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LT1461-2.5 Datasheet

Micropower Precision Low Dropout Series Voltage Reference

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FEATURES
s Trimmed to High Accuracy: 0.04% Max
s Low Drift: 3ppm/°C Max
s Low Supply Current: 50µA Max
s Temperature Coefficient Guaranteed to 125°C
s High Output Current: 50mA Min
s Low Dropout Voltage: 300mV Max
s Excellent Thermal Regulation
s Power Shutdown
s Thermal Limiting
s Operating Temperature Range: – 40°C to 125°C
s Available in SO-8 Package
U
APPLICATIO S
s A/D and D/A Converters
s Precision Regulators
s Handheld Instruments
s Power Supplies
TYPICAL APPLICATIO
Basic Connection
VIN 2.8V
CIN
1µF
LT1461-2.5
2.5V
CL
2µF
1461 TA01
LT1461-2.5
Micropower Precision
Low Dropout Series
Voltage Reference
DESCRIPTIO
The LT®1461 is a low dropout micropower bandgap refer-
ence that combines very high accuracy and low drift with low
supply current and high output drive. This series reference
uses advanced curvature compensation techniques to obtain
low temperature coefficient and trimmed precision thin-film
resistors to achieve high output accuracy. The LT1461 draws
only 35µA of supply current, making it ideal for low power and
portable applications, however its high 50mA output drive
makes it suitable for higher power requirements, such as
precision regulators.
In low power applications, a dropout voltage of less than
300mV ensures maximum battery life while maintaining full
reference performance. Line regulation is nearly immeasur-
able, while the exceedingly good load and thermal regulation
will not add significantly to system error budgets. The
shutdown feature can be used to switch full load currents and
can be used for system power down. Thermal shutdown
protects the part from overload conditions.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Load Regulation, PDISS = 200mW
0mA
IOUT
20mA
VOUT LOAD REG
1mV/DIV
10ms/DIV
1461 TA02
1


Linear Technology Electronic Components Datasheet

LT1461-2.5 Datasheet

Micropower Precision Low Dropout Series Voltage Reference

No Preview Available !

LT1461-2.5
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage ........................................................... 20V
Output Short-Circuit Duration ......................... Indefinite
Operating Temperature Range
(Note 2) ........................................... – 40°C to 125°C
Specified Temperature Range
Commercial ............................................ 0°C to 70°C
Industrial ........................................... – 40°C to 85°C
High ................................................. – 40°C to 125°C
Storage Temperature Range (Note 3) ... – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
DNC* 1
VIN 2
SHDN 3
GND 4
8 DNC*
7 DNC*
6 VOUT
5 DNC*
S8 PACKAGE
8-LEAD PLASTIC SO
*DNC: DO NOT CONNECT
TJMAX = 130°C, θJA = 190°C/ W
Consult factory for Military grade parts.
ORDER PART
NUMBER
LT1461ACS8-2.5
LT1461BCS8-2.5
LT1461CCS8-2.5
LT1461AIS8-2.5
LT1461BIS8-2.5
LT1461CIS8-2.5
LT1461DHS8-2.5
S8 PART MARKING
461A25 61BI25
461B25 61CI25
461C25 61DH25
61AI25
AVAILABLE OPTIO S
GRADE
LT1461ACS8-2.5/LT1461AIS8-2.5
LT1461BCS8-2.5/LT1461BIS8-2.5
LT1461CCS8-2.5/LT1461CIS8-2.5
LT1461DHS8-2.5, – 40°C to 125°C
INITIAL
ACCURACY (%)
0.04%
0.06%
0.08%
0.15%
MAXIMUM TEMPERATURE
COEFFICIENT (ppm/°C)
3
7
12
20
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the specified temperature
range, otherwise specifications are at TA = 25°C. VIN – VOUT = 0.5V, Pin 3 = 2.4V, CL = 2µF, unless otherwise specified.
PARAMETER
Output Voltage (Note 4)
Output Voltage Temperature Coefficient (Note 5)
CONDITIONS
LT1461ACS8-2.5/LT1461AIS8-2.5
LT1461BCS8-2.5/LT1461BIS8-2.5
LT1461CCS8-2.5/LT1461CIS8-2.5
LT1461DHS8-2.5
LT1461ACS8-2.5/LT1461AIS8-2.5
LT1461BCS8-2.5/LT1461BIS8-2.5
LT1461CCS8-2.5/LT1461CIS8-2.5
LT1461DHS8-2.5
MIN TYP MAX
2.499 2.500 2.501
– 0.04
0.04
2.4985 2.500 2.5015
– 0.06
0.06
2.498 2.500 2.502
– 0.08
0.08
2.49625 2.500 2.50375
– 0.15
0.15
q 13
q 37
q 5 12
q 7 20
UNITS
V
%
V
%
V
%
V
%
ppm/°C
ppm/°C
ppm/°C
ppm/°C
2


Part Number LT1461-2.5
Description Micropower Precision Low Dropout Series Voltage Reference
Maker Linear Technology
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