DC-DC Converter

High-frequency power conversion circuits, called DC-DC converters, use inductors, transformers, and capacitors to reduce switching noise and create a controlled DC voltage. The feedback system maintains a constant voltage even when the input voltage and output current change.
Sourcewell is an authorized distributor of DC-DC Converters in India. All DC-DC Converter products are available in bulk quantities at the best prices here. We also provide sample support and immediate delivery of the products.

LM1938

The LM1938 is a step-up DC/DC converter designed to drive white LEDs at this current. This device can drive two, three, or 27 LEDs from a 5V source. Additional features of it include output voltage limitation when the LED is off.
Attributes

• Inherently Matched LED Current
• High Efficiency: 84% Typical
• Drives Up to 27 LED LEDs from a 5V Supply
• 36V Rugged Bipolar Switch
• Fast 1.2 MHz Switching Frequency

LM1501BG

The LM1501BG series of regulators are monolithic integrated circuits that provide all the active functions for a step-down switching regulator, capable of driving a 5A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and they include internal frequency compensation and a fixed-frequency oscillator. The LM1501BG series operates at a switching frequency of 300kHz, thus allowing smaller-sized filter components than what would be needed with lower-frequency switching regulators.
Attributes

• Guaranteed 5A output load current
• Input voltage range up to 40V
• 300KHz fixed frequency internal oscillator
• Thermal shutdown and current limit protection

LM1501AG

LM1501AG series regulators are monolithic integrated circuits that provide all the active functions of a step-down switching regulator capable of driving 5A loads with excellent line and load control. These devices are available in 3.3V, 5V, 12V fixed output voltage, and adjustable output versions. These regulators require minimal external components, are easy to use, and include an internal voltage and frequency oscillator. The LM1501AG series operates at a switching frequency of 150kHz, allowing the use of smaller filters compared to low-frequency switching regulators.
Attributes

• Input voltage range up to 40V
• 150KHz fixed frequency internal oscillator
• Excellent line and load regulation
• Thermal shutdown and current limit protection

LM1501B

The LM1501B series regulators are integral integrated circuits that provide all the active functions for a step-down switching regulator capable of driving 5A loads with excellent line and load control. These devices are available in 3.3V, 5V, 12V fixed output voltage, and adjustable output versions. These regulators require minimal external components and are easy to use. The LM1501B series operates at a frequency of 300 kHz.
Attributes

• Adjustable version output voltage range, 1.23V to 37V 3% max
  over line and load conditions
• Input voltage range up to 40V
• 300 kHz 15% fixed frequency internal oscillator
• Low power standby mode, Iq typically 80µA

LM1501A

The LM1501A series regulators are integral integrated circuits that provide all the active functions of a step-down switching regulator capable of driving 5A loads with excellent line and load control. These devices are available in 3.3V, 5V, 12V fixed output voltage, and adjustable output versions. These regulators require minimal external components and are easy to use. The LM1501A series operates at a frequency of 150 kHz.
Attributes

• Adjustable version output voltage range, 1.23V to 37V 3% max over line and load conditions
• 150kHz 15% fixed frequency internal oscillator
• Excellent line and Load regulation specifications
• Low power standby mode, IQ typically 80µA

LM4576

The LM4576 series regulators are solid integrated circuits that provide all the active functions for a step-down (stepping) switching regulator capable of driving a 3-A load with excellent line and load control. These devices are available in 3.3V, 5V, 12V fixed output voltage and adjustable output versions. The is available in a standard 5-pin TO-220 package and a 5-pin TO-263 surface mount package.
Attributes

• Adjustable version output voltage range, 1.23V to 37V
• ±4% max over line and load condition
• Available in TO-220, TO-263 and SOP-8PP
• Guaranteed 3A output load current
• Input voltage range up to 40V
• 300kHz fixed frequency internal oscillator
• Low power standby mode, ISTB typically 30uA

LM2596HV

The LM2596HV series regulators are integral integrated circuits that provide all the active functions for a step-down (stepping) switching regulator capable of driving a 3-A load with excellent line and load control. These devices are available in 3.3V, 5V, 12V fixed output voltage, and adjustable output versions. It is available in a standard 5-pin TO-220 package and a 5-pin TO-263 surface mount package. The typical standby current is 30 µA, including external shutdown. The output switch includes loop-by-cycle current limiting, thermal shutdown, and output short-circuits protection for complete protection under fault conditions.
Attributes

• Adjustable version output voltage range, 1.23V to 57V
• Available in TO-220, TO-263, and SOP-8PP
• Guaranteed 3A output load current
• Input voltage range up to 60V
• Excellent line and load regulation specifications
• 150kHz fixed frequency internal oscillator
• Low power standby mode, ISTB typically 30uA

LM2596

LM2596 series regulators are ideal monolithic integrated circuits for easy and simple design of step-down switching regulators (supply converters). All circuits in this family can drive 3.0A loads with excellent line and load control. This device provides 3.3V, 5V fixed output.0V, 12V, and adjustable output versions. These regulators are designed to minimize external components to facilitate power generation. Several different inductor manufacturers offer good inductor family models for use with the LM2596. Because the LM2596 converter is a switching-type power supply, it is more efficient than popular three-terminal linear regulators, especially at high input voltages.
Attributes

• Guaranteed 3.0A Output Current
• Wide Input Voltage Range
• 150kHz Fixed Frequency Internal Oscillator
• TTL Shutdown Capability, Low Power Standby Mode
• Uses Readily Available Standard Inductors

LM2576HV

LM2576HV series regulators are integral integrated circuits providing all active functions for a step-down (stepping) switching regulator capable of driving 3A loads with excellent line and load regulation. These devices are available in 3.3V, 5.0V, 12V, 15V fixed output voltage and adjustable output versions.
Attributes

• Adjustable Version Output Voltage Range, 1.23V to 52V ±4%
• Wide Input Voltage Range 60V
• 52 kHz Fixed Frequency Oscillator
• TTL Shutdown Capability, Low Power Standby Mode
• Available in TO-220, TO-263, and SOP-8PP Packages
• Moisture Sensitivity Level 3 for SMD Packages

LM2575HV

LM2575HV series regulators are ideal monolithic integrated circuits for easy and simple design of step-down switching regulators (power converters). All circuits in this family can drive 1A loads with excellent line and load control. These devices are available in 3.3V, 5.0V, 12V, and 15V fixed output voltage and adjustable output versions. These regulators are designed to reduce the number of external devices to facilitate electricity generation. Several different inductor manufacturers offer good inductor family models for use with the LM2575HV.
Attributes

• 52kHz Fixed Frequency Internal Oscillator
• TTL Shutdown Capability, Low Power Standby Mode
• Uses Readily Available Standard Inductors
• Thermal Shutdown and Current Limit Protection
• Moisture Sensitivity Level 3

LM2575

LM2575 series regulators are ideal monolithic integrated circuits for easy and simple design of step-down switching regulators (supply converters). All circuits in this family can drive 1A loads with excellent line and load control. These devices are available in 3.3V, 5.0V, 12V, and 15V fixed output voltage and adjustable output versions. These regulators are designed to reduce the number of external devices to facilitate electricity generation. Many different inductor manufacturers offer model inductor families that are optimized for use with the LM2575.
Attributes

• ±4% Maximum Over Line and Load Conditions
• Guaranteed 1A Output Current
• Wide Input Voltage Range
• Requires Only 4 External Components