LP2950CDTX-3.3
Texas InstrumentsExtended
-40℃~+125℃@(Tj) 1 100mA 3.3V 30V 380mV@(100mA) 430uVrms 75uA Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive TO-252-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
- Part id
- ti/LP2950CDTX-3.3
- Category
- Voltage Regulators, Linear, Low Drop Out (LDO) Regulators
- Package
- TO-252-3
- Pins
- 3
- In stock
- 2,598 at JLCPCB (C129994)
Overview
The LP2950CDTX-3.3 is a voltage Regulators, Linear, Low Drop Out (LDO) Regulator made by Texas Instruments in a TO-252-3 package with 3 pins. -40℃~+125℃@(Tj) 1 100mA 3.3V 30V 380mV@(100mA) 430uVrms 75uA Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive TO-252-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Regulator_Linear_1IN_2GND_3OUT, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:TO-252-3_TabPin2, from KiCad's library), ready for a KiCad board. 2,598 are in stock at JLCPCB (part C129994).
Symbol
Footprint
From the datasheet
13- Supply, least
- 2.3 V · IN, recommended operating minimum · p. 1
- Supply, most
- 30 V · IN, recommended operating maximum · p. 5
- Supply, absolute maximum
- 30 V · IN, absolute maximum · p. 5
- Junction, hottest
- 150 °C · Junction temperature, absolute maximum · p. 5
- Takes working
- 75 µA · Ground current, typical at IL = 100 uA · p. 8
- Gives
- 100 mA · Ensured output current · p. 1
- Current limit
- 160 mA · Current limit, typical at VOUT = 0 V · p. 8
- Output
- 3.3 V · Fixed output voltage, typical at TJ = 25°C · p. 7
- Dropout
- 50 mV · Dropout voltage, typical at IL = 100 uA · p. 8
- Dropout
- 380 mV · Dropout voltage, typical at IL = 100 mA · p. 8
- Junction to air (NDP (TO-252))
- 51.3 K/W · Junction-to-ambient thermal resistance, High-K · p. 6
- Junction to board (NDP (TO-252))
- 30.4 K/W · Junction-to-board thermal resistance · p. 6
- Junction to case (NDP (TO-252))
- 53.5 K/W · Junction-to-case top thermal resistance · p. 6
What it is and has
2- Protection
- Current and thermal limiting · p. 1
- Output current
- 100 mA ensured · p. 1
Around it
4- cap 2.2 µF or more
- between OUT and GND; Recommended for the 3.3-V version; output capacitor ESR should be about 5 Ω or less. · p. 20
- res 0.1 Ω to 2 Ω
- between OUT and output capacitor; Add in series when using a ceramic output capacitor to provide the needed ESR. · p. 21
- cap 1 µF minimum
- between IN and GND; Tantalum, ceramic or aluminum electrolytic; required when a battery supplies the input or more than 10 inches of wire separates the input from the AC filter capacitor. · p. 22
- cap 10 µF minimum
- between OUT and GND; Recommended to reduce output overshoot when recovering from nonlinear operation, including power-up and output short-circuit recovery. · p. 21
Specifications
38| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Input supply voltage - SHUTDOWN input voltage error comparator output voltage | Input supply voltage; LP2950-N | min -0.3 · max 30 V | 5 |
| Junction temperature, TJ TJ | max 150 °C | 5 | |
| Soldering dwell time, temperature | Wave, 4 seconds | max 260 °C | 5 |
| Soldering dwell time, temperature | Infrared, 10 seconds | max 240 °C | 5 |
| Soldering dwell time, temperature | Vapor phase, 75 seconds | max 219 °C | 5 |
| Storage temperature, Tstg Tstg | min -65 · max 150 °C | 5 | |
| Electrostatic discharge V(ESD) | LP2950-N; Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001; ±2500 V | max 2500 V | 5 |
| Maximum input supply voltage | max 30 V | 5 | |
| Junction temperature, TJ TJ | LP2950C-XX | min -40 · max 125 °C | 5 |
| Junction-to-ambient thermal resistance, High-K RθJA | NDP (TO-252), 3 pins; PCB includes twelve thermal vias under the tab | typ 51.3 °C/W | 6 |
