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

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  • 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.

    主要特性

    • Input voltage from 2.5 to 6 V
    • Stable with low ESR ceramic capacitors
    • Ultra low-dropout voltage (60 mV typ. at 150 mA load, 0.4 mV typ. at1 mA load)
    • Very low quiescent current (85 μA typ. at no load, 170 μA typ. at 150 mA load; max.1.5 μA in OFF mode)
    • Guaranteed output current up to 150 mA
    • Wide range of output voltages: 1.22 V; 1.8 V; 2.5 V; 2.7 V; 2.8 V;2.9 V; 3.3 V; 4.7 V
    • Fast turn-on time: typ. 200 μs [CO = 1 μF, CBYP = 10 nF and IO = 1 mA]
    • Logic-controlled electronic shutdown
    • Internal current and thermal limit
    • Output low noise voltage 30 μVRMS over 10 Hz to 100 kHz
    • SVR of 60 dB at 1 kHz, 50 dB at 10 kHz
    • Temperature range: -40 °C to 125 °C

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LD3985M47R SOT23-5L Tape And Reel 4.7 2 0.15
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0.192 1000
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ECCN (US):

EAR99

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MALAYSIA

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LD3985M25R SOT23-5L Tape And Reel 2.5 2 0.15
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LD3985M28R SOT23-5L Tape And Reel 2.8 2 0.15
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LD3985M47R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.192*

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Output Voltage (V) (nom)

4.7

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD3985M25R

Package

SOT23-5L

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Tape And Reel

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0.192*

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Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD3985M33R

Package

SOT23-5L

Packing Type

Tape And Reel

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0.192*

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD3985M122R

Package

SOT23-5L

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Tape And Reel

Unit Price (US$)

0.192*

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Output Voltage (V) (nom)

1.22

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD3985M18R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.192*

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Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD3985M30R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

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Output Voltage (V) (nom)

3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD3985M27R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.192*

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Output Voltage (V) (nom)

2.7

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD3985M29R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.192*

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Output Voltage (V) (nom)

2.9

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD3985M28R

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.192*

Distributor availability ofLD3985M28R

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DIGIKEY WORLDWIDE 6000 1 Order Now
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6000

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1

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WORLDWIDE Order Now

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1220

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5

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库存

6794

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Output Voltage (V) (nom)

2.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.15

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

00 Files selected for download

技术文档

    • Description 版本 文档大小 Action
      DS3355
      Ultra low drop and low noise BiCMOS voltage regulators
      16.0
      322.32 KB
      PDF
      DS3355

      Ultra low drop and low noise BiCMOS voltage regulators

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      电源管理 2017版指南

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型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD3985M122R
Active
SOT23-5L 工业 Ecopack2
LD3985M18R
Active
SOT23-5L 工业 Ecopack2
LD3985M25R
Active
SOT23-5L 工业 Ecopack2
LD3985M27R
Active
SOT23-5L 工业 Ecopack2
LD3985M28R
Active
SOT23-5L 工业 Ecopack2
LD3985M29R
Active
SOT23-5L 工业 Ecopack2
LD3985M30R
Active
SOT23-5L 工业 Ecopack2
LD3985M33R
Active
SOT23-5L 工业 Ecopack2
LD3985M47R
Active
SOT23-5L 工业 Ecopack2

LD3985M122R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M18R

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M25R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M27R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M28R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M29R

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M30R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M33R

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD3985M47R

Package:

SOT23-5L

Material Declaration**:

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.