Overview
The Texas Instruments LM2588S-ADJ/NOPB is a monolithic integrated circuit designed for various switching regulator applications, including flyback, step-up (boost), and forward converters. This SIMPLE SWITCHER® regulator is part of the LM2588 series and is known for its ease of use, flexibility, and minimal requirement for external components. It is particularly useful for designs that need a wide input voltage range, from 4V to 40V, and can deliver up to 5A of output current. The device features an adjustable switching frequency and external shutdown capability, making it versatile for a variety of power supply needs.
Key Specifications
| Attribute | Value |
|---|---|
| Regulator Function | Step Up |
| Maximum Output Current | 5A |
| Number of Outputs | 1 |
| Maximum Input Voltage | 40 V |
| Line Regulation | 100 mV |
| Load Regulation | 100 mV |
| Mounting Type | Surface Mount |
| Package Type | TO-263 |
| Pin Count | 7 |
| Output Type | Adjustable |
| Maximum Switching Frequency | 200 kHz |
| Switching Regulator | Yes |
| Efficiency | 90% |
| Dimensions | 10.16 x 8.64 x 4.57mm |
| Height | 4.57mm |
| Maximum Output Voltage | 12.6 V |
| Minimum Input Voltage | 4 V |
| Maximum Operating Temperature | +125 °C |
| Minimum Operating Temperature | -40 °C |
Key Features
- Requires few external components, making it cost-effective and simple to use.
- Family of standard inductors and transformers available for use with this regulator.
- NPN output switches capable of handling up to 5A and standing off 65V.
- Wide input voltage range from 4V to 40V.
- Adjustable switching frequency from 100 kHz to 200 kHz.
- External shutdown capability, allowing the device to be turned off externally.
- Frequency synchronization to operate multiple devices at the same switching frequency.
- Current-mode operation for improved transient response, line regulation, and current limiting.
- Internal soft-start function to reduce in-rush current during start-up.
- Output transistor protected by current limit, undervoltage lockout, and thermal shutdown.
- System output voltage tolerance of ±4% max over line and load conditions.
Applications
- Flyback regulators: Suitable for applications requiring isolated output voltages.
- Step-up (boost) regulators: Ideal for boosting input voltage to a higher output voltage.
- Forward converters: Used in applications where a non-isolated output voltage is required.
- Multiple-output regulators: Can be used in systems requiring multiple output voltages from a single input.
- Simple boost regulators: Effective in scenarios where a straightforward boost conversion is needed).
Q & A
- What is the maximum output current of the LM2588S-ADJ/NOPB?
The maximum output current is 5A.
- What is the input voltage range for the LM2588S-ADJ/NOPB?
The input voltage range is from 4V to 40V.
- What is the maximum switching frequency of the LM2588S-ADJ/NOPB?
The maximum switching frequency is 200 kHz.
- Does the LM2588S-ADJ/NOPB have external shutdown capability?
Yes, it has external shutdown capability.
- What is the efficiency of the LM2588S-ADJ/NOPB?
The efficiency is up to 90%.
- What are the operating temperature ranges for the LM2588S-ADJ/NOPB?
The operating temperature range is from -40°C to +125°C.
- What type of package does the LM2588S-ADJ/NOPB come in?
The device comes in a TO-263 package with 7 pins.
- Does the LM2588S-ADJ/NOPB have current-mode operation?
Yes, it operates in current-mode for improved transient response and line regulation.
- Is there an internal soft-start function in the LM2588S-ADJ/NOPB?
Yes, it includes an internal soft-start function to reduce in-rush current during start-up.
- What is the output voltage tolerance of the LM2588S-ADJ/NOPB?
The system output voltage tolerance is ±4% max over line and load conditions.
