L78L33ABU
STMicroelectronicsExtended
-40℃~+125℃@(Tj) 1 100mA 3.3V 30V 40uV 49dB@(120Hz) 6mA Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
- Part id
- st/L78L33ABU
- Category
- Voltage Regulators, Linear, Low Drop Out (LDO) Regulators
- Package
- SOT-89-3
- Pins
- 3
- In stock
- 22,534 at JLCPCB (C81362)
Overview
The L78L33ABU is a voltage Regulators, Linear, Low Drop Out (LDO) Regulator made by STMicroelectronics in a SOT-89-3 package with 3 pins. -40℃~+125℃@(Tj) 1 100mA 3.3V 30V 40uV 49dB@(120Hz) 6mA Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Regulator_Linear_1OUT_2GND_3IN, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:SOT-89-3, from KiCad's library), ready for a KiCad board. 22,534 are in stock at JLCPCB (part C81362).
Symbol
Footprint
From the datasheet
5- Supply, absolute maximum
- 30 V · VI, absolute maximum for VO = 3.3 V · p. 5
- Gives
- 100 mA · output current, max with adequate heat sinking · p. 5
- Junction, hottest
- 125 °C · operating junction temperature, L78LxxAB, max · p. 5
- Junction to case (SOT-89)
- 15 K/W · junction-case thermal resistance, max · p. 5
- Junction to air (SOT-89)
- 55 K/W · junction-ambient thermal resistance, 6 cm² copper board heat-sink, max · p. 5
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | OUT | Power out |
| 2 | GND | Power in |
| 3 | IN | Power in |
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Questions
Is there a KiCad symbol and footprint for the L78L33ABU?
Yes. The symbol is Pinmap_Generic:Regulator_Linear_1OUT_2GND_3IN and the footprint Package_TO_SOT_SMD:SOT-89-3, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the L78L33ABU?
SOT-89-3, with 3 pins. Its footprint is drawn on this page.
Where is the L78L33ABU datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the L78L33ABU?
JLCPCB lists it as part C81362, with 22,534 in stock; the sellers' links on this page open their listings.
What can replace the L78L33ABU?
Parts like it in the library: the AMS1117-3.3S by UMW, the L78L33ACU by STMicroelectronics, the HT7533-1 by UMW and the AMS1117-3.3 by GOODWORK. Check their datasheets: a part that fits the footprint may still differ in its ratings.