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LB03 Datasheet PDF - National ->Texas Instruments

Part NameDescriptionManufacturer
LB03 SIMPLE SWITCHER® 3A Step-Down Voltage Regulator National-Semiconductor
National ->Texas Instruments National-Semiconductor
Other PDF  no available.
LB03 Datasheet PDF : LB03 pdf   
LM2576HV image

General Description
The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

■ 3.3V, 5V, 12V, 15V, and adjustable output versions
■ Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and load conditions
■ Guaranteed 3A output current
■ Wide input voltage range, 40V up to 60V for HV version
■ 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
■ P+ Product Enhancement tested

■ Simple high-efficiency step-down (buck) regulator
■ Efficient pre-regulator for linear regulators
■ On-card switching regulators
■ Positive to negative converter (Buck-Boost)

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