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PL2576-XXXF5 Datasheet(PDF) 1 Page - Cystech Electonics Corp.

Part No. PL2576-XXXF5
Description  Simple Switcher 3A Step- Down Voltage Regulator
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Maker  CYSTEKEC [Cystech Electonics Corp.]
Homepage  http://www.cystekec.com
Logo CYSTEKEC - Cystech Electonics Corp.

PL2576-XXXF5 Datasheet(HTML) 1 Page - Cystech Electonics Corp.

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CYStech Electronics Corp.
Spec. No. : C543F5
Issued Date : 2004.02.27
Revised Date :
Page No. : 1/10
PL2576-XXXF5
CYStek Product Specification
Simple Switcher
3A Step- Down Voltage Regulator
PL2576-XXXF5
Features
3.3V, 5V, 12V, 15V, and adjustable output versions.
Adjustable version output voltage range, 1.23V to 37V±4% max over line
and load conditions.
Guaranteed 3A output current.
Wide input voltage range.
Requires only 4 external components
52 kHz fixed frequency oscillator
TTL shutdown capability, low power standby mode.
High efficiency
Uses readily available standard inductors.
Thermal shutdown and current limit protection.
Description
The PL2576-XXXF5 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.
Requiring a minimum number of external components, these regulators are simple to use and include internal
frequency compensation and a fixed-frequency oscillator.
The PL2576-XXXF5 series offers a high-efficiency replacement for popular three-terminal linear regulators. It
substantially reduces the size of the heat sink, and in some cases no heat sink is required.
A standard series if inductors optimized for use with the PL2576 are available from several different
manufacturers. This feature greatly simplifies the design of switch-mode power supplies.
Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output
load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50µA (typical)
standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full
protection under fault conditions.
Applications
Simple high-efficiency step-down (buck) regulator.
Efficient pre-regulator for linear regulators.
On-card switching regulators.
Positive to negative converter (Buck-Boost).
TO-263-5L


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