LM4041

Datasheet LM4041 Datasheet (TEXAS INSTRUMENTS)

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Adjustable. . . DBZ (SOT-23) PACKAGE

(TOP VIEW)

CATHODE

ANODE

Adjustable. . . DCK (SC-70) PACKAGE

(TOP VIEW)

1 2

CATHODE

ANODE

Adjustable. . . LP (TO-92/TO-226) PACKAGE

(TOP VIEW)

NC − No internal connection

1.2 V . . . DBZ (SOT-23) PACKAGE (TOP VIEW)

CATHODE

ANODE

1.2 V . . . DCK (SC-70) PACKAGE (TOP VIEW)

ANODE

2 3

CATHODE

ANODE

1.2 V . . . LP (TO-92/TO-226) PACKAGE (TOP VIEW)

NC − No internal connection * Pin 2 must be connected to ANODE or left open.

* Pin 3 must be connected to ANODE or left open.

NC − No internal connection

ANODE

CATHODE

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LM4041

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

FEATURES

• Available in

• 1.225-V Fixed and Adjustable Outputs – Industrial Temperature: –40 ° C to 85 ° C

(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 µ V

RMS

• Wide Operating Current Range . . . 45 µ A (Typ) to 12 mA

• Stable With All Capacitive Loads; No Output

(Typ)

– Extended Temperature: –40 ° C to 125 ° C

• 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

Capacitor Required

DESCRIPTION/ORDERING INFORMATION

The LM4041 series of shunt voltage references are versatile, easy-to-use references with a vast array of applications. They require no external resistors or 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).

Packaged in space-saving SC-70 and SOT-23-3 and requiring a minimum current of 45 µ A (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.

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.

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.

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LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

ORDERING INFORMATION

–40 ° C to 85 ° C C grade:

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

(2) DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.

DEVICE GRADE V

A grade: SC-70 (DCK) Reel of 3000 LM4041A12IDCKR PREVIEW

0.1% initial accuracy

and 1.2 V 100 ppm/ ° C temperature

coefficient

B grade:

0.2% initial accuracy

and 100 ppm/ ° C temperature

coefficient

0.5% initial accuracy

and Reel of 2000 LM4041CILPR 100 ppm/ ° C temperature

coefficient

D grade:

1.0% initial accuracy

and Reel of 2000 LM4041DILPR 150 ppm/ ° C temperature

coefficient

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4041BIDCKR PREVIEW

ADJ Reel of 250 LM4041BIDBZT

1.2 V Reel of 250 LM4041B12IDBZT

ADJ SOT-23-3 (DBZ) 4MH_

1.2 V Reel of 250 LM4041C12IDBZT

ADJ SOT-23-3 (DBZ) 4MJ_

1.2 V Reel of 250 LM4041D12IDBZT

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4041B12IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) MH_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4041C12IDCKR MM_

SOT-23-3 (DBZ) 4MM_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) MJ_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4041D12IDCKR MN_

SOT-23-3 (DBZ) 4MN_

TO-92/TO-226 (LP) PREVIEW

PACKAGE

(1)

Reel of 3000 LM4041A12IDBZR Reel of 250 LM4041A12IDBZT Bulk of 1000 LM4041A12ILP Reel of 2000 LM4041A12ILPR

Reel of 3000 LM4041BIDBZR

Bulk of 1000 LM4041BILP Reel of 2000 LM4041BILPR

Reel of 3000 LM4041B12IDBZR

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 3000 LM4041C12IDBZR

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 3000 LM4041D12IDBZR

Bulk of 1000 LM4041D12ILP Reel of 2000 LM4041D12ILPR

ORDERABLE TOP-SIDE

PART NUMBER MARKING

(2)

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PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

ORDERING INFORMATION

–40 ° C to 125 ° C

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

(2) DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.

