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PDF XRP6274 Data sheet ( Hoja de datos )
| Número de pieza | XRP6274 | |
| Descripción | 2A Ultra Low Dropout Voltage Regulator | |
| Fabricantes | Exar | |
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XRP6274
2A Ultra Low Dropout Voltage Regulator
July 2015
GENERAL DESCRIPTION
The XRP6274 is an ultra low dropout voltage
regulator capable of delivering 2A output
currents. It is unique in the industry in being
able to operate from a single supply rail of
1.045V to 2.625V without the need for a noise
generating charge pump.
With its ultra low dropout voltage of 140mV at
full load guaranteed over temperature, the
XRP6274 achieves conversions previously
unavailable.
The output voltage can be set as low as 0.6V
with ±0.5% accuracy making the XRP6274
perfectly suited for powering low voltage
devices such as FPGAs, DSPs, ASICs, and other
SOCs.
Built-in current limit, reverse bias and thermal
protection ensures safe operation under
abnormal operating conditions. An enable
function, soft start and Power Good flag
complete the feature set.
The XRP6274 is offered in RoHS compliant,
“green”/halogen free 10-pin 3x3mm DFN
package.
Rev. 2.0.0
FEATURES
2A Output Current
1.045V to 2.625V Single Input Voltage
Adjustable Output Voltage ≥0.6V
±0.5% Output Voltage Accuracy
Ultra Low Dropout Voltage
140mV Max over temp @ 2A
Power Good Flag
Enable & Soft Start
Current Limit and Thermal Protection
Reverse Bias Protection
RoHS compliant “Green”/Halogen Free
10-pin 3mm x 3mm DFN
APPLICATIONS
Point of Load Conversion
Microprocessors, DSPs, FPGAs Supplies
Networking & Telecom Equipment
Switching Supplies Post Regulation
TYPICAL APPLICATION DIAGRAM
VIN 1.045V-2.625V
R4
CIN
PGOOD
R3
Enable
C1
VIN VOUT
XRP6274/5
EN XDRFPN6-21704 ADJ
PGOOD
GND
VOUT>0.6V
R1
COUT
R2
Fig. 1: XRP6274 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
1 page  
XRP6274
2A Ultra Low Dropout Voltage Regulator
TYPICAL PERFORMANCE CHARACTERISTICS
All data taken at VIN = VOUT+0.5V, TJ = TA = 25°C, unless otherwise specified - Schematic and BOM from Application Information
section of this datasheet.
0.610
0.605
VIN, 1V/Div
0.600
0.595
VOUT, 0.5V/Div
0.590
0.00 0.50 1.00 1.50 2.00 2.50 3.00
IOUT (A)
Fig. 4: VADJ versus IOUT, 1.5VIN, 1VOUT
IOUT, 2A/Div
2ms/Div
Fig. 5: Short-circuit, 1.5VIN, 1VOUT
VOUT, 50mV/Div
AC coupled
67mV undershoot
IOUT,
1A/Div
∆i/∆t=2A/us
40us/Div
Fig. 6: Transient response, 20mA-3A, 1.5VIN, 1VOUT
VOUT, 50mV/Div
AC coupled
40mV undershoot
∆i/∆t=2A/us
IOUT, 1A/Div
20us/Div
Fig. 7: Transient response, 1A-3A, 1.5VIN, 1VOUT
1.0
0.8
0.6
0.4
0.2
0.0
-40 -20 0 20 40 60 80 100 120
Tj (°C)
Fig. 8: Enable threshold versus temperature
© 2015 Exar Corporation
5/11
Rev. 2.0.0
5 Page 
XRP6274
2A Ultra Low Dropout Voltage Regulator
FOR FURTHER ASSISTANCE
Email:
Exar Technical Documentation:
http://www.exar.com/TechDoc/default.aspx?
EXAR CORPORATION
HEADQUARTERS AND SALES OFFICES
48720 Kato Road
Fremont, CA 94538 – USA
Tel.: +1 (510) 668-7000
Fax: +1 (510) 668-7030
www.exar.com
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design,
performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys
no license under any patent or other right, and makes no representation that the circuits are free of patent infringement.
Charts and schedules contained herein are only for illustration purposes and may vary depending upon a user’s specific
application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for
inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or
malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its
safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing,
assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks;
(c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
© 2015 Exar Corporation
11/11
Rev. 2.0.0
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet XRP6274.PDF ] | |
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