Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • The LD49300 is a high-bandwidth, low-dropout, 3.0 A voltage regulator, ideal for powering core voltages of low power microprocessors. The LD49300 implements a dual supply configuration, which guarantees a very low output impedance and a fast transient response. The LD49300 requires a bias input supply and a main input supply, allowing ultra-low input voltages on the main supply rail. The input supply operates from 1.4 V to 5.5 V and bias supply requires between 3 V and 6 V to work properly. The LD49300 offers fixed output voltages from 0.8 V to 1.8 V and adjustable output voltages from 0.8 V. The LD49300 requires a minimum output capacitance for stability, and works optimally with small ceramic capacitors.

    Key Features

    • Input voltage range:
      • VI = 1.4 V to 5.5 V
      • VBIAS = 3 V to 6 V
    • Stable with ceramic capacitors
    • ±1.5% initial tolerance
    • Maximum dropout voltage (VI - VO) 400 mV over the operating temperature range
    • Adjustable output voltage starting from 0.8 V
    • Very fast transient response (up to 10 MHz bandwidth)
    • Excellent line and load regulation specifications
    • Logic-controlled shutdown option
    • Thermal shutdown and current limit protection
    • Junction temperature range: - 25 °C to 125 °C

Recommended for you

CAD/EDA Symbols, Footprints and Models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD49300PT08R
NRND
PPACK 5 Industrial Ecopack2

LD49300PT08R

Package:

PPACK 5

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

PPACK 5

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Output Voltage (V) (nom)
Budgetary Price (US$)*/Qty
More info
min
max
LD49300PT08R Available at 1 distributors

Distributor availability ofLD49300PT08R

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 625 0 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

Newark Element14

Stock

625

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-10-23

NRND
EAR99 NEC Tape And Reel PPACK 5 -25 125 0.8 0.91 / 1k
MORE INFO

Output Tolerance (typ):

1.5

Output Current (A) (nom):

3

Unit Price (US$):

0.91

Country of Origin:

CHINA

LD49300PT08R

Marketing Status

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.91 / 1k

Distributor availability ofLD49300PT08R

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 625 0 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

Newark Element14

Stock

625

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

PPACK 5

Operating Temperature (°C)

(min)

-25

(max)

125

Output Voltage (V) (nom)

0.8

Output Tolerance (typ)

1.5

Output Current (A) (nom)

3

Budgetary Price (US$)* / Qty

0.91 / 1k

Country of Origin

CHINA

(*) 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