ZETEX LM4040_08

LM4040
Precision micropower shunt voltage references
Description
The LM4040 is a family of bandgap circuits
designed to achieve precision micro-power
voltage references of 2.5V, 3.0V and 5.0V. The
devices are available in 0.2% B-grade, 0.5% Cgrade and 1% D-grade initial tolerances.
They are available in small outline SOT23 and
SC75 surface mount package which are ideal
for applications where space saving is
important.
Excellent performance is maintained over the
60µA to 15mA operating current range with a
typical temperature coefficient of only 20ppm/°C.
The device has been designed to be highly
tolerant of capacitive loads so maintaining
excellent stability.
This device offers a pin for pin compatible
alternative to the LM4040 voltage reference. The
LM4040 is also available with AEC-Q100
approval; see LM4040Q datasheet
Features
Applications
•
Small packages: SOT23 & SC75
•
Battery powered equipment
•
No output capacitor required
•
Precision power supplies
•
Output voltage tolerance
•
Portable instrumentation
•
LM4040B
±0.2% at 25°C
•
Portable communications devices
•
LM4040C
±0.5% at 25°C
•
Notebook and palmtop computers
•
LM4040D
±1% at 25°C
•
Data acquisition systems
•
Low output noise
(10Hz to 10kHz) .............. 45␮VRMS
•
Wide operating current range 60␮A to 15mA
•
Extended temperature range -40°C to +125°C
•
Low temperature coefficient 100 ppm/°C (max)
Pinout information
LM4040 H5 (SC70)
LM4040 F (SOT23)
Cathode 3
Anode
1 *
N/C
N/C
Cathode
Anode 2
Top view
Top view
* Pin 1 must be left floating or connected to pin 2
Issue 4 - July 2008
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N/C
* Pin 1 must be left floating or connected to pin 2
1
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LM4040
Ordering information
25oC
Tol
Voltage
(V)
2.5
0.2%
3.0
5.0
2.5
0.5%
3.0
5.0
2.5
1%
3.0
5.0
Order Code
LM4040B25FTA
LM4040B25H5TA
LM4040B30FTA
LM4040B30H5TA
LM4040B50FTA
LM4040B50H5TA
LM4040C25FTA
LM4040C25H5TA
LM4040C30FTA
LM4040C30H5TA
LM4040C50FTA
LM4040C50H5TA
LM4040D25FTA
LM4040D25H5TA
LM4040D30FTA
LM4040D30H5TA
LM4040D50FTA
LM4040D50H5TA
Package
Part
mark
Status
SOT23
SC75
SOT23
SC75
SOT23
SC75
SOT23
SC75
SOT23
SC75
SOT23
SC75
SOT23
SC75
SOT23
SC75
SOT23
SC75
R2B
R2B
R3B
R3B
R5B
R5B
R2C
R2C
R3C
R3C
R5C
R5C
R2D
R2D
R3D
R3D
R5D
R5D
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Reel Size
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
7”,
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
180mm
Tape
Width
Quantity
per reel
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
8mm
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
Absolute maximum ratings
Continuous reverse current (IR) ...................................... 20mA
Continuous forward current (IREF) .................................. 10mA
Operating junction temperature ..................................... -40°C to 150°C
Storage temperature ....................................................... -55°C to 150°C
Operation above the absolute maximum rating may cause device failure. Operation at the
absolute maximum ratings, for extended periods, may reduce device reliability.
Unless otherwise stated voltages specified are relative to the ANODE pin.
Package thermal data
Package
⍜JA
PDIS
Tamb =25°C, TJ = 150°C
SOT23
380°C/W
330mW
SC75
380°C/W
330mW
Recommended operating conditions
Min.
Max.
Units
Reverse current
0.06
15
mA
Operating ambient temperature range
-40
125
°C
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LM4040 - 2.5
Electrical characteristics
Over recommended operating conditions, Tamb = 25°C, unless otherwise stated.
Symbol Parameter
Conditions
Typ.