DEVICE GRADE V

C grade: Reel of 3000 LM4041CQDBZR

0.5% initial accuracy

and 100 ppm/ ° C temperature

coefficient

D grade: Reel of 3000 LM4041DQDBZR

1.0% initial accuracy

and 150 ppm/ ° C temperature

coefficient

ADJ SOT-23-3 (DBZ) 4MP_

1.2 V SOT-23-3 (DBZ) 4MS_

ADJ SOT-23-3 (DBZ) 4MR_

1.2 V SOT-23-3 (DBZ) 4MT_

PACKAGE

(1)

Reel of 250 LM4041CQDBZT Reel of 3000 LM4041C12QDBZR

Reel of 250 LM4041C12QDBZT

Reel of 250 LM4041DQDBZT Reel of 3000 LM4041D12QDBZR

Reel of 250 LM4041D12QDBZT

ORDERABLE TOP-SIDE

PART NUMBER MARKING

LM4041

(2)

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CATHODE

ANODE

(1)

(1) LM4041x (ADJ) only (2) LM4041x12 only

REF

(1)

(2)

LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

FUNCTIONAL BLOCK DIAGRAM

Absolute Maximum Ratings

(1)

over free-air temperature range (unless otherwise noted)

MIN MAX UNIT

stg

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

(2) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient (3) The package thermal impedance is calculated in accordance with JESD 51-7.

Recommended Operating Conditions

(1) See parametric tables

Continuous cathode voltage 15 V Continuous cathode current –10 25 mA

DBZ package 206

Package thermal impedance

(2) (3)

DCK package 252 ° C/W

LP package 156 Operating virtual junction temperature 150 ° C Storage temperature range –65 150 ° C

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.

temperature is PD= (TJ(max) – TA)/ θJA. Operating at the absolute maximum TJof 150 ° C can affect reliability.

MIN MAX UNIT

Cathode current

(1)

Reverse breakdown voltage (adjustable version) 10 V

Free-air temperature ° C

LM4041 (I temperature) –40 85

LM4041 (Q temperature) –40 125

12 mA

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PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

LM4041x12I Electrical Characteristics

full-range TA= –40 ° C to 85 ° C (unless otherwise noted)

PARAMETER TEST CONDITIONS T

Z,min

Reverse breakdown voltage

Reverse breakdown voltage tolerance

IZ= 100 µ A 25 ° C 1.225 1.225 V

IZ= 100 µ A mV

Minimum cathode current

25 ° C –1.2 1.2 –2.4 2.4

Full range –9.2 9.2 –10.4 10.4

25 ° C 45 75 45 75

Full range 80 80

IZ= 10 mA 25 ° C ± 20 ± 20

coefficient of reverse IZ= 1 mA ppm/ ° C breakdown voltage

Average temperature

25 ° C ± 15 ± 15

Full range ± 100 ± 100

IZ= 100 µ A 25 ° C ± 15 ± 15

< IZ< 1 mA

Reverse breakdown

Z,min

∆ VZ/ ∆ IZvoltage change with mV

cathode current change

Reverse dynamic IZ= 1 mA, f = 120 Hz, impedance IAC= 0.1 I

Wideband noise 25 ° C 20 20 µ V

1 mA < IZ< 12 mA

IZ= 100 µ A, 10 Hz ≤ f ≤ 10 kHz

25 ° C 0.7 1.5 0.7 1.5

Full range 2 2

25 ° C 4 6 4 6

Full range 8 8

25 ° C 0.5 1.5 0.5 1.5 Ω

Long-term stability of t = 1000 h, reverse breakdown TA= 25 ° C ± 0.1 ° C, 25 ° C 120 120 ppm voltage IZ= 100 µ A

LM4041A12I LM4041B12I

MIN TYP MAX MIN TYP MAX

LM4041

UNIT

µ A

RMS

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LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

LM4041x12I Electrical Characteristics

full-range TA= –40 ° C to 85 ° C (unless otherwise noted)

PARAMETER TEST CONDITIONS T

Z,min

Reverse breakdown voltage

Reverse breakdown voltage tolerance

IZ= 100 µ A 25 ° C 1.225 1.225 V

IZ= 100 µ A mV

Minimum cathode current

25 ° C –6 6 –12 12

Full range –14 14 –24 24

25 ° C 45 75 45 75

Full range 80 80

IZ= 10 mA 25 ° C ± 20 ± 20

coefficient of reverse IZ= 1 mA ppm/ ° C breakdown voltage

Average temperature

25 ° C ± 15 ± 15

Full range ± 100 ± 150

IZ= 100 µ A 25 ° C ± 15 ± 15

< IZ< 1 mA

Reverse breakdown

Z,min

∆ VZ/ ∆ IZvoltage change with mV

cathode current change

Reverse dynamic IZ= 1 mA, f = 120 Hz, impedance IAC= 0.1 I

Wideband noise 25 ° C 20 20 µ V

1 mA < IZ< 12 mA

IZ= 100 µ A, 10 Hz ≤ f ≤ 10 kHz

25 ° C 0.7 1.5 0.7 2

Full range 2 2.5

25 ° C 2.5 6 2.5 8

Full range 8 10

25 ° C 0.5 1.5 0.5 2 Ω

Long-term stability of t = 1000 h, reverse breakdown TA= 25 ° C ± 0.1 ° C, 25 ° C 120 120 ppm voltage IZ= 100 µ A

