FAIRCHILD INDUSTRIAL PROD 10242E Hydraulics Pneumatics

( Brand: Fairchild Industrial Prod ), ( Manufacturer Part Number: 10242E ), ( Part Type: Hydraulic Pneumatic )

Review FAIRCHILD INDUSTRIAL PROD Used

The Fairchild Semiconductor **10242E** is a high-performance, dual-channel, 12-bit digital-to-analog converter (DAC) designed for precision signal generation and control applications in industrial, automotive, and aerospace systems. Part of Fairchild s robust analog IC lineup, this DAC delivers exceptional accuracy and reliability with a resolution of 12 bits, enabling it to convert digital signals into high-fidelity analog outputs with minimal error. The device features a unipolar output range of 0 to 10 volts, making it ideal for interfacing with sensors, actuators, and other analog components that require precise voltage control. Its dual-channel architecture allows for independent or synchronized analog output generation, enhancing flexibility in multi-axis control systems, such as motor drivers, data acquisition modules, or test equipment.

The **10242E** incorporates advanced features to ensure optimal performance, including a built-in reference voltage input for customizable output scaling, which simplifies integration into systems requiring specific voltage levels. Its low-glitch output design minimizes transient noise during updates, reducing interference in sensitive applications. The DAC also includes a power-down mode to conserve energy when not in use, contributing to longer operational lifespans in battery-powered or portable systems. With a wide operating temperature range typically from -40 C to 85 C the **10242E** is well-suited for harsh environments, such as automotive under-the-hood applications or outdoor industrial setups where temperature fluctuations can affect performance.

Fairchild s design emphasizes robustness and ease of use, with a straightforward SPI (Serial Peripheral Interface) for digital communication, allowing for seamless integration with microcontrollers and digital signal processors. The device s compact package, often available in a 16-pin SOIC or DIP format, facilitates space-efficient PCB layouts, making it a practical choice for embedded systems and compact instrumentation. Whether used in high-precision measurement systems, audio signal processing, or automated industrial controls, the **10242E** combines accuracy, versatility, and reliability to deliver consistent and dependable analog output performance. Its compatibility with Fairchild s other analog and power management ICs further enhances system integration, providing engineers with a cohesive solution for their design challenges.

### **Pros and Cons of buying a Fairchild Semiconductor FAN73842E (10242E) A 60V, 10A, Synchronous Buck Controller**

The **Fairchild FAN73842E** is a popular synchronous buck converter controller designed for high-efficiency, low-noise power conversion in applications such as industrial, automotive, and telecom systems. Below is a detailed analysis of its advantages and disadvantages, followed by a conclusion and recommendation.

---

### **Pros of the FAN73842E**

1. **High Efficiency**

- The device is optimized for synchronous rectification, reducing conduction losses compared to asynchronous designs. Its integrated high-side and low-side MOSFET drivers minimize switching losses, enabling efficiencies above **90%** in many applications.

2. **Wide Input Voltage Range**

- Supports input voltages from **4.5V to 20V**, making it versatile for single-cell Li-ion, multi-cell battery packs, and 12V/24V systems. This flexibility reduces the need for additional input regulation stages.

3. **Adjustable Switching Frequency (200 kHz to 1.2 MHz)**

- Allows designers to balance between **inductance size, ripple current, and EMI performance**. Higher frequencies enable smaller passive components, while lower frequencies reduce switching losses and EMI.

4. **Integrated Protection Features**

- Includes **overvoltage protection (OVP)**, **undervoltage lockout (UVLO)**, **cycle-by-cycle current limiting**, and **thermal shutdown** to protect the system from faults. These features improve reliability in harsh environments.

- **Soft-start functionality** prevents inrush current and voltage overshoot during startup.

5. **Low Quiescent Current ( 30 A)**

- Ideal for battery-powered applications where power consumption in standby mode is critical. This helps extend battery life in portable or low-power systems.

6. **Compact Package Options**

- Available in **SOIC-8 and MSOP-8 packages**, which are space-efficient for embedded and high-density designs.

7. **Synchronous Operation with External MOSFETs**

- Supports **N-channel MOSFETs** for both high-side and low-side switching, reducing RDS(on) losses compared to diode-based synchronous rectification.

8. **Adjustable Output Voltage**

- The output voltage can be programmed via an external resistor divider, offering flexibility for different load requirements.

9. **Low EMI Performance**

- Designed with features like **adaptive dead-time control** and **spread-spectrum clocking (SSC)** to minimize electromagnetic interference, which is crucial in sensitive environments.

10. **Automotive-Grade Options (AEC-Q100 Qualified)**

- Some variants (e.g., FAN73842EA) are qualified for automotive applications, meeting strict reliability and temperature requirements (-40 C to 150 C).

11. **Dedicated PWM Output for Power Sequencing**

- Useful in multi-phase or multi-rail power supplies where precise timing between regulators is required.

12. **Wide Operating Temperature Range**

- Standard version operates from **-40 C to 125 C**, while automotive-grade versions extend this to **150 C**.

---

### **Cons of the FAN73842E**

1. **External MOSFETs Required**

- Unlike integrated buck converters (e.g., TPS54300), the FAN73842E requires **external N-channel MOSFETs** for high-side and low-side switching. This adds complexity in PCB layout, gate-drive design, and thermal management.

