6 layers100 × 114 mm
MTE USB HUB
MicroType-Engineering/MTE_USB_HUB
As designed on the MicroType Engineering's YouTube series: https://youtu.be/uzqXgHHZUUs
159 parts41GPL-2.0
LM317DCYR
UMWExtended
0℃~+125℃@(Tj) 1 1.2V~37V 1.5A 12mA 40V 66dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
- Part id
- umw/LM317DCYR
- Category
- Voltage Regulators Linear, Low Drop Out (LDO) Regulators
- Package
- SOT-223
- Pins
- 4
- In stock
- 14,061 at JLCPCB (C3014305)
- Used on
- 7 open-source boards
Overview
The LM317DCYR is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by UMW in a SOT-223 package with 4 pins. 0℃~+125℃@(Tj) 1 1.2V~37V 1.5A 12mA 40V 66dB@(120Hz) Adjustable Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.
PCBKit's library has its KiCad symbol (dk_PMIC-Voltage-Regulators-Linear:LM317DCYR, from Digikey) and its footprint (Package_TO_SOT_SMD:SOT-223, from KiCad's library), ready for a KiCad board. 14,061 are in stock at JLCPCB (part C3014305). 7 open-source boards in 6 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
3- Junction, hottest
- 125 °C · maximum junction temperature · p. 2
- Gives
- 1.5 A · rated load current · p. 1
- Feedback reference
- 1.25 V · typical feedback reference voltage · p. 3
What it is and has
3- Protection
- Internal thermal overload protection · p. 1
- Protection
- Internal short circuit current limiting · p. 1
- Adjustable output voltage
- 1.2 to 37 V · p. 1
Around it
3- cap 10µF
- between A and GND; Optional adjustment capacitor; connected between adjustment pin and ground. · p. 3
- cap 0.1µF
- between I and GND; CI; required when regulator is an appreciable distance from the power supply filter. · p. 4
- cap 1µF
- between O and GND; CO; improves transient response; not needed for stability. · p. 4
Specifications
24| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Input-Output Voltage Differential VI-VO | max 40 V | 2 | |
| Lead Temperature TLEAD | max 230 °C | 2 | |
| Power Dissipation PD | SOT-223 | max 1 W | 2 |
| Junction Temperature Range TJ | min 0 · max 125 °C | 2 | |
| Storage Temperature Range TSTG | min -55 · max 125 °C | 2 | |
| Temperature Coefficient of Output Voltage ΔVO/ΔT | Value printed as ±0.02 | min -0.02 · max 0.02 %/°C | 2 |
| Line Regulation (note1) Rline | TA=25°C, 3V≤VI-VO≤40V | typ 0.01 · max 0.04 %/V | 3 |
| Line Regulation (note1) Rline | 3V≤VI-VO≤40V | typ 0.02 · max 0.07 %/V | 3 |
| Load Regulation (note1) Rload | TA=25°C, 10mA≤IO≤IMAX, VO<5V | typ 18 · max 25 mV | 3 |
| Load Regulation (note1) Rload | TA=25°C, 10mA≤IO≤IMAX, VO≥5V; unit placement ambiguous | typ 0.4 · max 0.5 | 3 |
| Load Regulation (note1) Rload | 10mA≤IO≤IMAX, VO<5V | typ 40 · max 70 %VO | 3 |
| Load Regulation (note1) Rload | 10mA≤IO≤IMAX, VO≥5V; unit placement ambiguous | typ 0.8 · max 1.5 | 3 |
| Adjustable Pin Current IADJ | typ 46 · max 100 uA | 3 | |
| Adjustable Pin Current Change ΔIADJ | 3V≤VI-VO≤40V, 10mA≤IO≤IMAX,PD≤ PMAX | typ 2 · max 5 uA | 3 |
