TI LM4041B12IDBZR

LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
•
FEATURES
•
•
•
•
•
•
Applications
– Data-Acquisition Systems
– Power Supplies and Power-Supply Monitors
– Instrumentation and Test Equipment
– Process Control
– Precision Audio
– Automotive Electronics
– Energy Management/Metering
– Battery-Powered Equipment
1.225-V Fixed and Adjustable Outputs
(1.225 V to 10 V)
Tight Output Tolerances and Low
Temperature Coefficient
– Max 0.1%, 100 ppm/°C – A Grade
– Max 0.2%, 100 ppm/°C – B Grade
– Max 0.5%, 100 ppm/°C – C Grade
– Max 1.0%, 150 ppm/°C – D Grade
Low Output Noise . . . 20 µVRMS (Typ)
Wide Operating Current Range . . .
45 µA (Typ) to 12 mA
Stable With All Capacitive Loads; No Output
Capacitor Required
Available in
– Industrial Temperature: –40°C to 85°C
– Extended Temperature: –40°C to 125°C
1.2 V . . . DBZ (SOT-23) PACKAGE
(TOP VIEW)
CATHODE
1.2 V . . . DCK (SC-70) PACKAGE
(TOP VIEW)
1
ANODE
3 *
CATHODE 3
* Pin 3 must be connected to
ANODE or left open.
Adjustable . . . DBZ (SOT-23) PACKAGE
(TOP VIEW)
FB
CATHODE
1
NC
4
NC
Adjustable . . . DCK (SC-70) PACKAGE
(TOP VIEW)
NC 1
ANODE
2
ANODE
ANODE
CATHODE
NC
NC − No internal connection
* Pin 2 must be connected to
ANODE or left open.
1
3
5
* 2
ANODE 2
1.2 V . . . LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
5 FB
NC − No internal connection
Adjustable . . . LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
ANODE
2
CATHODE 3
CATHODE
4 NC
FB
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
The LM4041 series of shunt voltage references are versatile, easy-to-use references suitable for a wide array of
applications. They require no external capacitors for operation and are stable with all capacitive loads.
Additionally, the reference offers low dynamic impedance, low noise, and a low temperature coefficient to ensure
a stable output voltage over a wide range of operating currents and temperatures. The LM4041 uses fuse and
Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from
0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in
choosing the best cost-to-performance ratio for their applications. The LM4041 is available in a fixed (1.225 V
nominal) or an adjustable version (which requires an external resistor divider to set the output to a value between
1.225 V and 10 V).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
Packaged in space-saving SC-70 and SOT-23-3 and requiring a minimum current of 45 µA (typ), the LM4041
also is ideal for portable applications. The TO-92 package also is available for through-hole packaging needs.
The LM4041xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The
LM4041xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.
ORDERING INFORMATION
TA
DEVICE GRADE
A grade:
0.1% initial
accuracy
and
100 ppm/°C
temperature
coefficient
PACKAGE (1)
VZ
SC-70 (DCK)
1.2 V
SOT-23-3 (DBZ)
TO-92/TO-226 (LP)
SC-70 (DCK)
B grade:
0.2% initial
accuracy
and
100 ppm/°C
temperature
coefficient
