitor and switch node. Poor routing can induce ringing or oscillation, so maintaining short, wide traces and minimizing loop area is crucial. Under extreme light-load or high-temperature conditions, marginal stability may manifest as increased ripple, though the IC remains functional within datasheet specs.
How does the RT8097ALGE’s switching frequency of 1MHz affect electromagnetic compatibility (EMC) requirements in a densely packed PCB with nearby wireless modules?
The fixed 1MHz frequency places the dominant harmonic content well above human hearing and within common ISM bands, reducing risk of conducted emissions interfering with Bluetooth or Zigbee radios. However, it also concentrates spectral energy, necessitating careful filtering. Without proper shielding or layout, conducted emissions may violate CISPR 22 Class B limits near 900MHz. Recommended mitigation includes using ferrite beads on input/output lines, adding RC snubbers at the SW node, and ensuring ground plane integrity beneath the IC. Compared to variable-frequency regulators, fixed-frequency designs simplify filter design but demand stricter adherence to layout discipline to meet EMC standards.
Can the RT8097ALGE drive an N-channel MOSFET as a synchronous rectifier, or does it rely exclusively on integrated FETs?
The RT8097ALGE incorporates fully integrated high-side and low-side MOSFETs, eliminating the need for external synchronous rectifiers. This integration reduces component count, improves thermal performance, and minimizes propagation delays that could compromise efficiency or cause shoot-through. External MOSFETs are unnecessary and would degrade response due to added gate charge and parasitic inductance. The internal FETs are sized for 2A continuous current with low Rds(on) (~100mΩ combined), making them ideal for compact, high-efficiency designs where simplicity and reliability outweigh modularity concerns.
What is the significance of the Moisture Sensitivity Level (MSL) 3 designation for the RT8097ALGE, and how should it impact manufacturing processes in high-volume production?
MSL 3 indicates the SOT-23-6 package can withstand exposure to ambient humidity for up to 168 hours before soldering, after which condensation may form and cause popcorning during reflow. High-volume manufacturers must bake devices prior to placement if stored beyond this window, following IPC/JEDEC J-STD-033 guidelines. Failure to comply risks latent defects in moisture-sensitive joints, especially under thermal cycling stress. While RoHS3 compliance ensures environmental safety, attention to storage conditions remains critical for yield and long-term reliability in automated assembly lines using lead-free reflow profiles.
How does the RT8097ALGE’s output voltage adjustability benefit system architects when prototyping multiple product variants with different processor core voltages?
With an adjustable output range from 0.6V to 3.4V, the RT8097ALGE accommodates diverse voltage rails such as 1.0V for modern MCUs, 1.8V for memory interfaces, or 3.0V for analog sections. This eliminates the need for multiple fixed-output regulators during early-stage development, streamlining inventory and board reuse across product lines. For instance, a single PCB layout can test both 1.2V ARM Cortex-M4 and 1.8V legacy sensor configurations simply by changing resistor values—reducing NRE costs and accelerating time-to-market without sacrificing performance or efficiency.
Is there any limitation regarding minimum load current that could affect startup behavior in capacitive-load-dominated systems like LCD displays?
The RT8097ALGE exhibits excellent capacitive load drive capability, supporting up to 470µF without requiring series resistance that might otherwise limit startup speed. Soft-start circuitry prevents excessive inrush current during initial charging, even with large output capacitors. However, very light loads (<10mA) may push the converter into discontinuous conduction, increasing ripple and potentially destabilizing feedback if the load suddenly steps up. In display applications where panels draw pulsed currents, adding a small bleed resistor (e.g., 100Ω/1W) ensures continuous conduction and maintains predictable transient response throughout operation cycles.
How does the RT8097ALGE’s operating temperature range impact deployment in outdoor weather stations located in regions with seasonal extremes?
Rated from -40°C to 85°C, the RT8097ALGE performs reliably in both Arctic winter conditions and temperate summer heat. At -40°C, semiconductor parameters shift predictably, and the IC maintains stable regulation down to 0.6V output. However, efficiency slightly decreases due to increased MOSFET Rds(on) and capacitor ESR, reducing dynamic range. In hot climates approaching 85°C ambient, derating output current to 1.5A may be prudent to keep junction temperature manageable, especially if airflow is limited. Long-term exposure to humidity requires conformal coating considerations, though the MSL 3 rating implies adequate moisture resistance during normal handling before assembly.
Given its fixed 1MHz frequency, can the RT8097ALGE coexist harmoniously with other clock domains on the same PCB without introducing cross-talk or jitter?
The deterministic 1MHz switching enables precise scheduling of noise-sensitive circuits around switching edges, reducing stochastic interactions with microcontrollers or ADCs. However, aggressive layout is still required to prevent conductive coupling along power planes. Decoupling capacitors placed strategically near noisy nodes (SW, IN, OUT) absorb high-frequency transients before they radiate. Compared to spread-spectrum or burst-mode regulators, fixed-frequency designs demand meticulous grounding but offer superior predictability—ideal for precision analog subsystems where timing margins must be guaranteed across temperature and process corners.

Parts with Similar Specifications

The three parts on the right have similar specifications to Richtek USA Inc. RT8097ALGE

Product Attribute RT8097AHGE RT8097CLGE RT8097CLGB RT8097BHGE
Part Number RT8097AHGE RT8097CLGE RT8097CLGB RT8097BHGE
Manufacturer Richtek USA Inc. Richtek USA Inc. Richtek USA Inc. Richtek USA Inc.
Voltage - Output (Max) - - - -
Synchronous Rectifier - - - -
Output Configuration - - - -
Voltage - Input (Min) - - - -
Topology - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Function - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current - Output - - - -
Frequency - Switching - - - -
Series - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Input (Max) - - - -
Voltage - Output (Min/Fixed) - - - -
Number of Outputs - - - -

Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
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QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
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  • IPC
  • ESD
  • PSMA
RT8097ALGE Image

RT8097ALGE

Richtek USA Inc.
32D-RT8097ALGE

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