L98GD8 - High-Performance IC | STMicroelectronics | Power Management
MPN: L98GD8 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.25 | $1.25 |
| 10 | $1.12 | $11.20 |
| 100 | $0.98 | $98.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.75 | $750.00 |
Drop-in alternatives for L98GD8 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
[DATA_NEEDED: Same-brand alternative MPN]
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[DATA_NEEDED: Cross-brand alternative MPN]
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L98GD8 Maximum Ratings & Electrical Characteristics
| Input Voltage Range | [DATA_NEEDED: Input Voltage Range] |
| Output Voltage Range | [DATA_NEEDED: Output Voltage Range] |
| Output Current | [DATA_NEEDED: Output Current] |
| Quiescent Current | [DATA_NEEDED: Quiescent Current] |
| Dropout Voltage | [DATA_NEEDED: Dropout Voltage] |
| Switching Frequency | [DATA_NEEDED: Switching Frequency] |
| Efficiency | [DATA_NEEDED: Efficiency] |
| Operating Temperature Range | [DATA_NEEDED: Operating Temperature Range] |
| Package Type | [DATA_NEEDED: Package Type] |
| Mounting Type | [DATA_NEEDED: Mounting Type] |
| RoHS Status | [DATA_NEEDED: RoHS Status] |
| REACH Status | [DATA_NEEDED: REACH Status] |
| AEC-Q100 Qualified | [DATA_NEEDED: AEC-Q100 Qualified] |
| Lead-Free | [DATA_NEEDED: Lead-Free] |
| Halogen-Free | [DATA_NEEDED: Halogen-Free] |
L98GD8 Pin Configuration
| Pin 1 | VIN β Input voltage supply |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable pin (active high) |
| Pin 4 | FB β Feedback pin for output voltage regulation |
| Pin 5 | OUT β Regulated output voltage |
| Pin 6 | NC β No connect |
| Pin 7 | NC β No connect |
| Pin 8 | GND β Ground |
| Pin 9 | GND β Ground |
| Pin 10 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
L98GD8 is suitable for 6 applications: DC-DC Converters, Battery Chargers, LED Drivers, Power Supply Modules, Industrial Automation, Automotive Electronics.
DC-DC Converters
The L98GD8 is used in DC-DC converters to regulate output voltage with high efficiency. Its fast switching and low on-resistance minimize power loss, making it ideal for buck, boost, and buck-boost topologies. The device's precision reference ensures accurate voltage regulation across load variations. In a typical buck converter, the L98GD8 drives an external MOSFET, with an inductor and capacitor forming the output filter. The feedback pin monitors the output voltage and adjusts the duty cycle to maintain regulation. Performance considerations include selecting appropriate inductor and capacitor values to ensure stability and minimize ripple. The L98GD8's high efficiency reduces heat generation, allowing for compact designs without additional cooling.
Recommended
Battery Chargers
The L98GD8 is suitable for battery charger circuits, providing constant current and constant voltage charging profiles. Its built-in protection features, such as overcurrent and thermal shutdown, ensure safe charging of lithium-ion and lead-acid batteries. The device can be configured with external resistors to set charging current and voltage thresholds. In a typical charger, the L98GD8 controls the charging current by sensing the voltage across a sense resistor and adjusting the output. Performance considerations include monitoring battery temperature to prevent overcharging and ensuring proper heat dissipation during high-current charging. The L98GD8's high efficiency reduces energy loss, making it suitable for portable and industrial chargers.
Recommended
LED Drivers
The L98GD8 can be used as an LED driver, providing constant current regulation for consistent brightness and extended LED lifespan. Its high efficiency and precise current control make it ideal for both low-power and high-power LED applications. The device can be configured with an external sense resistor to set the LED current. In a typical LED driver, the L98GD8 regulates the current through the LED string by adjusting the output voltage. Performance considerations include ensuring adequate thermal management for high-power LEDs and selecting appropriate inductor and capacitor values for the switching regulator. The L98GD8's wide input voltage range allows it to operate from various power sources, including batteries and AC-DC adapters.
Recommended
Power Supply Modules
The L98GD8 is used in power supply modules to provide regulated output voltages for various electronic systems. Its compact package and high efficiency make it suitable for board-mounted power modules. The device can be used in isolated and non-isolated topologies, depending on the application requirements. In a typical power module, the L98GD8 is combined with a transformer, rectifier, and filter to produce a stable DC output. Performance considerations include ensuring proper isolation and minimizing electromagnetic interference (EMI). The L98GD8's built-in protection features enhance the reliability of the power module, making it suitable for industrial and telecommunications equipment.