ADJ
SOT-23-3 (DBZ)
TO-92/TO-226 (LP)
SC-70 (DCK)
1.2 V
SOT-23-3 (DBZ)
TO-92/TO-226 (LP)
SC-70 (DCK)
–40°C to 85°C
C grade:
0.5% initial
accuracy
and
100 ppm/°C
temperature
coefficient
ADJ
SOT-23-3 (DBZ)
TO-92/TO-226 (LP)
SC-70 (DCK)
1.2 V
SOT-23-3 (DBZ)
TO-92/TO-226 (LP)
SC-70 (DCK)
D grade:
1.0% initial
accuracy
and
150 ppm/°C
temperature
coefficient
ADJ
SOT-23-3 (DBZ)
TO-92/TO-226 (LP)
SC-70 (DCK)
1.2 V
SOT-23-3 (DBZ)
TO-92/TO-226 (LP)
(1)
(2)
2
ORDERABLE
PART NUMBER
Reel of 3000
LM4041A12IDCKR
Reel of 3000
LM4041A12IDBZR
Reel of 250
LM4041A12IDBZT
Bulk of 1000
LM4041A12ILP
Reel of 2000
LM4041A12ILPR
Reel of 3000
LM4041BIDCKR
Reel of 250
LM4041BIDCKT
Reel of 3000
LM4041BIDBZR
Reel of 250
LM4041BIDBZT
Bulk of 1000
LM4041BILP
Reel of 2000
LM4041BILPR
Reel of 3000
LM4041B12IDCKR
Reel of 3000
LM4041B12IDBZR
Reel of 250
LM4041B12IDBZT
Bulk of 1000
LM4041B12ILP
Reel of 2000
LM4041B12ILPR
Reel of 3000
LM4041CIDCKR
Reel of 250
LM4041CIDCKT
Reel of 3000
LM4041CIDBZR
Reel of 250
LM4041CIDBZT
Bulk of 1000
LM4041CILP
Reel of 2000
LM4041CILPR
Reel of 3000
LM4041C12IDCKR
Reel of 3000
LM4041C12IDBZR
Reel of 250
LM4041C12IDBZT
Bulk of 1000
LM4041C12ILP
Reel of 2000
LM4041C12ILPR
Reel of 3000
LM4041DIDCKR
Reel of 250
LM4041DIDCKT
Reel of 3000
LM4041DIDBZR
Reel of 250
LM4041DIDBZT
Bulk of 1000
LM4041DILP
Reel of 2000
LM4041DILPR
Reel of 3000
LM4041D12IDCKR
Reel of 3000
LM4041D12IDBZR
Reel of 250
LM4041D12IDBZT
Bulk of 1000
LM4041D12ILP
Reel of 2000
LM4041D12ILPR
TOP-SIDE
MARKING (2)
MK_
4MK_
PREVIEW
MG_
4MG_
PREVIEW
ML_
4ML_
PREVIEW
MH_
4MH_
PREVIEW
MM_
4MM_
PREVIEW
MJ_
4MJ_
PREVIEW
MN_
4MN_
PREVIEW
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
ORDERING INFORMATION
TA
–40°C to 125°C
(1)
(2)
DEVICE GRADE
C grade:
0.5% initial
accuracy
and
100 ppm/°C
temperature
coefficient
D grade:
1.0% initial
accuracy
and
150 ppm/°C
temperature
coefficient
VZ
ADJ
PACKAGE (1)
SOT-23-3 (DBZ)
1.2 V
SOT-23-3 (DBZ)
ADJ
SOT-23-3 (DBZ)
1.2 V
SOT-23-3 (DBZ)
ORDERABLE
PART NUMBER
Reel of 3000
LM4041CQDBZR
Reel of 250
LM4041CQDBZT
Reel of 3000
LM4041C12QDBZR
Reel of 250
LM4041C12QDBZT
Reel of 3000
LM4041DQDBZR
Reel of 250
LM4041DQDBZT
Reel of 3000
LM4041D12QDBZR
Reel of 250
LM4041D12QDBZT
TOP-SIDE
MARKING (2)
4MP_
4MS_
4MR_
4MT_
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
3
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
FUNCTIONAL BLOCK DIAGRAM
CATHODE
+
_
VREF(1)
(2)
FB(1)
(2)
ANODE
(1) LM4041x (ADJ) only
(2) LM4041x12 only
Absolute Maximum Ratings (1)
over free-air temperature range (unless otherwise noted)
MIN
VZ
Continuous cathode voltage
IZ
Continuous cathode current
θJA
Package thermal impedance (2) (3)
TJ
Operating virtual junction temperature
Tstg
Storage temperature range
(1)
(2)
(3)
–10
MAX
V
25
mA
DBZ package
206
DCK package
252
LP package
156
–65
UNIT
15
°C/W
150
°C
150
°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
The package thermal impedance is calculated in accordance with JESD 51-7.