| Reference Voltage VREF | 3V≤VIN-VO≤40V, 10mA≤IO≤IMAX,PD≤ PMAX | min 1.2 · typ 1.25 · max 1.3 V | 3 |
| Temperature Stability STT | typ 0.7 %/VO | 3 | |
| Minimum Load Current to Maintain Regulation IL(MIN) | VI-VO=40V | typ 3.5 · max 12 mA | 3 |
| Maximum Output Current IO(MAX) | TA=25°C, VI-VO≤15V, PD≤PMAX | typ 2.2 A | 3 |
| Maximum Output Current IO(MAX) | TA=25°C, VI-VO≤40V, PD≤PMAX | typ 0.3 A | 3 |
| RMS Noise,% of VOUT eN | TA=25°C, 10Hz≤f≤10KHz | typ 0.003 · max 0.01 %/VO | 3 |
| Ripple Rejection RR | VO=10V, f=120Hz without CADJ | typ 60 dB | 3 |
| Ripple Rejection RR | VO=10V, f=120Hz, CADJ=10uF(note2) | typ 75 dB | 3 |
| Long-Term Stability,TJ=THIGH ST | TA=25°C for end point mesasurements, 1000HR | typ 0.3 · max 1 % | 3 |
| Thermal Resistance Junction to case RθJC | Package not specified | typ 25.2 °C/W | 3 |
Pins, by the datasheet
3- 1 A
- Adj · p. 1
- 2 O
- Output · p. 1
- 3 I
- Input · p. 1
Ordering codes, by the datasheet
4- UMW LM317DCYR
- SOT-223 · LM317 marking; base quantity 2500; tape and reel · p. 9
- UMW LM317G
- SOT-223 · LM317G marking; base quantity 2500; tape and reel · p. 9
- UMW LM317MDT
- TO-252 · LM317M marking; base quantity 2500; tape and reel · p. 9
- UMW LM317T
- TO-220 · LM317T marking; base quantity 1000; tube and box · p. 9
Open-source boards using it
7- 2 layers60.7 × 92.5 mm
- 8 layers85 × 55 mm
Dadu 8L 2side 85x55
comedy1982-spec/pcb-viewer
Dadu 기반 ELD 솔레노이드 ECU. 12 V 입력, TC364 · CAN-FD · PMIC, PCB 위 센서는 NTC 하나. A4911(3상 드라이버)의 A·B 레그로 H-브리지(하프브리지 IAUC60N04S6N050H ×2, 레그 션트 2 mΩ ×2), C 레그는 비워 두고 SPI로 그 고장(VC · CHO · CLO · OC3)을 마스크.
130 parts - 6 layers177.8 × 114.3 mm
- 4 layers63.5 × 57.1 mm
- 2 layers45 × 30 mm
Solar NiMH emulation
peteEH/USB-battery-source
USB Mini to 4 outputs using linear regulator - set for 1.5V (NiMH or AA battery source)
21 parts - 8 layers90 × 60 mm
Dadu 8L A4911 10A 40A 90x60
comedy1982-spec/pcb-viewer
Dadu 기반 ELD 솔레노이드 ECU. 12 V 입력, TC364 · CAN-FD · PMIC, PCB 위 센서는 NTC 하나. A4911(3상 드라이버)의 A·B 레그로 H-브리지(하프브리지 IAUC60N04S6N050H ×2, 레그 션트 2 mΩ ×2), C 레그는 비워 두고 SPI로 그 고장(VC · CHO · CLO · OC3)을 마스크.
130 parts
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Questions
Is there a KiCad symbol and footprint for the LM317DCYR?
Yes. The symbol is dk_PMIC-Voltage-Regulators-Linear:LM317DCYR and the footprint Package_TO_SOT_SMD:SOT-223, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM317DCYR?
SOT-223, with 4 pins. Its footprint is drawn on this page.
Where is the LM317DCYR datasheet?
UMW publishes it: the Datasheet link on this page opens it.
Where can I order the LM317DCYR?
JLCPCB lists it as part C3014305, with 14,061 in stock; the sellers' links on this page open their listings.
What can replace the LM317DCYR?
Parts like it in the library: the LM317G by UMW, the LM317 by TDSEMIC, the TL1963A-33DCY by Texas Instruments and the BL8071GCLATR33 by BL. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM317DCYR?
7 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.