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 (TWD) 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 high PSRR voltage regulator
Datasheet
54,089In Stock
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 100 mV LDK320 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
10,680In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 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 BICMOS 300mA V Reg Ultra Lo Drop Lo
Datasheet
4,590In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TSOT-23-5 1.8 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 150 mA - ultra low quiescent current linear voltage regulator
Datasheet
8,955In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 2.1 V 150 mA 1 Output Positive 1.4 uA 1.55 V 5.5 V Fixed - 40 C + 125 C 112 mV STLQ015 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 300mA current Linear Reg IC
Datasheet
7,031In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT FlipChip-4 1.2 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 150mA Capless Ultra Low REG 50mV 100mA
Datasheet
3,220In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 3.3 V 150 mA 1 Output Positive 120 uA 1.8 V 5.5 V Fixed - 40 C + 125 C 50 mV LDCL015 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and low noise LDO
Datasheet
10,455In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 5 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 800 mA ultra low drop, high PSRR voltage regulator
Datasheet
4,559In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT DFN-8 Adjustable 800 mA 1 Output Positive 150 uA 1 V 5.5 V Adjustable - 40 C + 125 C 70 mV ST1L08 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators IC Regulator LN 150MA, 2.5V
Datasheet
13,462In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 2.5 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 low quiescent current very low noise LDO
Datasheet
5,140In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1 V 200 mA 1 Output Positive 50 uA 1.9 V 5.5 V 55 dB Fixed - 40 C + 125 C 150 mV LDK120 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent Very low noise LDO
Datasheet
8,458In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.8 V 200 mA 1 Output Positive 100 uA 1.9 V 5.5 V Fixed - 40 C + 125 C 100 mV LDK120 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators BICMOS 300mA V Reg Ultra Lo Drop Lo
Datasheet
2,845In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TSOT-23-5 2.5 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 1.8V 200mA Linear
Datasheet
2,288In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.8 V 200 mA 1 Output Positive 250 uA 2.5 V 14 V Fixed - 40 C + 125 C 500 mV LK112S Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 300mA current very low noise LDO
Datasheet
5,407In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 1.5 V 300 mA 1 Output Positive 30 uA 1.9 V 5.5 V 55 dB Fixed - 40 C + 125 C 100 mV LDK130 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
5,956In Stock
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 150 mA - ultra low quiescent current linear voltage regulator
Datasheet
4,516In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.5 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 500 mA ultra-low dropout linear regulator with bias supply
Datasheet
5,711In Stock
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-4 1.1 V 500 mA 1 Output Positive 27 uA 800 mV 5.5 V Fixed - 40 C + 85 C 80 mV LD56050 Reel, Cut Tape

STMicroelectronics LDO Voltage Regulators 300mA current very low noise LDO
Datasheet
6,126In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.5 V 300 mA 1 Output 1.9 V 5.5 V 55 dB Fixed - 40 C + 125 C AEC-Q100 LDK130 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 500 mA low quiescent current and low noise voltage regulator
Datasheet
4,238In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 800 mV to 4.5 V 500 mA 1 Output Positive 100 uA 1.5 V 5.5 V Adjustable - 40 C + 125 C 200 mV LD39050 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 300mA current Linear Reg IC
Datasheet
8,004In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT FlipChip-4 2.5 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 dropout linear regulator IC
Datasheet
13,035In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT DFN-4 1.2 V 300 mA 1 Output Positive 305 uA 1.5 V 5.5 V 75 dB Fixed - 40 C + 125 C 155 mV LD59030 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
77,659In Stock
157,500Expected 11/13/2026
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 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
28,069In 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 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
20,455In Stock
12,000On Order
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