Recommended Operating Conditions
IZ
Cathode current
VZ
Reverse breakdown voltage (adjustable version)
TA
(1)
4
Free-air temperature
See parametric tables
MIN
MAX
(1)
12
mA
10
V
LM4041 (I temperature)
–40
85
LM4041 (Q temperature)
–40
125
UNIT
°C
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
LM4041x12I Electrical Characteristics
full-range TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
VZ
TEST CONDITIONS
Reverse breakdown
voltage
IZ = 100 µA
Reverse breakdown
voltage tolerance
IZ = 100 µA
IZ,min
Minimum cathode
current
αVZ
Average temperature
coefficient of reverse
breakdown voltage
25°C
TYP
IZ = 1 mA
IZ,min < IZ < 1 mA
1 mA < IZ < 12 mA
LM4041B12I
MAX
MIN
1.225
TYP
MAX
1.225
25°C
–1.2
1.2
–2.4
2.4
–9.2
9.2
–10.4
10.4
45
75
45
80
±20
±20
25°C
±15
±15
±100
Full range
25°C
±15
25°C
0.7
Full range
25°C
±100
Full range
mV
µA
ppm/°C
±15
1.5
0.7
2
4
75
80
25°C
UNIT
V
Full range
25°C
IZ = 100 µA
∆VZ/∆IZ
LM4041A12I
MIN
Full range
IZ = 10 mA
Reverse breakdown
voltage change with
cathode current change
TA
6
1.5
2
4
8
6
mV
8
ZZ
Reverse dynamic
impedance
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ
25°C
0.5
eN
Wideband noise
IZ = 100 µA,
10 Hz ≤ f ≤ 10 kHz
25°C
20
20
µVRMS
Long-term stability of
reverse breakdown
voltage
t = 1000 h,
TA = 25°C ± 0.1°C,
IZ = 100 µA
25°C
120
120
ppm
1.5
0.5
1.5
Ω
5
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
LM4041x12I Electrical Characteristics
full-range TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
VZ
TEST CONDITIONS
Reverse breakdown
voltage
IZ = 100 µA
Reverse breakdown
voltage tolerance
IZ = 100 µA
IZ,min
Minimum cathode
current
αVZ
Average temperature
coefficient of reverse
breakdown voltage
25°C
TYP
IZ = 1 mA
IZ,min < IZ < 1 mA
1 mA < IZ < 12 mA
LM4041D12I
MAX
MIN
1.225
TYP
MAX
1.225
25°C
–6
6
–12
12
–14
14
–24
24
45
75
45
80
±20
±20
25°C
±15
±15
±100
Full range
25°C
±15
25°C
0.7
Full range
25°C
±150
Full range
mV
µA
ppm/°C
±15
1.5
0.7
2
2.5
75
80
25°C
UNIT
V
Full range
25°C
IZ = 100 µA
∆VZ/∆IZ
LM4041C12I
MIN
Full range
IZ = 10 mA
Reverse breakdown
voltage change with
cathode current change
TA
6
2
2.5
2.5
8
8
mV
10
ZZ
Reverse dynamic
impedance
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ
25°C
0.5
eN
Wideband noise
IZ = 100 µA,
10 Hz ≤ f ≤ 10 kHz
25°C
20
20
µVRMS
Long-term stability of
reverse breakdown
voltage
t = 1000 h,
TA = 25°C ± 0.1°C,
IZ = 100 µA
25°C
120
120
ppm
6
1.5
0.5
2
Ω
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
LM4041x12Q Electrical Characteristics
full-range TA = –40°C to 125°C (unless otherwise noted)
PARAMETER
VZ
TEST CONDITIONS
Reverse breakdown
voltage
IZ = 100 µA
Reverse breakdown
voltage tolerance
IZ = 100 µA
IZ,min
Minimum cathode
current
αVZ
Average temperature
coefficient of reverse
breakdown voltage
25°C
25°C
Full range
25°C
IZ = 1 mA
IZ = 100 µA
∆VZ/∆IZ
LM4041C12Q
MIN
TYP
IZ,min < IZ < 1 mA
1 mA < IZ < 12 mA
LM4041D12Q
MAX
MIN
1.225
TYP
1.225
6
–12
12
18.4
–31
31
45
75
45
80
±20
±20
±15
±15
±100
Full range
25°C
±15
25°C
0.7
Full range
Full range
25°C
±150
mV
µA
ppm/°C
±15
1.5
0.7
2
2.5
75
80
25°C
UNIT
V
–6
25°C
25°C
MAX
–18.4
Full range
IZ = 10 mA
Reverse breakdown