LM4041C12I LM4041D12I

MIN TYP MAX MIN TYP MAX

UNIT

µ A

RMS

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PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

LM4041x12Q Electrical Characteristics

full-range TA= –40 ° C to 125 ° C (unless otherwise noted)

PARAMETER TEST CONDITIONS T

Z,min

Reverse breakdown voltage

Reverse breakdown voltage tolerance

IZ= 100 µ A 25 ° C 1.225 1.225 V

IZ= 100 µ A mV

Minimum cathode current

25 ° C –6 6 –12 12

Full range –18.4 18.4 –31 31

25 ° C 45 75 45 75

Full range 80 80

IZ= 10 mA 25 ° C ± 20 ± 20

coefficient of reverse IZ= 1 mA ppm/ ° C breakdown voltage

Average temperature

25 ° C ± 15 ± 15

Full range ± 100 ± 150

IZ= 100 µ A 25 ° C ± 15 ± 15

< IZ< 1 mA

Reverse breakdown

Z,min

∆ VZ/ ∆ IZvoltage change with mV

cathode current change

Reverse dynamic IZ= 1 mA, f = 120 Hz, impedance IAC= 0.1 I

Wideband noise 25 ° C 20 20 µ V

1 mA < IZ< 12 mA

IZ= 100 µ A, 10 Hz ≤ f ≤ 10 kHz

25 ° C 0.7 1.5 0.7 2

Full range 2 2.5

25 ° C 2.5 6 2.5 8

Full range 8 10

25 ° C 0.5 0.5

Full range 1.5 2

Long-term stability of t = 1000 h, reverse breakdown TA= 25 ° C ± 0.1 ° C, 25 ° C 120 120 ppm voltage IZ= 100 µ A

LM4041C12Q LM4041D12Q

MIN TYP MAX MIN TYP MAX

LM4041

UNIT

µ A

Ω

RMS

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LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

LM4041xI (Adjustable Version) Electrical Characteristics

full-range TA= –40 ° C to 85 ° C (unless otherwise noted)

PARAMETER TEST CONDITIONS T

REF

Z,min

∆ V

/ ∆ I

REF

Reference voltage IZ= 100 µ A, VZ= 5 V 25 ° C 1.233 1.233 V Reference voltage

tolerance

(1)

IZ= 100 µ A, VZ= 5 V mV

Minimum cathode current

< IZ< 1 mA

Reference voltage change with cathode mV

current change

Z,min

1 mA < IZ< 12 mA

25 ° C –2.5 2.5 –6.2 6.2

Full range –10.5 10.5 –14 14

25 ° C 45 75 45 75

Full range 80 80

25 ° C 0.7 1.5 0.7 1.5

Full range 2 2

25 ° C 2 4 2 4

Full range 6 6

Reference voltage 25 ° C –1.55 –2 –1.55 –2

∆ V

/ ∆ V

REF

change with output IZ= 1 mA mV/V

voltage change

Feedback current nA

Full range –2.5 –2.5

25 ° C 60 100 60 100

Full range 120 120

IZ= 10 mA, VZ= 5 V 25 ° C ± 20 ± 20

α V

REF

coefficient of IZ= 1 mA, VZ= 5 V ppm/ ° C reference voltage

(1)

Average temperature

25 ° C ± 15 ± 15

Full range ± 100 ± 100 IZ= 100 µ A, VZ= 5 V 25 ° C ± 15 ± 15 IZ= 1 mA, f = 120 Hz,

Reverse dynamic impedance

IAC= 0.1 IZ, VZ= V IZ= 1 mA, f = 120 Hz,

REF

IAC= 0.1 IZ, VZ= 10 V

Wideband noise 25 ° C 20 20 µ V

IZ= 100 µ A, VZ= V 10 Hz ≤ f ≤ 10 kHz

REF

25 ° C 0.3 0.3

25 ° C 2 2

Long-term stability of t = 1000 h, reverse breakdown TA= 25 ° C ± 0.1 ° C, 25 ° C 120 120 ppm voltage IZ= 100 µ A

(1) Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics.

