1
LT1009 Series
s
Maximum Initial Tolerance: 0.2%
s
Guaranteed Temperature Stability
s
Maximum 0.6
Dynamic Impedance
s
Wide Operating Current Range
s
Directly Interchangeable with LM136 for Improved
Performance
s
No Adjustments Needed for Minimum Temperature
Coefficient
The LT
1009 is a precision trimmed 2.5V shunt regulator
diode featuring a maximum initial tolerance of only
5mV.
The low dynamic impedance and wide operating current
range enhances its versatility. The 0.2% reference toler-
ance is achieved by on-chip trimming which not only
minimizes the initial voltage tolerance but also minimizes
the temperature drift.
Even though no adjustments are needed with the LT1009,
a third terminal allows the reference voltage to be adjusted
5% to calibrate out system errors. In many applications,
the LT1009 can be used as a pin-to-pin replacement of the
LM136 and the external trim network eliminated.
For a lower drift 2.5V reference, see the LT1019 data sheet.
s
Reference for 5V Systems
s
8-Bit A/D and D/A Reference
s
Digital Voltmeters
s
Current Loop Measurement and Control Systems
s
Power Supply Monitor
2.5V Reference
2.5V Reference
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
U
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
N
U
LT1009
OUTPUT
3.6k
5V TO 35V
10k*
TRIM
1009 TA01
*DOES NOT AFFECT
TEMPERATURE COEFFICIENT.
5% TRIM RANGE
TEMPERATURE (
C)
50
REFERENCE VOLTAGE (V)
2.53
2.52
2.51
2.50
2.49
2.48
2.47
25
75
1009 TA02
25
0
50
100
125
TYPICAL
GUARANTEED
MAXIMUM
GUARANTEED
MINIMUM
Output Voltage
2
LT1009 Series
LT1009MH
LT1009CH
T
JMAX
= 150
C,
JA
= 440
C/ W,
JC
= 80
C/ W
ORDER PART NUMBER
Reverse Current .................................................... 20mA
Forward Current ................................................... 10mA
Storage Temperature Range ................. 65
C to 150
C
Lead Temperature (Soldering, 10 sec).................. 300
C
(Note 1)
ABSOLUTE
M
AXI
M
U
M
RATINGS
W
W
W
U
PACKAGE/ORDER I
N
FOR
M
ATIO
N
W
U
U
Operating Temperature Range
LT1009/LT1009C .................................. 0
C to 70
C
LT1009I ........................................... 40
C to 85
C
LT1009M ........................................ 55
C to 125
C
BOTTOM VIEW
ADJ
+
H PACKAGE
3-LEAD TO-46 METAL CAN
TOP VIEW
NC
ADJ
NC
NC
NC
S8 PACKAGE
8-LEAD PLASTIC SO
1
2
3
4
8
7
6
5
T
JMAX
= 150
C,
JA
= 190
C/ W
BOTTOM VIEW
Z PACKAGE
3-LEAD PLASTIC TO-92
1
2
3
+
ADJ
T
JMAX
= 100
C,
JA
= 160
C/ W
ORDER PART NUMBER
ORDER PART NUMBER
S8 PART MARKING
LT1009S8
LT1009IS8
1009
1009I
LT1009CZ
LT1009IZ
AVAILABLE OPTIO S
U
TEMPERATURE
PACKAGE STYLE
ACCURACY
COEFFICIENT
TO-46
SO-8
TO-92
TEMPERATURE
(%)
(ppm/
C)
(H)
(S8)
(Z)
0
C to 70
C
0.20
25
LT1009CH
LT1009CZ
0.40
25
LT1009S8
40
C to 85
C
0.20
25
LT1009IZ
0.40
35
LT1009IS8
55
C to 125
C
0.20
35
LT1009MH
3
LT1009 Series
Reverse Characteristics
Forward Characteristics
Reverse Voltage Change
LT1009M
LT1009I
LT1009/LT1009C
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
V
Z
Reverse Breakdown
T
A
= 25
C, I
R
= 1mA,
H, Z Pkg
2.495 2.500 2.505
2.495 2.500 2.505 2.495 2.500 2.505
V
Voltage
S Pkg
2.49
2.50
2.51
2.49
2.50
2.51
V
V
Z
Reverse Breakdown
400
A
I
R
10mA
2.6
6
2.6
10
2.6
10
mV
I
R
Change with Current
q
3.0
10
3.0
12
3.0
12
mV
r
Z
Reverse Dynamic
I
R
= 1mA
0.2
0.6
0.2
1.0
0.2
1.0
Impedance
q
0.4
1.0
0.4
1.4
0.4
1.4
Temperature Stability
T
MIN
T
A
T
MAX
q
15
15
1.8
4
mV
V
Z
Average Temperature
0
C
T
A
70
C
15
25
15
25
15
25
ppm/
C
Temp
Coefficient (Notes 2, 3) 40
C
T
A
85
C
35
ppm/
C
55
C
T
A
125
C
25
35
ppm/
C
V
Z
Long-Term Stability
T
A
= 25
C
0.1
C
20
20
20
ppm/kHr
Time
I
R
= 1mA
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
U
W
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Guaranteed by Design.
The
q
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
C.
For MIL-STD components, please refer to LTC883C data sheet for test listing and parameters.
Note 3: Average temperature coefficient is defined as the total voltage
change divided by the specified temperature change.
REVERSE VOLTAGE (V)
0.5
REVERSE CURRENT (A)
10
1
10
2
10
3
10
4
10
5
2.2
1009 G01
1.0
1.4
1.8
2.6
T
J
= 125
C
T
J
= 55
C
T
J
= 25
C
FORWARD CURRENT (mA)
0.001
FORWARD VOLTAGE (V)
1.2
1.0
0.8
0.6
0.4
0.2
0
0.01
0.1
1
10
1009 G02
T
J
= 25
C
REVERSE CURRENT (mA)
0
REVERSE VOLTAGE CHANGE (mV)
5
4
3
2
1
0
16
1009 G03
4
8
12
20
5
LT1009 Series
TYPICAL APPLICATIO
N
S
U
LT1009
62
V
+
V
R
3.6V TO 40V
10k
1009 TA03
LM334
LT1009
375
1.2k
V
IN
V
OUT
2k
1009 TA04
LT317A
ADJ
IN
OUT
LT1009
OUT
5k
5V
5k
5V
5V
5V
10k
1%
9.76k
1%
500
1009 TA05
5k
Wide Supply Range, Adjustable Reference
Low Temperature Coefficient Power Regulator
Switchable
1.25V Bipolar Reference
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