voltage change with
cathode current change
TA
6
2.5
2.5
8
0.5
2
8
mV
10
0.5
ZZ
Reverse dynamic
impedance
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ
eN
Wideband noise
IZ = 100 µA,
10 Hz ≤ f ≤ 10 kHz
25°C
20
20
µVRMS
Long-term stability of
reverse breakdown
voltage
t = 1000 h,
TA = 25°C ± 0.1°C,
IZ = 100 µA
25°C
120
120
ppm
Full range
1.5
2
Ω
7
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
LM4041xI (Adjustable Version) Electrical Characteristics
full-range TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
VREF
TEST CONDITIONS
Reference voltage
IZ = 100 µA, VZ = 5 V
Reference voltage
tolerance (1)
IZ = 100 µA, VZ = 5 V
IZ,min
Minimum cathode
current
∆VREF/∆IZ
Reference voltage
change with cathode
current change
∆VREF/∆VKA
Reference voltage
change with output
voltage change
IFB
Feedback current
αVREF
Average temperature
coefficient of
reference voltage (1)
eN
(1)
8
LM4041BI
MIN
25°C
TYP
1 mA < IZ < 12 mA
MAX
1.233
–2.5
2.5
–6.2
6.2
10.5
–14
14
45
25°C
0.7
1.5
2
4
–1.55
–2
0.7
2
4
–1.55
–2
100
–2.5
60
120
25°C
±20
25°C
±15
100
120
mV
mV/V
nA
±20
±15
±100
Full range
µA
6
–2.5
60
mV
1.5
2
6
Full range
75
80
2
Full range
25°C
45
80
Full range
25°C
75
UNIT
V
–10.5
Full range
IZ = 1 mA, VZ = 5 V
TYP
25°C
25°C
IZ = 1 mA
MIN
1.233
Full range
IZ,min < IZ < 1 mA
LM4041CI
MAX
Full range
25°C
IZ = 10 mA, VZ = 5 V
ZZ
TA
±100
ppm/°C
IZ = 100 µA, VZ = 5 V
25°C
±15
±15
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ, VZ = VREF
25°C
0.3
0.3
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ, VZ = 10 V
25°C
2
2
Wideband noise
IZ = 100 µA, VZ = VREF,
10 Hz ≤ f ≤ 10 kHz
25°C
20
20
µVRMS
Long-term stability of
reverse breakdown
voltage
t = 1000 h,
TA = 25°C ± 0.1°C,
IZ = 100 µA
25°C
120
120
ppm
Reverse dynamic
impedance
Ω
Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics.
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
LM4041xI (Adjustable Version) Electrical Characteristics
full-range TA = –40°C to 85°C (unless otherwise noted)
PARAMETER
VREF
IZ,min
∆VREF/∆IZ
TEST CONDITIONS
Reference voltage
IZ = 100 µA, VZ = 5 V
Reference voltage tolerance (1)
IZ = 100 µA, VZ = 5 V
Reference voltage change
with output voltage change
IFB
Feedback current
IZ,min < IZ < 1 mA
IZ = 1 mA
ZZ
eN
(1)
Average temperature coefficient
of reference voltage (1)
25°C
–12
12
–24
24
45
25°C
25°C
0.7
mV
µA
2
2.5
2
6
–1.55
–2
Full range
25°C
75
80
Full range
UNIT
V
Full range
mV
8
Full range
25°C
IZ = 1 mA, VZ = 5 V
MAX
1.233
–3
60
Full range
IZ = 10 mA, VZ = 5 V
αVREF
TYP
Full range
1 mA < IZ < 12 mA
∆VREF/∆VKA
LM4041DI
MIN
25°C
25°C
Minimum cathode current
Reference voltage change
with cathode current change
TA
150
200
25°C
±20
25°C
±15
±150
Full range
mV/V
nA
ppm/°C
IZ = 100 µA, VZ = 5 V
25°C
±15
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ, VZ = VREF
25°C
0.3
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ, VZ = 10 V
25°C
2
Wideband noise
IZ = 100 µA, VZ = VREF,
10 Hz ≤ f ≤ 10 kHz
25°C
20
µVRMS
Long-term stability
of reverse breakdown voltage
t = 1000 h,
TA = 25°C ± 0.1°C,
IZ = 100 µA
25°C
120
ppm
Reverse dynamic impedance
Ω
Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics.