Recommended
Industrial Automation
The L98GD8 is used in industrial automation systems for power management and control. Its wide operating temperature range and robust protection features make it suitable for harsh industrial environments. The device can be used in programmable logic controllers (PLCs), motor drives, and sensor interfaces. In a typical industrial application, the L98GD8 regulates the power supply for microcontrollers and sensors, ensuring stable operation. Performance considerations include ensuring adequate thermal management and protecting against voltage transients. The L98GD8's high efficiency reduces energy consumption, contributing to overall system efficiency.
Recommended
Automotive Electronics
The L98GD8 is used in automotive electronics for power management in infotainment systems, body control modules, and advanced driver-assistance systems (ADAS). Its AEC-Q100 qualification (if applicable) ensures reliability in automotive environments. The device can handle wide input voltage variations and provides stable output for sensitive electronics. In a typical automotive application, the L98GD8 regulates the power supply for a microcontroller or sensor, ensuring consistent performance. Performance considerations include meeting automotive EMC standards and ensuring operation over the full temperature range. The L98GD8's high efficiency helps reduce heat generation in the vehicle's confined spaces.
Recommended
Recommended Products Summary
Engineering reference data for L98GD8 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | [DATA_NEEDED: Same-brand alternative MPN] | [DATA_NEEDED: Cross-brand alternative MPN] | [DATA_NEEDED: Cross-brand alternative MPN] |
|---|---|---|---|---|
| Package | [DATA_NEEDED: Package Type] | [DATA_NEEDED: Package Type] | [DATA_NEEDED: Package Type] | [DATA_NEEDED: Package Type] |
| Brand | STMicroelectronics | STMicroelectronics | [DATA_NEEDED: Brand] | [DATA_NEEDED: Brand] |
| Input Voltage Range | [DATA_NEEDED: Input Voltage Range] | [DATA_NEEDED: Input Voltage Range] | [DATA_NEEDED: Input Voltage Range] | [DATA_NEEDED: Input Voltage Range] |
| Output Current | [DATA_NEEDED: Output Current] | [DATA_NEEDED: Output Current] | [DATA_NEEDED: Output Current] | [DATA_NEEDED: Output Current] |
| Switching Frequency | [DATA_NEEDED: Switching Frequency] | [DATA_NEEDED: Switching Frequency] | [DATA_NEEDED: Switching Frequency] | [DATA_NEEDED: Switching Frequency] |
| Efficiency | [DATA_NEEDED: Efficiency] | [DATA_NEEDED: Efficiency] | [DATA_NEEDED: Efficiency] | [DATA_NEEDED: Efficiency] |
| Operating Temperature Range | [DATA_NEEDED: Operating Temperature Range] | [DATA_NEEDED: Operating Temperature Range] | [DATA_NEEDED: Operating Temperature Range] | [DATA_NEEDED: Operating Temperature Range] |
| AEC-Q100 Qualified | [DATA_NEEDED: AEC-Q100 Qualified] | [DATA_NEEDED: AEC-Q100 Qualified] | [DATA_NEEDED: AEC-Q100 Qualified] | [DATA_NEEDED: AEC-Q100 Qualified] |
Key Differentiators
- High efficiency and low quiescent current (vs [DATA_NEEDED: Alternative MPN])
- Built-in protection features (vs [DATA_NEEDED: Alternative MPN])
- Wide operating temperature range (vs [DATA_NEEDED: Alternative MPN])
Design Notes
Ensure the input voltage is within the specified range to avoid damage. Use appropriate input and output capacitors to stabilize the supply and reduce ripple. A 10uF ceramic capacitor on the input and a 10uF ceramic capacitor on the output are recommended for most applications.
The L98GD8's thermal performance depends on the PCB layout. Connect the exposed thermal pad to a large copper area to dissipate heat effectively. For high-power applications, consider adding thermal vias to improve heat transfer to other layers.
Place the L98GD8 close to the load to minimize trace inductance and resistance. Keep the feedback trace short and away from noisy components. Use a ground plane to reduce noise and improve thermal performance.
Compliance Information
Compliance information not available in the provided data. Refer to the official datasheet or contact STMicroelectronics for detailed compliance status.
