LD3985M122R

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STMicroelectronics

ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE

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LD3985M122R

Active

STMicroelectronics

ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE

Deep-Dive with AI

Documents +6

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LD3985M122R

Control Features	Enable
Current - Output	150 mA
Current - Quiescent (Iq)	150 çA
Current - Supply (Max) [Max]	250 µA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	SC-74A, SOT-753
Protection Features	Over Current, Over Temperature
PSRR [Max]	60 dB
PSRR [Min]	50 dB
Supplier Device Package	SOT-23-5
Voltage - Input (Max) [Max]	6 V

LD3985 Series

Ultra low drop-low noise BiCMOS voltage regulators low ESR capacitors compatible

Part	Current - Supply (Max) [Max]	Mounting Type	Current - Output	Current - Quiescent (Iq)	Control Features	Output Type	Voltage Dropout (Max) [Max]	Number of Regulators	Operating Temperature [Max]	Operating Temperature [Min]	PSRR [Max]	PSRR [Min]	Protection Features	Package / Case	Output Configuration	Voltage - Output (Min/Fixed)	Voltage - Input (Max) [Max]	Supplier Device Package
STMicroelectronics LD3985G25R	250 µA	Surface Mount	150 mA	150 çA	Enable	1.81 mOhm	0.1 V	1	125 °C	-40 °C	60 dB	50 dB	Over Current Over Temperature	SOT-23-5 Thin TSOT-23-5	Positive	2.5 V	6 V
STMicroelectronics LD3985G33R	250 µA	Surface Mount	150 mA	150 çA	Enable	1.81 mOhm	0.1 V	1	125 °C	-40 °C	60 dB	50 dB	Over Current Over Temperature	SOT-23-5 Thin TSOT-23-5	Positive	3.3 V	6 V
STMicroelectronics LD3985M25R	250 µA	Surface Mount	150 mA	150 çA	Enable	1.81 mOhm	0.1 V	1	125 °C	-40 °C	60 dB	50 dB	Over Current Over Temperature	SC-74A SOT-753	Positive	2.5 V	6 V	SOT-23-5
STMicroelectronics LD3985G27R	250 µA	Surface Mount	150 mA	150 çA	Enable	1.81 mOhm	0.1 V	1	125 °C	-40 °C	60 dB	50 dB	Over Current Over Temperature	SOT-23-5 Thin TSOT-23-5	Positive	2.7 V	6 V
STMicroelectronics LD3985M122R	250 µA	Surface Mount	150 mA	150 çA	Enable	1.81 mOhm		1	125 °C	-40 °C	60 dB	50 dB	Over Current Over Temperature	SC-74A SOT-753	Positive		6 V	SOT-23-5

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Arrow	N/A	1	$ 0.30
Digikey	Cut Tape (CT)	1	$ 1.26
		10	$ 1.13
		25	$ 1.07
		100	$ 0.88
		250	$ 0.82
		500	$ 0.73
		1000	$ 0.57
	Digi-Reel®	1	$ 1.26
		10	$ 1.13
		25	$ 1.07
		100	$ 0.88
		250	$ 0.82
		500	$ 0.73
		1000	$ 0.57
	Tape & Reel (TR)	3000	$ 0.29

Description

General part information

LD3985 Series

The LD3985 provides up to 150 mA, from 2.5 V to 6 V input voltage. The ultra low drop voltage, low quiescent current and low noise make it suitable for low power applications and in battery-powered systems. Regulator ground current increases slightly in dropout only, prolonging the battery life. Power supply rejection is better than 60 dB at low frequencies and rolls off at 10 kHz. High power supply rejection is maintained down to low input voltage levels common to battery operated circuits. Shutdown logic control function is available, this means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. The LD3985 is designed to work with low ESR ceramic capacitors. Typical applications are in mobile phones and similar battery-powered wireless systems.