
Overview
The LM4041CILPR is a voltage Reference made by Texas Instruments in a TO-92-3 package with 2 pins. -40℃~+85℃@(Ta) 1.233V~10V 100ppm/℃ 12mA 20uVrms Adjustable Parallel ±0.5% TO-92-3 Voltage Reference ROHS.
JLCPCB lists it (part C1575430). 15 open-source boards in 13 repositories on GitHub use it.
Symbol
The library has no symbol for this part yet.
Footprint
The library has no footprint for this part yet.
From the datasheet
7- Supply, most
- 10 V · VZ, recommended operating max, adjustable version · p. 3
- Supply, absolute maximum
- 15 V · CATHODE, continuous cathode voltage absolute max · p. 2
- Works from
- -40 °C · TA, free-air temperature min, I temperature · p. 3
- Works up to
- 85 °C · TA, free-air temperature max, I temperature · p. 3
- Junction, hottest
- 150 °C · Operating virtual junction temperature max · p. 2
- Junction to air (LP)
- 156 K/W · Package thermal impedance max · p. 2
- Feedback reference
- 1.233 V · VREF typical, IZ = 100 uA, VZ = 5 V, TA = 25°C · p. 6
What it is and has
1- Output voltage tolerance
- 0.5% maximum, C grade; 100 ppm/°C · p. 1
Specifications
29| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Continuous cathode voltage VZ | over free-air temperature range | max 15 V | 2 |
| Continuous cathode current IZ | over free-air temperature range | min -10 · max 25 mA | 2 |
| Package thermal impedance θJA | LP package | max 156 °C/W | 2 |
| Operating virtual junction temperature TJ | max 150 °C | 2 | |
| Storage temperature range Tstg | min -65 · max 150 °C | 2 | |
| Cathode current IZ | Minimum: see parametric tables | max 12 mA | 3 |
| Reverse breakdown voltage (adjustable version) VZ | adjustable version | max 10 V | 3 |
| Free-air temperature TA | LM4041 (I temperature) | min -40 · max 85 °C | 3 |
| Reference voltage VREF | LM4041CI; IZ = 100 uA, VZ = 5 V; TA = 25°C | typ 1.233 V | 6 |
| Reference voltage tolerance(1) | LM4041CI; IZ = 100 uA, VZ = 5 V; TA = 25°C | min -6.2 · max 6.2 mV | 6 |
| Reference voltage tolerance(1) | LM4041CI; IZ = 100 uA, VZ = 5 V; full-range TA = –40°C to 85°C | min -14 · max 14 mV | 6 |
| Minimum cathode current IZ,min | LM4041CI; TA = 25°C | typ 45 · max 75 uA | 6 |
| Minimum cathode current IZ,min | LM4041CI; full-range TA = –40°C to 85°C | max 80 uA | 6 |
| Reference voltage change with cathode current change ΔVREF/ΔIZ | LM4041CI; IZ,min < IZ < 1 mA; TA = 25°C | typ 0.7 · max 1.5 mV | 6 |
| Reference voltage change with cathode current change ΔVREF/ΔIZ | LM4041CI; IZ,min < IZ < 1 mA; full-range TA = –40°C to 85°C | max 2 mV | 6 |
| Reference voltage change with cathode current change ΔVREF/ΔIZ | LM4041CI; 1 mA < IZ < 12 mA; TA = 25°C | typ 2 · max 4 mV | 6 |
| Reference voltage change with cathode current change ΔVREF/ΔIZ | LM4041CI; 1 mA < IZ < 12 mA; full-range TA = –40°C to 85°C | max 6 mV | 6 |
| Reference voltage change with output voltage change ΔVREF/ΔVKA | LM4041CI; IZ = 1 mA; TA = 25°C | typ -1.55 · max -2 mV/V | 6 |
| Reference voltage change with output voltage change ΔVREF/ΔVKA | LM4041CI; IZ = 1 mA; full-range TA = –40°C to 85°C | max -2.5 mV/V | 6 |
| Feedback current IFB | LM4041CI; TA = 25°C | typ 60 · max 100 nA | 6 |
| Feedback current IFB | LM4041CI; full-range TA = –40°C to 85°C | max 120 nA | 6 |
| Average temperature coefficient of reference voltage(1) αVREF | LM4041CI; IZ = 10 mA, VZ = 5 V; TA = 25°C; ± typical coefficient | typ 20 ppm/°C | 6 |
| Average temperature coefficient of reference voltage(1) αVREF | LM4041CI; IZ = 1 mA, VZ = 5 V; TA = 25°C; ± typical coefficient | typ 15 ppm/°C | 6 |
| Average temperature coefficient of reference voltage(1) αVREF | LM4041CI; IZ = 1 mA, VZ = 5 V; full-range TA = –40°C to 85°C; ± maximum coefficient | max 100 ppm/°C | 6 |
| Average temperature coefficient of reference voltage(1) αVREF | LM4041CI; IZ = 100 uA, VZ = 5 V; TA = 25°C; ± typical coefficient | typ 15 ppm/°C | 6 |
| Reverse dynamic impedance ZZ | LM4041CI; IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = VREF; TA = 25°C | typ 0.3 Ω | 6 |
| Reverse dynamic impedance ZZ | LM4041CI; IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = 10 V; TA = 25°C | typ 2 Ω | 6 |
| Wideband noise eN | LM4041CI; IZ = 100 uA, VZ = VREF, 10 Hz ≤ f ≤ 10 kHz; TA = 25°C | typ 20 uVRMS | 6 |
| Long-term stability of reverse breakdown voltage | LM4041CI; t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100 uA; TA = 25°C | typ 120 ppm | 6 |
Parameters
11- Junction Temperature(Max)
- 150℃
- Operating Temperature
- -40℃~+85℃
- Output Current
- 12mA
- Output Type
- Adjustable
- Output Voltage
- 1.233V~10V
- Reference Type
- Parallel
- Reference Voltage
- 1.233V
- Temperature Coefficient
- 100ppm/℃
- Thermal Resistance(Junction to Ambient)
- 156℃/W
- Tolerance
- ±0.5%
- Voltage - Supply(Absolute Max)
- 15V
Order codes
1- LM4041CILPRLCSC C1575430
Open-source boards using it
All 15- 2 layers83.6 × 86.6 mm