9
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
LM4041xQ (Adjustable Version) Electrical Characteristics
full-range TA = –40°C to 125°C (unless otherwise noted)
PARAMETER
VREF
TEST CONDITIONS
Reference voltage
IZ = 100 µA, VZ = 5 V
Reference voltage
tolerance (1)
IZ = 100 µA, VZ = 5 V
IZ,min
Minimum cathode
current
∆VREF/∆IZ
Reference voltage
change with cathode
current change
∆VREF/∆VKA
Reference voltage
change with output
voltage change
IFB
Feedback current
αVREF
Average temperature
coefficient of
reference voltage (1)
eN
(1)
10
LM4041CQ
MIN
25°C
TYP
1 mA < IZ < 12 mA
MAX
1.233
6.2
–12
12
–18
18
–30
30
45
25°C
0.7
1.5
2
4
–1.55
–2
0.7
2
6
–1.55
–2.5
100
–4
60
120
25°C
±20
25°C
±15
150
200
mV
mV/V
nA
±20
±15
±100
Full range
µA
10
–3
60
mV
2
2.5
8
Full range
75
80
2
Full range
25°C
45
80
Full range
25°C
75
UNIT
V
–6.2
Full range
IZ = 1 mA, VZ = 5 V
TYP
25°C
25°C
IZ = 1 mA
MIN
1.233
Full range
IZ,min < IZ < 1 mA
LM4041DQ
MAX
Full range
25°C
IZ = 10 mA, VZ = 5 V
ZZ
TA
±150
ppm/°C
IZ = 100 µA, VZ = 5 V
25°C
±15
±15
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ, VZ = VREF
25°C
0.3
0.3
IZ = 1 mA, f = 120 Hz,
IAC = 0.1 IZ, VZ = 10 V
25°C
2
2
Wideband noise
IZ = 100 µA, VZ = VREF,
10 Hz ≤ f ≤ 10 kHz
25°C
20
20
µVRMS
Long-term stability of
reverse breakdown
voltage
t = 1000 h,
TA = 25°C ± 0.1°C,
IZ = 100 µA
25°C
120
120
ppm
Reverse dynamic
impedance
Ω
Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics.
