Low Dropout (LDO) Regulators

STMicroelectronics Low Dropout (LDO) Linear Regulators deliver a stable and regulated output voltage. The LDOs simplify designs with few external components. Low dropout linear regulators provide the best cost-performance tradeoff.

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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
Package/Case
Output Voltage
Output Current
Number of Outputs
Polarity
Quiescent Current
Input Voltage - Min
Input Voltage - Max
PSRR / Ripple Rejection - Typ
Output Type
Minimum Operating Temperature
Maximum Operating Temperature
Dropout Voltage
Qualification
Series
Packaging

STMicroelectronics LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop Lo
Datasheet
2,810In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 2.9 V 150 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LD3985 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 250 mA ultra-low noise LDO
Datasheet
4,948In Stock
Min.: 1
Mult.: 1
: 5,000

SMD/SMT DFN-4 2.9 V 250 mA 1 Output Positive 250 uA 1.5 V 5.5 V 60 dB Fixed - 40 C + 125 C 120 mV LDLN025 Reel, Cut Tape

STMicroelectronics LDO Voltage Regulators 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
149,053In Stock
157,500Expected 13/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,500

SMD/SMT DFN-8 Adjustable 2 A 1 Output Positive 1 mA 1.25 V 6 V 40 dB Adjustable - 40 C + 125 C 130 mV LD39200 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1.5 A Low Dropout Linear Regulator with Programmable Soft-Start
Datasheet
28,509In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

SMD/SMT DFN-10 800 mV to 3.6 V 1.5 A 1 Output Positive 800 mV 5.5 V 70 dB Adjustable - 40 C + 125 C 65 mV AEC-Q100 LD59150 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 400 mA, 38 V low-dropout regulator, with 45uAA quiescent current
Datasheet
20,465In Stock
12,000Expected 02/04/2027
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 Adjustable 400 mA 1 Output Positive 45 uA 3.5 V 38 V 70 dB Adjustable - 40 C + 125 C 140 mV AEC-Q100 LDO40L Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 0.25A Positive
Datasheet
2,843In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT TO-252-3 3.3 V 250 mA 1 Output Positive 600 uA 4 V 20 V Fixed - 40 C + 125 C 400 mV L4931 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 1.5A Positive
Datasheet
4,297In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SMD/SMT D2PAK-3 (TO-263-3) 5 V 1.5 A 1 Output Positive 30 mA 6 V 17 V Fixed - 40 C + 150 C 200 mV L4940 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 50mA Positive
Datasheet
5,448In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 3.3 V 50 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 7 mV LD2980 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 100mA Positive
Datasheet
8,276In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOT-89-3 3.3 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 100mA Positive
Datasheet
5,922In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOT-89-3 3.3 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 100mA Positive
Datasheet
6,650In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOT-89-3 5 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 150mA Lo Quiescent Lo Noise Vltg Reg
Datasheet
5,084In Stock
9,000Expected 02/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.2 V 150 mA 1 Output Positive 50 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 80 mV LD39015 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA very low quiescent current Linear regulator IC
Datasheet
44,090In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 3 V 200 mA 1 Output Positive 100 uA 1.5 V 5.5 V 55 dB Fixed - 40 C + 125 C 200 mV LD39020 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 200 mA very low quiescent current Linear regulator IC
Datasheet
16,600In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 10,000

SMD/SMT 3.3 V 200 mA 1 Output Positive 20 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 200 mV LD39020 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators ADJ FRM 0.8V LDO 500mA
Datasheet
6,752In Stock
9,000Expected 18/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 800 mV 500 mA 1 Output Positive 50 uA 1.5 V 5.5 V Adjustable - 40 C + 125 C 200 mV LD39050 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator
Datasheet
10,086In Stock
9,000Expected 09/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 1.2 V 1 A 1 Output Positive 200 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 200 mV AEC-Q100 LD39100 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator
Datasheet
3,208In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3.3 V 1 A 1 Output Positive 200 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 200 mV AEC-Q100 LD39100 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 300mA current Linear Reg IC
Datasheet
6,391In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT FlipChip-4 3.3 V 300 mA 1 Output Positive 45 uA 1.4 V 5.5 V 70 dB Fixed - 40 C + 125 C 300 mV LD39130S Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 300 mA very low quiescent current Linear regulator IC with automatic Green mode
Datasheet
4,418In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT DFN-6 Adjustable 300 mA 1 Output Positive 45 uA 1.4 V 5.5 V 65 dB Adjustable - 40 C + 125 C 300 mV LD39130S Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop
Datasheet
2,879In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT TO-252-5 1.22 V to 5 V 1.5 A 1 Output Positive 2.5 mA 2.5 V 6 V Adjustable - 40 C + 125 C 40 mV LD39150 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators Ultralow drop BICMOS Volt REG 2.5V to 6V
Datasheet
3,310In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 1.22 V to 5 V 1.5 A 1 Output Positive 1 mA 2.5 V 6 V Adjustable - 40 C + 125 C 200 mV LD39150 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
12,815In Stock
48,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3.3 V 2 A 1 Output Positive 1 mA 1.25 V 6 V 40 dB Fixed - 40 C + 125 C 130 mV LD39200 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators BICMOS VOLT REG
Datasheet
32,923In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 3.3 V 150 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LD3985 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1A Ultra Low-Dropout regulator with Reverse Current Protection
Datasheet
3,696In Stock
9,000Expected 30/04/2027
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-8 Adjustable 1 A 1 Output Positive 280 uA 2.2 V 5.5 V 70 dB Adjustable - 40 C + 125 C 200 mV LD59100 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 150mA Capless Ultra Low REG 50mV 100mA
Datasheet
14,407In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 Adjustable 150 mA 1 Output Positive 120 uA 1.8 V 5.5 V Adjustable - 40 C + 125 C 50 mV LDCL015 Reel, Cut Tape, MouseReel