Overview
The LM3488MMX/NOPB, produced by Texas Instruments, is a versatile low-side N-FET high-performance controller designed for switching regulators. This device is suitable for use in various topologies such as boost, flyback, or SEPIC converters. It operates over a wide supply voltage range of 2.97 V to 40 V, making it highly adaptable for different power supply designs. The LM3488 features current mode control, which provides superior bandwidth and transient response, along with cycle-by-cycle current limiting. It also includes internal soft-start, thermal shutdown, and overvoltage protection, enhancing its reliability and efficiency in power management applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | VSSOP (DGK) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage Range | 2.97 to 40 | V |
| Switching Frequency Range | 100 kHz to 1 MHz | - |
| Internal Reference Accuracy | ±1.5% (Overtemperature) | - |
| Shutdown Current | 5 µA | - |
| Peak Current Capability | 1 A | - |
| Thermal Shutdown | 165 °C | - |
Key Features
- Automotive Grade Product, AEC-Q100 Qualified
- 8-Lead VSSOP Package
- Internal Push-Pull Driver With 1-A Peak Current Capability
- Current Limit and Thermal Shutdown
- Frequency Compensation Optimized With a Capacitor and a Resistor
- Internal Soft-Start
- Current Mode Operation
- Undervoltage Lockout With Hysteresis
- Adjustable and Synchronizable Clock Frequency
- Power-saving Shutdown Mode
Applications
- Automotive Start-Stop Applications
- Automotive ADAS and Driver Information Systems
- One Cell/Two Cell Li-ion Battery Powered Portable Bluetooth Audio Systems
- Notebooks, PDAs, Digital Cameras, and other Portable Applications
- Offline Power Supplies
- Set-Top Boxes
- Boost for Audio Amplifiers
Q & A
- What is the operating temperature range of the LM3488MMX/NOPB?
The operating temperature range is -40°C to 125°C.
- What is the supply voltage range for the LM3488MMX/NOPB?
The supply voltage range is 2.97 V to 40 V.
- How can the switching frequency of the LM3488MMX/NOPB be adjusted?
The switching frequency can be adjusted between 100 kHz and 1 MHz using a single external resistor or by synchronizing it to an external clock.
- What is the peak current capability of the internal push-pull driver?
The peak current capability is 1 A.
- Does the LM3488MMX/NOPB have thermal shutdown protection?
- What is the shutdown current of the LM3488MMX/NOPB?
The shutdown current is 5 µA.
- Is the LM3488MMX/NOPB suitable for automotive applications?
- What package type does the LM3488MMX/NOPB come in?
- Does the LM3488MMX/NOPB have internal soft-start and overvoltage protection?
- Can the LM3488MMX/NOPB be used in boost, flyback, or SEPIC converters?