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
TYPICAL CHARACTERISTICS
0.5
1000
IZ = 150 A
VREF = 1.2 V
0.4
0.3
800
Noise Voltage (nV/Hz)
Reference Voltage (V)
−9.9 ppm/C
0.2
2.7 ppm/C
0.1
0
−0.1
21 ppm/C
−0.2
−0.3
600
400
200
−0.4
−0.5
−40
−20
0
20
40
60
80
0
100
1
10
3
1.235
125C
1.234
0
1
−5
VZ
−10
0.5
VIN (V)
1.5
Reference Voltage (V)
VIN
VZ (V)
LM4041 (Adj)
IZ = 1 mA
10
5
10k
<br/>
1.2345
2
1k
Figure 2. Noise Voltage vs Frequency
15
2.5
100
Frequency (Hz)
Temperature (C)
Figure 1. Temperature Drift for Different Average
Temperature Coefficients
85C
1.2335
−40C
25C
1.233
1.2325
1.232
1.2315
−15
0
−0.5
−2
2
6
10
14
18
22
Time (s)
Figure 3. Start-Up Characteristics
<br/>
−20
26
1.231
1.2305
0
2
4
6
8
10
Reverse (Output) Voltage (V)
Figure 4. Reference Voltage vs Reverse (Output) Voltage
(for Different Temperatures)
11
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
TYPICAL CHARACTERISTICS
1.235
100
LM4041 (Adj)
IZ = 1 mA
1.2345
90
125C
85C
80
VREF
Feedback Current (nA)
Reference Voltage (V)
1.234
LM4041 (Adj)
IZ = 1 mA
1.2335
1.233
5V
1.2325
1.232
1.2315
25C
70
−40C
60
50
40
30
10 V
20
1.231
10
1.2305
−40
−20
0
20
40
60
80
0
100
Temperature (C)
2
4
6
8
10
Reverse (Output) Voltage (V)
Figure 6. Feedback Current vs Reverse (Output) Voltage
(for Different Temperatures)
Figure 5. Reference Voltage vs Temperature
(for Different Reverse Voltages)
1000
1000
LM4041 (Adj)
IZ = 1 mA
IZ = 0.1 IZ
Tj = 25C
100
CL = 0 F
10
10 V
Impedance (Ω)
Capacitor
Line
100
Impedance ()
0
CL = 0 F
Capacitor
Line
LM4041 (Adj)
IZ = 150 A
IZ = 0.1 IZ
Tj = 25°C
10 V
10
5V
5V
CL = 1 F
CL = 1 F
1.23 V
1
1
2.5 V
1.23 V
2.5 V
0.1
0.1
100
1k
10k
100k
Frequency (Hz)
Figure 7. Output Impedance vs Frequency
12
1M
100
1k
10k
100k
Frequency (Hz)
Figure 8. Output Impedance vs Frequency
1M
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
TYPICAL CHARACTERISTICS
FB Steps (V)
(see Figure 12)
0
100
2
4
6
100
8
90
LM4041 (Adj)
VZ = 1.23 V (nominal)
90
80
Reverse Current (A)
Reverse Current (A)
80
70
60
50
40
30
70
60
50
40
30
20
20
LM4041 (Adj)
IZ = 1 mA
10
10
0
0
1
2
3
4
5
6
7
8
9
10
Reverse (Output) Voltage (V)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Reverse (Output) Voltage (V)
Figure 10. Reverse Characteristics and Minumum
Operating Current
Figure 9. Reverse Characteristics
<br/>
1.6
0
LM4041 (Adj)
VAdj = VREF + 5 mV
1.4
Output Saturation (V)
1.2
−40C
1
25C
85C
0.8
125C
0.6
0.4
0.2
0
0
1
2
3
4
5
6
7
8
9
10 11
12
Output Current (mA)
Figure 11. Output Saturation vs Output Current
13
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
APPLICATION INFORMATION
RS 30 k
VIN
LM4041-1.2
VZ
1-Hz rate
Figure 12. Startup Characteristics Test Circuit
IR
(+)
LM4041 (Adj)
(−)
2 V/step
V
Figure 13. Reverse Characteristics Test Circuit
Output Capacitor
The LM4041 does not require an output capacitor across CATHODE and ANODE for stability. However, if an
output bypass capacitor is desired, the LM4041 is designed to be stable with all capacitive loads.
SOT-23 and SC-70 Pin Connections
There is a parasitic Schottky diode connected between pins 2 and 3 of the SOT-23 packaged device. Thus, pin 3
of the SOT-23 package must be left floating or connected to pin 2. Similarly, pin 2 of the SC-70 package also
must be left floating or connected to pin 1.
14
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
www.ti.com
SLCS146D – FEBRUARY 2005 – REVISED DECEMBER 2005
APPLICATION INFORMATION
Adjustable Version
The adjustable version allows VZ to be set by a user-defined resistor divider. The output voltage, VZ, is set
according to the equation shown in Figure 14.
