MIC47300 Datasheet PDF - MICREL

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MIC47300
MICREL

Part Number MIC47300
Description 3A / Low Voltage Adjustable LDO Regulator
Page 11 Pages


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MIC47300
3A, Low Voltage, Adjustable LDO
Regulator with Dual Input Supply
General Description
The MIC47300 is a high-bandwidth, low-dropout, 3A volt-
age regulator ideal for powering core voltages of low-
power microprocessors. The MIC47300 implements a dual
supply conguration allowing for very low output
impedance and very fast transient response.
The MIC47300 requires a bias input supply between 3V
and 6.5V for proper operation. The main input supply rail
operates from 1.4V to 6.5V that allows for adjustable
output voltages down to 0.9V.
The MIC47300 requires a minimum of 1µF output
capacitance for stability, and optimal operation is achieved
with small ceramic capacitors.
The MIC47300 is available in a 5-pin power D-Pak
package (TO-252) with an operating temperature range of
–40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Input Voltage Range:
– VIN: 1.4V to 6.5V
– VBIAS: 3.0V to 6.5V
Stable with 1µF ceramic capacitor
±1% initial tolerance
Maximum dropout voltage (VIN–VOUT) of 400mV
over temperature
Adjustable output voltage down to 0.9V
Ultra fast transient response (Up to 10MHz bandwidth)
Excellent line and load regulation specifications
Power D-Pak package (TO-252)
Thermal shutdown and current-limit protection
Junction temperature range: –40°C to 125°C
Applications
Graphics processors
PC add-in cards
Microprocessor core voltage supply
Low voltage digital ICs
High efficiency linear power supplies
SMPS post regulators
__________________________________________________________________________________________
Typical Application*
www.DataSheet4U.com
Figure 1. Typical Application Circuit
*See Thermal Design Section
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 2009
M9999-102309-A

MIC47300 datasheet pdf
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Related : Start with MIC4730 Part Numbers by
MIC47300 3A / Low Voltage Adjustable LDO Regulator MIC47300
MICREL
MIC47300 pdf

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