LM4041BI LM4041CI

MIN TYP MAX MIN TYP MAX

UNIT

µ A

Ω

RMS

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PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

LM4041xI (Adjustable Version) Electrical Characteristics

full-range TA= –40 ° C to 85 ° C (unless otherwise noted)

PARAMETER TEST CONDITIONS T

REF

Z,min

∆ V

/ ∆ I

REF

Reference voltage IZ= 100 µ A, VZ= 5 V 25 ° C 1.233 V

Reference voltage tolerance

(1)

IZ= 100 µ A, VZ= 5 V mV

Minimum cathode current µ A

< IZ< 1 mA

Z,min

Reference voltage change with cathode current change

1 mA < IZ< 12 mA

∆ V

/ ∆ V

REF

Reference voltage change with output voltage change

IZ= 1 mA mV/V

Feedback current nA

25 ° C –12 12

Full range –24 24

25 ° C 45 75

Full range 80

25 ° C 0.7 2

Full range 2.5

25 ° C 2 6

Full range 8

25 ° C –1.55 –2

Full range –3

25 ° C 60 150

Full range 200

IZ= 10 mA, VZ= 5 V 25 ° C ± 20

α V

REF

Average temperature coefficient of reference voltage

(1)

IZ= 1 mA, VZ= 5 V ppm/ ° C

25 ° C ± 15

Full range ± 150 IZ= 100 µ A, VZ= 5 V 25 ° C ± 15 IZ= 1 mA, f = 120 Hz,

Reverse dynamic impedance Ω

IAC= 0.1 IZ, VZ= V IZ= 1 mA, f = 120 Hz,

REF

IAC= 0.1 IZ, VZ= 10 V

Wideband noise 25 ° C 20 µ V

Long-term stability of reverse breakdown voltage

IZ= 100 µ A, VZ= V 10 Hz ≤ f ≤ 10 kHz

t = 1000 h, TA= 25 ° C ± 0.1 ° C, 25 ° C 120 ppm IZ= 100 µ A

REF

25 ° C 0.3

25 ° C 2

(1) Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics.

LM4041DI

MIN TYP MAX

LM4041

UNIT

RMS

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LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

LM4041xQ (Adjustable Version) Electrical Characteristics

full-range TA= –40 ° C to 125 ° C (unless otherwise noted)

PARAMETER TEST CONDITIONS T

REF

Z,min

∆ V

/ ∆ I

REF

∆ V

/ ∆ V

REF

α V

REF

Reference voltage IZ= 100 µ A, VZ= 5 V 25 ° C 1.233 1.233 V Reference voltage

tolerance

(1)

IZ= 100 µ A, VZ= 5 V mV

Minimum cathode current

< IZ< 1 mA

Reference voltage change with cathode mV

current change

Z,min

1 mA < IZ< 12 mA

Reference voltage 25 ° C –1.55 –2 –1.55 –2.5 change with output IZ= 1 mA mV/V

voltage change

Feedback current nA

IZ= 10 mA, VZ= 5 V 25 ° C ± 20 ± 20

Average temperature coefficient of IZ= 1 mA, VZ= 5 V ppm/ ° C reference voltage

(1)

IZ= 100 µ A, VZ= 5 V 25 ° C ± 15 ± 15 IZ= 1 mA, f = 120 Hz,

Reverse dynamic impedance

IAC= 0.1 IZ, VZ= V IZ= 1 mA, f = 120 Hz,

IAC= 0.1 IZ, VZ= 10 V

Wideband noise 25 ° C 20 20 µ V

IZ= 100 µ A, VZ= V 10 Hz ≤ f ≤ 10 kHz

Long-term stability of t = 1000 h, reverse breakdown TA= 25 ° C ± 0.1 ° C, 25 ° C 120 120 ppm voltage IZ= 100 µ A

MIN TYP MAX MIN TYP MAX

25 ° C –6.2 6.2 –12 12

Full range –18 18 –30 30

25 ° C 45 75 45 75

Full range 80 80

25 ° C 0.7 1.5 0.7 2

Full range 2 2.5

25 ° C 2 4 2 6

Full range 8 10

Full range –3 –4

25 ° C 60 100 60 150

Full range 120 200

25 ° C ± 15 ± 15

Full range ± 100 ± 150

LM4041CQ LM4041DQ

REF

25 ° C 0.3 0.3

25 ° C 2 2

REF

UNIT

µ A

Ω

RMS

(1) Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics.

