MIC59150 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Ultra High Speed 1.5A LDO

MIC59150
Ultra High Speed 1.5A LDO
General Description
The MIC59150 is a high-bandwidth, low-dropout, 1.5A
linear voltage regulator ideal for powering core voltages of
low-power microprocessors. The MIC59150 implements a
dual supply configuration allowing for a very low output
impedance and a very fast transient response.
The MIC59150 requires a bias input supply and a main
input supply, allowing for ultra-low input voltages on the
main supply rail. The device operates from an input supply
of 1.0V to 3.8V and bias supply between 3V and 5.5V. The
MIC59150 offers adjustable output voltages down to 0.5V.
The MIC59150 requires a minimum output capacitance for
stability, working optimally with small ceramic capacitors.
The MIC59150 is available in an 8-pin EPAD SOIC
package and its junction temperature range is –40°C to
+125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
• Input voltage range:
– V_IN = 1.0V to 3.8V
– V_BIAS = 3.0V to 5.5V
• Stable with 1µF ceramic capacitor
• Maximum dropout voltage of 250mV over temperature
• Adjustable output voltage down to 0.5V
• Ultra fast transient response
• Excellent line and load regulation specifications
• Logic controlled shutdown option
• Thermal shutdown and current limit protection
• Junction temperature range: –40°C to +125°C
• 8-pin EPAD SOIC
Applications
• Telecommunications processors
• Graphics processors
• Computer peripheral cards
• Logic IC power supply
• SMPS post regulators
• Microprocessors
• Digital TV’s
_________________________________________________________________________________________________________
Typical Application
VIN
VBIAS
EN
MIC59150YME
CIN=1µF
(Ceramic)
CBIAS=1µF
(Ceramic)
VIN
VOUT
VBIAS
ADJ
EN
GND
VOUT
R1
COUT=1µF
(Ceramic)
R2
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
December 2008
M9999-121808-A