Ultralow Dropout LDOs

STMicroelectronics Ultra Low Dropout LDOs are a wide range of low and medium-power LDO regulators with ultralow dropout and fast transient response. These ultralow LDOs simplify the design of high-efficiency, cost-effective linear power management (from 50mA to 3A of continuous load current). This makes them ideal for DSPs, MCUs, and FPGAs.

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Description Datasheet Availability Pricing (JPY) 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 200 mA low quiescent current and low noise LDO
Datasheet
8,322In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOT-89-3 5 V 200 mA 1 Output Positive 60 uA 2.5 V 13.2 V 50 dB Fixed - 40 C + 125 C 200 mV LDK220 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
6,161In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOT-89-3 12 V 200 mA 1 Output Positive 60 uA 2.5 V 18 V 88 dB Fixed - 40 C + 125 C 200 mV LDK320 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
1,579In Stock
22,500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOT-89-3 3.3 V 200 mA 1 Output Positive 70 uA 2.5 V 18 V 48 dB Fixed - 40 C + 125 C 200 mV LDK320 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
15In Stock
6,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 2.5 V 200 mA 1 Output Positive 70 uA 2.5 V 18 V 88 dB Fixed - 40 C + 125 C 200 mV LDK320 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
30In Stock
6,000Expected 8/28/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 3 V 200 mA 1 Output Positive 70 uA 2.5 V 18 V 48 dB Fixed - 40 C + 125 C 100 mV LDK320 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
1,718In Stock
12,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 3.6 V 200 mA 1 Output Positive 60 uA 2.5 V 18 V 88 dB Fixed - 40 C + 125 C 200 mV LDK320 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
777In Stock
12,000Expected 3/29/2027
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 Adjustable 200 mA 1 Output Positive 70 uA 2.5 V 18 V 58 dB Adjustable - 40 C + 125 C 200 mV LDK320 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
2,330In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.8 V 200 mA 1 Output Positive 70 uA 2.5 V 18 V 48 dB Fixed - 40 C + 125 C 200 mV LDK320 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
30In Stock
6,000Expected 2/23/2027
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 3 V 200 mA 1 Output Positive 70 uA 2.5 V 18 V Fixed - 40 C + 125 C 100 mV LDK320 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 1.2 A low quiescent current LDO with reverse current protection
Datasheet
611In Stock
141,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 Adjustable 1.2 A 1 Output Positive 240 uA 1.6 V 5.5 V 53 dB Adjustable - 40 C + 125 C 350 mV LDL112 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1.2 A low quiescent current LDO with reverse current protection
Datasheet
136In Stock
12,000Expected 9/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3.3 V 1.2 A 1 Output Positive 35 uA 1.6 V 5.5 V Fixed - 40 C + 125 C 300 mV LDL112 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1.2A Low Drop Linear Regulator IC
Datasheet
344In Stock
21,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 5 V 1.2 A 1 Output Positive 250 uA 2.5 V 18 V 50 dB Fixed - 40 C + 125 C 350 mV LDL212 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators Lo Drop Noise BiCMOS 300mA Volt Reg
Datasheet
1,897In Stock
3,000Expected 9/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TSOT-23-5 3 V 300 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LDS3985 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 3.3 Volt 300mA
Datasheet
60In Stock
6,000Expected 10/5/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TSOT-23-5 3.3 V 300 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LDS3985 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 800 mA ultra low drop, high PSRR voltage regulator
Datasheet
1,531In Stock
2,500Expected 8/21/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT DFN-8 3.3 V 800 mA 1 Output Positive 150 uA 1 V 5.5 V 30 dB Fixed - 40 C + 125 C 100 mV ST1L08 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 150 mA - ultra low quiescent current linear voltage regulator
Datasheet
5,049In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.8 V 150 mA 1 Output Positive 1.4 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 112 mV STLQ015 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 150 mA - ultra low quiescent current linear voltage regulator
Datasheet
3,153In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 2 V 150 mA 1 Output Positive 1.4 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 11 mV STLQ015 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200mA Low Quiescent Crnt low noise LDO
Datasheet
4,262In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3 V 200 mA 1 Output Positive 50 uA 1.9 V 5.5 V Fixed - 40 C + 125 C 100 mV LDK120 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 0.25A Positive
Datasheet
4,382Expected 8/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOIC-8 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 1.0A Positive
Datasheet
6,835Expected 9/22/2026
Min.: 1
Mult.: 1

Through Hole TO-220-3 5 V 1 A 1 Output Positive 20 mA 6 V 16 V Fixed - 40 C + 150 C 250 mV L4941 Tube

STMicroelectronics LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop
Datasheet
19,475On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT TO-252-3 3.3 V 1.5 A 1 Output Positive 2.5 mA 2.5 V 6 V Fixed - 40 C + 125 C 40 mV LD39150 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 300mA Low Quiescent Crnt low noise LDO
Datasheet
28,985Expected 8/6/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 Adjustable 300 mA 1 Output Positive 30 uA 1.9 V 5.5 V Adjustable - 40 C + 125 C 100 mV AEC-Q100 LDK130 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and low noise LDO
Datasheet
17,435On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-323-5 3.3 V 200 mA 1 Output Positive 55 uA 2.5 V 13.2 V Fixed - 40 C + 125 C 100 mV LDK220 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 1.8V 50mA Positive
Datasheet
1,414In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.8 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 300mA current Linear Reg IC
Datasheet
13In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT FlipChip-4 1 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