| Junction-to-case (top) thermal resistance RθJC(top) | NDP (TO-252), 3 pins | typ 53.5 °C/W | 6 |
| Junction-to-board thermal resistance RθJB | NDP (TO-252), 3 pins | typ 30.4 °C/W | 6 |
| Junction-to-top characterization parameter ψJT | NDP (TO-252), 3 pins | typ 5.5 °C/W | 6 |
| Junction-to-board characterization parameter ψJB | NDP (TO-252), 3 pins | typ 30 °C/W | 6 |
| Junction-to-case (bottom) thermal resistance RθJC(bot) | NDP (TO-252), 3 pins | typ 2.2 °C/W | 6 |
| Output voltage | LP2950C-XX, 3.3-V version; TJ = 25°C | min 3.267 · typ 3.3 · max 3.333 V | 7 |
| Output voltage | LP2950C-XX, 3.3-V version; −25°C ≤ TJ ≤ 85°C | min 3.251 · typ 3.3 · max 3.35 V | 7 |
| Output voltage | LP2950C-XX, 3.3-V version; full operating temperature range | min 3.234 · typ 3.3 · max 3.366 V | 7 |
| Output voltage | LP2950C-XX, 3.3-V version; 100 uA ≤ IL ≤ 100 mA, TJ ≤ TJMAX | min 3.221 · typ 3.3 · max 3.379 V | 7 |
| Output voltage temperature coefficient | LP2950C-XX; see (6), –40°C ≤ TJ ≤ 125°C | typ 50 · max 150 ppm/°C | 7 |
| Line regulation | LP2950C-XX; (VONOM + 1 V) ≤ Vin ≤ 30 V | typ 0.04 · max 0.2 % | 7 |
| Line regulation | LP2950C-XX; (VONOM + 1 V) ≤ Vin ≤ 30 V, –40°C ≤ TJ ≤ 125°C | typ 0.04 · max 0.4 % | 7 |
| Load regulation | LP2950C-XX; 100 uA ≤ IL ≤ 100 mA | typ 0.1 · max 0.2 % | 7 |
| Load regulation | LP2950C-XX; 100 uA ≤ IL ≤ 100 mA, –40°C ≤ TJ ≤ 125°C | typ 0.1 · max 0.3 % | 7 |
| Dropout voltage | LP2950C-XX; IL = 100 uA | typ 50 · max 80 mV | 8 |
| Dropout voltage | LP2950C-XX; IL = 100 uA, –40°C ≤ TJ ≤ 125°C | max 150 mV | 8 |
| Dropout voltage | LP2950C-XX; IL = 100 mA | typ 380 · max 450 mV | 8 |
| Dropout voltage | LP2950C-XX; IL = 100 mA, –40°C ≤ TJ ≤ 125°C | max 600 mV | 8 |
| Ground current | LP2950C-XX; IL = 100 uA | typ 75 · max 120 uA | 8 |
| Ground current | LP2950C-XX; IL = 100 uA, –40°C ≤ TJ ≤ 125°C | max 140 uA | 8 |
| Ground current | LP2950C-XX; IL = 100 mA | typ 8 · max 12 mA | 8 |
| Ground current | LP2950C-XX; IL = 100 mA, –40°C ≤ TJ ≤ 125°C | max 14 mA | 8 |
| Dropout ground current | LP2950C-XX; VIN = (VONOM − 0.5)V, IL = 100 uA | typ 110 · max 170 uA | 8 |
| Dropout ground current | LP2950C-XX; VIN = (VONOM − 0.5 V), IL = 100 uA, –40°C ≤ TJ ≤ 125°C | max 200 uA | 8 |
| Current limit | LP2950C-XX; VOUT = 0 V | typ 160 · max 200 mA | 8 |
| Current limit | LP2950C-XX; VOUT = 0 V, –40°C ≤ TJ ≤ 125°C | max 220 mA | 8 |
| Thermal regulation | LP2950C-XX; see (10); 50 mA load pulse at VIN = 30 V, T = 10 ms | typ 0.05 · max 0.2 %/W | 8 |
| Output noise 10 Hz to 100 kHz | LP2950C-XX; CL = 200 uF | typ 160 uVRMS | 8 |
Pins, by the datasheet
3- 1 IN
- Input supply voltage. · p. 4
- 2 GND
- Ground. · p. 4
- 3 OUT
- Regulated output voltage. · p. 4
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Questions
Is there a KiCad symbol and footprint for the LP2950CDTX-3.3?
Yes. The symbol is Pinmap_Generic:Regulator_Linear_1IN_2GND_3OUT and the footprint Package_TO_SOT_SMD:TO-252-3_TabPin2, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LP2950CDTX-3.3?
TO-252-3, with 3 pins. Its footprint is drawn on this page.
Where is the LP2950CDTX-3.3 datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LP2950CDTX-3.3?
JLCPCB lists it as part C129994, with 2,598 in stock; the sellers' links on this page open their listings.
What can replace the LP2950CDTX-3.3?
Parts like it in the library: the AMS1117CD-3.3 by Advanced Monolithic Systems, the LD39150DT33-R by STMicroelectronics, the LP38690DTX-3.3 by Texas Instruments and the UA78M33CKVURG3 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.