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STMicroelectronics - 3A Very low drop

Numéro de référence LD49300
Description 3A Very low drop
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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LD49300 fiche technique
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LD49300
3A Very low drop for low output voltage regulator
Feature summary
Input voltage range:
VI = 1.4V to 5.5V
VBIAS = 3V to 6V
Stable with ceramic capacitor
±1.5% initial tolerance
Maximum dropout voltage (VI - VO) of 400mV
over temperature
Adjustable output voltage down to 0.8V
Ultra fast transient response (up to 10MHz
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
Description
The LD49300 is a high-bandwidth, low-dropout,
3.0A voltage regulator, ideal for powering core
voltages of low-power microprocessors. The
LD49300 implements a dual supply configuration
allowing for very low output impedance and very
fast transient response. The LD49300 requires a
bias input supply and a main input supply,
allowing for ultra-low input voltages on the main
supply rail. The input supply operates from 1.4V to
PPAK
5.5V and the bias supply requires between 3V
and 6V for proper operation. The LD49300 offers
fixed output voltages from 0.8V to 1.8V and
adjustable output voltages down to 0.8V.
The LD49300 requires a minimum output
capacitance for stability, and work optimally with
small ceramic capacitors.
Applications
Graphics processors
PC Add-In Cards
Microprocessor core voltage supply
Low voltage digital ICs
High Efficiency Linear power supplies
SMPS post regulators
Order code
Part number
LD49300PT08R (1)
LD49300PT10R
LD49300PT12R
1. Adjustable Version.
December 2006
Package
PPAK (Tape&Reel)
PPAK (Tape&Reel)
PPAK (Tape&Reel)
Rev. 2
Packaging
2500 parts per reel
2500 parts per reel
2500 parts per reel
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