- 2 layers132 × 78 mm

ECE445L Lab7
AndrewYin04/VR-Goggles-Embedded-Lab
The typical explanation for the repo structure. Lab specific instructions can be found further below.
124 parts - 4 layers193 × 114.3 mm

SwanGanzInterface V1.1
ATK-1/SeniorDesign_SwanGanz
The contributors to this senior design project were Nathan DeLaRosa, Ashton Knecht, Jack Son, and Jerry Xia under the supervision of Dr. Jonathan Valvano.
154 parts - 4 layers30 × 70 mm

Wearable
brnna05/senior-design-strength-training
Senior Design project for ECE 364D - Fitness wearable for strength training
73 parts - 2 layers134 × 58.5 mm

ECE445L Lab6
chengkun-yang/ece-445l-lab-6-chengkun-yang
The typical explanation for the repo structure. Lab specific instructions can be found further below.
48 parts - 2 layers

- 2 layers152.4 × 127 mm

ECE445L Lab7
niranjannt/Local-Music-Streaming-Pipeline
Embedded music-streaming system using ESP32 and TM4C MCUs, featuring USB-UART audio streaming, SPI DAC output, MOSFET-based analog filters, digital audio effects, real-time control via potentiometers, and a web-based…
215 parts - 4 layers58.2 × 66 mm

Questions
What package is the LM4041CILPR?
TO-92-3, with 2 pins.
Where is the LM4041CILPR datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM4041CILPR?
JLCPCB lists it as part C1575430, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LM4041CILPR?
Parts like it in the library: the CJ431K by Jiangsu Changjing Electronics Technology (CJ), the TL431BILPR by Texas Instruments, the CJ431 ±0.5% by Jiangsu Changjing Electronics Technology (CJ) and the AS431AZTR-E1 by Diodes Incorporated. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM4041CILPR?
15 boards in 13 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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