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−0.5

−0.4

−0.3

−0.2

−0.1

0.1

0.2

0.3

0.4

0.5

−40 Temperature (C)

Reference Voltage (V)

IZ = 150 A V

REF

= 1.2 V

−9.9 ppm/C

2.7 ppm/C

21 ppm/C

−20 0 20 40 60 80 100

200

400

600

800

1000

Frequency (Hz)

Noise Voltage (nV/Hz)

1 10 100 1k 10k

−0.5

0.5

1.5

2.5

−2

Time (s)

−20

−15

−10

−5

(V)

2 6 10 14 18 22 26

(V)

1.2305

1.231

1.2315

1.232

1.2325

1.233

1.2335

1.234

1.2345

1.235

Reverse (Output) Voltage (V)

Reference Voltage (V)

0 2 4 6 8 10

LM4041 (Adj) IZ = 1 mA

125C

85C

−40C 25C

LM4041

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

TYPICAL CHARACTERISTICS

Figure 1. Temperature Drift for Different Average Figure 2. Noise Voltage vs Frequency

Temperature Coefficients <br/>

Figure 3. Start-Up Characteristics Figure 4. Reference Voltage vs Reverse (Output) Voltage

<br/> (for Different Temperatures)

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1.2305

1.231

1.2315

1.232

1.2325

1.233

1.2335

1.234

1.2345

1.235

Temperature (C)

Reference Voltage (V)

−40 −20 0 20 40 60 80 100

LM4041 (Adj) IZ = 1 mA

REF

5 V

10 V

100

Reverse (Output) Voltage (V)

Feedback Current (nA)

LM4041 (Adj) IZ = 1 mA

0 2 4 6 8 10

125C

85C

25C

−40C

0.1

100

1000

Frequency (Hz)

1k100 10k 100k 1M

Impedance ()

LM4041 (Adj) IZ = 1 mA IZ = 0.1 I

Tj = 25C

CL = 1 F

CL = 0 F

Capacitor

Line

1.23 V

2.5 V

5 V

10 V

0.1

100

1000

LM4041 (Adj) IZ = 150 A IZ = 0.1 I

Tj = 25°C

1k100 10k 100k 1M

Frequency (Hz)

Impedance (Ω)

CL = 1 F

CL = 0 F

Capacitor

Line

1.23 V

2.5 V

5 V

10 V

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SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

TYPICAL CHARACTERISTICS

Figure 5. Reference Voltage vs Temperature Figure 6. Feedback Current vs Reverse (Output) Voltage

(for Different Reverse Voltages) (for Different Temperatures)

Figure 7. Output Impedance vs Frequency Figure 8. Output Impedance vs Frequency

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100

Reverse (Output) Voltage (V)

Reverse Current (A)

FB Steps (V)

(see Figure 12)

LM4041 (Adj) IZ = 1 mA

0 1 2 3 4 5 6 7 8 9 10

0 2 4 6 8

100

Reverse (Output) Voltage (V)

Reverse Current (A)

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8

LM4041 (Adj) VZ = 1.23 V (nominal)

0.2

0.4

0.6

0.8

1.2

1.4

1.6

Output Current (mA)

Output Saturation (V)

LM4041 (Adj) V

Adj

= V

REF

+ 5 mV

−40C

25C

85C

125C

1210 2 3 4 5 6 7 8 9 10

LM4041

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TYPICAL CHARACTERISTICS

Figure 9. Reverse Characteristics Figure 10. Reverse Characteristics and Minumum

Figure 11. Output Saturation vs Output Current

<br/> Operating Current

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1-Hz rate

LM4041-1.2

RS 30 k

(+)

(−)

2 V/step

LM4041 (Adj)

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SLCS146C – FEBRUARY 2005 – REVISED MAY 2005

APPLICATION INFORMATION

Figure 12. Startup Characteristics Test Circuit

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.

