Overview
The LED2001PUR, produced by STMicroelectronics, is an 850 kHz fixed switching frequency monolithic step-down DC-DC converter. It is designed to operate as a precise constant current source with an adjustable current capability up to 4 A DC. The device features embedded PWM dimming circuitry for LED brightness control and is optimized for high efficiency with synchronous rectification and a low 100 mV typical RSENSE voltage drop. The LED2001PUR is available in VFQFPN 4x4 mm 8-lead and HSOP8 packages, and it includes comprehensive protection mechanisms such as thermal shutdown, overcurrent, and output short-circuit protection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Input Voltage Range | 3.0 to 18 | V |
| Switching Frequency | 850 kHz | |
| Current Sense Voltage Drop | 100 mV (typ.) | |
| Output Current Accuracy | ± 7% | |
| High-Side Switch On-Resistance | 95 mΩ (typ.) | |
| Low-Side Switch On-Resistance | 69 mΩ (typ.) | |
| Maximum Operating Temperature | 150 °C | |
| Maximum Output Current | 4 A | |
| Package Types | VFQFPN 4x4 mm 8-lead, HSOP8 |
Key Features
- PWM dimming for LED brightness control
- Synchronous rectification for enhanced efficiency
- Peak current mode architecture
- Embedded compensation network
- Ceramic output capacitor compliant
- Internal current limiting and thermal shutdown protection
- High switching frequency to minimize application size
- Comprehensive protection against thermal overheating, overcurrent, and output short-circuit
Applications
- High brightness LED driving
- Signage and display lighting
- Halogen bulb replacement
- General lighting applications
Q & A
- What is the operating input voltage range of the LED2001PUR?
The operating input voltage range is from 3.0 V to 18 V.
- What is the switching frequency of the LED2001PUR?
The switching frequency is fixed at 850 kHz.
- How is the output current accuracy of the LED2001PUR?
The output current accuracy is ± 7%.
- What are the package options for the LED2001PUR?
The device is available in VFQFPN 4x4 mm 8-lead and HSOP8 packages.
- Does the LED2001PUR support PWM dimming?
Yes, it features embedded PWM dimming circuitry for LED brightness control.
- What protection mechanisms are included in the LED2001PUR?
The device includes thermal shutdown, overcurrent protection, and output short-circuit protection.
- What is the maximum output current capability of the LED2001PUR?
The maximum output current capability is up to 4 A DC.
- Is the LED2001PUR compatible with ceramic output capacitors?
Yes, it is ceramic output capacitor compliant.
- What is the typical current sense voltage drop of the LED2001PUR?
The typical current sense voltage drop is 100 mV.
- What are some common applications of the LED2001PUR?
Common applications include high brightness LED driving, signage, halogen bulb replacement, and general lighting.