Tamb
Reverse
breakdown
voltage
VREF
Reverse
breakdown
voltage tolerance
IR = 100␮A
IR = 100␮A
25°C
IRMIN
Average reverse
breakdown
⌬VR/⌬T voltage
temperature
coefficient
±12
±25
-40 to 85°C
±21
±29
±49
-40 to 125°C
±30
±38
±63
60
60
65
-40 to 85°C
65
65
70
-40 to 125°C
68
68
73
100
±100
±150
0.8
0.8
1.0
-40 to 85°C
1.0
1.0
1.2
-40 to 125°C
1.0
1.0
1.2
6.0
6.0
8.0
-40 to 85°C
8.0
8.0
10.0
-40 to 125°C
8.0
8.0
10.0
0.8
0.9
1.1
45
mV
␮A
±20
-40 to 125°C
±15
ppm/°C
±15
25°C
Reverse
breakdown
⌬VR/⌬IR
change with
current
Units
V
±5
IR = 100␮A
IRMIN < IR
< 1mA
LM4040
D limits
25°C
IR = 10mA
IR = 1mA,
LM4040
C limits
2.5
25°C
Minimum
operating current
LM404
B limits
0.3
mV
25°C
1mA < IR <
15 mA
2.5
⍀
ZR
Dynamic output
impedance
IR = 1mA, f = 120Hz
IAC = 0.1IR
0.3
en
Noise voltage
IR = 100␮A
10Hz < f < 10kHz
35
␮VRMS
⌬VR
Long term
stability (non
cumulative)
120
ppm
0.08
%
VHYST
Thermal
hysteresis
Issue 4 - July 2008
© Diodes Incorporated
t = 1000Hrs IR = 100␮A
⌬T = -40°C to +125°C
3
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LM4040 - 3.0
Electrical characteristics
Over recommended operating conditions, Tamb = 25°C, unless otherwise stated
Symbol Parameter
Conditions
Typ.
Tamb
Reverse
breakdown
voltage
VREF
Reverse
breakdown
voltage tolerance
IR = 100␮A
IR = 100␮A
25°C
IRMIN
Average reverse
breakdown
⌬VR/⌬T voltage
temperature
coefficient
±15
±30
-40 to 85°C
±26
±34
±59
-40 to 125°C
TBD
±45
±75
62
62
67
-40 to 85°C
67
67
72
-40 to 125°C
70
70
75
100
±100
±150
0.8
0.8
1.1
-40 to 85°C
1.1
1.1
1.3
-40 to 125°C
1.1
1.1
1.3
6.0
6.0
8.0
-40 to 85°C
9.0
9.0
11.0
-40 to 125°C
9.0
9.0
11.0
0.9
0.9
1.2
47
mV
␮A
±20
-40 to 125°C
±15
ppm/°C
±15
25°C
Reverse
breakdown
⌬VR/⌬IR
change with
current
Units
V
±6
IR = 100␮A
IRMIN < IR
< 1mA
LM4040
D limits
25°C
IR = 10mA
IR = 1mA,
LM4040
C limits
3.0
25°C
Minimum
operating current
LM404
B limits
0.4
mV
25°C
1mA < IR <
15 mA
2.7
⍀
ZR
Dynamic output
impedance
IR = 1mA, f = 120Hz
IAC = 0.1IR
0.4
en
Noise voltage
IR = 100␮A
10Hz < f < 10kHz
35
␮VRMS
⌬VR
Long term
stability (non
cumulative)
120
ppm
0.08
%
VHYST
Thermal
hysteresis
Issue 4 - July 2008
© Diodes Incorporated
t = 1000Hrs IR = 100␮A
⌬T = -40°C to +125°C
4
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LM4040 - 5.0
Electrical characteristics
Over recommended operating conditions, Tamb = 25°C, unless otherwise stated.
Symbol Parameter
Conditions
Typ.
