Diodes LM4041 User Manual
LM4041
A
Description
The LM4041 is a bandgap circuit designed to achieve a
precision micro-power voltage reference of 1.225 V. The
device is available in the small outline SOT23 and SC70-5
surface mount packages which are ideal for applications
where space saving is important.
Both packages are available to 0.5% C grade and 1%
D grade for precision applications. Excellent performance is
maintained over the 60µA to 12mA 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
LM4041 voltage reference in both adjustable and 1.225V
output variants.
Features
• Small packages: SOT23, SC70-5
• No output capacitor required
• Output voltage tolerance
• LM4041C: ±0.5% at 25°C
• LM4041D: ±1% at 25°C
• Low output noise: 20µVrms
(10Hz to 10kHz)
• Wide operating current range: 60µA to 12mA
• Extended temperature range: -40°C to +125°C
• Low temperature coefficient : 100ppm/°C (max)
• All parts AEC-Q100 Grade1 qualified
Applications
• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Portable communications devices
• Notebook and palmtop computers
• Data acquisition systems
LM4041
Document number: DS32020 Rev. 8 - 2
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES
Pin Assignments
LM4041_F (SOT23)
CATHODE 1
ANODE
Pin 3 must left floating or connected to pin 2.
LM4041_ADJF….(SOT23)
REF 1
CATHODE
LM4041_H5 (SC70-5)
ANODE 1
N/C 2
CATHODE
Pin 2 must be left floating or connected to pin 1
LM4041_ADJH5 (SC70-5)
N/C 1
NODE 2
CATHODE 3
1 of 7
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2
2
3
3 N/C
3 ANODE
5 N/C
4 N/C
5 REF
4 N/C
September 2011
© Diodes Incorporated
LM4041
Absolute Maximum Ratings
Description Rating Unit
Continuous Reverse Current (IR) 20 mA
Continuous Forward Current (IF) 10 mA
Maximum Output Voltage (LM4041_ADJ) 15 V
Junction Temperature -40 to 155 °C
Storage Temperature -55 to 150 °C
ESD Ratings
Human Body Model 4000 V
Machine Model 200 V
These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure. Operation at the absolute
maximum rating, for extended periods may reduce device reliability.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD prec autions should be taken
when handling and transporting these devices.
Package Thermal Data
Package θJA
SOT23 380°C/W 330mW
SC70-5 420°C/W 300mW
Recommended Operating Conditions
Parameter Min Max Units
Reverse Current 0.06 12 mA
Output Voltage Range 1.24 10 V
Operating Ambient Temperature Range -40 125
LM4041
Document number: DS32020 Rev. 8 - 2
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES
P
TA = 25°C, TJ = 150°C
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DIS
2 of 7
°C
September 2011
© Diodes Incorporated
LM4041
A
Ω
A
Ω
Electrical Characteristics
LM4041-1.2
Electrical characteristics over recommended operating conditions, TA = 25°C, unless otherwise stated, I
LM4041C and LM4041D have initial tolerances of 0.5% and 1% respectively.
Symbol Parameter
Reverse Breakdown Voltage
V
Reverse Breakdown Voltage
REF
Tolerance
I
Minimum Operating Current
RMIN
ΔVR/ΔΤ
ΔVR/ΔΙR
LM4041-Adj
Electrical characteristics over recommended operating conditions, TA = 25°C, I
grade D designates initial reference voltage tolerance of ±1% and is measured at an output/cathode voltage of 5V.
Symbol Parameter
V
I
RMIN
ΔVR/ΔΤ
ΔVR/ΔVK
I
REF
ΔVR/ΔΙR
ZR Dynamic Output Impedance
en Noise Voltage IR = 100µA 10Hz < f < 10kHz 20 µV
ΔVR
LM4041
Document number: DS32020 Rev. 8 - 2
Average Reverse Breakdown
Voltage Temperature Coefficient
Reverse Breakdown Change With
Current
ZR Dynamic Output Impedance IR = 1mA, f = 120Hz, IAC = 0.1IR 0.5 1.5 2.0
en Noise Voltage IR = 100µA 10Hz < f < 10kHz 20 µV
Long Term Stability (Non
ΔVR
cumulative)
Reverse Breakdown Voltage
REF
Reverse Breakdown Voltage
Tolerance
Minimum Operating Current
Average Reverse Breakdown
Voltage Temperature
Coefficient
Reference voltage change with
cathode voltage change
Reference input current
Reverse Breakdown Change
With Current
Long Term Stability
(Non cumulative)
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES
<IR<12mA, V
RMIN
Conditions
T
Typ
LM4041C
Limits
LM4041D
Limits
25°C 1.225 V
IR = 100 µA
25°C ±6 ±12
-40 to 85°C ±14 ±24
-40 to 125°C ±18.4 ±31
25°C
60 65
45
-40 to 125°C 68 73
I
= 10 mA
R
IR = 1 mA, ±15 ±100 ±150
-40 to 125°C
±20
IR = 100 µA ±15
< IR < 1mA
I
RMIN
25°C
-40 to 85°C 2.0 2.5
0.7
1.5 2.0
-40 to 125°C 2.0 2.5
1mA < IR < 12 mA
25°C
-40 to 85°C 8.0 10.0
2.5
6.0 8.0
-40 to 125°C 8.0 10.0
t = 1000Hrs I
= 100µA 120
R
Conditions
<IR <12 mA, V
RMIN
T
REF
<V
Typ
<10V unless otherwise stated. The
OUT
LM4041D
Limits
25°C 1.233 V
IR = 100 µA, VKA = 5V
25°C ±12
-40 to 85°C ±24
-40 to 125°C ±30
25°C
65
45
-40 to 125°C 73
= 10 mA
I
R
IR = 1 mA, ±15 ±150
-40 to 125°C
±20
IR = 100 µA ±15
= 1mA
I
R
25°C
-1.55
-2.5
-40 to 125°C -4.0
25°C
150
60
-40 to 125°C 200
I
< IR < 1mA
RMIN
> 1.6V
V
OUT
1mA < IR < 12 mA
> 1.6V
V
OUT
I
= 1mA,
R
f = 120Hz
= 0.1IR
I
AC
t = 1000Hrs I
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25°C
-40 to 85°C 2.5
0.7
-40 to 125°C 2.5
25°C
-40 to 85°C 8.0
2
-40 to 125°C 10.0
V
= V
KA
0.5
REF
VKA = 10V 2
= 100µA 120 ppm
R
3 of 7
2.0
6.0
REF<VOUT
<10V.
Units
mV
µA -40 to 85°C 65 70
ppm/°C
mV
RMS
ppm
Units
mV
µA -40 to 85°C 70
ppm/°C
mV/V -40 to 85°C -3.0
nA -40 to 85°C 200
mV
RMS
September 2011
© Diodes Incorporated
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