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APPLICATION INFORMATION

LM4041 (Adjustable)

= V

REF



1 

R2 R1



REF

−





 V



(

 I

)

LM4041

+ I

Adjustable Version

The adjustable version allows V according to the equation shown in Figure 14 .

to be set by a user-defined resistor divider. The output voltage, VZ, is set

LM4041

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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. R the load (IL) and bias the LM4041 (IZ). In all cases, IZmust 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 I and minimum VS), R

must be small enough to supply the minimum IZrequired for operation of the regulator, as

given by data sheet parameters. At the other extreme, maximum V limit IZto less than its maximum recommended rating of 12 mA.

is calculated as shown in Equation 1 .

must be set properly, as it sets the total current available to supply

and minimum IL, R

must be large enough to

(1)

Figure 15. Shunt Regulator

PACKAGE OPTION ADDENDUM

www.ti.com

PACKAGING INFORMATION

Orderable Device Status

LM4041A12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041A12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041A12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

LM4041A12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

LM4041A12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS &

LM4041A12IDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI

LM4041A12ILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI

LM4041B12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041B12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041B12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

LM4041B12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

LM4041B12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS &

LM4041B12IDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI

LM4041B12ILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI

LM4041BIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041BIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041BIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

LM4041BIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

LM4041BIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS &

LM4041BIDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI

LM4041BIDCKT ACTIVE SC70 DCK 5 250 Green (RoHS &

LM4041BIDCKTE4 ACTIVE SC70 DCK 5 250 TBD Call TI Call TI

LM4041BILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI

LM4041BILPR PREVIEW TO-92 LP 3 2000 TBD Call TI Call TI

LM4041C12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041C12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

LM4041C12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

LM4041C12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

(1)

Package

Type

Package Drawing

Pins Package

Qty

Eco Plan

no Sb/Br)

(2)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

18-Nov-2005

(3)

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

Orderable Device Status

(1)

Package

Type

Package Drawing

Pins Package

Qty

Eco Plan

LM4041C12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS &

(2)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041C12IDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI

LM4041C12ILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI

LM4041C12QDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041C12QDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041C12QDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041C12QDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDCKRE4 ACTIVE SC70 DCK 5 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDCKT ACTIVE SC70 DCK 5 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CIDCKTE4 ACTIVE SC70 DCK 5 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

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 &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CQDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CQDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041CQDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041D12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041D12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041D12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041D12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041D12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041D12IDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI

LM4041D12QDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

18-Nov-2005

(3)

Addendum-Page 2

PACKAGE OPTION ADDENDUM

www.ti.com

Orderable Device Status

(1)

Package

Type

Package Drawing

Pins Package

Qty

Eco Plan

(2)

LM4041D12QDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

18-Nov-2005

(3)

no Sb/Br)

LM4041D12QDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041D12QDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDCKRE4 ACTIVE SC70 DCK 5 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDCKT ACTIVE SC70 DCK 5 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DIDCKTE4 ACTIVE SC70 DCK 5 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

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 &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DQDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DQDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

LM4041DQDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

(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)

(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

Addendum-Page 3

PACKAGE OPTION ADDENDUM

www.ti.com

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.

18-Nov-2005

Addendum-Page 4

MECHANICAL DATA

MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001

LP (O-PBCY-W3) PLASTIC CYLINDRICAL P ACKAGE

0.205 (5,21) 0.165 (4,19)

0.175 (4,44)

0.157 (4,00) MAX

DIA

0.210 (5,34)

0.170 (4,32)

0.500 (12,70) MIN

0.125 (3,17)

Seating Plane

0.050 (1,27) C

0.104 (2,65)

FORMED LEAD OPTION

0.135 (3,43) MIN

0.055 (1,40)

0.045 (1,14)

0.105 (2,67)

0.080 (2,03)

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.

STRAIGHT LEAD OPTION

0.022 (0,56)

0.016 (0,41)

0.105 (2,67)

0.095 (2,41)

0.105 (2,67)

0.080 (2,03)

0.016 (0,41)

0.014 (0,35)

4040001-2/C 10/01

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001

LP (O-PBCY-W3) PLASTIC CYLINDRICAL P ACKAGE

0.539 (13,70)

0.460 (11,70)

1.260 (32,00)

0.905 (23,00)

0.650 (16,50)

0.610 (15,50)

0.433 (11,00)

0.335 (8,50)

0.098 (2,50)

TAPE & REEL

0.020 (0,50) MIN

0.384 (9,75)

0.335 (8,50)

0.748 (19,00)

0.217 (5,50)

0.114 (2,90)

0.094 (2,40)

0.114 (2,90)

0.094 (2,40) 0.146 (3,70)

0.266 (6,75)

0.234 (5,95)

0.512 (13,00)

0.488 (12,40)

0.169 (4,30)

0.748 (19,00)

0.689 (17,50)

DIA

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.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty . Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.

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Datasheet LM4041 Datasheet (TEXAS INSTRUMENTS)

Specifications and Main Features

Frequently Asked Questions

User Manual