Overview
The LM2594HVN-ADJ/NOPB is a versatile and highly efficient step-down (buck) switching regulator produced by Texas Instruments, although it is often listed under National Semiconductor due to the acquisition history. This device is part of the SIMPLE SWITCHER family and is designed to provide a simple and efficient solution for DC-DC conversion. It is capable of handling a wide input voltage range and delivering a stable output voltage with excellent line and load regulation.
Key Specifications
| Parameter | Conditions | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| Input Voltage | - | - | 4.5 V | 60 V (LM2594HV) | V |
| Output Voltage | Adjustable | - | - | - | V |
| Output Current | - | - | - | 0.5 A | A |
| Oscillator Frequency | - | 150 kHz | 110 kHz | 173 kHz | kHz |
| Efficiency | VIN = 12 V, ILOAD = 0.5 A | 80% | - | - | % |
| Saturation Voltage | IOUT = 0.5 A | 0.9 V | - | 1.2 V | V |
| Maximum Junction Temperature | - | - | - | 150 °C | °C |
| Storage Temperature | - | - | -65 °C | 150 °C | °C |
Key Features
- High efficiency with up to 80% efficiency at full load.
- Wide input voltage range: 4.5 V to 60 V for the LM2594HV version.
- Adjustable output voltage.
- Capable of delivering up to 0.5 A DC load current.
- Excellent line and load regulation.
- Thermal shutdown and current-limit protection.
- Simple and efficient design requiring few external components.
- Available in 8-pin PDIP and 8-pin surface-mount SOIC packages.
Applications
- Simple high-efficiency step-down (buck) regulators.
- Efficient preregulators for linear regulators.
- On-card switching regulators.
- Positive-to-negative converters.
- General DC-DC conversion in various electronic systems.
Q & A
- What is the maximum input voltage for the LM2594HVN-ADJ/NOPB? The maximum input voltage for the LM2594HV version is 60 V.
- What is the maximum output current of the LM2594HVN-ADJ/NOPB? The maximum output current is 0.5 A.
- What is the typical oscillator frequency of the LM2594HVN-ADJ/NOPB? The typical oscillator frequency is 150 kHz.
- What is the efficiency of the LM2594HVN-ADJ/NOPB at full load? The efficiency can be up to 80% at full load.
- What are the available output voltage options for the LM2594HVN-ADJ/NOPB? The output voltage is adjustable.
- What kind of protection features does the LM2594HVN-ADJ/NOPB have? It includes thermal shutdown and current-limit protection.
- What are the typical package types for the LM2594HVN-ADJ/NOPB? It is available in 8-pin PDIP and 8-pin surface-mount SOIC packages.
- What is the maximum junction temperature for the LM2594HVN-ADJ/NOPB? The maximum junction temperature is 150 °C.
- What is the storage temperature range for the LM2594HVN-ADJ/NOPB? The storage temperature range is -65 °C to 150 °C.
- How many external components are typically required for the LM2594HVN-ADJ/NOPB? It requires few external components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors.
