Regulator Adjustable. SPX2840 Datasheet

SPX2840 Adjustable. Datasheet pdf. Equivalent


Sipex SPX2840
www.DataSheet4U.com
FEATURES
Adjustable Output Down To 1.25V Or Fixed 3.3V
Output Current Of 4A
Low Dropout Voltage
Extremely Tight Load And Line Regulation
Current & Thermal Limiting
Standard 3-Terminal Low Cost TO-220
SPX2840
4A Low Dropout Voltage Regulator
Adjustable & Fixed 3.3V
APPLICATIONS
Powering Intel Pentium µP from +5V Supplies
Power PCSupplies
SMPS Post-Regulator
High Efficiency “Green” Computer Systems
High Efficiency Linear Power Supplies
Portable Instrumentation
Constant Current Regulators
Adjustable Power Supplies
Battery Charger
PRODUCT DESCRIPTION
The SPX2840 is a low power 4A Adjustable Voltage Regulator that is very easy to use. It requires only 2 external resistors to set the
output voltage. This device is an excellent choice for use in Powering IntelMicroprocessor to convert from +5V to 3.3V supplies
and as a post regulator for switching supplies applications. The SPX2840 features low dropout of a maximum 1.3 volts.
The SPX2840 offers over-current limit and full protection against reversed input polarity, reversed load insertion, over temperature
operation, and positive and negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. The IQ of this device
flows in to the load, which increases the efficiency.
The SPX2840 is offered in a 3-pin TO-220 package compatible with other 3 terminal regulators. For a 3A low dropout regulator refer
to the SPX2830 data sheet.
ORDERING INFORMATION
TO-220-3 (U)
SPX2840
123
ADJ/GND VOUT VIN
Front View
Rev. 10/23/00


SPX2840 Datasheet
Recommendation SPX2840 Datasheet
Part SPX2840
Description Low Dropout Voltage Regulator Adjustable
Feature SPX2840; www.DataSheet4U.com SPX2840 4A Low Dropout Voltage Regulator Adjustable & Fixed 3.3V FEATURES • Adj.
Manufacture Sipex
Datasheet
Download SPX2840 Datasheet




Sipex SPX2840
ABSOLUTE MAXIMUM RATINGS
Power Dissipation..........................................Internally Limited
Lead Temp. (Soldering, 10 Seconds) .............................. 300°C
Storage Temperature Range ............................ -65° to +150°C
Operating Junction Temperature Range
SPX2840 Control Section..........................0C° to +125°C
SPX2840 Power Transistor........................0C° to +150°C
SPX2840
Input Supply Voltage .................................................... +10V
Input to Output Voltage Differential ............................. +10V
ELECTRICAL CHARACTERISTICS.(NOTE 1) at IOUT = 10mA, TA=25°C, unless otherwise specified.
Parameter
Conditions
SPX2840
Min Typ
Reference Voltage
1.238
1.250
Min. Load Current
Line Regulation
Load Regulation
Dropout Voltage
10 mA IOUT IFULLLOAD
1.5V(VIN - VOUT 7V ( Over Temperature)
(VIN-VOUT) + 25V
1.5V VIN - VOUT 7V
ILOAD = 10mA
15V VIN - VOUT 7V
10 mA IOUT IFULLLOAD
(VIN - VOUT)=3V
IOUT=IFULLLOAD , VREF=1%
1.225
1.250
5
0.015
0.035
0.05
0.1
0.2
1.1
Current Limit
Long Term Stability
VIN - VOUT=5V
VIN - VOUT=25V
TA=125°C, 1000 Hrs.
5.5 6.5
0.3 0.6
0.3
Adjust Pin Current
TA=25°C
55
Adjust Pin Current Change
0.2
Thermal Regulation
30 ms pulse
0.003
Temperature Stability
0.5
Ripple Rejection Ratio
Output Noise, RMS
VIN - VOUT=3V
60 75
IOUT =3A, COUT = 25µF, CADJ = 25µF, f= 120Hz
10Hz to 10kHz
0.003
Max
1.262
1.270
10
0.2
0.2
0.5
0.3
0.4
1.3
1
120
5
0.015
The Bold specifications apply to the full operating temperature range.
Note 1: Changes in output voltage due to heating effects are covered under the specification for thermal regulation.
Note 2: A 10µF output capacitor is required on SPX2840.
Units
V
V
mA
%
%
%
%
%
V
A
A
%
µA
µA
µA
%/W
%
dB
% VO
Rev. 10/23/00



Sipex SPX2840
TYPICAL CHARACTERISTICS
SPX2840
Rev. 10/23/00







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