LT1461
Micropower Precision
Low Dropout Series
Voltage Reference Family
Fea T Descrip T
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Trimmed to High Accuracy: 0.04% Max The LT 1461 is a family of low dropout micropower band-
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Low Drift: 3ppm/C Max gap references that combine very high accuracy and low
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Low Supply Current: 50A Max drift with low supply current and high output drive. These
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High Output Current: 50mA Min series references use advanced curvature compensation
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Low Dropout Voltage: 300mV Max techniques to obtain low temperature coefficient and
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Excellent Thermal Regulation trimmed precision thin-film resistors to achieve high
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Power Shutdown output accuracy. The LT1461 family draws only 35A
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Thermal Limiting of supply current, making them ideal for low power and
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All Parts Guaranteed Functional from 40C to 125C portable applications, however their high 50mA output
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Voltage Options: 2.5V, 3V, 3.3V, 4.096V and 5V drive makes them suitable for higher power requirements,
such as precision regulators.
a T
In low power applications, a dropout voltage of less than
300mV ensures maximum battery life while maintaining
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A/D and D/A Converters
full reference performance. Line regulation is nearly im-
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Precision Regulators
measurable, while the exceedingly good load and ther-
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Handheld Instruments
mal regulation will not add significantly to system error
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Power Supplies
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 condi-
tions. The LT1461 is available in 2.5V, 3V, 3.3V 4.096V
and 5V options.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Typical a T
Basic Connection LT1461-2.5 Load Regulation, P = 200mW
DISS
(V + 0.3V) V 20V
OUT IN
LT1461 V
OUT
0mA
C C
IN L
1F 2F
V
OUT
1461 TA01
20mA
V LOAD REG
OUT
1mV/DIV
1461 TA02
10ms/DIV
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For more information www.linear.com/LT1461
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a Te Maxi Mu M r a T p c F T
(Note 1)
TOP VIEW
Input Voltage ............................................................20V
Output Short-Circuit Duration .......................... Indefinite
DNC* 1 8 DNC*
Operating Temperature Range
V 2 7 DNC*
IN
(Note 2) ............................................. 40C to 125C
SHDN 3 6 V
OUT
Storage Temperature Range (Note 3) ..... 65C to 150C
GND 4 5 DNC*
Specified Temperature Range
S8 PACKAGE
8-LEAD PLASTIC SO
Commercial ............................................. 0C to 70C
*DNC: DO NOT CONNECT
Industrial .............................................40C to 85C
T = 150C, = 190C/W
JMAX JA
(Note 3)
High ................................................... 40C to 125C
Lead Temperature (Soldering, 10 sec) ...................300C
o r D i n F Ma T
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT1461ACS8-2.5#PBF LT1461ACS8-2.5#TRPBF 461A25 8-LEAD PLASTIC SO 0C to 70C
LT1461ACS8-3#PBF LT1461ACS8-3#TRPBF 1461A3 8-LEAD PLASTIC SO 0C to 70C
LT1461ACS8-3.3#PBF LT1461ACS8-3.3#TRPBF 461A33 8-LEAD PLASTIC SO 0C to 70C
LT1461ACS8-4#PBF LT1461ACS8-4#TRPBF 1461A4 8-LEAD PLASTIC SO 0C to 70C
LT1461ACS8-5#PBF LT1461ACS8-5#TRPBF 1461A5 8-LEAD PLASTIC SO 0C to 70C
LT1461BCS8-2.5#PBF LT1461BCS8-2.5#TRPBF 461B25 8-LEAD PLASTIC SO 0C to 70C
LT1461BCS8-3#PBF LT1461BCS8-3#TRPBF 1461B3 8-LEAD PLASTIC SO 0C to 70C
LT1461BCS8-3.3#PBF LT1461BCS8-3.3#TRPBF 461B33 8-LEAD PLASTIC SO 0C to 70C
LT1461BCS8-4#PBF LT1461BCS8-4#TRPBF 1461B4 8-LEAD PLASTIC SO 0C to 70C
LT1461BCS8-5#PBF LT1461BCS8-5#TRPBF 1461B5 8-LEAD PLASTIC SO 0C to 70C
LT1461CCS8-2.5#PBF LT1461CCS8-2.5#TRPBF 461C25 8-LEAD PLASTIC SO 0C to 70C
LT1461CCS8-3#PBF LT1461CCS8-3#TRPBF 1461C3 8-LEAD PLASTIC SO 0C to 70C
LT1461CCS8-3.3#PBF LT1461CCS8-3.3#TRPBF 461C33 8-LEAD PLASTIC SO 0C to 70C
LT1461CCS8-4#PBF LT1461CCS8-4#TRPBF 1461C4 8-LEAD PLASTIC SO 0C to 70C
LT1461CCS8-5#PBF LT1461CCS8-5#TRPBF 1461C5 8-LEAD PLASTIC SO 0C to 70C
LT1461AIS8-2.5#PBF LT1461AIS8-2.5#TRPBF 61AI25 8-LEAD PLASTIC SO 40C to 85C
LT1461AIS8-3#PBF LT1461AIS8-3#TRPBF 461AI3 8-LEAD PLASTIC SO 40C to 85C
LT1461AIS8-3.3#PBF LT1461AIS8-3.3#TRPBF 61AI33 8-LEAD PLASTIC SO 40C to 85C
LT1461AIS8-4#PBF LT1461AIS8-4#TRPBF 461AI4 8-LEAD PLASTIC SO 40C to 85C
LT1461AIS8-5#PBF LT1461AIS8-5#TRPBF 461AI5 8-LEAD PLASTIC SO 40C to 85C
LT1461BIS8-2.5#PBF LT1461BIS8-2.5#TRPBF 61BI25 8-LEAD PLASTIC SO 40C to 85C
LT1461BIS8-3#PBF LT1461BIS8-3#TRPBF 461BI3 8-LEAD PLASTIC SO 40C to 85C
LT1461BIS8-3.3#PBF LT1461BIS8-3.3#TRPBF 61BI33 8-LEAD PLASTIC SO 40C to 85C
LT1461BIS8-4#PBF LT1461BIS8-4#TRPBF 461BI4 8-LEAD PLASTIC SO 40C to 85C
LT1461BIS8-5#PBF LT1461BIS8-5#TRPBF 461BI5 8-LEAD PLASTIC SO 40C to 85C
LT1461CIS8-2.5#PBF LT1461CIS8-2.5#TRPBF 61CI25 8-LEAD PLASTIC SO 40C to 85C
LT1461CIS8-3#PBF LT1461CIS8-3#TRPBF 461CI3 8-LEAD PLASTIC SO 40C to 85C
LT1461CIS8-3.3#PBF LT1461CIS8-3.3#TRPBF 61CI33 8-LEAD PLASTIC SO 40C to 85C
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For more information www.linear.com/LT1461
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