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XRP6272 Datasheet Preview

XRP6272 Datasheet

2A 5V-Adjustable Low Dropout Voltage Regulator

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November 2011
XRP6272
2A 5V-Adjustable Low Dropout Voltage Regulator
Rev. 1.2.0
GENERAL DESCRIPTION
The XRP6272 is a low dropout voltage
regulator capable of a constant output current
up to 2 Amps. A wide 1.8V to 6V input voltage
range allows for single supply operations from
industry standard 1.8V, 2.8V, 3.3V, and 5V
power rails as well as the 5.8V rail.
With better than ±2% output voltage
accuracy, low output noise and high Power
Supply Rejection Ratio (PSRR), the XRP6272 is
perfectly suited for powering RF circuitries.
Optimized for use with small low cost ESR
ceramic output capacitors and featuring a low
30µA quiescent current, this device is also
adequate for use in battery powered portable
equipments. The XRP6272 operates by default
as a 5V fixed output voltage regulator while
usage of an external resistors divider allows
adjustable out voltages as low as 0.7V. An
Enable function, Power Good flag and output
noise reduction pin complete the feature set.
Built-in current limit and thermal protections
insure safe operations under abnormal
operating conditions.
The XRP6272 is offered in RoHS compliant,
“green”/halogen free 5-pin TO-252 and 8-pin
exposed pad SOIC packages.
APPLICATIONS
Networking Equipments
RF Circuitry Power Supplies
Set-top box Equipments
Portable Equipments
FEATURES
Guaranteed 2A Output Current
Low 550mV Dropout at 3.3V/2A
1.8V to 6V Single Input Voltage Range
Fixed 5V and Adjustable Output Voltage
±2% Output Voltage Accuracy
30µA Quiescent Current
Power Good and Enable Functions
70dB Power Supply Rejection Ratio
Low Output Noise
0.01µA Shutdown Current
Current Limit and Thermal Protection
RoHS compliant “Green”/Halogen Free
5-pin TO-252 and 8-pin Exposed pad
SOIC Packages
TYPICAL APPLICATION DIAGRAM
Fig. 1: XRP6272 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001




Exar

XRP6272 Datasheet Preview

XRP6272 Datasheet

2A 5V-Adjustable Low Dropout Voltage Regulator

No Preview Available !

XRP6272
2A 5V-Adjustable Low Dropout Voltage Regulator
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
VIN, EN, BP .......................................................... 7.0V
Storage Temperature .............................. -65°C to 150°C
Power Dissipation ................................ Internally Limited
Lead Temperature (Soldering, 10 sec) ................... 260°C
Junction Temperature .......................................... 150°C
ESD Rating (HBM - Human Body Model) .................... 2kV
ESD Rating (MM - Machine Model) ...........................500V
OPERATING RATINGS
Input Voltage Range VIN................................. 1.8V to 6V
Operating Temperature Range ................... -40°C to 85°C
Thermal Resistance
θJA (5-Pin TO-252).........................................100°C/W
θJC (5-Pin TO-252)............................................ 8°C/W
θJA (8-pin HSOIC)........................................... 60°C/W
θJC (8-pin HSOIC)........................................... 15°C/W
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of TJ = 25°C only. Minimum and Maximum
limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric
norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise indicated, VIN = VOUT + 1V, CIN = 4.7µF,
COUT = 4.7µF or 10µF (Note 1), CBYP = 22nF, TJ = 25°C.
Parameter
Input Voltage
Output Voltage Tolerance
Continuous Output Current
Ground Current
Standby Current
Line Regulation
Load Regulation
Output Current Limit
Current Fold Back
Min.
1.8
-2
2
2.2
Dropout Voltage (Note 2)
Reference Voltage Tolerance
ADJ Pin Current
ADJ Pin Threshold
Enable Turn-On Threshold
Enable Turn-Off Threshold
Shutdown Pin Current
Shutdown Exit Delay Time
Max Output Discharge Resistance
to GND during Shutdown
PGOOD Rise Threshold
PGOOD Hysteresis
PGOOD Delay
PGOOD Sink Capability
Ripple Rejection
Output Noise Voltage
Temperature Coefficient
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
© 2011 Exar Corporation
0.686
0.05
1.6
3
0.5
Typ.
30
30
0.01
3
5
3.0
1.0
960
700
550
480
0.7
10
0.1
0
100
20
90
10
0.2
70
24
50
150
20
Max.
6.0
+2
50
50
0.5
15
15
3.9
900
700
600
0.714
100
0.2
0.4
0.5
100
93
5
0.4
2/13
Units
V
%
A
µA
µA
mV
mV
A
A
mV
V
nA
V
V
V
µA
µs
Conditions
IOUT = 1mA
VIN 2.3V
VEN  1.6V, No Load
VEN  1.6V, IOUT = 300mA
VEN = 0
VIN = VOUT + 1V to 6V, IOUT =1mA
IOUT =1mA to 2A
IOUT = 2A, VOUT =1.2V
IOUT = 2A, VOUT =1.8V
IOUT = 2A, VOUT =3.3V
IOUT = 2A, VOUT =5.0V
VADJ = VREF
Output ON
Output OFF
VEN = 0
%
%
ms
V
dB
µVrms
ppm/C
C
C
IPGOOD = 10mA
f=1KHz, Ripple=0.5Vp-p
CBP = 22nF, f=10Hz ~100KHz
VIN = VOUT + 1V
Rev. 1.2.0


Part Number XRP6272
Description 2A 5V-Adjustable Low Dropout Voltage Regulator
Maker Exar
Total Page 13 Pages
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