LM404
B limits
5.0
5.0
Tamb
Reverse
breakdown
voltage
VREF
Reverse
breakdown
voltage tolerance
IR = 100␮A
IR = 100␮A
25°C
IRMIN
Average reverse
breakdown
⌬VR/⌬T voltage
temperature
coefficient
±25
±50
-40 to 85°C
±43
±58
±99
-40 to 125°C
±60
±75
±125
74
74
79
-40 to 85°C
80
80
85
-40 to 125°C
83
83
88
100
±100
±150
1.0
1.0
1.3
-40 to 85°C
1.4
1.4
1.8
-40 to 125°C
1.4
1.4
1.8
8.0
8.0
10.0
-40 to 85°C
12.0
12.0
15.0
-40 to 125°C
12.0
12.0
15.0
1.1
1.1
1.5
54
-40 to 125°C
␮A
±20
ppm/°C
±20
25°C
Reverse
breakdown
⌬VR/⌬IR
change with
current
mV
±30
IR = 100␮A
IRMIN < IR
< 1mA
Units
V
±10
IR = 10mA
IR = 1mA,
LM4040
D limits
25°C
25°C
Minimum
operating current
LM4040
C limits
0.5
mV
25°C
1mA < IR <
15 mA
3.5
⍀
ZR
Dynamic output
impedance
IR = 1mA, f = 120Hz
IAC = 0.1IR
0.5
en
Noise voltage
IR = 100␮A
10Hz < f < 10kHz
80
␮VRMS
⌬VR
Long term
stability (non
cumulative)
120
ppm
0.08
%
VHYST
Thermal
hysteresis
Issue 4 - July 2008
© Diodes Incorporated
t = 1000Hrs IR = 100␮A
⌬T = -40°C to +125°C
5
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LM4040-2.5 Typical Characteristics
Issue 4 - July 2008
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LM4040-3.0 Typical characteristics
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LM4040
LM4040-5.0 Typical characteristics
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LM4040 - 2.5, 3.0 and 5.0 Start up characteristics
LM4040-3.0
LM4040-5.0
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Application information
In a conventional shunt regulator application, an external series resistor (RS) is
connected between the supply voltage, VS, and the LM4040
VS
RS
IR +
IL
IL
VR
IR
RS determines the current that flows through the load (IL) and the LM4040 (IR).
Since load current and supply voltage may vary, RS should be small enough to
supply at least the minimum acceptable IR to the LM4040 even when the supply
voltage is at its minimum and the load current is at its maximum value. When
the supply voltage is at its maximum and IL is at its minimum, RS should be
large enough so that the current flowing through the LM4040 is less than 15 mA.
RS is determined by the supply voltage, (VS), the load and operating current, (IL
and IR), and the LM4040’s reverse breakdown voltage, VR.
RS =
VS − VR
IL + IR
Printed circuit board layout considerations
LM4040s in the SOT23 package have the die attached to pin 1, which results in an electrical
contact between pin 2 and pin 3. Therefore, pin 1 of the SOT-23 package must be left floating or
connected to pin 2.
LM4040s in the SC75 package have the die attached to pin 2, which results in an electrical contact
between pin 2 and pin 1. Therefore, pin 2 must be left floating or connected to pin1.
Issue 4 - July 2008
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LM4040
Package outline - SOT23
E
e
e1
b
3 leads
L1
D
E1
A
L
A1
Dim.
c
Millimeters
Inches
Dim.
Millimeters
Min.
Max.
Inches
Min.
Max.
Min.
Max.
A
-
1.12
-
0.044
e1
A1
0.01
0.10
0.0004
0.004
E
2.10
2.64
0.083
0.104
1.90 NOM
Max.
Max.
0.075 NOM
b
0.30
0.50
0.012
0.020
E1
1.20
1.40
0.047
0.055
C
0.085
0.120
0.003
0.008
L
0.25
0.62
0.018
0.024
D
2.80
3.04
0.110
0.120
L1
0.45
0.62
0.018
0.024
-
-
-
-
-
e
0.95 NOM
0.0375 NOM
Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches
Package outline SC-70-5
Dim.
Millimeters
Inches
Min.
Max.
Min.
Max.
Dim.
Millimeters
Min.
Max.
Inches
Max.
Max.