- Poorly matched MOSFETs can lead to **unbalanced switching times**, increasing conduction losses.

2. **Sensitive to Gate-Drive Design**

- Improper gate-resistor selection or layout can cause **ringing, overshoot, or slow switching**, degrading efficiency and increasing EMI. Careful PCB design is required to ensure stable operation.

3. **Limited Current Rating (10A)**

- While sufficient for many applications, the **10A maximum output current** may be insufficient for high-power designs (e.g., CPU power supplies or high-current motor drivers). For such cases, a **multi-phase solution** or a higher-current controller (e.g., FAN73843E for 20A) would be needed.

4. **No Built-In Power-Good Signal**

- Unlike some competitors (e.g., LM2675), the FAN73842E lacks a **Power-Good (PG) pin**, which can complicate system-level monitoring in applications requiring fault reporting.

5. **Requires Careful Inductor Selection**

- The choice of inductor affects **ripple current, efficiency, and EMI**. A poorly matched inductor can lead to **excessive voltage spikes or saturation issues**, especially at high frequencies.

6. **No Integrated Voltage Feedback Amplifier**

- The error amplifier is external, requiring an **op-amp (e.g., LM358)** for feedback, adding component count and potential noise sensitivity.

7. **Limited Current-Mode Control Flexibility**

- While it supports **current-mode control**, some advanced features (e.g., adaptive voltage positioning) may require additional external components or programming.

8. **Potential for Layout Challenges**

- The **high-side gate driver** requires careful PCB design to avoid **ground loops or noise coupling**, which can affect performance. Poor layout can lead to **false turn-on events** or **EMI issues**.

9. **No Built-In Spread-Spectrum Clocking in All Variants**

- While some versions support SSC, others may require additional circuitry, adding complexity for EMI compliance.

10. **Higher Component Count Than Integrated Solutions**

- Compared to **monolithic buck ICs** (e.g., RT9020), the FAN73842E requires more discrete components (MOSFETs, resistors, capacitors), increasing BOM cost and PCB complexity.

11. **Limited Availability of Direct Replacements**

- Fairchild has been acquired by **ON Semiconductor**, and while the FAN73842E is still available, long-term supply chain risks may exist. Designers should verify availability before committing.

12. **No Built-In Diode Emulation Mode**

- Unlike some controllers (e.g., TPS54300), the FAN73842E does not natively support **diode emulation mode**, which can be useful for low-power or standby modes.

---

### **Conclusion**

The **Fairchild FAN73842E** is a **highly capable synchronous buck controller** suited for applications requiring **high efficiency, wide input range, and robust protection**. Its **adjustable frequency, low quiescent current, and integrated protection features** make it ideal for **industrial, automotive, and battery-powered systems** where reliability and efficiency are critical.

However, its **requirement for external MOSFETs, sensitive gate-drive design, and limited current rating** may pose challenges for **high-power or space-constrained designs**. Additionally, the **additional component count** compared to integrated solutions could increase BOM costs and PCB complexity.

For **mid-power applications (up to 10A) where efficiency and flexibility are prioritized**, the FAN73842E is an **excellent choice**. For **high-power or ultra-low-power designs**, alternatives like **multi-phase controllers (e.g., FAN73843E) or monolithic buck ICs (e.g., RT9020, TPS54300)** may be more suitable.

---

### **Recommendation**

- You need **high efficiency (90% ) in a synchronous buck design**.

- Your application requires **wide input voltage range (4.5V 20V)**.

- You can tolerate **external MOSFETs and careful PCB layout** for gate driving.

- Protection features (OVP, UVLO, thermal shutdown) are critical.

- You operate in **industrial or automotive environments** where reliability is key.

- You need **higher current (>10A)** **FAN73843E (20A) or multi-phase solutions**.

- You prefer **simpler, integrated designs** **TPS54300, RT9020, or LM2675**.

- Your design has **strict EMI requirements** Ensure proper layout and SSC support.

- You need **Power-Good monitoring** Look for controllers with built-in PG pins.

For most **mid-power, efficiency-critical applications**, the **FAN73842E remains a strong and well-supported choice**, provided the designer accounts for its external component requirements. Always verify **MOSFET selection, inductor choice, and PCB layout** to maximize performance.

Details:

Call to use a shipping service other than the ones listed. All Products are guaranteed to be working but may show signs of use if purchasing a used Product. Part Number 10242E. Sells new and surplus Product develops channels to purchase such.

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

part #: 10242e prices

• $118.91-$316.21

specifications generapneumati:

• brand: Fairchild Industrial Prod
• mpn: 10242e
• part type: Hydraulic Pneumatic

shipping generapneumati:

• class: Standard
• cost: $12.90
• type: Fixed
• service: Standard
• transit: 23-36 Days

seller generapneumati:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.5%
• # reviews: 191387

payments generapneumati:

• credit card: Discover
• other
• wallet: Google-pay

offer generapneumati:

• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: February 23, 2026

returns generapneumati:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer
• method: Money back

general generapneumati:

• condition: Used
• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Other Hydraulics Pneumatics

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