onsemi LM2574
The LM2574 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step−down switching regulator (buck converter). These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version. These regulators were designed to minimize the number of external components to simplify the power supply design.| Part No. | LM2574 |
|---|---|
| Datasheet | LM2574 Download |
| Manufacturer |  onsemi |
| Description | Step-Down Switching Regulator |
| Buy | Stock & Price |
FEATURES
● 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions● Adjustable Version Output Voltage Range, 1.23 to 37 V ±4% max over Line and Load Conditions
● Guaranteed 0.5 A Output Current
● Wide Input Voltage Range: 4.75 to 40 V
● Requires Only 4 External Components
● 52 kHz Fixed Frequency Internal Oscillator
● TTL Shutdown Capability, Low Power Standby Mode
● High Efficiency
● Uses Readily Available Standard Inductors
● Thermal Shutdown and Current Limit Protection
● These are Pb−Free Devices
APPLICATIONS
● Simple and High−Efficiency Step−Down (Buck) Regulators● Efficient Pre−regulator for Linear Regulators
● On−Card Switching Regulators
● Positive to Negative Converters (Buck−Boost)
● Negative Step−Up Converters
● Power Supply for Battery Chargers DATA SHEET 16 1 SO−16 WB DW SUFFIX CASE 751G 8 1 PDIP−8 N SUFFIX CASE 626 PIN CONNECTIONS *1 *2 FB 3 Sig Gnd 4 ON/OFF 5 Pwr Gnd 6 *7 *8 16 * 15 * 14 Output 13 * 12 Vin 11 * 10 * 9* (Top View) FB 1 Sig Gnd 2 ON/OFF 3 Pwr Gnd 4 8* 7 Output 6* 5 Vin (Top View) * No internal connection, but should be soldered to * PC board for best heat transfer.