VS
RS
VREF
LM4041
VZ = VREF 1 R2
R1
+
R1
−
(Adjustable)
R2
Figure 14. Adjustable Shunt Regulator
Cathode and Load Currents
In a typical shunt regulator configuration (see Figure 15), an external resistor, RS, is connected between the
supply and the cathode of the LM4041. RS must be set properly, as it sets the total current available to supply
the load (IL) and bias the LM4041 (IZ). In all cases, IZ must stay within a specified range for proper operation of
the reference. Taking into consideration one extreme in the variation of the load and supply voltage (maximum IL
and minimum VS), RS must be small enough to supply the minimum IZ required for operation of the regulator, as
given by data sheet parameters. At the other extreme, maximum VS and minimum IL, RS must be large enough to
limit IZ to less than its maximum recommended rating of 12 mA.
RS is calculated as shown in Equation 1.
VS VZ
RS (I L I Z)
(1)
VS
RS
IZ + IL
IL
VZ
IZ
LM4041
Figure 15. Shunt Regulator
15
PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
LM4041A12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
TBD
Lead/Ball Finish
LM4041A12ILP
PREVIEW
TO-92
LP
3
1000
LM4041B12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12ILP
PREVIEW
TO-92
LP
3
1000
LM4041BIDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKT
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKTE4
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
TBD
Call TI
Call TI
TBD
Call TI
MSL Peak Temp (3)
Call TI
Call TI
Call TI
LM4041BILPR
PREVIEW
TO-92
LP
3
2000
LM4041C12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDBZT
ACTIVE
SOT-23
DBZ
3
250
CU NIPDAU
Level-1-260C-UNLIM
Addendum-Page 1
Green (RoHS &
PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
LM4041C12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
Lead/Ball Finish
MSL Peak Temp (3)
no Sb/Br)
LM4041C12ILP
PREVIEW
TO-92
LP
3
1000
LM4041C12QDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
TBD
CU NIPDAU
Call TI
Call TI
Level-1-260C-UNLIM
LM4041C12QDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12QDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12QDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKT
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKTE4
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041CILPR
PREVIEW
TO-92
LP
3
2000
TBD
Call TI
Call TI
LM4041CQDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CQDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CQDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CQDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
CU NIPDAU
Level-1-260C-UNLIM
Addendum-Page 2
PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
LM4041D12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKT
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKTE4
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
Lead/Ball Finish
MSL Peak Temp (3)
no Sb/Br)
LM4041DILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041DILPR
PREVIEW
TO-92
LP
3
2000
TBD
Call TI
Call TI
LM4041DQDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DQDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DQDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DQDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
Addendum-Page 3
PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 4
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
0.205 (5,21)
0.175 (4,44)
0.165 (4,19)
0.125 (3,17)
DIA
0.210 (5,34)
0.170 (4,32)
Seating
Plane
0.157 (4,00) MAX
0.050 (1,27)
C
0.500 (12,70) MIN
0.104 (2,65)
FORMED LEAD OPTION
0.022 (0,56)
0.016 (0,41)
0.016 (0,41)
0.014 (0,35)
STRAIGHT LEAD OPTION
D
0.135 (3,43) MIN
0.105 (2,67)
0.095 (2,41)
0.055 (1,40)
0.045 (1,14)
1
2
3
0.105 (2,67)
0.080 (2,03)
0.105 (2,67)
0.080 (2,03)
4040001-2 /C 10/01
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Lead dimensions are not controlled within this area
D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92)
E. Shipping Method:
Straight lead option available in bulk pack only.
Formed lead option available in tape & reel or ammo pack.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
0.539 (13,70)
0.460 (11,70)
1.260 (32,00)
0.905 (23,00)
0.650 (16,50)
0.610 (15,50)
0.020 (0,50) MIN
0.098 (2,50)
0.384 (9,75)
0.335 (8,50)
0.748 (19,00)
0.217 (5,50)
0.433 (11,00)
0.335 (8,50)
0.748 (19,00)
0.689 (17,50)
0.114 (2,90)
0.094 (2,40)
0.114 (2,90)
0.094 (2,40)
0.169 (4,30)
0.146 (3,70)
DIA
0.266 (6,75)
0.234 (5,95)
0.512 (13,00)
0.488 (12,40)
TAPE & REEL
4040001-3 /C 10/01
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Tape and Reel information for the Format Lead Option package.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
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