A
0.80
1.10
0.0315
0.0433
E
2.10 BSC
0.0826 BSC
A1
-
0.10
-
0.0039
E1
1.25 BSC
0.0492 BSC
A2
0.80
1.00
0.0315
0.0394
e
0.65 BSC
0.0255 BSC
b
0.15
0.30
0.006
0.0118
e1
1.30 BSC
0.0511 BSC
C
0.08
0.25
0.0031
0.0098
L
0.26
0.46
0.0102
0.0181
ao
0
8
0
8
D
2.00 BSC
Issue 4 - July 2008
© Diodes Incorporated 2008
0.0787 BSC
11
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LM4040
Definitions
Product change
Diodes Incorporated reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or
service. Customers are solely responsible for obtaining the latest relevant information before placing orders.
Applications disclaimer
The circuits in this design/application note are offered as design ideas. It is the responsibility of the user to ensure that the circuit is fit for
the user’s application and meets with the user’s requirements. No representation or warranty is given and no liability whatsoever is
assumed by Diodes Inc. with respect to the accuracy or use of such information, or infringement of patents or other intellectual property
rights arising from such use or otherwise. Diodes Inc. does not assume any legal responsibility or will not be held legally liable (whether
in contract, tort (including negligence), breach of statutory duty, restriction or otherwise) for any damages, loss of profit, business,
contract, opportunity or consequential loss in the use of these circuit applications, under any circumstances.
Life support
Diodes Zetex products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated . As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body
or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labelling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to
cause the failure of the life support device or to affect its safety or effectiveness.
Reproduction
The product specifications contained in this publication are issued to provide outline information only which (unless agreed by the
company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a
representation relating to the products or services concerned.
Terms and Conditions
All products are sold subjects to Diodes Zetex’ terms and conditions of sale, and this disclaimer (save in the event of a conflict between the
two when the terms of the contract shall prevail) according to region, supplied at the time of order acknowledgement.
For the latest information on technology, delivery terms and conditions and prices, please contact your nearest Diodes sales office or visit: www.zetex.com
Quality of product
Diodes Zetex Semiconductors Limited is an ISO 9001 and TS16949 certified semiconductor manufacturer.
To ensure quality of service and products we strongly advise the purchase of parts directly from Diodes Zetex Semiconductors Limited or
one of our regionally authorized distributors. For a complete listing of authorized distributors please visit: www.zetex.com or
www.diodes.com. Diodes Zetex Semiconductors does not warrant or accept any liability whatsoever in respect of any parts purchased
through unauthorized sales channels.
ESD (Electrostatic discharge)
Semiconductor devices are susceptible to damage by ESD. Suitable precautions should be taken when handling and transporting devices.
The possible damage to devices depends on the circumstances of the handling and transporting, and the nature of the device. The extent
of damage can vary from immediate functional or parametric malfunction to degradation of function or performance in use over time.
Devices suspected of being affected should be replaced.
Green compliance
Diodes Zetex Semiconductors is committed to environmental excellence in all aspects of its operations which includes meeting or
exceeding regulatory requirements with respect to the use of hazardous substances. Numerous successful programs have been implemented to reduce the use of hazardous substances and/or emissions.
All Diodes Zetex components are compliant with the RoHS directive, and through this it is supporting its customers in their compliance
with WEEE and ELV directives.
Product status key:
“Preview”
Future device intended for production at some point. Samples may be available
“Active”
Product status recommended for new designs
“Last time buy (LTB)”
Device will be discontinued and last time buy period and delivery is in effect
“Not recommended for new designs” Device is still in production to support existing designs and production
“Obsolete”
Production has been discontinued
Datasheet status key:
“Draft version”
This term denotes a very early datasheet version and contains highly provisional information, which
may change in any manner without notice.
“Provisional version”
This term denotes a pre-release datasheet. It provides a clear indication of anticipated performance.
However, changes to the test conditions and specifications may occur, at any time and without notice.
“Issue”
This term denotes an issued datasheet containing finalized specifications. However, changes to
specifications may occur, at any time and without notice.
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TX75248, USA
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Fax: (1) 631 360 8222
[email protected]
Telephone: (852) 26100 611
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© 2008 Published by Diodes Incorporated
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