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What is GS2576?

This electronic component, produced by the manufacturer "Globaltech", performs the same function as "52kHz 3A Step-Down Voltage Regulator".


GS2576 Datasheet PDF - Globaltech

Part Number GS2576
Description 52kHz 3A Step-Down Voltage Regulator
Manufacturers Globaltech 
Logo Globaltech Logo 


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52kHz 3A Step-Down Voltage Regulator
Product Description
Features
The GS2576 series of regulators are monolithic
integrated circuits that provide all the active functions
for a step-down switching regulator, capable of driving
3A load with excellent line and load regulation. This
device is available in fixed output voltages of 3.3V, 5V
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 GS2576 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 of inductors optimized for use with
the GS2576. 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..
3.3V, 5V and adjustable output versions
Adjustable version output voltage range, 1.23V
to 37V
± 4% max over line and load conditions
Guaranteed 3A output current
40V 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
Applications
Simple high-efficiency step-down regulator
On-card switching regulators
Positive to negative converter
Efficient pre-regulator for linear regulators
Block Diagram
Unregulated
DC Input
+VIN
1
Internal
Regulator
ON / OFF
ON / OFF
5
CIN
FEEDBACK
4
R2
Fixd Gain
Error Amplifier
R1
1k
Comparator
1.23V
Band-Gap
Reference
52 kHz
Oscillator
Reset
Driver
3A
Switch
Thermal
Shutdown
Current
Limit
OUTPUT
2
Regulator
Output
VOUT
L1
GND
3
COUT
L
O
A
D
D1
www.gs-power.com
1
Free Datasheet http://www.datasheet4u.com/

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GS2576 equivalent
Globaltech Semiconductor
Typical Applications
As in any switching regulator, the layout of the printed board (PCB) is very important. Rapidly switching currents
associated with wiring inductance, stray capacitance and parasitic inductance of the printed circuit board traces
can generate voltage transients, which can generate electromagnetic interferences (EMI) and affect the desired
operation. As indicated in the Figure 1, to minimize inductance and ground loops, the length of the leads indicated
by heavy lines should be kept as short as possible.
For best results, single-point grounding (as indicated) or ground plane construction should be used.
On the other hand, the PCB area connected to the Pin 2 (emitter of the internal switch) of the GS2576 should be
kept to a minimum in order to minimize coupling to sensitive circuitry.
Another sensitive part of the circuit is the feedback. It is important to keep the sensitive feedback wiring short. To
assure this, physically locate the programming resistors near to the regulator, when using the Adjustable version of
the GS2576 regulator.
Fixed Output Voltage Versions (Figure 1a)
FEEDBACK
4
+VIN
1
GS2576 -
FIXED OUTPUT
OUTPUT
2
CIN
100μ F
3
GND
5
ON / OFF
L1
100μ H
D1
MBR360
VOUT
COUT
1000μ F
Adjustable Output Voltage Version (Figure 1b)
+VIN
1
GS2576
ADJUSTABLE
FEEDBACK
4
OUTPUT
2
CIN
100μ F
3
GND
5
ON / OFF
D1
MBR360
L1
100μ H
COUT
1000μ F
VOUT
R2
R1
CIN— 100µF, 75V Aluminum Electrolytic
COUT— 1000µF, 25V, Aluminum Electrolytic
D1— Schottky, MBR360
L1— 100 µH
R1-2.0k, 0.1%
R2-6.12k, 0.1%
VOUT=VREF (1+R2 /R1), R2 = R1 (VOUT / VREF - 1), where VREF = 1.23V, R1 between 1k and 5k
www.gs-power.com
5
Free Datasheet http://www.datasheet4u.com/


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for GS2576 electronic component.


Information Total 21 Pages
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Part NumberDescriptionMFRS
GS2576The function is 52kHz 3A Step-Down Voltage Regulator. GlobaltechGlobaltech

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